Journal of computer assisted tomography
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J Comput Assist Tomogr · Jul 1995
Case ReportsCT-guided pericardial drainage catheter placement with subsequent pericardial sclerosis.
Percutaneous drainage of malignant pericardial effusion is an established alternative to surgical pericardiotomy and pericardiectomy. We report the placement of a pericardial drainage catheter under CT guidance, with subsequent pericardial sclerosis. Previously described imaging modalities (fluoroscopy and ultrasound) used for the guidance of drain placement are compared and contrasted with our use of CT.
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J Comput Assist Tomogr · Sep 1994
Case ReportsDural sinus thrombosis and venous infarction associated with antiphospholipid antibodies: MR findings.
Our goal was to describe the neuroradiologic findings in hemorrhagic venous infarction related to a hypercoagulable state caused by antiphospholipid antibodies (aPA). ⋯ Hemorrhagic venous infarction may result from the hypercoagulable state related to aPA. The presence of these antibodies should be considered in the setting of otherwise unexplained dural sinus thrombosis and/or venous infarction.
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J Comput Assist Tomogr · Mar 1994
Automatic 3D intersubject registration of MR volumetric data in standardized Talairach space.
In both diagnostic and research applications, the interpretation of MR images of the human brain is facilitated when different data sets can be compared by visual inspection of equivalent anatomical planes. Quantitative analysis with predefined atlas templates often requires the initial alignment of atlas and image planes. Unfortunately, the axial planes acquired during separate scanning sessions are often different in their relative position and orientation, and these slices are not coplanar with those in the atlas. We have developed a completely automatic method to register a given volumetric data set with Talairach stereotaxic coordinate system. ⋯ We present a fully automatic registration method to map volumetric data into stereotaxic space that yields results comparable with those of manually based techniques. The method requires no manual identification of points or contours and therefore does not suffer the drawbacks involved in user intervention such as reproducibility and interobserver variability.