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Date this page was last updated: 12/21/2007 06:59:52 PM

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MDCT and Radiography of Wrist Fractures
Welling RD et al. - Thirty percent of wrist fractures were not prospectively diagnosed on radiography, suggesting that CT should be considered after a negative radiographic finding if clinically warranted. The location of a dorsal scaphoid avulsion fracture emphasizes the need for specific radiographic views or cross-sectional imaging for diagnosis [more...]

American Journal of Roentgenology, 12/21/07

Prevalence and MRI-Anatomic Correlation of Bone Cysts in Osteoarthritic Knees
Pouders C et al. - Interspinous and weight-bearing tibial cysts are common in severe knee osteoarthritis. The cysts contain necrotic bone fragments and are lined by a nonepithelial fibrous wall. Our findings support the hypothesis that interspinous cysts could result from repetitive bone stresses through the cruciate ligaments. Our findings do not support the use of the term "herniation cyst" [more...]

American Journal of Roentgenology, 12/21/07

Magnetic resonance imaging of bone marrow in oncology
Hwang S et al. - Important factors that affect MR signals and allow detection of marrow lesions include alterations in fat-water distribution, destruction of bony trabeculae, and contrast enhancement. This two-part article reviews and illustrates these issues, with an emphasis on the practical application of MR imaging to facilitate differentiation of normal marrow, tumor, and treatment-related marrow changes in oncology patients [more...]

Skeletal Radiology, 12/20/07

Clinical, MRI, and Arthroscopic Findings Associated with Failure to Diagnose a Lateral Meniscal Tear on Knee MRI
De Smet AA et al. - Lateral meniscal tears are more likely to be missed if the tear involves only one third of the meniscus or is in the posterior horn. Longitudinal peripheral tears of the posterior horn were the most commonly missed tears that could be seen in retrospect [more...]

American Journal of Roentgenology, 12/20/07

Magnetic resonance imaging in the evaluation of osteochondritis dissecans of the patella
Choi, Y., et al. - Magnetic resonance imaging of patellar OCD typically shows subchondral deformity and variable abnormalities of the overlying patellar cartilage located central-inferiorly on the patella [more...]

Skeletal Radiology, 12/20/07

Stress fractures of the ribs in elite competitive rowers
Dragoni, S., et al. - Stress fractures of the ribs are relatively common in competitive rowers. They are characterized by increasing lateral chest pain and typical scintigraphic, radiographic and sonographic findings [more...]

Skeletal Radiology, 12/20/07

Surgical outcome of thoracic myelopathy secondary to ossification of ligamentum flavum
Parka BC et al. - OLF is a rare cause of thoracic myelopathy. The frequency appears to have been rarely reported in South Korean subjects. CT with sagittal reconstructions and MRI are helpful for diagnosis and spinal cord involvement. When neurologic symptoms develop, decompressive laminectomy should be done immediately and the surgical outcome is generally good if hyperintense intramedullary signal changes of spinal cord have not yet developed [more...]

Joint, Bone, Spine, 12/20/07

Correlation of atrophy and fatty infiltration on strength and integrity of rotator cuff repairs
Gerber C et al. - In 13 patients, the development of supraspinatus muscle atrophy and fatty infiltration after rotator cuff tendon repair was quantified prospectively via magnetic resonance imaging. Intraoperative electrical nerve stimulation at repair showed that the maximal supraspinatus tension (up to 200 N) strongly correlated with the anatomic cross-sectional muscle area and with muscle fatty infiltration (ranging from 12 N/cm2 in Goutallier stage 3 to 42 N/cm2 in Goutallier stage 0) [more...]

Journal of Shoulder and Elbow Surgery, 12/20/07

Radiological imaging features of non-uterine leiomyosarcoma
O'Sullivan, P.J., et al. - Leiomyosarcomas are unusual soft-tissue tumours that occur in the retroperitoneum, peripheral soft tissues, gastrointestinal and genito-urinary tracts, vessels and (rarely) in bone. The aim of this pictonal review is to delineate the more specific radiological features that would suggest a radiological diagnosis of leiomyosarcoma prior to biopsy [more...]

British Journal of Radiology, 12/19/07

Berardinelli-Seip lipodystrophy
Kobashi, Y., et al. - Absence of fat may be generalized, or depending upon the subtype of the disease, may not affect areas where fat plays a mechanical function, such as the palms and soles. Muscles appear hypertrophic. In addition, characteristic, but idiopathic, peri-articular lytic lesions may be seen in some individuals. The combination of imaging, clinical, and laboratory findings is characteristic and readily recognized once the components of the syndrome are known [more...]

Skeletal Radiology, 12/18/07

Anomalous insertion of the medial meniscus into the anterior cruciate ligament: the MR appearance
Cha, J.-G., et al. - The AIMMs were inserted into the lower portion of the ACL in eight knees, the middle portion in five knees, and the intercondylar notch in five knees. Meniscal tears (10 medial, 10 lateral) were found in 20 knees of 16 patients. Six knees of five patients showed a discoid meniscus. 15 knees of 14 patients showed no transverse ligament on MR imaging. An AIMM has the potential to be misinterpreted as a meniscal tear, ACL tear or infrapatellar plica on knee MR imaging. Familiarity with the characteristic MR findings can aid in the detection of an AIMM into the ACL [more...]

British Journal of Radiology, 12/18/07

Monitoring rheumatoid arthritis synovitis with 99mTc-anti-CD3
Martins, F.P.P., et al. - They were able to differentiate patients in remission from patients with active synovitis, according to DAS 28. In contrast, there was no correlation between the radiopharmaceutical accumulation and the patients' age, gender, duration of disease or erythrocyte sedimentation rate. A relatively high disease activity score of 28 joints (4.08±1.74) was found in the majority of patients. In conclusion, 99mTc–OKT3 scintigraphy is a reliable and objective method for detecting synovial activity, and can be used to observe disease prognosis [more...]

British Journal of Radiology, 12/18/07

MR imaging characteristics in primary lymphoma of bone with emphasis on non-aggressive appearance
Heyning, F., et al. - The MR imaging appearance of PLB is variable. In 31% of PLB patients, the tumor was intra-osseous, with linear cortical signal abnormalities or even normal-appearing or thickened cortical bone without soft-tissue mass, and, as such, PLB may not infrequently look non-aggressive on MR imaging [more...]

Skeletal Radiology, 12/18/07

Percutaneous augmentation of the superior pubic ramus with polymethyl methacrylate: treatment of acute traumatic and chronic insufficiency fractures
Beall, D., et al. - Although the injection of PMMA into the vertebral body is a very common procedure that has been performed for over 2 decades for the percutaneous treatment of vertebral body fractures, the percutaneous injection of PMMA has not been reported in the English literature as treatment for superior pubic ramus fractures. We report the percutaneous treatment of an acute superior pubic ramus fracture and of a chronic insufficiency fracture of the superior pubic ramus using a parasymphyseal approach to access the region of injury [more...]

Skeletal Radiology, 12/18/07

Assessment of three-dimensional set-up errors in conventional head and neck radiotherapy using electronic portal imaging device
Gupta, T., et al. - The present study report compares well with published set-up error data relevant to head and neck radiotherapy practice. The set-up margins were <5 mm in all directions. Caution is warranted against adopting generic margin recipes as different margin generating recipes lead to a different probability of target volume coverage >[more...]

BMC Medical Imaging , 12/17/07

Significant Benefit of Multimodal Imaging: PET/CT Compared with PET Alone in Staging and Follow-up of Patients with Ewing Tumors
Gerth, H.U., et al. - PET/CT is significantly more accurate than PET alone for the detection and localization of lesions and improves staging for patients with Ewing tumor. The hybrid technique is superior to PET alone in terms of sensitivity, specificity, and accuracy, mainly because of the detection of new lesions [more...]

The Journal of Nuclear Medicine, 12/17/07

MRI as a problem-solving tool in unexplained failed total hip replacement following conventional assessment
Johnston, C., et al. - MRI may be successfully undertaken in patients following total hip replacement, and, when performed, it frequently leads to an unsuspected diagnosis, allowing informed patient treatment. In this study it allowed the identification of an unsuspected diagnosis in over 50% of cases [more...]

Skeletal Radiology, 12/17/07

MRI changes in psoriatic dactylitis extent of pathology, relationship to tenderness and correlation with clinical indices
Healy, P.J., et al. - To quantify the extent of inflammation in psoriatic dactylitis and to examine the relationship between clinical and magnetic resonance imaging (MRI) data in both tender and non-tender dactylitis...MRI images demonstrate widespread abnormalities in digits of people with psoriatic arthritis. Tender dactylitic digits have more abnormalities than other digits but the relationship between clinical and MRI scores is not strong [more...]

Rheumatology, 12/17/07

The Clinical Applications of Peripheral Nerve Imaging in the Upper Extremity
Khachi, G., et al. - Use of different imaging modalities in the diagnosis of peripheral nerve pathology has been growing steadily. This review attempts to summarize their use, particularly with regard to ultrasound and magnetic resonance imaging, and their practical applications in the clinical setting [more...]

Journal of Hand Surgery, 12/17/07

MRI of rheumatoid arthritis image quantitation for the assessment of disease activity, progression and response to therapy
Hodgson, R.J., et al. - Magnetic resonance imaging (MRI) allows the direct visualization of many bone and soft tissue changes in rheumatoid arthritis. Synovitis volume, bone marrow oedema and bone erosions are suitable for serial measurement. The outcome measures in rheumatoid arthritis clinical trials (OMERACT) rheumatoid arthritis magnetic resonance imaging (RAMRIS) system is designed to allow straightforward, reproducible scoring of all these features [more...]

Rheumatology, 12/17/07

Magnetic resonance imaging findings of injuries to the calf muscle complex
Koulouris, G., et al. - This retrospective study utilizing MRI demonstrates that the medial head of the gastrocnemius is the most commonly injured muscle of the calf, closely followed by the soleus, the latter finding rarely reported in the sonographic literature. Dual injuries of the calf muscle complex occur much more commonly than previously reported and may be of prognostic significance [more...]

Skeletal Radiology, 12/14/07

Comparison of MR arthrography with arthroscopy of the hip for the assessment of intra-articular loose bodies
Neckers, A., et al. - To assess the specificity and sensitivity of MR arthrography of the hip in comparison with arthroscopy for the evaluation of intra-articular loose bodies. Over a 3-year period, 81 consecutive patients underwent a total of 82 hip arthroscopies by a single orthopedic surgeon for intractable hip pain. Of the 82 arthroscopies, 70 had pre-operative MR arthrograms. Of these, 57 were available for retrospective review, after which they were compared with the operative notes of the subsequent arthroscopies [more...]

Skeletal Radiology, 12/14/07

Cystic teratoma of the diaphragm which mimicked soft tissue lipoma
Ariizumi, T., et al. - We report a case of cystic teratoma of the diaphragm that was considered to be a soft tissue lipoma by the preoperative examination. A magnetic resonance imaging revealed an 8×8 cm well-demarcated, homogeneous mass. On T1- and T2-weighted imaging, the mass was isointense to fat. On the fat-suppressed imaging, the signal from the mass was reduced to the same degree as subcutaneous fat. We performed marginal excision. The tumor contained a large number of hairs and oily liquid; and it was connected to the diaphragm [more...]

Skeletal Radiology, 12/14/07

A different perspective for radiological evaluation of experimental osteomyelitis
Aktekin, C., et al. - Periosteal reaction and diaphyseal widening demonstrated significant differences within 3 weeks of treatment, contrary to the general scores. After 6 weeks of treatment, individual criteria, including diaphyseal widening, osteolysis and BMC but only one of the general grading scores, were able to differentiate between treatment group [more...]

Skeletal Radiology, 12/13/07

The effects of multidisciplinary therapy on positron emission tomography of the brain in fibromyalgia
Walitt, B., et al. - Aberrant central neurological functioning is believed to contribute to the abnormal sensations of fibromyalgia (FM). This pilot study sought to determine if alterations in regional brain metabolism from baseline occur in FM after undergoing a multidisciplinary therapeutic regimen [more...]

Rheumatology International, 12/13/07

Generalized intramuscular granulocytic sarcoma mimicking polymyositis
Fritz, J., et al. - We report a case of granulocytic sarcoma exclusively manifesting as diffuse intramuscular infiltration of the proximal upper and lower limb girdle and the torso muscles in a patient with previous history of acute myelogenous leukemia 5a. Whole-body CT showed widespread distribution of ill-defined intramuscular, homogeneously enhancing lesions. On whole-body MRI, lesions were homogeneously hyperintense on fat saturated T2-weighted images, isointense on T1-weighted images and strongly enhancing after intravenous gadolinium contrast administration [more...]

Skeletal Radiology, 12/13/07

Prenatal diagnosis of cervical chondrocutaneous vestige
Gilboa, Y., et al. - Cervical chondrocutaneous vestiges or remnants originate from anomalous development of the branchial arches in the fourth week of gestation. Owing to their relative rarity, published data of cervical chondrocutaneous vestiges remain scarce. We report on the diagnosis and associated anomalies of cervical chondrocutaneous vestiges in three fetuses. The association of cervical chondrocutaneous vestige with other anomalies emphasizes the importance of performing meticulous examination and biochemical marker analysis in affected cases [more...]

Ultrasound in Obstetrics and Gynecology, 12/12/07

An unusual cause of calf hypertrophy: severe lumbar canal stenosis with S1 nerve root radiculopathy
Ong, V., et al. - We report an unusual case of calf hypertrophy in a 62-year-old woman who developed progressive enlargement of the left calf in association with chronic lower back pain. Magnetic resonance imaging (MRI) of the affected calf confirmed enlargement of the soleus muscle. MRI of the lumbar spine showed multilevel degenerative changes [more...]

APLAR Journal of Rheumatology, 12/12/07

An unusual presentation of muscular sarcoidosis
Suresh, S., et al. - Symptomatic muscular sarcoidosis is very rare and has been reported in only 1.4% of known sarcoidosis cases, while skeletal involvement has been reported in 1-13%. Different types of muscular and osseous sarcoidosis have been described in the literature. We present a case of muscular sarcoidosis, which is unique in its clinical presentation and imaging findings. The presence of the marked periosteal reaction, which has never been described with muscular sarcoidosis, also makes this case unique [more...]

Skeletal Radiology, 12/12/07

Giant cell tumor complicating Paget disease of long bone
Hoch, B., et al. - Conventional plain films and MRI demonstrated the characteristic bone changes of Paget disease and an associated lytic lesion involving the epiphyseal and metaphyseal regions of the distal femur. A diagnostic curettage showed the characteristic histopathologic features of Paget disease and GCT. There was no evidence of malignancy. The clinicopathologic features of this rare lesion are described and correlated with a review of the literature [more...]

Skeletal Radiology, 12/11/07

Ultrasonographic detection of spontaneous rupture in the Biceps tendon of a patient with rheumatoid arthritis
Kim, H.-S., et al. - Ultrasonography is a useful imaging modality for the diagnosis of pathologic conditions in the biceps tendon. We describe a 64-year old man with rheumatoid arthritis (RA) who suddenly developed a painless lump in the antecubital region of the right arm. The bulging was prominent when he flexed his forearm. Proximal loss of the long head in biceps tendon could be demonstrated by ultrasonography. The ultrasonographic features of spontaneous isolated biceps tendon rupture occurring in a patient with RA are described [more...]

APLAR Journal of Rheumatology, 12/10/07

Magnetic Resonance Imaging of the Rotator Interval in Patients on Long-term Hemodialysis: Correlation With the Range of Shoulder Motions
Kerimoglu, U., et al. - Long-term hemodialysis results in adhesive capsulitis-like MRI findings in the shoulder joint with nonfatty soft tissue infiltration in the rotator interval that is related to hemodialysis duration. The degree of MRI obliteration of the rotator interval fat strongly correlates with the range limitation of some shoulder motions [more...]

Journal of Computer Assisted Tomography, 12/07/07

A simple way to distinguish bed clothing contamination in a whole body bone scan
Assadi, M., et al. - It is also different from detector contamination by limited area of involvement where detector contamination appears as a line throughout the total body projection. It can be helpful if a nuclear medicine specialist has a brief look at all scans prior to reporting them .In cases where the same pattern of abnormality is repeated in all images, the possibility of technical error such as bed clothing contamination rather than a pathological abnormality should be borne in mind [more...]

BMC Medical Imaging , 12/06/07

Adalimumab significantly reduces both spinal and sacroiliac joint inflammation in patients with ankylosing spondylitis
Lambert, R.G.W., et al. - To compare the efficacy of adalimumab versus placebo in reducing spinal and sacroiliac (SI) joint inflammation, by magnetic resonance imaging (MRI) in patients with active ankylosing spondylitis (AS)...Adalimumab significantly reduced both spinal and SI joint inflammation in patients with active AS after 12 weeks of treatment, and these improvements were maintained for up to 52 weeks [more...]

Arthritis & Rheumatism, 12/06/07

Ultrasound in the diagnosis of a median neuropathy in the forearm
Ginn, S.D., et al. - Electrodiagnostic studies are traditionally used in the diagnosis of focal neuropathies, however they lack anatomical information regarding the nerve and its surrounding structures...A diagnostically challenging case of median neuropathy in the forearm is presented in which high-resolution ultrasound was valuable in establishing an anatomic etiology and directing appropriate management [more...]

BMC Musculoskeletal Disorders, 12/05/07

Sonography of chronic Achilles tendinopathy
Leung, J.L.Y., et al. - Achilles tendinopathy results in enlargement, particularly of the mid- and distal portions of the tendon, disruption of fibrillar pattern, and increase in tendon vascularity. Additional signs are increased Kager's fat pad echogenicity and paratenon thickening. Tendon calcification, changes in retrocalcaneal bursae, and calcaneal contour are not specific for Achilles tendinopathy [more...]

Journal of Clinical Ultrasound, 12/04/07

CT of the Foot: Selected Inflammatory Arthridites
Johnson, P.T., et al. - Although the primary imaging modality for the evaluation of inflammatory arthritis of the foot and ankle is currently magnetic resonance imaging, computed tomography may be performed in some patients and can aid in diagnosis. This article reviews a number of inflammatory arthritic conditions that involve the feet. Computed tomographic findings and the role of computed tomography in diagnosing infection, gout, and rheumatoid arthritis of the foot are discussed [more...]

Journal of Computer Assisted Tomography, 12/04/07

High-Resolution 3D Cartilage Imaging with IDEAL?SPGR at 3 T
Siepmann, D.B., et al. - Compared with fat-saturated SPGR, IDEAL–SPGR imaging combined with parallel imaging at 3 T provides robust fat–water separation and significant improvement in cartilage SNR. Use of IDEAL–SPGR also led to dramatic improvement in cartilage–fluid contrast-to-noise ratio compared with fat-saturated SPGR imaging. Thus, use of IDEAL–SPGR may improve the accuracy of cartilage volume measurements and detection of cartilage surface defects. Excellent evaluation of the morphologic features of the knee cartilage with high-resolution, high-SNR images can be performed in 5 minutes [more...]

American Journal of Roentgenology, 12/03/07

Relationship Between Cement Distribution Pattern and New Compression Fracture After Percutaneous Vertebroplasty
Tanigawa, N., et al. - Although cement distribution patterns do not significantly affect initial clinical response, a higher incidence of new compression fractures is seen in patients with treated vertebrae exhibiting a cleft pattern [more...]

American Journal of Roentgenology, 12/03/07

CT Compared with Arthroscopy in Quantifying Glenoid Bone Loss
Griffith, J.F., et al. - CT has both a high sensitivity and a high specificity for detecting glenoid bone loss, and agreement with arthroscopy regarding the severity of glenoid bone loss is good. CT can be used to assess glenoid bone loss and the need for bone augmentation surgery [more...]