(Solved): radiotracer concentration, radiotracer location and radiotracer energy, photon energy, absorber de ...

radiotracer concentration, radiotracer location and radiotracer energy, photon energy, absorber density and probability of the photon undergoing the photoeleftic effectl QUESTION 5 The partial volume effect is best described as: a. Underestimation of tracer uptake when only part of the organ to be imaged is posinioned within the field of view of the imaging system b. Underestimation of signal amplitude in a region of interest (ROI) due to blurring by the point spread function of the imaging system c. Underestimation of Rol size when attempting to draw a Rol on a structure that is smaller than the resolution of theimaging system d. Underestimation of the volume of a Rol due to blurring by the point spread function of the imaging system: QUESTION 6 What are the two decay modes used in nuclear mediane? Alpha decay Beta decay Positron decay (Beta plus decay) Isomeric Transition (gamma decay) Electron capture QUESTION 7 Scattered LoRs in SPECT cannot be formed outside of the body -inhey gamma rays must scatter parallel with the collimator gamma rays must scatter near the source