Paul Steiner

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BACKGROUND Improvements in magnetic resonance imaging (MRI) technology have enabled the acquisition of three-dimensional MRI datasets in a single breath hold. We adopted this technique to make a three dimensional intraluminal and extraluminal assessment of the colon in three patients with various colonic disorders. METHODS One patient was studied after(More)
PURPOSE To evaluate the performance of magnetic resonance (MR) colonography in the detection of colorectal mass lesions. MATERIALS AND METHODS Twenty-three patients underwent MR colonography preceding colonoscopy. The colon was filled with a gadolinium-water mixture (1:100) with MR imaging guidance, and the patient was imaged prone and supine with a(More)
An ultrafast three-dimensional (3D) sequence was developed, enabling the acquisition of 44 contiguous 2.0- to 2.2-mm thin sections, during intravenous application of paramagnetic contrast, in a single breath-hold. To estimate the potential clinical usefulness, images were assessed qualitatively and quantitatively with regard to visibility of main, lobar,(More)
PURPOSE To evaluate dynamic magnetic resonance (MR) defecography performed with a superconducting, open-configuration system in diagnosis of defecation disorders. MATERIALS AND METHODS Five healthy volunteers and 15 patients with defecation disorders were studied with MR defecography performed with a superconducting, open-configuration system; the(More)
PURPOSE Evaluation of digitized chest x-ray for the detection of pulmonary infiltrations in bone marrow transplant patients during aplasia. METHODS Digitized chest x-rays of 40 patients (21 female, 19 male) with "Fever of unknown origin" (FUO) were evaluated concerning radiological signs of pulmonary infiltrations and correlated to clinical findings,(More)
OBJECTIVE The goal of this study was to prospectively compare the accuracy of transthoracic and transesophageal B-mode and Doppler echocardiography with helical CT for detecting acute pulmonary embolism. SUBJECTS AND METHODS Thirty-five consecutive patients underwent transthoracic and transesophageal echocardiography and contrast-enhanced helical CT.(More)
The purpose of this study was to perform percutaneous laser disc decompression (PLDD) under MR guidance in an open configuration 0.5-T MR system. Following failed conservative treatment for 6 months, eight patients with contained disc herniations were enrolled in the study. Following MR guided introduction of the laser fiber into the targeted disc space,(More)