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Accurate attenuation correction in PET/CT relies upon an anatomically matched PET and CT. Respiratory motion introduces attenuation mismatch because the PET and CT scans are not necessarily temporally correlated. Acquiring a 4DCT scan in which each frame of the 4DCT is matched with a frame in a 4D gated PET is one strategy for obtaining temporally correlated PET and CT frames. In this paper we propose...
Four-dimensional computed tomography (4D CT) is significant in radiotherapy treatment planning for thorax and upper abdomen to take their motion induced by respiration into consideration, but its high radiation dose becomes a major concern and impedes its wide application. To solve the problem, we propose an image interpolation approach to get 4D CT simulation images. We simulate 4D CT images at arbitrary...
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