Abstract
X-ray spectra were measured using a CdZnTe detector for the various combinations of water phantom thickness (15–25 cm), iodine contrast media thickness (3–60 μm in a 1 cm thick simulated tumour), La filter thickness (0, 100, and 160 μm), and X-ray tube voltage (50, 65, and 80 kV). The iodine thickness was obtained as a contrast using energy information from the X-ray spectra and current, which was calculated as the summed products of X-ray energy and events. The most sensitive method of iodine detection is the energy measurement method with 65 kV tube voltage.
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