CT Fluoroscopy for image-guided procedures: physician radiation dose during full-rotation and partial-angle CT scanning
Purpose To determine physician radiation exposure when using partial-angle computed
tomography (CT) fluoroscopy (PACT) vs conventional full-rotation CT and whether there is
an optimal tube/detector position at which physician dose is minimized. Materials and
Methods Physician radiation dose (entrance air kerma) was measured for full-rotation CT
(360°) and PACT (240°) at all tube/detector positions using a human-mimicking phantom
placed in a 64-channel multidetector CT. Parameters included 120 kV, 20-and 40-mm …
tomography (CT) fluoroscopy (PACT) vs conventional full-rotation CT and whether there is
an optimal tube/detector position at which physician dose is minimized. Materials and
Methods Physician radiation dose (entrance air kerma) was measured for full-rotation CT
(360°) and PACT (240°) at all tube/detector positions using a human-mimicking phantom
placed in a 64-channel multidetector CT. Parameters included 120 kV, 20-and 40-mm …
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