CT SCAN is based on?: (A) piezoelectric effect, (B) linear attenuation of xrays, (C) Coincidence Imaging, (D) Pulse Echo principle
Answer is B. CT scan is based on Linear attenuation of Xrays/stopping power of various tissues, which is based on its density and is measured in Hounsfield Units. Pulse-Echo principle and Piezoelectric effect are used in USG. Coincidence imaging is used in PET scan.