MIC CT Registry Review Updated with Correct and Verified Answers

MIC CT Registry Review Updated with Correct and Verified Answers 1. In order for an x-ray photon to be measured it must: 1. enter the detector chamber 2. be absorbed by the detector material 3. be converted to a measurable event: 1,2,3 2. Which system component converts the projection attenuation data into the proper digital form for the array processor?: analog-to-digital converter 3. Which of the following is NOT a function of a PACS system? a. reconstruction of the image from the raw data b. long term data storage c. digital distribution of images d. image display for the radiologist: reconstruction of the image from raw data 4. Which of the following is not part of the CT tube? a. tungsten target b. collimator c. rotating anode d. filament: collimator 5. Which of the following is FALSE regarding CT systems? 1. they are limited to nonoblique transverse scanning 2. they cannot generate a straight coronal or sagittal image 3. hey have no moving parts: 1,2,3 6. Xrays are used in CT because: a. they are easily produced by the high frequency generator b. they are less harmful than the heating effects of microwave radiation c. they penetrate the body according to specific attenuation characteristics of each tissue d. the FDA imposes no limit on the dose to the patient: C 7. Most of the commands from the technologists are received by the:: opera- tors console 8. Xrays are produced whenever fast moving electrons collide with any form of matter because:: The electron loses kinetic energy which is converted into the emission of an x-ray photon 9. The mA determines the:: quantity of x-ray photons 10. Which of the following is a component NOT normally located in the gantry of a modern CT system?: array processor 11. Tube interscan delay time refers to:: the time between the end of one scan and the start of the next scan during which the tube will cool 12. Increased will increase the likelihood that a given x-ray will pen- etrate a material 1. kV 2. mA 3. exposure time: 1 13. Which of the following are NOT commonly used on today's commercially available CT scanners? 1. xenon detectors 2. fourth-generation technology 3. continous rotation technology: 1,2 14. Which of the following statements is FALSE regarding occurrences after an x-ray photon penetrates the detector aperture? 1. the photon can pass through the detector unmeasured 2. the photon is converted completely into a electron 3. the measured signal in enhanced by an amplifier: 2 15. Scatter radiation is caused by:: deflections from the original trajectory of an x-ray photon through the patient 16. What control does the operator have over the x-rays in a CT exam?: the energy level and the quantity of x-rays can be selected 17. Which of the following is the standard that's used to achieve compatibility for image transfer between various imaging modalities, viewing stations, and printers in a hospital?: DICOM