GATE Medical Imaging Systems: X-Ray and Computed Tomography – Previous Year Questions
15 GATE previous year questions on X-Ray and Computed Tomography (Medical Imaging Systems, Biomedical Engineering) with answers and explanations, from every paper.
- GATE 2020 BM Q16 – In diagnostic X-ray imaging, which is NOT a primary electromagnetic-radiation interaction in soft tissue?
- GATE 2020 BM Q59 – A 36 cm ×48 cm chest radiograph is digitized to preserve 6 cycles/mm at 8-bit quantization. Find approximate image size in MB to two decimals, using…
- GATE 2020 BM Q60 – In the shown 50 keV X-ray path, incident photon count is 2×10⁶. The ray crosses 2 cm soft tissue,0.5 cm blood and 1 cm soft tissue. Attenuation…
- 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 attenuation. Mass attenuation coefficients are 0.02015 m²/kg for…
- GATE 2022 BM Q64 – 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.…
- GATE 2022 BM Q65 – An acceptable chest radiograph is obtained at source distance 0.75 m using 50 kVp and 50 mAs. The subject moves to 1 m while kVp stays unchanged. Find…
- GATE 2023 BM Q23 – A polychromatic X-ray beam has the energy spectrum in Figure P. Which option depicts the energy spectrum after passing through a human body? In every…
- GATE 2023 BM Q40 – A parallel X-ray beam traverses a uniform circular disc of radius R and linear attenuation coefficient 1 unit⁻¹. A ray is offset by distance t from…
- GATE 2023 BM Q56 – A normally incident X-ray of energy 140 keV passes through the tissue phantom shown. Tissue P has attenuation coefficient 1 cm⁻¹ and thickness 1 cm;…
- GATE 2023 BM Q57 – A two-dimensional square plate of side 20 mm contains a homogeneous circular inclusion of diameter 5 mm. A parallel X-ray beam of width 30 mm is used…
- GATE 2024 BM Q15 – Which event is NOT typically encountered in diagnostic X-ray projection radiography?
- GATE 2024 BM Q27 – Monochromatic gamma photons enter homogeneous tissue. Which relationships hold for half-value-layer thickness?
- GATE 2024 BM Q48 – The graph shows X-ray attenuation coefficients versus photon energy for bone,DCA and water. A phantom is imaged at 50 and 150 keV and the developed…
- GATE 2024 BM Q53 – A 70 keV X-ray beam passes through 16 cm muscle and 4 cm bone. Their half-value layers are 3.5 and 1.8 cm. Find the percentage transmitted intensity…