List of top Medical Imaging Systems Questions asked in GATE BM

An RF pulse is applied to acquire an axial MR image at the isocenter of a 1.5T MRI scanner with slice thickness of 2.5 mm. Assuming a gradient field strength of 2 Gauss/cm is applied and Gyromagnetic ratio of protons is 42.58 MHz/T, the RF pulse bandwidth required for slice selection is \(\underline{\hspace{2cm}}\) kHz.
The radioactivity of a radionuclide with decay constant \(3.22 \times 10^{-5}\) s\(^{-1}\) is 6 mCi at 10:30 AM. The radioactivity at 4:30 PM the same day will be \(\underline{\hspace{2cm}}\) mCi. (rounded off to two decimal places)
Which of the following statements are CORRECT in the context of planar X-ray imaging?