Radiology
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Comparative Study Clinical Trial
Occult scaphoid fractures: comparison of multidetector CT and MR imaging--initial experience.
To compare the diagnostic performance of multidetector computed tomography (CT) and magnetic resonance (MR) imaging in patients clinically suspected of having a scaphoid fracture and who had normal initial radiographs, with radiographs obtained 6 weeks after trauma as the reference standard. ⋯ Multidetector CT is highly accurate in depicting occult cortical scaphoid fractures but appears inferior to MR imaging in depicting solely trabecular injury. MR imaging is inferior to multidetector CT in depicting cortical involvement.
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To prospectively determine anomalies of limbic tracts and to describe the relationship between these anomalies, seen on diffusion-tensor magnetic resonance (MR) and fiber tract (FT) reconstruction images, and learning and memory in children with myelomeningocele (MM) and Chiari II malformation. ⋯ Diffusion-tensor and FT reconstruction images revealed that limbic fiber abnormalities were common in patients with MM and Chiari II malformation. Nonverbal immediate recall task performance appeared to be related to abnormalities of the fornix.
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To retrospectively determine the prevalence and natural history of incidental pulmonary emboli in oncology patients, the number of such cases reported at initial thoracic computed tomographic (CT) image interpretation, and the factors that contribute to underdiagnosis. ⋯ Incidental pulmonary emboli were seen in 16 (4%) oncology patients but were initially reported in only four of them. The small size of involved arteries contributes to the failed detection at initial CT image interpretation, and patients with emboli in these small vessels may have deep vein thrombosis or recurrent emboli.
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Randomized Controlled Trial
Peripheral arteries: treatment with antibodies of platelet receptors and reteplase for thrombolysis--APART trial.
To prospectively compare the safety and efficacy of combination therapy with the glycoprotein IIb/IIIa antagonist abciximab plus the third-generation thrombolytic agent reteplase versus those of therapy with the standard thrombolytic agent urokinase plus abciximab. ⋯ The proposed regimen resulted in only a limited number of major complications, and the low amputation rate in both groups may be attributed to abciximab.
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Comparative Study
Amyotrophic lateral sclerosis: diffusion-tensor and chemical shift MR imaging at 3.0 T.
To prospectively determine whether diffusion-tensor magnetic resonance (MR) imaging in conjunction with two-dimensional chemical shift imaging can assist in identifying upper motor neuron involvement and whether disease severity and duration can be predicted based on imaging parameters in patients with amyotrophic lateral sclerosis (ALS). ⋯ Diffusion-tensor and two-dimensional chemical shift MR imaging spectroscopy can be used to identify upper motor neuron involvement and predict disease duration in patients with ALS.