April 03 News Headlines

These are radiology news updates from other sites

Date this page was last updated: 01/07/2007 03:02:40 PM

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April 30, 2003   Computer-based periaxial rotation measurement for aligning fractured femur fragments from CT: A feasibility study - Computer Aided Surgery Conclusion: In a feasibility study, the method was applied to five dry femurs and one patient data set, and simulated a reduction based on the periaxial measurements with satisfactory results. The experiments showed the measured angle on the fractured femur to be within 1-4.5° of that of the healthy bone...   Three-dimensional image registration of phantom vertebrae for image-guided surgery: A preliminary study - Computer Aided Surgery Conclusion: A rigid, surface-based registration of CT images to phantom spinal US images, acquired with a free-hand, tracked transducer, is achievable with a limited, easily obtainable portion of the vertebral surface...

April 29, 2003   Cartilage lesions in the ankle joint: comparison of MR arthrography and CT arthrography - Skeletal Radiology Conclusion: CT arthrography appears to be more reliable than MR arthrography for the detection of cartilage lesions in the ankle joint...   Bucket-handle meniscal tears of the knee: sensitivity and specificity of MRI signs - Skeletal Radiology Conclusions: Bucket-handle tears of the menisci, reported in about 10% of most large series, have been described by several signs with MRI. This report gives the sensitivity and specificity of MRI for bucket-handle tears using each of these signs independently and in combination. MRI is shown to be very accurate for diagnosing bucket-handle tears when two or more of these signs coexist...   Synovial osteochondromatosis in hereditary arthro-ophthalmopathy (Wagner-Stickler syndrome) - Skeletal Radiology Synovial manifestations of skeletal dysplasias have to our knowledge not been described previously but we suggest that synovial osteochondromatosis can be the manifestation of an underlying skeletal dysplasia... April 28, 2003   Complementary use of radiological skeletal survey and bone scintigraphy in detection of bony injuries in suspected child abuse - Archives of Diseases in Childhood Conclusion: Skeletal survey and bone scintigraphy are complementary studies in the evaluation of non-accidental injury, and should both be performed in cases of suspected child abuse...

April 23, 2003   A comparison of ultrasonography and magnetic resonance imaging in the evaluation of temporomandibular joint involvement in rheumatoid arthritis and psoriatic arthritis - Rheumatology Conclusion: US imaging appears able to detect different pathological changes of the TMJ and may be considered an important diagnostic tool for clinical evaluation of the TMJ in RA and PsA...   Radiological assessment of haemophilic arthropathy with emphasis on MRI findings - Haemophilia In this paper, an MRI scoring system is presented along with examples of joint effusion, haemarthrosis, synovial hypertrophy, haemosiderin deposition, erosions, cysts and cartilage loss. MRI is a powerful tool in the diagnosis, staging and treatment of patients with haemophilic joint disease...

April 22, 2003   Radiographic tools for assessment of pathologic cartilage calcification - Current Opinion in Rheumatology Conclusion: A working knowledge of the typical locations of cartilage calcific deposits as well as their appearance on various imaging modalities is necessary for accurate diagnosis... April 21, 2003   Percutaneous Vertebroplasty:Treatment of Painful Vertebral Compression Fractures with Intraosseous Vacuum Phenomena - American Journal of Roentgenology Percutaneous vertebroplasty is effective in the treatment of patients with painful vertebral compression fractures with intraosseous vacuum phenomena...   Prevalence and Size of Meniscal Cysts, Ganglionic Cysts, Synovial Cysts of the Popliteal Space, Fluid-Filled Bursae, and Other Fluid Collections in Asymptomatic Knees on MR Imaging - American Journal of Roentgenology Meniscal cysts may be present in asymptomatic knees, at least on the medial side. Synovial cysts of the popliteal space can be found in approximately one fifth of asymptomatic knees. Their maximal diameter is usually smaller than 30 mm...   Sonography of Polyethylene Liners Used in Total Knee Arthroplasty - American Journal of Roentgenology We found that the polyethylene liner used in total knee arthroplasty can be clearly identified during sonographic evaluation of the knee. We also found a high correlation between the longitudinal measurement of the polyethylene liner with the thickness of the radiolucent polyethylene as measured on conventional radiographs. We propose that sonography could potentially be a useful noninvasive imaging modality to screen for subtle cases of polyethylene wear...   Iliopsoas Impingement on the Acetabular Component: Radiologic and Computed Tomography Findings of a Rare Hip Prosthesis Complication in Eight Cases - Journal of Computer Assisted Tomography Conclusion: More than a 12-mm overhang of the acetabular cup is a sensitive and specific parameter for diagnosing IPI ...   Subchondral Insufficiency Fracture of the Femoral Head: Magnetic Resonance Imaging Findings Correlated With Micro-Computed Tomography and Histopathology - Journal of Computer Assisted Tomography We described magnetic resonance (MR) imaging findings of subchondral insufficiency fracture of the femoral head without collapse in which micro-computed tomography (CT) and histopathologic studies were performed...   Carbon-11 Choline Positron Emission Tomography in Musculoskeletal Tumors: Comparison With Fluorine-18 Fluorodeoxyglucose Positron Emission Tomography - Journal of Computer Assisted Tomography Conclusion: Choline PET analysis may not be inferior to FDG PET analysis for differentiating malignant from benign musculoskeletal tumors. The advantages of choline PET were shorter examination time and little retention in the bladder; therefore, this modality may be useful for preoperative planning for musculoskeletal tumors, especially for lesions around the hip joints ...   Three-dimensional CT Imaging of Flexor Tendon Ruptures in the Hand and Wrist - Journal of Computer Assisted Tomography Conclusions: 3D CT imaging can be useful when the diagnosis of flexor tendon rupture cannot be made based on trauma history and clinical examinations, and can be helpful in surgical planning ...   Dimensions of the lumbar intervertebral foramina as determined from the sagittal plane magnetic resonance imaging scans of 95 normal subjects - Journal of Manipulative and Physiological Therapeutics Conclusion: Measurements taken from MRI scans of IVFs were performed reliably. The morphometric database and IVF relationships should aid clinicians and researchers in evaluating patients with suspected foraminal stenosis and help further investigate IVF pathology and treatment of such pathology...

April 15, 2003   Thoracolumbar fracture with listhesis—an uncommon manifestation of child abuse - Pediatric Radiology Conclusion: Radiographic findings of FL of the thoracolumbar spine may be subtle and may be erroneously interpreted as due to a congenital or neoplastic cause. While other signs of child abuse should be sought, spinal injury may be the sole sign of abuse. Recognition of this entity is important to pursue the diagnosis of abuse...   An unusual form of congenital anterolateral tibial angulation—the delta tibia - Pediatric Radiology Conclusion: We report three infants with a poorly known form of congenital anterolateral angulation of the tibia with distinctive features seen on lateral roentgenograms...   Imaging of benign and malignant soft tissue masses of the foot - European Radiology The foot is a relatively uncommon site of neoplastic and non-neoplastic soft tissue tumors. Although it contains a relatively small amount of somatic soft tissue elements, the foot is considerably rich in tendons, fasciae, retinaculae, and synovium...   Abnormalities in the Cerebral Arterial System in Osteogenesis Imperfecta - American Journal of Neuroradiology Conclusion: After a literature review, these findings were interpreted as vasculopathic changes secondary to vascular fragility caused by the collagen abnormality in OI...

April 10, 2003   Imaging of sacroiliitis in early seronegative spondylarthropathy: Assessment of abnormalities by MR in comparison with radiography and CT - Acta Radiologica Conclusion: MR of the SIJs is reliable in its visualization of joint erosions in early SpA and allows differentiation between active and chronic sacroiliitis. We recommend the following sequences: semicoronal T1 and both semicoronal and semiaxial STIR. If these images are normal, the examination can be finished; otherwise additional semicoronal T1 FS before and after i.v. contrast has to be performed as well as semiaxial post-contrast T1 FS... April 09, 2003   A study and optimization of lumbar spine X-ray imaging systems - British Journal of Radiology This paper focuses on the application of the program to lumbar spine anteroposterior and lateral screen–film examinations... April 08, 2003   Better ergonomics drives new ultrasound configurations - Diagnostic Imaging When diagnostic ultrasound entered the radiological mainstream, the systems' ergonomics was an afterthought, if it was considered at all. Poorly designed equipment often caused chronic shoulder, wrist, and neck injuries in sonographers, according to Joan Baker, a healthcare consultant and partner in the firm Sound Ergonomics ...

April 04, 2003   Osteochondral lesions of the talus: A new magnetic resonance grading system with arthroscopic correlation - Arthroscopy Conclusions: This study shows that MRI can be used to evaluate the articular cartilage covering osteochondral lesions of the talus with a high degree of accuracy and thus may aid in identifying patients who would benefit from definitive arthroscopic treatment...   Tomographic study of the arthroscopic approaches to the hip joint - Arthroscopy Conclusions: The results of the present work suggest that surgical tools needed for arthroscopy of the hip should be more than 16 cm long to guarantee performing hip arthroscopy comfortably in more that 95% of the population...   April 02, 2003     Review: DXA scanning to diagnose osteoporosis - Do you know what the results mean? - Cleveland Clinic Journal of Medicine Dual-energy x-ray absorptiometry (DXA) provides useful information about osteoporosis and fracture risk that, combined with other risk factors for osteoporosis, helps guide therapy. However, DXA is operator-dependent, making it imperative to refer patients to sites where the operators are experienced in this technology...

April 01, 2003   Dynamic US of the Anterior Band of the Ulnar Collateral Ligament of the Elbow in Asymptomatic Major League Baseball Pitchers - Radiology Conclusion: Dynamic US provides a rapid means for evaluating the anterior band of the UCL in professional baseball pitchers. In pitching arms, this band is thicker, is more likely to have hypoechoic foci and/or calcifications, and demonstrates more laxity with valgus stress...   Injury of the Tibiofibular Syndesmosis: Value of MR Imaging for Diagnosis - Radiology Conclusion: MR imaging with use of both criteria is highly accurate for the diagnosis of tibiofibular syndesmotic disruption...   Skeletal muscle metabolism in Duchenne muscular dystrophy (DMD): an in-vitro proton NMR spectroscopy study - Magnetic Resonance Imaging The decrease in the concentration of acetate may reflect reduced transport of fatty acids into mitochondria due to decreased concentration of carnitine in DMD patients. Kreb's cycle intermediate alpha-ketoglutarate was observed only in the diseased muscle, which is suggestive of predominant oxidative metabolism for energy generation...