Ct registry review - Study guides, Class notes & Summaries

Tungsten is used as the target material on the tube's anode b/c it has a __ atomic number and a __ melting point. a. low, high b. high, low c. low, low d. high, high CORRECT ANSWER d _____ scanner design was the first to acquire four slices in a single rotation. a. second generation b. third generation c. multi-row detector d. continuous rotation CORRECT ANSWER c The enormous heat that builds up in the CT tube is caused by the: a. intensity of the x-ray emitted from the tube b...

1. Which of the following statements is false? a. The elimination of superimposed structures is a distinct advantage of CT over plain film imaging. b. CT images possess superior quality. c. Contrast resolution is approximately 10x better with CT compared to plain film imaging. d. Spatial resolution is approximately 10x better with CT compared to plain film imaging. CORRECT ANSWER d 2. Which type of beam coverage will result in the greatest production of scatter radiation? a. F...

Which of the following is a typical protocol for a CT study of the brain for a patient with a history of dizziness? CORRECT ANSWER 2.5-mm × 2.5-mm sections through the posterior fossa, 5 mm × 5 mm to vertex Which of the following describes the scout (localizer) projection used to prescribe an axial CT acquisition of the brain? CORRECT ANSWER lateral Glioma is a general term used to describe a group of primary tumors. Consisting of malignant glial cells, gliomas occur in the: CORRECT ANSW...

______ offers standardized lab values indicating the blood's ability to coagulate for patients who are taking anticoagulant meds. a) PT b) PTT c) INR d) GFR CORRECT ANSWER c when a patient aspirates an iodinated agent, which of the following may occur? a) granulomas b) edema c) abscess d) ascites CORRECT ANSWER b when a patient aspirates barium, which of the following may occur? a) edema b) ascites c) granulomas d) abscess CORRECT ANSWER c which of the following are p...

An average range for activated PTT is? correct answers 25-35 seconds What is the correct angle of insertion for placing a butterfly needle into a vein for intravenous administration of a contrast media? correct answers 15 degrees A total volume of 125 mls of an iodinated contrast agent is administered intravenously via automatic injector in 50 seconds. The flow rate for this injection is? correct answers 2.5 mL/sec The acronym CTDI is used to describe what? correct answers The radiation...

True or False: Conventional step-step scanning you can't retrosepectively recon Slice thickness. CORRECT ANSWER True True or False: Helical and Multi-Slice can retrospectively recon slice thickness because it is a volume CORRECT ANSWER True What is the appropriate IV Contrast dosage in cc/kg? CORRECT ANSWER 1-2 cc/kg What is the 1st drug administered for anaphylactic shock? CORRECT ANSWER Epinephrine What is the first drug administered for a vasovagal reaction? CORRECT ANSWER Atropi...

left pulmonary artery CORRECT ANSWER Number 1 on the figure corresponds to which of the following? a. lt pulmonary artery b. ascending aorta c. inferior vena cava d. descending aorta 4 CORRECT ANSWER Which number on the figure corresponds to the superior vena cava? D CORRECT ANSWER The abnormal density located in the posterior portion of the left lung field on the figure has an avg attenuation value of +5.0 HUs. This density most likely represents: a. pneumothorax b. hemothorax c. a...

Mosby CT Registry Review (2023/2024) Graded A What is the smallest component of a digital image pixel How many CT numbers are assigned to each pixel in the image matrix? One In a CT image, the CT number Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a pixel What is an element of the digital image pixel Which of the following influences the spatial resolution in cardiac CT imaging *detector size *recons...

Mosby CT Registry Review Complete Answers 2024 What is the smallest component of a digital image ️pixel How many CT numbers are assigned to each pixel in the image matrix? ️One In a CT image, the CT number ️Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a ️pixel What is an element of the digital image ️pixel Which of the following influences the spatial resolution in cardiac CT imaging...

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 CORRECT ANSWER 1,2,3 Which system component converts the projection attenuation data into the proper digital form for the array processor? CORRECT ANSWER analog-to-digital converter 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 ...