《英文msh词典》Computed Tomography,Helical
[入口词] Computed Tomography,Helical
[主题词] Tomography,Spiral Computed
[英文释义] Computed tomography where there is continuous X-ray exposure to the patient while being transported through a rotating fan beam. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography,where data is obtained and computed from individual sequential exposures.