Gyuseung Cho

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Institutional review board approval was obtained. Informed patient consent was not required. Study was compliant with HIPAA. Performance of an automated pulmonary nodule detection program was evaluated on multi-detector row CT images that were acquired once but reconstructed retrospectively at different section thicknesses and reconstruction intervals. From(More)
The semirigid ureteroscope has a diameter of 7.2F for the distal 11 cm. and gradually enlarges to 11.9F at the proximal portion. We inserted the device in the ureter of 50 consecutive patients without the need for ureteral dilation. The instrument has 2, 0.025-inch channels (2.1F) for wires (0.025), irrigation or 250 mu. laser fibers. Flexible optical(More)
The purpose of this study was to evaluate thermal comfort properties of surgical gowns made of dual functional finish cotton and nonwoven fabrics which have barrier properties of blood and micro-organism. Four types of surgical gowns, which were made of nonwoven fabrics with finish or without and were made of cotton with finish or without, were tested. The(More)
PURPOSE To evaluate relative output ratio of collimator jaw and MLC defined small photon fields. METHODS Relative output ratios were measured using Gafchromic EBT3 film for a 6 MV photon beam on a Novalis Tx with HD120 MLC. Beam collimation was achieved by the jaws for 1.0 cm and 3.0 cm and MLC defined square field sizes between 0.5 cm and 1.0 cm with(More)
PURPOSE In abdominal radiotherapy inconsistent interfraction respiratory motion can result in deviations during treatment from what was planned in terms of target position and motion. Audiovisual biofeedback (AVB) is an interactive respiratory guide that produces a guiding interface that the patient follows over a course of radiotherapy to facilitate(More)
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