October 03 News Headlines

These are radiology news updates from other sites

Date this page was last updated: 01/07/2007 03:02:39 PM

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October 30, 2003   Case Report: Bony Ghosts - Residual Effects of Severe Growth Arrest - New England Journal of Medicine A 16-year-old boy reported a two-to-three-month history of back pain during sports activities. The pain radiated to the buttocks, but without signs of sciatica. The patient had no history of trauma. His parents had noticed that he had had a growth spurt several months previously. The clinical examination revealed isolated shortening of the hamstrings. Intensive physical therapy resolved the pain. At nine years of age, the patient had undergone a five-month course of corticosteroid therapy for a relapse of severe Schönlein–Henoch purpura with acute nephritis and hematuria, arthralgia, and gastrointestinal involvement...   Ultrasound: Assessment of the distraction osteogenesis wound in patients undergoing mandibular lengthening - Journal of Oral and Maxillofacial Surgery Conclusion: The results of this study indicate that US is an accurate noninvasive technique that may prove to be useful in assessing the mandibular DO regenerate in patients...   Case Report: Delayed Union of a Sacral Fracture: Percutaneous Navigated Autologous Cancellous Bone Grafting and Screw Fixation - Cardiovascular and Interventional Radiology Delayed or non-union of a sacral fracture is a serious clinical condition that may include chronic pain, sitting discomfort, gait disturbances, neurological problems, and inability to work. It is also a difficult reconstruction problem. Late correction of the deformity is technically more demanding than the primary treatment of acute pelvic injuries...

October 29, 2003   Estimation of inflammation by Doppler ultrasound: quantitative changes after intra-articular treatment in rheumatoid arthritis - Annals of Rheumatic Diseases Conclusion: Ultrasound-Doppler seems to be a promising tool for the estimation of synovial activity in arthritis. After intra-articular glucocorticosteroid, changes in RI and fraction of colour pixels may both be used as quantitative measurements of the blood flow...   � Irradiation decreases collagen type II synthesis and increases nitric oxide production and cell death in articular chondrocytes - Annals of Rheumatic Diseases Conclusions: � Irradiation may influence the long term maintenance of cartilage tissue or the aetiology of degenerative joint diseases...   Bone Scan Appearance in Aggressive Osteogenic Sarcoma With Pleural, Lung, Bone, and Soft-Tissue Metastases - Clinical Nuclear Medicine A 40-year-old woman presented with a known case of osteogenic sarcoma of the right leg and underwent below-the-knee amputation. The preoperative workup was negative for distant metastases, and the patient was followed regularly. Two years later she developed dyspnea and chest pain. Computed tomography revealed diffuse left lung metastases with pleural involvement and nodular metastases in the right lung. Tc-99m methylene diphosphonate whole-body bone scanning revealed the amputated right leg with a clean stump but with widespread metastases in the right thigh involving soft tissue and bone, and the pelvis, left femur, and skull. In addition, diffuse left lung metastases involving both parietal pleura and lung parenchyma were seen. Tc-99m methylene diphosphonate uptake has been observed in the soft tissue and lungs in patients with osteogenic sarcoma but is rarely observed in practice with this degree of aggressiveness...   Bilateral Iliac Metastases With Sunburst Pattern From Prostate Cancer - Clinical Nuclear Medicine Bone metastases from prostatic carcinoma commonly exhibit blastic characteristics with radiographically dense lesions. Occasionally they may demonstrate an unusual pattern of spiculation mimicking primary neoplasms of sarcomatous origin ...   Multifactorial Uptake of Tc-99m Methylene Diphosphonate in Chronic Renal Failure - Clinical Nuclear Medicine Soft-tissue calcifications are a frequent complication in patients with chronic renal failure. Numerous underlying factors are thought to favor their formation. A case is presented of a patient who was in end-stage renal failure, secondary to glomerulonephritis. A renal transplant had not been successful. She was on long-term dialysis and had suffered aluminum toxicity (positive desferrioxamine test). She complained of proximal myopathy and bone pain...   Case Report: Scintigraphic Findings of Mycobacterium avium complex Tenosynovitis of the Index Finger in a Patient With Systemic Lupus Erythematosus - Clinical Nuclear Medicine The presented case is a 36-year-old woman with a history of systemic lupus erythematosus for 10 years. She had progressively painful swelling of the right index finger that later proved to be a rare case of tenosynovitis caused by Mycobacterium avium complex. Serial images of 3-phase bone scans, gallium scan, and magnetic resonance imaging demonstrate the area of involvement...   "Cold" and "Hot" Osteomyelitis on Bone Scintigraphy - Clinical Nuclear Medicine Bone scanning is frequently used for the assessment of a child with pain around the hip joint. The authors present a child with septic hip arthritis in which a striking abnormality of complete absence of tracer uptake in an extensive region of the proximal femur was demonstrated on bone scintigraphy. Later during the course of his disease, markedly increased tracer uptake was seen along most of the femoral diaphysis with the exception of the avascular proximal bone. These scintigraphic findings represent extensive osteomyelitis of the femur with avascular necrosis of its proximal part... October 27, 2003   Diagnostic points and possible origin of osteomyelitis in synovitis, acne, pustulosis, hyperostosis and osteitis (SAPHO) syndrome: a radiographic study of 77 mandibular osteomyelitis cases - Rheumatology Conclusions: Radiographic examination is suggested to be convenient and a useful diagnostic method of differentiating osteomyelitis in SAPHO syndrome from suppurative osteomyelitis. The periosteum is suspected to be the original site of osteomyelitic lesions in SAPHO syndrome...

October 23, 2003   Quantitative Assessment of Diffusion Abnormalities in Benign and Malignant Vertebral Compression Fractures by Line Scan Diffusion-Weighted Imaging - American Journal of Roentgenology Conclusion: Although the quantitative assessment of vertebral diffusion provides additional information concerning compressed vertebrae, the benign and malignant compression fracture ADC values overlap considerably. Therefore, even a quantitative vertebral diffusion assessment may not always permit a clear distinction between benign and malignant compression fractures...   Comparison of High-Field-Strength Versus Low-Field-Strength MRI of the Shoulder - American Journal of Roentgenology Conclusion: High-field-strength MRI units provide better spatial and contrast resolution and allow more accurate interpretations than low-field-strength units; these findings may affect clinical treatment...   Complications of Rotator Cuff Surgery in Which Bioabsorbable Anchors Are Used - American Journal of Roentgenology Conclusion: MRI is useful in the assessment of patients with persistent or new-onset pain after supraspinatus tendon repair with rotator cuff anchors. MRI provides a presurgical map for second-look arthroscopy to assess retear of the supraspinatus tendon and also aids in retrieval of dislodged rotator cuff anchors...   MR Arthrography of Anterior Cruciate Ligament Reconstruction Grafts - American Journal of Roentgenology Conclusion: MR arthrography can accurately depict the presence of anterior cruciate ligament graft tears. Localized anterior arthrofibrosis and graft impingement were less accurately detected and showed greater observer variability...   Sacral Fractures: A Potential Pitfall of FDG Positron Emission Tomography - American Journal of Roentgenology Conclusion: Sacral fractures can show increased uptake of FDG on PET. Therefore, correlative cross-sectional imaging is necessary to avoid the erroneous diagnosis of sacral metastases on PET and prevent inappropriate treatment of patients...   MRI Features of Intersection Syndrome of the Forearm - American Journal of Roentgenology Conclusion: Peritendinous edema (peritendinitis) around the first and second extensor compartment tendons, extending proximally from the crossover point, is the most characteristic finding that should suggest a diagnosis of intersection syndrome. Chronic cases may be subtle and not show substantial MRI findings likely reflecting the development of a stenosing tenosynovitis... October 22, 2003   Shoulder girdle neoplasms mimicking frozen shoulder syndrome - Journal of Shoulder and Elbow Surgery Conclusion: In patients with discrete bony tenderness elicited by light tapping, a bone scan should be ordered and magnetic resonance imaging should be considered...   Measurement of glenoid version: Conventional radiographs versus computed tomography scans - Journal of Shoulder and Elbow Surgery Conclusion: Studies that assess the role of glenoid component orientation should use a reproducible method of assessment such as CT...

October 21, 2003   Endodontic measurement accuracy and perceived radiograph quality: Effects of film speed and density - Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics Conclusions: Underexposed radiographs are perceived as inferior to slightly overexposed radiographs for endodontic file length assessment regardless of the film speed used. Current Flow and Kodak E-speed and F-speed radiographs appear to be as accurate as other accepted radiographs used in determining endodontic working lengths. Image background density should be kept constant when making comparisons among x-ray films...   Fractal Analysis for Quantitative Evaluation of Diffuse Lung Abnormalities on Chest Radiographs: Use of Sub-ROIs - Journal of Thoracic Imaging Conclusion: From our results, the sub-ROIs whose matrix sizes were greater than or equal to 128 × 128 were suggested to be suitable for quantitative evaluation of diffuse lung abnormalities seen on chest radiographs... October 17, 2003   Assessment of Early Osteoarthritis in Hip Dysplasia with Delayed Gadolinium-Enhanced Magnetic Resonance Imaging of Cartilage - Journal of Bone and Joint Surgery Conclusions: We demonstrated that, in patients with hip dysplasia, the dGEMRIC index—a measure of the biochemical integrity of cartilage—correlates with pain and the severity of the dysplasia and is significantly different among groups of hips with mild, moderate, and severe dysplasia, suggesting that it may be a sensitive measure of early osteoarthritis. Additional studies are needed to determine whether dGEMRIC can be used to predict disease progression in different situations and/or demonstrate responses to therapeutic interventions... October 16, 2003   Effect of ultrasound on rabbit mandibular incisor formation and eruption after mandibular osteodistraction - American Journal of Orthodontics and Dentofacial Orthopedics Conclusion: Therapeutic ultrasound combined with distraction enhanced mandibular incisor growth and eruption...   Kyphosis Correction and Height Restoration Effects of Percutaneous Vertebroplasty - American Journal of Neuroradiology Conclusion: Vertebroplasty increases the height of the fractured vertebra and reduces the wedge and kyphosis angles. These effects are most remarkable in fractured vertebra containing gas...   Evaluation of root-end cavity preparation using ultrasonic retrotips - International Endodontic Journal Conclusions: In this laboratory study, the time required to prepare root-end cavities using KiS retrotips was the same as that using CT-5 retrotips, and longer than that using DC retrotips. There was no significant difference in the number of microcracks or dye penetration between the three kinds of retrotips...

October 15, 2003   Radiographic bone density around immediately loaded oral implants - Clinical Oral Implants Research Conclusion: The innovative aspect of this clinical study is to propose a new method to analyze the bone density, reducing the need for histological analysis from human biopsy...   Auxology Is a Valuable Instrument for the Clinical Diagnosis of SHOX Haploinsufficiency in School-Age Children with Unexplained Short Stature - Journal of Clinical Endocrinology and Metabolism Conclusion: Our observations suggest that it is rational to limit SHOX mutation screening to children with an extremities-trunk ratio less than 1.95 + 1/2 height (m) and to add a critical judgment of the hand radiography...   Case Report: Bilateral asymmetric hip dislocation: case report and literature review - Emergency Radiology Simultaneous anterior and posterior hip dislocation is an unusual injury. A unique case is presented, consisting of bilateral asymmetric hip dislocation with associated femoral head, femoral shaft, and acetabular fractures resulting from a motorcycle collision. The mechanisms of injury, management, role of imaging, and complications of this injury complex are discussed, with a review of the relevant literature...   Evaluation of occult cervical spine fractures on radiographs and CT - Emergency Radiology CT, especially high-quality CT reconstructions for odontoid and facet fractures, can improve the diagnosis of cervical spine fracture... October 14, 2003   A Preoperative Nomogram Identifying Decreased Risk of Positive Pelvic Lymph Nodes in Patients With Prostate Cancer - Journal of Urology Conclusions: Using clinical information, we produced 2 calibrated and validated nomograms, which accurately predict pathologically negative lymph nodes in men with localized prostate cancer who are candidates for radical prostatectomy ...   Quantitative ultrasonography and magnetic resonance imaging of the parotid gland: can they replace the histopathologic studies in patients with Sjogren's syndrome? - Joint, Bone, Spine US and MRI are equally sensitive tools for the diagnosis of salivary involvement in patients with SS. Quantitative assessment of US and MRI images seem to represent an advance in the diagnosis of SS as they offer a good prediction of the pathology score of the salivary gland. MRI seems unnecessary as a routine diagnostic tool and should be considered as the second option in case of normal US...   Evaluation of metacarpophalangeal joint synovitis in rheumatoid arthritis by power Doppler technique: relationship between synovial vascularization and periarticular bone mineral density - Joint, Bone, Spine Power Doppler ultrasonography (PDUS) is a useful method demonstrating synovial vascularization and flow patterns and offers new alternatives for monitoring disease activity and measurement of therapeutic response. Flow patterns had intimate correlation with intra-articular bone and cartilage destruction...   Bone Mineral Density Measurement and Treatment for Osteoporosis in Older Individuals With Fractures: A Gap in Evidence-Based Practice Guideline Implementation - Archives of Internal Medicine Conclusion: Evaluation and treatment rates for osteoporosis in older individuals with fractures fall far below national recommendations, especially for men. Intervention strategies should be developed and evaluated to prevent refracture in older individuals with fractures...

October 13, 2003   Case Report: Locked knee caused by meniscal subluxation: Magnetic resonance imaging and arthroscopic verification - Arthroscopy Conclusion: On repeat arthroscopy, the posterior horn of the lateral meniscus was hypermobile and could be displaced into the notch and did not show a frank tear. The meniscus was repaired to the capsule with sutures. At the 2-year follow-up evaluation, the patient had no complaints and no clinical signs of locking... October 10, 2003   Magnetic Resonance Imaging Assessment of Positional Relationship Between the Disk and Condyle in Asymptomatic Young Adult Mandibular Prognathism - Angle Orthodontist Conclusion: A positive correlation was found between the left disk position and the vertical skeletal morphology because of the differentiation of the condylar head angle in each side. As a result, clinically asymptomatic Class III patients may be candidates for TMJ derangements. For this reason, clinical and visual examinations should be performed simultaneously to eliminate diagnostic errors before orthognathic treatment... October 08, 2003   Use of best imaging options maximizes readability - Diagnostic Imaging The practical nature of running a musculoskeletal imaging practice limits the amount of scan time to 30 or at most 60 minutes. There's a constant trade-off, therefore, between the speed of imaging and the appearance of the images...   Musculoskeletal ultrasound muscles into MRI territory - Diagnostic Imaging Mike is an aging weekend warrior who plays various sports as if he were in the major leagues. Like many athletes, he lives with intermittent low-level chronic pain, considering it an acceptable price for competitive glory. But the pain eventually begins to impinge on his athleticism, and he seeks counsel from Dr. John McShane, a sports medicine physician in the Philadelphia suburbs. Like many professional and amateur athletes, Mike immediately rules out surgery as an option...   Improving the Standard - Orthopedic Technology Review Conclusion: Radio-frequency ablation and coagulation (RFAC)-assisted microdisc decompression offers a minimally invasive solution for relief of herniated discs...

October 06, 2003     Special issue on Musculoskeletal Radiology - Canadian Association of Radiologists Journal Musculoskeletal imaging, like many subspecialties in radiol-ogy, is on fire. It was not that long ago that imaging of this body system was limited to plain films, with cartilage, tendons, ligaments, muscles and supporting tissues all but invisible...   Magnetic resonance imaging of bone tumours and mimics: pictorial essay - Canadian Association of Radiologists Journal MRI plays several roles in the evaluation of known or suspected bone tumours. Radiologists should carry out MRI with a view to staging primary bone sarcomas. Image-guided biopsy of a possible sarcoma should not be performed without prior consultation with an orthopedic oncologist, to avoid microscopic tumour contamination of tissues outside of the surgical bed. Familiarity with the characteristic MRI appearances of common tumours and tumour-like conditions facilitates accurate lesion diagnosis and plays an important role in determining patient management...     Case Report: Case of the month #94 - Canadian Association of Radiologists Journal A 21-year-old, male, varsity-level athlete presented to his physician with persistent left lower leg swelling. Over 1 year previous, he suffered a clinically diagnosed severe left ankle sprain. Focal swelling in the posterior as-pect of the lower leg persisted, and the patient was referred for imaging of this ?mass? ...   The association of cartilage volume with knee pain - Osteoarthritis and Cartilage Conclusion: This study suggests that alterations in patella volume are associated with pain, function and global scores of the WOMAC. In participants with more knee pain, there was an association with severity of patella cartilage reduction. Other MRI cartilage volume features were not strongly associated with WOMAC sub-scores...     Case Report: Case of the month #93 - Canadian Association of Radiologists Journal An 18-year-old male army recruit collapsed in the final stretch of a 5-km race in the mid-afternoon sun. He was rushed to the emergency department, where he complained of heaviness in his legs and pain in the buttocks. He had an unremarkable medical and family history ... October 03, 2003   Bilateral asymmetric hip dislocation: case report and literature review - Emergency Radiology Simultaneous anterior and posterior hip dislocation is an unusual injury. A unique case is presented, consisting of bilateral asymmetric hip dislocation with associated femoral head, femoral shaft, and acetabular fractures resulting from a motorcycle collision. The mechanisms of injury, management, role of imaging, and complications of this injury complex are discussed, with a review of the relevant literature... October 02, 2003   Sickle-cell anemia with unusual bone changes - Journal of Pediatrics Conclusion: Careful prospective study of risk factors, intervention strategies, and long-term outcome represents the next step towards the goal of improving the lives of all children with sickle cell disease...   The association of cartilage volume with knee pain - Osteoarthritis and Cartilage This study suggests that alterations in patella volume are associated with pain, function and global scores of the WOMAC. In participants with more knee pain, there was an association with severity of patella cartilage reduction. Other MRI cartilage volume features were not strongly associated with WOMAC sub-scores...   Evaluation of occult cervical spine fractures on radiographs and CT - Emergency Radiology The aim of this study was to evaluate occult cervical spine fractures on radiographs and CT. We reviewed radiographs of 68 patients with cervical spine fractures at a level 1 trauma center. Twenty-six patients showed occult fractures on initial radiographs...

October 01, 2003   Osseous Invasion by Soft-Tissue Sarcoma: Assessment with MR Imaging - Radiology On T1- and T2-weighted MR images, findings of cortical and medullary signal intensity change and cortical destruction were sensitive and specific for detection of osseous invasion by soft-tissue sarcoma...   MR Arthrography of Postoperative Knee: For Which Patients Is It Useful? - Radiology All patients with meniscal repair required MR arthrography. All patients with meniscal resection of more than 25%, who did not have severe degenerative arthrosis, chondral injuries, or avascular necrosis required MR arthrography. Patients with less than 25% meniscal resection did not need MR arthrography...   Diffusion-weighted MR Imaging with Apparent Diffusion Coefficient and Apparent Diffusion Tensor Maps in Cervical Spondylotic Myelopathy - Radiology Diffusion weighting improved the sensitivity of imaging in cervical spondylotic myelopathy...   Effects of Estrogen Plus Progestin on Risk of Fracture and Bone Mineral Density: The Women's Health Initiative Randomized Trial - JAMA Conclusion: This study demonstrates that estrogen plus progestin increases BMD and reduces the risk of fracture in healthy postmenopausal women. The decreased risk of fracture attributed to estrogen plus progestin appeared to be present in all subgroups of women examined. When considering the effects of hormone therapy on other important disease outcomes in a global model, there was no net benefit, even in women considered to be at high risk of fracture...   In Vivo Proton MR Three-dimensional T1 Mapping of Human Articular Cartilage: Initial Experience - Radiology Conclusion: There was good correlation between two-dimensional and three-dimensional T1p values for the six healthy subjects (R2 = 0.88, slope = 1.16) ...   Osteoid Osteoma: Percutaneous Treatment with Radiofrequency Energy - Radiology Conclusion: CT-guided percutaneous RF ablation of osteoid osteoma is a safe and effective technique