Baudouin Maldague

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A gas-density cleft within a transverse separation of the vertebral body, appearing in extension and disappearing in flexion, was observed in 10 cases of vertebral collapse at the thoraco-lumbar junction. The patients were 55 to 83 years old (mean, 68) and 7 of them were on chronic corticosteroid therapy. Such an intravertebral cleft has not been found by(More)
OBJECTIVE The purpose of this study was to determine the MR imaging features that enable differentiation between early irreversible osteonecrosis and transient lesions in nontraumatic lesions of the femoral condyle having the "bone marrow edema" pattern on MR imaging. MATERIALS AND METHODS We reviewed 23 nontraumatic painful lesions of the femoral condyle(More)
OBJECTIVE We assessed the prevalence, severity, and anatomic distribution of ankylosing spondylitis (AS)-related osteopenia (OP). METHODS We studied 70 patients (60 males, 10 premenopausal females) with AS (according to the New York criteria) to determine the frequency of OP. Bone mass was measured by plain radiographs of the spine, by single-photon(More)
PURPOSE To determine epiphyseal abnormalities in renal transplant recipients. MATERIALS AND METHODS Initial and final findings on serial conventional radiographs and magnetic resonance (MR) images obtained in symptomatic joints of transplant recipients were determined and correlated. RESULTS In 42 of 47 joints, T1-weighted MR images depicted 106(More)
PURPOSE To retrospectively evaluate magnetic resonance (MR) imaging for the depiction of meniscal tears with partially detached meniscal fragments displaced in the intercondylar notch or in the meniscal recesses of the knee. MATERIALS AND METHODS The institutional review board required neither its approval nor informed patient consent for the(More)
OBJECTIVE We describe the CT and sonographic appearance of 15 costal cartilage fractures observed in eight patients. CONCLUSION On CT, fracture was seen as a low-density area through the costal cartilage, with surrounding calcifications present near old fractures, and gas density within the cleft in some cases. On sonography, cartilage fracture appeared(More)
OBJECTIVE The diagnosis of ganglion cysts of articular origin may sometimes be uncertain when communication with the joint is not evident. Because we have observed that opacification of ganglion cysts revealed by arthrography can be significantly delayed, the purpose of this study was to determine retrospectively in 20 cases the time delay needed to show(More)
PURPOSE To assess dual-detector spiral CT arthrography in the evaluation of the entire knee cartilage obtained from cadavers. MATERIALS AND METHODS Two independent observers characterized articular cartilage in 12 cadaver knees in which MR imaging and dual-detector spiral CT arthrography were performed and compared their findings to those found during(More)
In an attempt to compare the sensitivity of bone radiographs and bone marrow magnetic resonance (MR) imaging for bone lesion detection in patients with stage III multiple myeloma (MM) and to evaluate the possible consequences of the replacement of the conventional radiographic skeletal survey (RSS) by an MR survey of the spinal and pelvic bone marrow in(More)
Sequential radiographic and magnetic resonance (MR) imaging examinations were performed in nine patients with an intravertebral vacuum cleft indicative of avascular necrosis. Progressive changes in the content of the cleft occurred within an hour after the patients were placed in a supine position. Initially, the cleft showed a gaslike pattern during(More)