front 1 The first modality capable of producing images without the use of ionizing radiation was: a. ultrasound b. magnetic resonance imaging c. nuclear medicine d. computerized tomography | back 1 a. ultrasound |
front 2 Which of the following was the first modality to provide sectional anatomy images with increase visibility of soft-tissue structures? a. conventional tomography b. computed tomography c. positron emission tomography d. magnetic resonance imaging | back 2 b. computed tomography |
front 3 With the integration of strong magnets and radio frequencies, high resolution soft-tissue imaging in multiple planes became available with: a. nuclear medicine b. single-photon emission computed tomography c. computed tomography d. magnetic resonance imaging | back 3 d. magnetic resonance imaging |
front 4 Single-photon emission computed tomography took nuclear medicine imaging concepts and added the use of: a. new pharmaceuticals b. new pulsing sequences c. gamma camera movement d. stronger frequency transducers | back 4 c. gamma camera movement |
front 5 Which of the following uses gamma-emitting radionuclides to produce images? a. x-ray images b. nuclear medicine images c. PET images d. sonography images | back 5 b. nuclear medicine images |
front 6 Molecular imaging advancements using a positron-emitting radiopharmaceutical is: a. SPECT b. CAT c. MRI d. PET | back 6 d. PET |
front 7 The superimposition of images from two different digital modalities produces images: a. of anatomic and physiologic perpectives b. using software for image integration c. from hybrid equipment, such at PET-CT d. all of the above | back 7 d. all of the above |
front 8 The complexity of technology requires the radiographer to: a. have a more specific skill set b. have an extensive knowledge of anatomy c. have computer networking classes d. A and B | back 8 d. A and B |
front 9 Which of the following specialized imaging techniques provides cross-sectional images at a low cost, is readily available, and has the ability to differentiate cystic, solid, and complex tissue? a. sonography b. CT c. MRI d. PET | back 9 a. sonography |
front 10 In ultrasound the high frequency sound waves are produced by: a. sound waves emanating from the body b. electrical stimulation of a specialized crystal c. magnets and pulse radiofrequencies d. radiopharmaceuticals | back 10 b. electrical stimulation of a specialized crystal |
front 11 Reflections in ultrasound produced by tissue interaction are called: a. isoechoic b. echoes c. pulses d. frequencies | back 11 b. echoes |
front 12 Fluid-filled structures transmitting sound waves easily and appearing as a dark region on the image are _____ tissue. a. hyperechoic b. hypoechoic c. anechoic d. isoechoic | back 12 c. anechoic |
front 13 The major advantage of ultrasound is: a. no adverse effects on human tissue b. ability to image anatomy in cross-section c. ionizing radiation is used to produce an image d. only low energy gamma radiation is used to produce an image | back 13 a. no adverse effects on human tissue |
front 14 To produce quantitative data in ultrasound, the equipment must: a. integrate real-time imaging with sono CT b. include harmonic technology c. fuse conventional real-time with Doppler imaging d. have multifrequency transucer | back 14 c. fuse conventional real-time with doppler imaging |
front 15 To demonstrate stenosis, blood clots, plaques, and emboli requires: a. a multifrequecy transducer b. a color-flow duplex system c. sono CT real-time compound imaging d. harmonic imaging | back 15 c. sono CT real-time compound imaging |
front 16 Using a narrow x-ray beam and scanning from multiple angles, the amount of radiation absorbed in tissue is represented by: a. a relative line attenuation coefficient b. data for computer reconstruction c. a gray scale on the computer monitor d. all of the above | back 16 d. all of the above |
front 17 The attenuation of a specific tissue relative to water is the: a. CT number b. echo coefficient c. positron absorption d. pulse sequence | back 17 a. CT number |
front 18 Window width in CT controls: a. density b. gray scale c. midrage densities d. resolution | back 18 a. density |
front 19 The midpoint or center of the number of densities being viewed in a selected window on CT is the: a. window width b. pulse width c. window level d. x-ray level | back 19 c. window level |
front 20 High-resolution CT requires the slice sections to be: a. 1.5 to 2.0 mm b. 2 to 5 mm c. 5 to 10 mm d. 1 to 2 cm | back 20 a. 1.5 to 2.0 mm |