MIRA2015 Study Guide - Quiz Guide: High-Pass Filter, Collimator, Cyclotron
3 Aug 2018
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Week 1: what information is determined from the spatial coordinates of a digital image (x,y location, position, brightness, contrast, noise. Frequency line pairs in an image: assume that an image f(x,y) is sampled so that the result has m rows and n columns. Large/wide: many densities, low contrast: window width, window level, low-pass filter, high-pass filter, algorithm that converts data between spatial location and frequency domain, high-pass filter, low-pass filter, unsharp mask filter, fourier transform. Week2: nuclear medicine: which of the following increase the rate of radioactive decay, heat, magnetism, electricity, none of the above, a becquerel (bq) is a unit of measurement used in nuclear medicine. T1/2: 14 ml, 10 ml, 4. 355 ml, 4 ml, the permitted activity of 125i for waste discharge is 4. 5x104bq. A sealed bag of contaminated waste measures 185x106bq. Dual-source ct shows significant improvements over single source ct in diagnostic imaging. Describe these advantages provided by dual source ct.
