Welcome to your CT Scan NAME: EMAIL: [Number 2 on the figure corresponds to which of the following? Fig. ] jejunum sigmoid colon ileum cecum None Comment . [A specialized CT examination involving the administration of an enteral contrast agent directly into the small bowel via nasogastric tube is called:] CT enteroclysis CT colonography CT enterography CT colonoscopy None . [MSCT systems typically employ which of the following types of detectors?] tungsten ring solid-state scintillation charged-coupled device (CCD) gas ionization None . [Simple cysts of the kidney have average attenuation values in the range of:] 40 to 0 Hounsfield units 0 to þ20 Hounsfield units 30 to þ50 Hounsfield units above þ60 Hounsfield units 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 . [Which of the following image artifacts is unique to multislice CT (MSCT) systems?] step artifact aliasing artifact out-of-field artifact cone beam artifact None . [Number 8 on the figure corresponds to which of the following?] duodenum descending colon jejunum duodenum None Comment . [The continuous gantry rotation required by helical CT acquisition is made possible by the application of:] electromagnetic bushings titanium bearings slip-rings oil-cooled couplings None . [Complex fractures of the wrist are most common in which of the following carpal bones?] hamate scaphoid capitate triquetrum None . [When an operator reduces the scan field of view for a particular body part, which of the following technical changes occurs?] The displayed image appears larger. Spatial resolution increases. A smaller number of detectors are activated. The displayed image appears smaller. None . [The reduction in number of infectious organisms without a complete elimination is termed:] medical asepsis sterilization surgical asepsis immunization None . [An acquisition is made on a 64-slice MSCT system in which each detector element has a z-axis dimension of 0.625 mm. With a selected beam width of 40 mm and the beam pitch set at 1.50, how much will the table move with each rotation of the gantry?] 20 mm 40 mm 60 mm 80 mm None . [Which of the following artifacts is not affected by the CT technologist?] motion partial volume edge gradient ring None . [Number 4 on the figure corresponds to which of the following? Fig.] left common iliac artery right common iliac artery left common iliac vein None Comment . [Number 2 on the figure corresponds to which of the following? Fig. ] ureters cervix seminal vesicles vaginal cuff None Comment . [Number 2 on the figure corresponds to which of the following?] left internal jugular vein left external carotid artery left internal carotid artery left external jugular vein None Comment . [During HRCT of the lungs, edematous changes in the posterior lungs may be differentiated by positioning of the patient in the position.] supine right lateral decubitus left lateral decubitus prone None . [The limiting resolution of the bone algorithm in the figure is:] 6.1 lp/cm 9.5 lp/cm 14.6 lp/cm 15.5 lp/cm None Comment . [During the use of CT fluoroscopy for guided interven- tional procedures, which of the following technical considerations may be used to reduce occupational radiation exposure? 1. increased kVp 2. lead shielding 3. use of a needle holder] 2 only 1 and 2 only 1 and 3 only 2 only None . [CT images of the chest should be acquired with the patient:] at full inspiration breathing quietly at full expiration breathing normally None . Time's up
