A first-generation CT scanner has a point source and detector translating together at 0.5 m/s. Each angular increment takes 0.5 s regardless of angle. It collects 360 projections over 180° with circular field-of-view diameter 0.5 m. Find scan time in seconds.
Each translation traverses the half-metre field at half a metre per second, taking one second. The source’s cycle model adds .5 seconds for rotation per projection, making 1.5 seconds per view. For 360 views, total=360×1.5=540 s. Counting only the 359 intervals between views gives 539.5 s, also within the official accepted range.
More X-Ray and Computed Tomography questions
GATE 2022 BM Q65– An acceptable chest radiograph is obtained at source distance 0.75 m using 50 kVp and 50…
GATE 2021 BM Q28– Which statements about planar X-ray imaging are correct?
GATE 2021 BM Q63– An 80 kVp X-ray system uses a 2.5 mm aluminium filter, replaced by copper for equal…
GATE 2020 BM Q16– In diagnostic X-ray imaging, which is NOT a primary electromagnetic-radiation interaction…
GATE 2020 BM Q59– A 36 cm ×48 cm chest radiograph is digitized to preserve 6 cycles/mm at 8-bit…
GATE 2020 BM Q60– In the shown 50 keV X-ray path, incident photon count is 2×10⁶. The ray crosses 2 cm soft…