July 04 News Headlines

These are radiology news updates from other sites

Date this page was last updated: 01/07/2007 03:02:50 PM

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July 30, 2004   A new magnetic resonance imaging scoring method for assessment of haemophilic arthropathy - Haemophilia In a European multicentre study, 39 ankles in 28 haemophilic boys were investigated by magnetic resonance imaging (MRI). A new MRI score was developed in the format A(e:s:h) for evaluating haemophilic arthropathy. This scheme provides high resolution and allows separation of different pathological components. The factor A is calculated as the sum of scores for subchondral cysts (maximum value 6), irregularity/erosion of subchondral cortex (maximum 4) and chondral destruction (maximum 6); e, s and h, respectively, represent effusion/haemarthrosis, synovial hypertrophy and haemosiderin deposition, and they are separately evaluated on a scale of 0-4... July 26, 2004   Development of a compact MRI system for trabecular bone volume fraction measurements - Magnetic Resonance in Medicine A compact MRI system for measuring trabecular bone volume fraction (TBVF) of the calcaneus was developed with the use of a 0.21 T permanent magnet and portable MRI console. The entire system weighed < 600 kg and was installed in a 2 m × 2 m space. Two cross-sectional spin-echo images of a heel acquired with external reference phantoms (total measurement time = 5 min) were used to quantify the TBVF of the calcaneus... July 23, 2004   Unilateral lumbosacral facet joint dislocation without associated fracture - Australasian Radiology In the lumbosacral spine, unilateral facet joint dislocation is an infrequent injury, which is often associated with fractures at the involved or other lumbar levels. The rare occurrence of unilateral lumbosacral facet joint dislocation without any associated fractures is presented with CT and MRI, and surgical correlation...

July 22, 2004   Delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) and T2 characteristics of human knee articular cartilage: Topographical variation and relationships to mechanical properties - Magnetic Resonance in Medicine The macromolecular structure and mechanical properties of articular cartilage are interrelated and known to vary topographically in the human knee joint. To investigate the potential of delayed gadolinium-enhanced MRI of cartilage (dGEMRIC), T1, and T2 mapping to elucidate these differences, full-thickness cartilage disks were prepared from six anatomical locations in nonarthritic human knee joints ... July 21, 2004   Imaging Appearances of Lateral Ankle Ligament Reconstruction - Radiographics Six patients were retrospectively identified as having undergone lateral ligament reconstruction surgery. The surgical procedures were categorized into four groups: direct lateral ligament repair, peroneus brevis tendon rerouting, peroneus brevis tendon loop, and peroneus brevis tendon split and rerouting. At radiography and magnetic resonance (MR) imaging, the presence of one or more suture anchors in the region of the anterior talofibular ligament indicates direct ligament repair, whereas a fibular tunnel indicates peroneus brevis tendon rerouting or loop...

July 20, 2004   Bone Imaging in Metastatic Breast Cancer - Journal of Clinical Oncology Bone is the most common site to which breast cancer metastasizes. Imaging—by skeletal scintigraphy, plain radiography, computed tomography, or magnetic resonance imaging—is an essential part, and positron emission tomography or single-photon emission computed tomography have a potential of evaluating bone metastases, but no consensus exists as to the best modality for diagnosing the lesion and for assessing its response to treatment. Imaging bone metastases is problematic because the lesions can be osteolytic, osteoblastic, or mixed, and imaging modalities are based on either direct anatomic visualization of the bone or tumor or indirect measurements of bone or tumor metabolism...   Imaging Findings in Musculoskeletal Complications of AIDS - Radiographics Patients with human immunodeficiency virus (HIV) infection and acquired immunodeficiency syndrome (AIDS) are susceptible to a variety of complications that can affect the musculoskeletal system. These complications can be infectious, inflammatory, or neoplastic or can take some other form. Infection (cellulitis, necrotizing fasciitis, soft-tissue abscess, pyomyositis, osteomyelitis, septic arthritis) is the most common complication... July 19, 2004   Bipartite parietal bone: A rare cause of plagiocephaly - Australasian Radiology A case of an infant with an asymmetrical head is presented. On clinical assessment the patient displayed features of deformational plagiocephaly. With the aid of three-dimensional CT imaging of the skull, a bipartite parietal bone was diagnosed. The prevalence and possible aetiology of a bipartite parietal bone is discussed as well as a brief overview of the common causes of plagiocephaly... July 15, 2004   Nationwide Evaluation of X-ray Trends Survey of Abdomen and Lumbosacral Spine Radiography - Radiology Results of the 1995 Nationwide Evaluation of X-ray Trends (NEXT) survey of facilities that perform diagnostic radiographic examinations of the abdomen and lumbosacral spine were compared with those of previous NEXT surveys conducted in 1987 and 1989. A clinically validated radiographic phantom was used in the 1995 survey to capture data about radiation exposure and image quality...

July 14, 2004   Aneurysmal bone cyst of the temporal bone - Australasian Radiology Aneurysmal bone cyst (ABC) of the temporal bone is rare. The nature of the underlying disorder that converted into the ABC might, however, be difficult to ascertain on imaging as well as on histopathology. The unusual CT and MRI findings in a case of ABC of the temporal bone are presented. This had transdural intracerebral spread with a large component of solid enhancing matrix but no peripheral calcific rim. The patient was an adult of 45 years with a history of headache for more than 1 year...   Complications of occipital bone pneumatization - Australasian Radiology Four cases of occipital bone pneumatization and subsequent complications are described, which include a pathological fracture of C1 and the occipital bone, spontaneous subcutaneous emphysema and pneumatocele formation. Reviews of the published literature and possible aetiological factors have been discussed... July 13, 2004   Imaging of the symptomatic type II accessory navicular bone - Australasian Radiology Accessory ossicles of the foot are commonly mistaken for fractures. The accessory navicular is one of the most common accessory ossicles of the foot. There is a higher incidence in women and the finding might be bilateral in 5090%. This entity is usually asymptomatic, although populations with medial foot pain have a higher prevalence. Three types of accessory navicular bone have been described... July 12, 2004   Field gradient CPMG applied on postmortem muscles - Magnetic Resonance Imaging As a new approach, Carr-Purcell-Meiboom-Gill (CPMG) experiments were performed in vitro on porcine muscles (n = 10) during the period from 15 min to 85 min postmortem and again at 24 h postmortem in the absence (G = 0) and the presence of an external field gradient (G = 0.5*10-3 T/m), which was applied throughout the CPMG sequence. The experiments were performed on low-field nuclear magnetic resonance (NMR) equipment...

July 02, 2004   Carpal Tunnel Syndrome: Diagnostic Usefulness of Sonography - Radiology Conclusion: Sonography is comparable to electrodiagnostic study in diagnosis of CTS and should be considered as initial test of choice for patients suspected of having CTS