1. BIRADS stands for a. Breast imaging reporting and data system b. Best imaging reporting and data system c. Brain imaging reporting and data system d. Breast investigation reporting and data system 2. Grid is used in between a. Patient and the X-ray tube b. Films and the X-ray tube c. Anode and the cathode d. Patient and the X-ray film 3. Unit of X-ray is a. Gray b. Roentgen c. Rad d. all 4. Haustra pattern are seen in a. Duodenum b. Caecum c. Oesophagus d. Ileum 5. Use of intensifying screens decrease patient dose by a factor of.... a. 5 b. 10 c. 15 d. 20 6. The use of Anti-Scatter grid has no effect on a. Scatter Clean Up b. Image Contrast c. X-Ray Beam Energy d. Image Gray Scale 7. Photosensitive layer of radiographic film is a. Base b. Supercoat c. Emulsion d. Phosphor 8. Filament of X-ray tube is made up of tungsten because it has a. High melting point 3370' C b. Less vaporizatio at high temperature c. Good mechanical support and property d. All of the above 9. The Spatial resolution is high in modalities a. USG b. X-ray c. MRI d. None 10. The magnetic field in a MRI machine is measured in a. Hounsfield unit b. Tesla c. Watt/sec d. None of the above 11. The main constituents of the X-ray film os a. AgBr b. CaBromide c. MgBromide d. CaIodide 12. Image receptor in CR system is a. PMT b. silicone TFT c. Amorphous selenium d. PSP 13. The cones are concentrated a. On the center of retina b. Between lens and retina c. On the periphery of retina d. Between aqueous & vitreous humour 14. The intensity of x radiation at a given distance from the source of radiation varies a. Directly with distance b. Inversely with distance c. Inversely with square of distance d. Doesn't change 15. Which of the following is a true statement? a. The trigone of the lateral ventricle is the confluence of the body, occipital and temporal bones b. Calcification of the choroid plexus is more common on the lateral skull radiograph than on CT c. The velum inter postium is a cisternal space above the fornix d. The internal cerebral veins are located in the quadrigeminal plate cistern Submit All