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These are radiology news updates from other sites

F-18 FDG Uptake in the Nidus of an Osteoid Osteoma.
Lim, C.-H., et al. - Osteoid osteoma is a common skeletal neoplasm with distinctive histologic abnormalities that consist of a central core of vascular osteoid tissue and a peripheral sclerotic zone. We report a case of intense F-18 FDG uptake in the nidus of cortical osteoid osteoma of the distal metaphysis of the right tibia [more...]

Clinical Nuclear Medicine , 07/31/07

Multidetector CT in Patients Suspected of Having Lumbar Disk Herniation: Comparison of Standard-Dose and Simulated Low-Dose Techniques
Bohy, P., et al. - To compare standard-dose and simulated low-dose multidetector computed tomography (CT) in patients suspected of having lumbar disk herniation...Conclusion: For patients suspected of having lumbar disk herniation, tube charge settings could be reduced to 65% of the standard dose adapted to the BMI [more...]

Radiology, 07/30/07

Spinal dural arteriovenous fistula in a case with lipomyelodysplasia
Erdogan, C., et al. - Coexistence of a spinal dural arteriovenous fistula within a dysraphic spinal lesion is a very rare situation. We report a 40-year-old man who presented with low back pain and progressive paraparesis. MR images showed an intradural high signal intensity mass at the L2–L3 level containing irregular signal void structures. Spinal angiography revealed extradural arteriovenous fistula with three connections, drained by a tortuous perimedullary vein [more...]

British Journal of Radiology, 07/30/07

Tendon Abnormalities Mimicking Metastatic Disease in Patients With Prostate Cancer
Kerimoglu, U., et al. - We present plain x-ray examination, bone scintigraphy, computed tomography, and magnetic resonance imaging of 2 patients diagnosed with prostate cancer who complained of hip pain. Bone scintigraphy was suggestive for metastases. Further radiologic investigation revealed benign etiologies for the hip pain; calcific tendinitis of the vastus lateralis and tendonosis of the gluteus medius tendon were visualized [more...]

Clinical Nuclear Medicine , 07/30/07

A case study of an axillary artery pseudoaneurysm following anterior dislocation of the glenohumeral joint: A rare presentation on plain film radiographs
Whittam, K., et al. - Axillary pseudoaneurysm is a rare but important complication of anterior glenohumeral joint dislocation. Diagnosis of axillary pseudoaneurysm is predominantly undertaken following clinical examination but where diagnosis is uncertain, Doppler ultrasound is the imaging examination of choice to confirm diagnosis. In this case study, the initial clinical signs of axillary pseudoaneurysm were masked by the presenting trauma and, although findings indicative of pseudoaneurysm were present on late plain film images, they were not immediately recognised [more...]

Radiography, 07/27/07

Intramedullary tuberculoma: A case report
Maamar, M., et al. - We report a case of intra-medullary tuberculoma in a 22 year-old man with progressive paraparesis and sphincter dysfunction...Conclusions: Intra-medullary spinal tuberculoma is rare, but must be considered in the differential diagnosis of spinal cord compression [more...]

Radiography, 07/27/07

Septic Arthritis Versus Transient Synovitis of the Hip: Gadolinium-Enhanced MRI Finding of Decreased Perfusion at the Femoral Epiphysis
Kwack, K.-S., et al. - The purpose of this study was to identify differences in the MRI findings of septic arthritis and transient synovitis in patients with nontraumatic acute hip pain and hip effusion...Conclusion: Decreased perfusion at the femoral epiphysis on fat-suppressed gadolinium-enhanced coronal T1-weighted MRI is useful for differentiating septic arthritis from transient synovitis [more...]

American Journal of Roentgenology, 07/26/07

A case of primary extracranial meningioma of the forearm with bone invasion
Murata, H., et al. - We report here a rare case of primary extracranial meningioma in a 73-year-old woman with an asymptomatic mass located in the left distal-dorsal forearm. MRI revealed the lesion to be poorly circumscribed and unclear, with iso-signal intensity to muscle on T1 and with a relatively high signal intensity on T2-weighted imaging [more...]

Skeletal Radiology, 07/26/07

The association between patellar alignment and patellofemoral joint osteoarthritis features - an MRI study
Kalichman, L., et al. - The aim of our study was to evaluate the association between patellar alignment (using standard MRI images of extended knees) and MRI indices of patellofemoral (PF) osteoarthritis (OA) features...Conclusions: The results of our study clearly indicated that patellar alignment is associated with manifestations of PF OA such as cartilage thickness loss and BML [more...]

Rheumatology, 07/26/07

The value of ultrasonography in the preoperative diagnostic evaluation of patients with recurrent anterior shoulder dislocation: a prospective study of 44 patients
Magnusson, L., et al. - Ultrasonography showed a high correlation with the arthroscopic findings, with a high sensitivity and specificity. Therefore, we conclude that US can give important pre-operative information in patients with recurrent, unilateral, post-traumatic, anterior shoulder instability [more...]

Knee Surgery, Sports Traumatology, Arthroscopy, 07/26/07

Magnetic resonance imaging of ankle tendons and ligaments: Part I - Anatomy
Kong., et al. - Magnetic resonance imaging is an excellent technique for imaging the tendons and the ligaments of the ankle. Owing to the advantage of detailed demonstration of soft-tissue structures and capability for multiplanar demonstration of the ankle ligaments and tendons, MRI has been increasingly used in the evaluation of the ligamentous and the tendon injuries of the ankle [more...]

Australasian Radiology, 07/25/07

Intra-osseous pseudoaneurysm following curettage of an aneurysmal bone cyst
Murata, H., et al. - We describe an unusual case of pseudoaneurysm of the anterior tibial artery complicating curettage of an aneurysmal bone cyst which presented as a rapidly enlarging mass clinically thought to be rapid recurrence of the tumour. This was successfully treated by embolisation [more...]

Skeletal Radiology, 07/25/07

Solitary intramuscular myxoma with monostotic fibrous dysplasia as a rare variant of Mazabrauds syndrome
Endo, M., et al. - The rare coexistence of intramuscular myxoma (IM) and fibrous dysplasia (FD) is known as Mazabraud's syndrome. IM tends to occur multifocally and is associated most frequently with polyostotic FD in Mazabraud's syndrome. We present an extremely rare combination of a solitary IM and monostotic FD as a variant of Mazabraud's syndrome, and discuss the importance of recognizing this rare coexistence for appropriate management of the patient [more...]

Skeletal Radiology, 07/25/07

Bizarre parosteal osteochondromatous proliferation of the proximal humerus: case report
Bush, J., et al. - Bizarre parosteal osteochondromatous proliferation (BPOP), or Nora's lesion, is a rare lesion of bone occurring predominantly in the long bones of the hands and feet. It exists as a puzzling clinical entity of uncertain origins and high recurrence rates after surgical resection. To our knowledge, this clinical entity has not been reported in the proximal aspect of the humerus [more...]

Skeletal Radiology, 07/24/07

Hyperphosphatasia with massive osteoectasia: a 45-year follow-up
McCarthy, E., et al. - Hyperphosphatasia is a heterogeneous group of disorders characterized by a generalized skeletal disease and increased alkaline phosphatase. Increased bone remodeling secondary to increased osteoclastic activity appears to be the underlying feature of these disorders. These disorders include juvenile Paget's disease, expansile skeletal hyperphosphatasia, hyperostosis generalisata with striations, and Camurati-Engelmann's disease, type II [more...]

Skeletal Radiology, 07/24/07

Intracortical lipoma of the femur
Lee, S.-J., et al. - Intracortical lipoma is an extremely rare benign primary bone tumor. We encountered a case of an intracortical lipoma found incidentally in the femur of a 31-year-old female. Magnetic resonance imaging and computed tomography of the femur demonstrated an intracortical fatty lesion in the posterolateral aspect of the diaphysis. The intracortical lesion showed some intramedullary extension, multiple septations, and dot-like calcifications [more...]

Skeletal Radiology, 07/23/07

Primary atypical sacral meningioma - not always benign
Bhadra, A., et al. - We present a case of an atypical recurrent meningioma of the sacrum with pulmonary metastasis in a 31-year-old man. He presented with deep-seated buttock pain and urinary hesitancy for 3 months. MRI revealed a lesion occupying the central and left side of the sacral canal at the S1-S2 level. Surgical excision of the lesion via a posterior approach was undertaken, and the patient became symptom-free post-operatively [more...]

Skeletal Radiology, 07/23/07

Fibrous dysplasia localized to spine: a diagnostic dilemma
Gogia, N., et al. - Fibrous dysplasia of the spine is uncommon, especially in monostotic form. Isolated vertebral involvement in polyostotic form is very rare. We report a case of polyostotic fibrous dysplasia with lesions localized to dorso-lumbar spine in a 45-year-old rheumatoid arthritis patient. No associated appendicular lesions, cutaneous manifestations or endocrinopathies were seen [more...]

Skeletal Radiology, 07/20/07

Morel-Lavallee lesion in an adolescent with ultrasound and MRI correlation
Mukherjee, K., et al. - The Morel-Lavallee lesion is a serous collection in the region of the greater trochanter, resulting from a closed degloving injury at the deep fascial interface. Imaging demonstrates characteristic appearance in relation to this lesion, differentiating it from other mass lesions. We report a case of Morel-Lavallee lesion in an adolescent, with ultrasound and MRI correlation [more...]

Skeletal Radiology, 07/20/07

Contrast enhanced cartilage imaging: Comparison of ionic and non-ionic contrast agents
Wiener, E., et al. - This study indicates that for morphologically intact cartilage only the amount of contrast agents within cartilage is determined by the charge but not the spatial distribution across cartilage thickness. In addition, R2 can be considered for quantification of contrast agent concentrations, since it is of the same magnitude and less time consuming to measure than R1 [more...]

European Journal of Radiology, 07/19/07

Gas-filled parasymphyseal pubic cyst associated with degenerative joint disease
Martel, J.-P., et al. - We hypothesize that the gas within the parasymphyseal cystic mass arose from a vacuum phenomenon in the pubic symphysis, with subsequent extrusion of gas from the joint into the cyst itself. It is important for radiologists to be aware of the existence of this entity to avoid unnecessary surgery for patients [more...]

Skeletal Radiology, 07/19/07

Recurrent gossypiboma in the thigh
Puri, A., et al. - Gossypiboma, an iatrogenic mass lesion caused by a retained surgical sponge is an extremely rare event following musculoskeletal procedures. This entity is therefore a very unusual experience and can create considerable confusion. Unsuspecting surgeons may thus be caught out by this unlikely presentation. We present our experience with a recurrent gossypiboma in the thigh occurring several years after surgical evacuation of a similar gossypiboma from the same anatomic location with interval resolution of symptoms [more...]

Skeletal Radiology, 07/19/07

Congenital osteofibrous dysplasia associated with pseudoarthrosis of the tibia and fibula
Teo, H., et al. - The association between congenital pseudoarthrosis and osteofibrous dysplasia of the tibia and fibula is a rare entity that has been recently recognized. We report a male newborn who was found to have swelling and deformity of the left lower leg. Radiographs and magnetic resonance imaging showed an extensive destructive lesion of the tibial shaft, with dysplastic congenital pseudoarthrosis of the lower fibula [more...]

Skeletal Radiology, 07/19/07

Hip osteoarthritis: What the radiologist wants to know
Karachalios, T., et al. - Osteoarthritis (OA) is the most common disease of the hip joint seen in adults. The diagnosis of OA is based on a combination of radiographic findings of joint degeneration and characteristic subjective symptoms...The present article will review all the clinical information on the hip OA together with an updated radiological approach, with emphasis on the early depiction and the differential diagnosis of the disease [more...]

European Journal of Radiology, 07/18/07

Hip fracture discrimination by the Achilles Insight QUS imaging device
Damilakis, J., et al. - The importance of osteoporosis as a major health problem is well recognized. Its major clinical manifestation is low energy fractures. Considerable effort has been directed towards search of noninvasive methods for assessing osteoporotic fracture risk...QUS variables measured by Achilles Insight can be expected to be useful as indicators of the risk of hip fracture in postmenopausal women [more...]

European Journal of Radiology, 07/18/07

Achondroplasia and enchondromatosis: report of three boys
Numakura, C., et al. - We report on three boys suffering from achondroplasia concurrent with enchondromatosis-like metaphyseal changes. Two boys who were examined by molecular analysis harbored a mutation of FGFR3, which occurs in most achondroplastic individuals. Given the prevalence of achondroplasia and enchondromatosis, the metaphyseal changes in these patients are less likely to represent the coincidence of both disorders, but rather to result from a rare consequence of the FGFR3 mutation [more...]

Skeletal Radiology, 07/18/07

Imaging of the hip in patients with rheumatic disorders
Boutry, N., et al. - Hip joint abnormalities are commonly encountered in patients with rheumatic disorders. Although conventional radiography remains the mainstay for diagnosis of joint damage and subsequent follow-up, magnetic resonance imaging and, to a lesser extent, ultrasound have afforded the ability to detect early signs of articular involvement (i.e., synovitis and bone erosions), and to assess disease activity in treated patients [more...]

European Journal of Radiology, 07/17/07

Femoral head osteonecrosis: Volumetric MRI assessment and outcome
Bassounas, A.E., et al. - Effective treatment of femoral head osteonecrosis (FHON) requires early diagnosis and accurate assessment of the disease severity...Conclusion: The volumetric analysis of preoperative MRI provides useful information with regard to a successful outcome in patients treated with vascularized fibular grafts [more...]

European Journal of Radiology, 07/17/07

Femoroacetabular impingement
Kassarjian, A., et al. - This article reviews the imaging findings of cam and pincer type femoroacetabular impingement. Recognition of these entities will help in the selection of the appropriate treatment with the goal of decreasing the likelihood of early degenerative change of the hip [more...]

European Journal of Radiology, 07/17/07

Osteonecrosis of the femoral head: Etiology, imaging and treatment
Malizos, K.N., et al. - Osteonecrosis of the femoral head is a disabling clinical entity affecting young adults that usually leads to destruction of the hip joint. A high index of suspicion is necessary for the diagnosis due to the insidious onset of the bone infarcts and the lack of specific clinical signs at the early stages. Many etiology-associated factors have been identified reducing thus the number of idiopathic cases. A number of joint salvaging treatment options are available if early diagnosis can be achieved. MR imaging has been proved to be a highly accurate method both for early diagnosis and for staging of the disease [more...]

European Journal of Radiology, 07/17/07

The accuracy of magnetic resonance imaging of the hands and feet in the diagnosis of early rheumatoid arthritis
Calisir, C., et al. - To analyze MRI findings of early RA in the hand and foot joints and to determine any discrepancies between MRI findings in the hands and feet...Conclusion: Evidence of foot involvement is a frequent occurrence in early RA [more...]

Joint, Bone, Spine, 07/17/07

Subchondral insufficiency fracture of the femoral head in younger adults
Yamamoto, T., et al. - We report two cases of subchondral insufficiency fracture of the femoral head observed in younger adults without any history of overexertion. In both cases, MRI revealed an irregular, discontinuous low-intensity band on the T1-weighted images. Both patients were treated operatively, and histological examination confirmed the diagnosis of subchondral fracture. A diagnosis of subchondral insufficiency fracture needs to be put in as one of the diagnoses in younger patients with a hip pain [more...]

Skeletal Radiology, 07/17/07

Radiofrequency ablation of two femoral head chondroblastomas
Petsas, T., et al. - Chondroblastoma is a rare benign cartilaginous bone tumor. Surgical resection is the treatment of choice for pain relief and prevention of further growth. Open surgical techniques are associated with complications, particularly when the tumors are located in deep anatomical sites. The authors performed RF ablation in two cases of subarticular femoral head chondroblastomas and emphasize its positive impact. The clinical course, the radiological findings and the post treatment results are discussed [more...]

European Journal of Radiology, 07/17/07

The role of MR imaging in staging femoral head osteonecrosis
Zibis, A.H., et al. - Reliability, accuracy and prognostic value of any classification system are important in evaluation and treatment of femoral head osteonecrosis. The purpose of the present study was to correlate the plain radiographs with MRI in femoral head osteonecrosis...The results of the present study suggest that MRI should be incorporated in the classification of osteonecrosis (stages II and III), to add accuracy and prognostic value [more...]

European Journal of Radiology, 07/16/07

Extra-osseous fat fluid level: a specific sign for osteomyelitis
Kumar, J., et al. - Osteomyelitis may pose as a diagnostic dilemma on various imaging modalities and may be confused with neoplasms and other pathology. Although a rare finding, extra-osseous fat fluid level, especially when associated with spongy bone destruction, can be considered a specific sign of osteomyelitis...A case of osteomyelitis is presented with the demonstration of extra-osseous fat fluid level. Our case is unique in providing exquisite CT and MRI correlation [more...]

Skeletal Radiology, 07/16/07

Recurrent acute low back pain secondary to lumbar epidural calcification
Ziadé, M., et al. - We propose that epidural calcification secondary to aseptic spondylodiscitis is the main cause of acute back pain in this patient. A possible mechanism may be the pro-inflammatory effects of calcium pyrophosphate or hydroxyapatite crystal deposition within the epidural space [more...]

Skeletal Radiology, 07/13/07

Radiologic findings of the flexor pollicis longus hypoplasia
Alicioglu, B., et al. - A case of a 10-year-old boy with hypoplasia of the flexor pollicis longus and without other associated anomalies and trauma history is reported. Flexor pollicis longus tendon anomalies are rare; several types of this congenital anomaly have been reported in the literature. The diagnosis should be considered to the conditions of a patient who was unable to flex the interphalangeal joint of the thumb [more...]

Skeletal Radiology, 07/13/07

A Detailed Morphologic and Functional Magnetic Resonance Imaging Study of the Craniocervical Junction in Adolescent Idiopathic Scoliosis
Chu, W.C.W., et al. - To determine the morphology of cerebellar tonsil, foramen magnum, and dynamic flow of CSF at the craniocervical junction in AIS patients versus normal controls and their correlation with somatosensory cortical evoked potentials (SSEP)...Conclusion: Peak CSF velocities through foramen magnum were not significantly different in AIS subjects despite the presence of low-lying cerebellar tonsils. This might be explained by the compensatory effect of larger foramen magnum in AIS subjects [more...]

Spine, 07/13/07

Magnetic resonance imaging of cauda equina syndrome in long-standing ankylosing spondylitis
Arslanoglu, et al. - The cauda equina syndrome is an uncommon complication of long-standing ankylosing spondylitis and its aetiology is controversial. We report a case of the cauda equina syndrome, erosion of the posterior elements of the lumbar spine and traction of the lumbar nerve roots because of multiple dural diverticula in a patient with long-standing ankylosing spondylitis [more...]

Australasian Radiology, 07/13/07

Deltoid muscle and tendon tears in patients with chronic rotator cuff tears
Ilaslan, H., et al. - Tears of the deltoid muscle or tendon is an unusual finding, but they can be seen in patients with chronic massive rotator cuff tears. Partial thickness tears tend to involve the undersurface of the deltoid muscle and tendon. Associated findings such as intramuscular cyst or ganglion in the deltoid muscle belly and subcutaneous edema or fluid-like signal overlying the deltoid in a patient with a rotator cuff tear should raise the suspicion of a deltoid tear [more...]

Skeletal Radiology, 07/12/07

MRI diagnosis of hypertrophic osteoarthropathy from a remote childhood malignancy
Sainani, N., et al. - We report a case of a healthy 22-year-old female who presented to our institution with pain and swelling in the thighs and legs. She had a history of childhood nasopharyngeal lymphoepithelioma. Radiographs of the knees were negative. Magnetic resonance imaging (MRI) showed features suggestive of bilateral periostitis. Because of the propensity of the rare childhood nasopharyngeal lymphoepithelioma to present with HOA, this entity was included in the differential diagnosis [more...]

Skeletal Radiology, 07/12/07

Imaging findings of avalanche victims
Grosse, A., et al. - Skiing and hiking outside the boundaries remains an attractive wilderness activity despite the danger of avalanches. Avalanches occur on a relatively frequent basis and may be devastating. Musculoskeletal radiologists should be acquainted with these injuries...A wide spectrum of injuries can be found in avalanche victims, ranging from extremity fractures to massive polytrauma. Asphyxia remains the main cause of death along with hypoxic brain injury and hypothermia [more...]

Skeletal Radiology, 07/11/07

The relationship of glenoid and humeral version with supraspinatus tendon tears
Tokgoz, N., et al. - No significant differences were found between these groups for humeral head version and the acromio-glenoid and supraspinatus-glenoid angles, which might contribute to extrinsic impingement by narrowing the supraspinatus tendon outlet. Differences in glenoid and humeral version may be responsible for RC tears by changing the orientation of the rotator cuff and thus increasing shearing stress [more...]

Skeletal Radiology, 07/11/07

An evaluation of reconstructed ACL impingement on PCL using MRI
Nishimori, M., et al. - Using magnetic resonance imaging (MRI), we evaluated 42 reconstructed anterior cruciate ligaments (ACLs) for impingement on corresponding posterior cruciate ligaments (PCLs) in the knee-extended position...This study indicated that reconstructed ACLs in the impingement-positive group pressed the PCLs more posteriorly than did the impingement-negative group [more...]

Magnetic Resonance Imaging , 07/11/07

Radiography of successful bone marrow transplantation for osteopetrosis
Costelloe, C., et al. - Hematopoietic stem cell transplantation (HSCT) is the only curative therapy for autosomal recessive infantile malignant osteopetrosis, an otherwise fatal disease. HSCT has also been utilized in patients with the less severe autosomal recessive intermediate form in an attempt to correct hematologic abnormalities and halt cranial nerve deficits caused by progressive cranial foraminal stenosis. Successful engraftment is accompanied by rapid normalization of radiographic signs of osteopetrosis [more...]

Skeletal Radiology, 07/11/07

Shoulder MR arthrography of the posterior labrocapsular complex in overhead throwers with pathologic internal impingement and internal rotation deficit
Tuite, M., et al. - Overhead-throwing athletes with internal impingement pain and internal rotation deficit tend to have a thicker labrum and a shallower capsular recess in the posterior inferior shoulder joint than do non-overhead-throwing athletes. In many, the posteroinferior capsule is also thickened. These MR findings should alert the radiologist to closely inspect the posterior cuff and posterosuperior labrum for the tears associated with internal impingement [more...]

Skeletal Radiology, 07/11/07

Solitary myofibroma of the lumbar vertebra: adult case
Konishi, E., et al. - We present the first known adult case of solitary myofibroma of bone, which affected a lumbar vertebra in a 33-year-old male. Radiography identified a purely lytic lesion with a sclerotic rim in the right pedicle of L1...This case of solitary myofibroma of bone is exceptionally rare because of its occurrence in an adult older than 20 years of age and its location at an extra-craniofacial site [more...]

Skeletal Radiology, 07/11/07

Magnetic Resonance Imaging of Pelvis and Hips in Infants, Children, and Adolescents: A Pictorial Review
Carpineta, L., et al. - Due to its superior tissue resolution, magnetic resonance imaging has become the modality of choice for assessing pathologies of soft tissues, joints, cartilage, and bone marrow. This is also true in the pediatric population. This article reviews magnetic resonance imaging appearances and techniques for a variety of congenital abnormalities and acquired conditions including posttraumatic, infectious, inflammatory, ischemic, metabolic, benign, and malignant processes [more...]

Current Problems in Diagnostic Radiology, 07/10/07

Acetabular retroversion as a rare cause of chronic hip pain: recognition of the "figure-eight" sign
Banks, K., et al. - While well-recognized in the orthopedic literature as a cause of chronic hip pain, acetabular retroversion has not been specifically described in the radiologic literature...These cases illustrate the utility of the "figure-eight" sign in identifying abnormalities of acetabular version and thus assisting clinicians in properly identifying these individuals so that appropriate therapy may be instituted [more...]

Skeletal Radiology, 07/10/07

Familial Mediterranean fever mimicking septic arthritis: distinguishing with diffusion weighted imaging
Oner, A.Y., et al. - FMF arthritis is generally monoarticular in origin. The affected joint is hot, tender, red and mimics septic arthritis. Conventional imaging findings, including magnetic resonance imaging (MRI) and ultrasound, do not help differentiate between these two entities. The final diagnosis depends on culture of the synovial fluid, and therefore initiation of proper drug therapy can be delayed. Diffusion weighted imaging (DWI), with its ability to detect altered water-proton mobility, might play an important role as a fast and non-invasive problem-solving tool in this setting. We here present MRI and DWI findings of a case of FMF arthritis mimicking septic arthritis [more...]

Skeletal Radiology, 07/10/07

Imaging of cervical spine injuries of childhood
Khanna, G., et al. - This article reviews the epidemiology of pediatric cervical spine trauma, normal variants seen in children and specific injuries that are more common in the pediatric population. We also propose an evidence-based imaging protocol to avoid unnecessary imaging studies and minimize radiation exposure in children [more...]

Skeletal Radiology, 07/10/07

MRI of rupture of the spring ligament complex with talo-cuboid impaction
Kavanagh, E., et al. - We report MRI findings in a 30-year-old man who presented with traumatic rupture of the spring ligament complex, seen following dislocation of the talonavicular joint. We also describe the previously unreported MRI features of talo-cuboid impaction secondary to disruption of the spring ligament complex [more...]

Skeletal Radiology, 07/10/07

Single-shot fast spin-echo diffusion tensor imaging of the lumbar spine at 1.5 and 3 T
Carballido-Gamio, J., et al. - Diffusion tensor imaging (DTI) of the lumbar spine could improve diagnostic specificity. The purpose of this work was to determine the feasibility of and to validate DTI with single-shot fast spin-echo (SSFSE) for lumbar intervertebral discs at 1.5 and 3 T...Results indicate that DTI-SSFSE is a candidate as a clinical sequence for obtaining diffusion tensor images of the lumbar intervertebral discs with scan times shorter than 4 min [more...]

Magnetic Resonance Imaging , 07/10/07

Pixel-by-pixel analysis of DCE MRI curve patterns and an illustration of its application to the imaging of the musculoskeletal system
Lavini, C., et al. - The result of the analysis is rendered in multislice, 2D color-coded images. With this approach, we show not only that differences on a short distance range of the TIC patterns are significant and cannot be appreciated with a conventional ROI analysis but also that the information that shape maps and conventional standard DCE MRI parameter maps convey are substantially different [more...]

Magnetic Resonance Imaging , 07/10/07

Delayed gadolinium-enhanced magnetic resonance imaging of the meniscus: An index of meniscal tissue degeneration?
Krishnan, N., et al. - Much attention has been focused recently on the need for a better understanding of the mechanisms and natural progression of knee osteoarthritis (OA), particularly in its early stages...Conclusion: While the biophysical basis for the T1(Gd) results relative to meniscus molecular structure needs investigation, these findings introduce a potential means of examining the time course of meniscal tissue change in the development and progression of arthritis [more...]

Arthritis & Rheumatism, 07/10/07

Myxoid chondrosarcoma in the calcaneus: a case report with MR imaging findings
Kwon, J., et al. - Skeletal myxoid chondrosarcoma is an extraordinarily rare neoplasm with a distinct histological morphology. Herein, we report a case of a myxoid chondrosarcoma in the calcaneus of a 20-year-old man with a description of its MR imaging (MRI) and histological findings [more...]

Skeletal Radiology, 07/10/07

E-learning in ultrasonography: a web-based approach
Filippucci, E., et al. - To propose e-learning methods that address the fundamental problems related to sonographic training in rheumatology...Conclusions: The e-learning methods described in this report represent the first attempt to adopt a novel technique to circumvent several of the inherent barriers to the many facets of teaching musculoskeletal ultrasound to a wide audience [more...]

Annals of Rheumatic Diseases, 07/10/07

Injuries to the Carpal Bones Revisited
Lohan, D., et al. - Falls on the outstretched hand, with resultant pain in the carpal region, account for a significant number of referrals to emergency rooms worldwide. Not only do they represent a significant proportion of the radiological workload arising from emergency rooms, interpretation of the images acquired is often difficult due to the complex anatomy of this region, compounded by an inability to obtain adequate views due to patient discomfort [more...]

Current Problems in Diagnostic Radiology, 07/09/07

Major-Nerve Schwannomas versus Intramuscular Schwannomas
Shimose, S., et al. - A schwannoma is a benign peripheral nerve tumor. Predicting the involvement of a nerve on symptoms or magnetic resonance (MR) findings is crucial to the diagnostic process...Conclusion: In major-nerve schwannomas, the Tinel-like sign, split-fat sign, entering and exiting nerve, and low-signal margin are commonly observed and useful for diagnosis. In intramuscular schwannomas, these characteristic findings are less common, which makes diagnosis difficult [more...]

Acta Radiologica, 07/09/07

A Comparison of CT Arthrography of the Wrist to Findings During Wrist Arthroscopy
Bille, B., et al. - To determine the accuracy of computed tomography after wrist arthrogram (CT arthrogram) compared with findings during wrist arthroscopy as interpreted by a musculoskeletal radiologist and a board-certified hand surgeon...Conclusions: Computed tomography arthrogram of the wrist is highly accurate at detecting SLIL, LTIL, and central TFCC tears with high sensitivity and specificity. It is not as accurate at identifying peripheral tears [more...]

Journal of Hand Surgery, 07/06/07

The diagnostic performance characteristics of imaging techniques used in the management of scaphoid fractures
Calderon, S.-L., et al. - The shortcomings of diagnostic imaging in scaphoid fracture management are magnified by the low prevalence of true fractures among suspected fractures and of displaced fractures among radiographically visible fractures. The diagnostic performance characteristics of scaphoid imaging can be improved as much by developing better clinical diagnostic criteria that increase the prevalence of true fractures and fracture displacement among patients in whom these are suspected as it can by developing diagnostic imaging techniques with fewer false positive tests [more...]

Current Opinion in Orthopedics, 07/06/07

MR imaging findings of pyogenic bacterial myositis (pyomyositis) in patients with local muscle trauma: illustrative cases
Theodorou, S., et al. - Pyogenic myositis (pyomyositis) represents a bacterial infection of muscle, usually caused by Staphylococcus aureus that is endemic in tropical regions. Pyomyositis commonly affects patients who are immunocompromised or who have underlying chronic disorders. Lower extremity localization of infection is typical. The most common pattern of disease, however, appears to be a solitary abscess in the quadriceps musculature [more...]

Emergency Radiology, 07/06/07

Imaging of elbow pathology
Bancroft, L.W., et al. - With improved diagnostic imaging techniques, radiologists are able to provide more accurate diagnoses of elbow pathology. This article will provide an overview of the imaging characteristics of some disease processes that can affect the elbow, such as trauma, arthropathy, and infection [more...]

Applied Radiology, 07/05/07 Free Full Text   Registration Required   

MRI Findings of 26 Patients with Parsonage-Turner Syndrome
Scalf, R.E., et al. - Conclusion: MRI of the brachial plexus and shoulder in patients with Parsonage-Turner syndrome showed intramuscular denervation changes involving one or more muscle groups of the shoulder girdle. The supraspinatus and infraspinatus muscles were the most commonly involved. MRI is sensitive for detecting signal abnormalities in the muscles of the shoulder girdle of patients with Parsonage-Turner syndrome. MRI may be instrumental in accurately diagnosing the syndrome [more...]

American Journal of Roentgenology, 07/03/07

Zebra Lines of Pamidronate Therapy in Children
Muderis, M.A., et al. - Pamidronate therapy is increasingly used in children for the treatment of low bone mineral density and increased bone fragility resulting from a spectrum of conditions. The aim of the present study was to determine and describe the radiographic features associated with cyclical bisphosphonate therapy in the growing skeleton...Conclusions: The term zebra lines is proposed as a descriptive term for the characteristic pattern of metaphyseal banding seen on the radiographs of children receiving cyclical bisphosphonate therapy [more...]

Journal of Bone and Joint Surgery, 07/03/07

In vivo T1 and T2 mapping of articular cartilage in osteoarthritis of the knee using 3 T MRI
Li, X., et al. - Our results suggest that both in vivo T1 and T2 relaxation times increase with the degree of cartilage degeneration. T1 relaxation time may be a more sensitive indicator for early cartilage degeneration than T2. The ability to detect early cartilage degeneration prior to morphologic changes may allow us to critically monitor the course of OA and injury progression, and to evaluate the success of treatment to patients with early stages of OA [more...]

Osteoarthritis and Cartilage , 07/03/07

Expert agreement confirms that negative changes in hand and foot radiographs are a surrogate for repair in patients with rheumatoid arthritis
van der Heijde, D., et al. - Conclusion: Repair was detected reliably by a majority of the panel on viewing paired images based on a better/worse decision and assigning sequence in a set of images that were blinded for sequence by an independent project manager. In this test set of images repair was manifested by a reduction in the size of an erosion in many cases and size was one feature that aided the experts to detect repair but cannot be the only one; the experts had to find other features to tell whether a smaller erosion was the first in a sequence of radiographs in a patient with progressive damage or the second film in a patient exhibiting repair [more...]

Arthritis Research & Therapy, 07/03/07

Gadolinium Contrast Agent is of Limited Value for Magnetic Resonance Imaging Assessment of Synovial Hypertrophy in Hemophiliacs
Lundin, B., et al. - Conclusion: The optimal time interval for volume assessment of synovial hypertrophy after injection of gadolinium contrast agent is dose dependent. Hemophiliacs without recent bleeds have minor to abundant synovial hypertrophy in joints with pronounced radiographic changes. Dynamic MRI is not useful for evaluating hemophilic arthropathy, and gadolinium contrast agent is not routinely indicated for MRI scoring of joints in hemophiliacs [more...]

Acta Radiologica, 07/02/07

Osteomyelitis-Mimicking Primary Bone Lymphoma at Hip Prosthetic Site
Hsieh, T.-C., et al. - A 30-year-old woman had undergone right hip prosthetic replacement with recurrent pain in this area. Because of her history of pulmonary tuberculosis, periprosthetic infection was taken into consideration. The subsequent imaging studies (plain radiography, Tc-99m bone scan, and Ga-67 inflammation scan) were considered to be plausible for osteomyelitis in the periprosthetic bone, but was finally proven to be lymphoma. Similar findings have been found previously but they were not associated with radionuclide studies, such as Ga-67 scans [more...]

Clinical Nuclear Medicine , 07/02/07