Assessment of longitudinal beam property and contrast uniformity for 256- and 320-row area detector computed tomography scanners in the 160-mm nonhelical volume-acquisition mode.

CONCLUSION: This study reveals that the radiation dose on the anode side of the x-ray tube shows approximately 40%-45% reduction compared with that on the isocenter position, and the heel effect properties for 256- and 320-row ADCT scanners longitudinally differ throughout the x-ray beam. The x-ray tube for individual ADCT scanners is mounted in an opposite direction along the long axis of the patient.
PMID: 31254457 [PubMed - as supplied by publisher]

Source: Journal of Applied Clinical Medical Physics - June 28, 2019 Category: Physics Authors: Hara T, Niwa S, Urikura A, Matsubara K, Hoshino T, Nishimaru E, Taniguchi T Tags: J Appl Clin Med Phys Source Type: research