Febuary 2005 News Headlines

These are radiology news updates from other sites

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

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February 25, 2005   MRI of Medial Malleolar Bursa - American Journal of Roentgenology Conclusion: The MRI findings of medial perimalleolar fat in asymptomatic individuals and in patients with suspected medial malleolar bursa include normal fat, minimal or extensive subcutaneous edema, and a fluid-filled sac. The latter pattern is consistent with the MR appearance of the medial malleolar bursa... February 24, 2005   Acquired pseudarthrosis of the radius and ulna in a neurofibromatosis patient with radiographic normal bone: A case report - Journal of Hand Surgery Pseudarthrosis, often associated with neurofibromatosis, usually is present at birth or is the result of pathologic fracture. We present a rare case of a 29-month-old patient with acquired pseudarthrosis in radiographically normal bone...   Fractures in children - Immaging Fractures in children differ from those in adults. Children's bones are more plastic and absorb more energy before breaking. Often fractures in children do not involve complete separation of the bone into two fragments. Incomplete fractures are common, and several fracture types occur that are not seen in adults. The immature skeleton contains multiple growth plates, which may be involved in fractures in a variety of patterns unique to children. Normal growth variants may mimic injury... February 23, 2005   Preoperative MRI Analysis of Patients With Idiopathic Scoliosis: A Prospective Study - Spine Conclusions: Foramen magnum decompression for neural axis malformations could prevent permanent neurologic complications during scoliosis surgery. There is little risk of neurologic complications in patients with "idiopathic" scoliosis whose neurologic status is normal, even if these patients have a neural axis malformation on MRI...

February 22, 2005   Optimal sampling of MRI slices for the assessment of knee cartilage volume for cross-sectional and longitudinal studies - BMC Musculoskeletal Disorders Conclusion: Sampling alternate 1.5 mm thick MRI slices is sufficient for knee cartilage volume measurement in cross-sectional and longitudinal epidemiological studies with little increase in measurement error. This approach will lead to a substantial decrease in post-scan processing time... February 18, 2005   Interobserver variation in sonography of the painful shoulder - Journal of Clinical Ultrasound Conclusions: In experienced hands sonography of the rotator cuff is a reproducible diagnostic test, but agreement is poor when there is marked disparity between the operators' experience levels. Our findings suggest a need for a more clearly defined training curriculum for sonography of the shoulder in radiology training programs...   Spontaneous wrist fusion: An unusual complication of Kienbock's disease - Journal of Hand Surgery We report a case of spontaneous wrist fusion occurring in a patient with magnetic resonance image (MRI)-proven stage 1 Kienbock's disease. The purpose of this case report is to make hand surgeons aware of this potential finding and to alert hand surgeons and radiologists that diffuse MRI changes of the lunate may not necessarily be pathognomonic for Kienbock's disease...   Bone infection in patients suspected of complicating osteomyelitis: the diagnostic value of dual isotope bone-granulocyte scintigraphy - Clinical Physiology and Functional Imaging The purpose of this study was to evaluate the diagnostic value of dual isotope bone-granulocyte scintigraphy in patients with known bone pathology clinically suspected of osteomyelitis, i.e. complicating osteomyelitis, using per-operative bacterial culture from bone as reference...Conclusion: Simultaneous bone-granulocyte scintigraphy is a valuable diagnostic tool in diagnosing osteomyelitis complicating other bone pathology with or without soft-tissue infection... February 17, 2005   Predicting articular erosion in hallux valgus: Clinical, radiographic, and intraoperative analysis - The Journal of Foot and Ankle Surgery Therefore, preoperative clinical parameters (ie, age) and radiographic measurements (ie, intermetatarsal angle 1-2, hallux abductus angle, tibial sesamoid position, and proximal articular set angle) can directly define the incidence and location of articular erosion and are helpful in the preoperative assessment of the hallux valgus deformity. In addition, nearly every first metatarsophalangeal joint evaluated had some degree of articular erosion and, in certain circumstances (ie, advanced age and increased proximal articular set angle), it was universal and extensive...   The Role of Whole-Body Bone Scanning and Clinical Factors in Detecting Bone Metastases in Patients With Non-small Cell Lung Cancer - Chest Conclusions: In spite of the high NPV of the bone-specific clinical factors and the high value obtained in the false-positive findings in the bone scan, the present study indicates that in patients for whom surgical therapy is an option, preoperative staging using WBBS can be helpful to avoid misstaging due to asymptomatic bone metastases...

February 16, 2005   Three-dimensional Tomography of Relapsed Infantile Blount's Disease - Clinical Orthopedics and Related Research Three-dimensional computed tomography reconstructions were done in the preoperative workup of five patients receiving Ilizarov correction for relapsed infantile Blount's disease. There were four girls and one boy with a mean age of 9 years 11 months. In all patients, the computed tomography reconstruction images made assessment of the deformity easier and revealed abnormalities not readily seen on plain radiographs... February 15, 2005   Radiographic Comparison of Two Glenoid Preparation Techniques in Total Shoulder Arthroplasty - Clinical Orthopedics and Related Research We compared the prevalence of periglenoid radiolucencies between two glenoid component preparation techniques used in total shoulder arthroplasties. Seventy-two consecutive patients with primary osteoarthritis had total shoulder arthroplasties using one prosthetic system with flat-back keeled polyethylene glenoid components. Thirty-seven shoulders had glenoid implants that were cemented after standard curettage preparation of the keel slot... February 14, 2005   Comparison of MRI and Conventional Radiography for Assessment of Acromial Shape - American Journal of Roentgenology Conclusions: For determination of acromial shape, outlet view radiographs are superior to any single MRI slice position, but inferior to a combination of two MRI slices (S-1 and S-2). If a single MRI slice is being used, the slice position just lateral to the acromioclavicular joint is recommended...   Reliability of magnetic resonance imaging of the traumatic knee as determined by arthroscopy - New Zealand Medical Journal Magnetic resonance imaging (MRI) has become an important modality in the assessment of traumatic soft-tissue injury of the knee. This prospective study was performed to evaluate the accuracy of MRI used at Wellington Hospital¿by comparing the result of the scans of 67 patients with subsequent arthroscopy...   Intraosseous Venography with Carbon Dioxide Contrast Agent in Percutaneous Vertebroplasty - American Journal of Roentgenology Conclusions: Intraosseous venography with CO2 contrast agent was slightly inferior to iodine venography in terms of its ability to visualize the vertebral bodies and perivertebral veins, but it remains a useful technique because no interference with optimal visualization of bone cement occurs during the cement injection when CO2 remains within the fracture cleft...

February 11, 2005   The delayed diagnosis of radial head fractures - European Journal of Emergency Medicine Radial head fractures are a common orthopaedic injury presenting to Emergency Departments. Most are diagnosed radiographically, either with a visible fracture or by the presence of abnormal fat pads. We present two cases of delayed radiological diagnosis of radial head fractures despite a high index of clinical suspicion of a fracture at initial consultation...   Magnetic resonance imaging of growth cartilage in children - Applied Radiology Magnetic resonance imaging (MRI) is an important modality for assessing growth cartilage, which includes the physis and cartilaginous epiphysis of developing long bones in the pediatric skeleton. An understanding of normal bone development and the unique pathologies that affect growing bone is necessary to accurately interpret MRI of the musculoskeletal system in children... February 10, 2005   Measurement of cartilage volumes in rheumatoid arthritis using MRI - British Journal of Radiology MRI is a valuable imaging modality for assessment of the articular cartilage in rheumatoid arthritis (RA) and is potentially of use in monitoring disease progression and response to therapy. In this study, we investigated the sources of error in volume measurements obtained by segmentation of MR images of knee cartilage in patients with RA and followed cartilage volume in a group of RA patients for 12 months...   Recommendations for musculoskeletal ultrasonography by rheumatologists: Setting global standards for best practice by expert consensus - Arthritis Care and Research Conclusion: We have produced the first expert-derived, interdisciplinary consensus of recommendations for rheumatologists performing MUS. This represents a significant advance that will not only direct future rheumatology MUS practice, but will facilitate informed educational development. This is an important step towards the introduction of a specific training curriculum and assessment process to ensure competent rheumatologist ultrasonographers...   False negative 16 detector multislice CT for scaphoid fracture - British Journal of Radiology We discuss a case of a 19-year-old man with scaphoid trauma. We describe the imaging findings on three sets of radiographs, bone scintigraphy, CT and MRI. CT failed to identify a scaphoid fracture, which was present on 6 week radiographs, MRI and scintigraphy. The case illustrates that despite multidetector technology, CT still relies upon cortical and or trabecular displacement to demonstrate fractures...

February 09, 2005   Absence of Increased Tc-99m Polyclonal Human Immunoglobulin (HIG) Joint Uptake in a Patient With Systemic Lupus Erythematosus Presenting With Polyarticular Joint Complaints - Clinical Nuclear Medicine Several studies have shown that Tc-99m HIG (polyclonal human immunoglobulin) scintigraphy allows for identification of inflamed joints. However, no data are available in patients with systemic lupus erythematosus (SLE). A patient with a definite diagnosis of SLE presented with symmetric polyarticular complaints and was injected with 550 MBq (14.8 mCi) of Tc-99m labeled HIG...   PET Imaging With F-18 Fluorodeoxyglucose for Primary Lymphoma of Bone - Clinical Nuclear Medicine Assessment of the response to therapy in patients with lymphoma involving bone can be difficult. In this patient, who demonstrated complete remission, the regions of fluorine-18 fluorodeoxyglucose (F-18 FDG) PET uptake diminished more rapidly after therapy, indicating a complete response at a much earlier stage than did magnetic resonance imaging (MRI)-based findings. With the MRI and computed tomography findings, it was difficult to assess whether the residual tumor tissue was viable... February 07, 2005   Dose implications of fluoroscopy-guided positioning (FGP) for lumbar spine examinations prior to acquiring plain film radiographs - British Journal of Radiology Fluoroscopy is increasingly being used as a positioning device prior to obtaining plain film radiographs. This is particularly true for those examinations where the type of projection and habitus of the patient present difficulties. An example is the examination of the lumbar spine; especially the L5/S1 projection. The purpose of this study was to determine the effect of fluoroscopy-guided positioning (FGP) on patient dose...

February 04, 2005   Radiological findings of primary retroperitoneal synovial sarcoma - British Journal of Radiology Synovial sarcomas are most commonly localized in the extremities, especially the lower thigh and knee areas. Retroperitoneal synovial sarcoma is very rare. We describe the radiological and pathological findings of an adult retroperitoneal synovial sarcoma... February 03, 2005   Imaging of Bone Erosion in Rheumatoid Arthritis - Seminars in Musculoskeletal Radiology Rheumatoid arthritis (RA) is the most common type of inflammatory arthritis, with a prevalence of 1% in the United States. Recently introduced disease-modifying antirheumatic drugs have been extremely successful in preventing irreversible joint damage, particularly if initiated early. Accordingly, accurate and early diagnosis of RA has become imperative...   Indium-111 Ibritumomab Demonstration of Extremity Involvement in Transformed B-Cell Non-Hodgkin Lymphoma - Clinical Nuclear Medicine Yttrium-90 ibritumomab is a recent option in the therapeutic armamentarium for follicular, indolent, or transformed malignant non-Hodgkin lymphoma. Its administration depends on the normal biodistribution of indium-111 ibritumomab on whole-body scintigraphy. Although tumor assessment with an indium-111-labeled monoclonal antibody is not an absolute necessity, biodistribution imaging may show extranodal soft tissue involvement of non-Hodgkin lymphoma... February 02, 2005   A Novel Rabbit Model of Mild, Reproducible Disc Degeneration by an Anulus Needle Puncture: Correlation Between the Degree of Disc Injury and Radiological and Histological Appearances of Disc Degeneration - Spine Conclusions: The needle puncture approach, using 16G to 21G needles, resulted in a reproducible decrease of disc height and magnetic resonance imaging grade. The ease of the procedure and transfer of the methodology will benefit researchers studying disc degeneration... February 01, 2005   Cancellous bone differences between knees with early, definite and advanced joint space loss; a comparative quantitative macroradiographic study - Osteoarthritis and Cartilage Conclusion: The increase in FSA (consistent with increased trabecular number associated with thinning and fenestration in regions of dense cancellous bone) of most vertical and some horizontal trabeculae confirms that cancellous bone within the proximal tibia of OA patients is osteoporotic...