Welcome to your CT Scan NAME: EMAIL: [Number 1 on the figure corresponds to which of the following? Fig.] trachea piriform sinus aryepiglottic fold vocal cord None Comment . [Which of the following is considered in the calcula- tion of the MSAD for an axial (step-and-shoot) CT examination?] bed index gantry rotation time mA setting pitch None . [The component of the CT scanner responsible for the mathematical calculations of the image recon- struction process is the:] DAS analog-to-digital converter (ADC) digital-to-analog converter (DAC) array processor None . [First-generation CT scanners used a method of data acquisition based on a ________ principle.] multiplanar rotation-only translate-rotate transaxial None . [Which of the following terms may be used to describe the quantity of radiation emitted from the CT x-ray tube toward the patient?] effective mAs photon flux constant mAs photon fluence None . [The CT “window” controls the of the CT image as it appears to the viewer.] density and detail spatial and contrast resolution contrast and brightness attenuation coefficient and Hounsfield value None . [The full width at half maximum (FWHM) of a CT scanner is used to describe:] spatial resolution contrast resolution noise calibration accuracy None . [Number 3 on the figure corresponds to which of the following? Fig.] superior rectus muscle lateral rectus muscle medial rectus muscle inferior rectus muscle None Comment . [The polyenergetic x-ray beam emitted from a CT x-ray tube is susceptible to artifacts due to the phenomenon known as:] Beam hardening density bloom kerma partial volume None . [Which of the following is/are (a) component(s) of the adnexal area of the uterus? 1. ovaries 2. fallopian tubes 3. vagina] 1 only 1 and 2 only 2 and 3 only 1, 2, and 3 None . [A CT angiogram of the neck is performed primarily for the evaluation of the:] carotid veins jugular veins carotid arteries coronary arteries None . [Number 3 on the figure corresponds to which of the following? Use Fig.] esophagus left pulmonary vein trachea left primary bronchus None Comment . [Which of the following archival media is capable of storing the largest number of CT images?] floppy disk magnetic tape VHS tape optical disk None . [The dosimetry index used to approximate the radiation dose for CT sections acquired during a helical scan is called the: Check powers ,w, Vol] CTDIW effective dose CTDIvol None . [Which of the following is not an advantage of an automatic power injector over the manual bolus method of intravenous contrast agent administration?] uniform contrast enhancement throughout the exam consistent contrast agent administration for all patients decreased risk of contrast-induced nephrotoxicity (CIN) shorter injection times None . [Which of the following anatomic organs is located within the peritoneal cavity?] pancreas kidneys uterus liver None . [Abnormalities of the middle and inner ear may be best demonstrated with CT utilizing sections.] 1- to 2-mm 3- to 4-mm 5-mm 10-mm None . [Number 4 on the figure corresponds to which of the following? Fig.] superior facet pedicle transverse process lamina None Comment . [Number 1 on the figure corresponds to which of the following?] right brachiocephalic vein left subclavian artery left brachiocephalic vein brachiocephalic artery None Comment . [Before a CT image can be reconstructed by a computer, the transmission signal produced by the detectors must be converted into numerical information by a(n):] kernel analog-to-digital converter (ADC) array processor analog-to-digital converter (ADC) None . Time's up
