نتایج جستجو برای: patient motion
تعداد نتایج: 914097 فیلتر نتایج به سال:
Lesions of area MT/V5 in monkeys and its presumed homologue, the motion area, in humans impair motion perception, including the discrimination of the direction of global motion in random dot kinematograms. Here we report the results of similar tests on patient TF, who has a discrete and very small, unilateral infarct in the medial superior part of the right occipital cortex. Structural MRI, co-...
Tumor motion during radiation treatment on a helical tomotherapy unit may create problems due to interplay with motion of the multileaf collimator, gantry rotation, and patient couch translation through the gantry. This study evaluated this interplay effect for typical clinical parameters using a cylindrical phantom consisting of 1386 diode detectors placed on a respiratory motion platform. All...
Accurate alignment of intra-operative X-ray coronary angiography (XA) and pre-operative cardiac CT angiography (CTA) may improve procedural success rates of minimally invasive coronary interventions for patients with chronic total occlusions. It was previously shown that incorporating patient specific coronary motion extracted from 4D CTA increases the robustness of the alignment. However, pre-...
Introduction: Patient motion during Magnetic Resonance Imaging (MRI) is a major degradation factor of MR image quality. In many cases, patient motion moves regions of interest prescribed by the operator out of the field of view and creates sub-optimal views for diagnosis. In this abstract, we propose an algorithm that relies on the known position and orientation of the patient anatomy at the be...
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