Mosbys CT Simulated Exam Questions

Mosby's CT Simulated Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025)

• As related to the cardiac cycle, the term ______ refers to

the relaxation of heart muscle.

• diastole
• equilibrium
• systole
• a-fib - Correct Answers ✅a. diastole
• Which of the following may be considered one of the high-

osmolar contrast media (HOCM)?

• iothalamate meglumine
• diatrizoate sodium
• iohexol
• 1 only
• 3 only
• 1 and 2
• 1, 2, and 3 - Correct Answers ✅c. 1 and 2
• Which of the following technical changes would serve to

decrease patient radiation dose during a CT examination?

• increase in matrix size
• change from soft tissue to bone algorithm
• decrease of tube rotation from 360 to 180 degrees 1 / 4

Mosby's CT Simulated Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025)

• decrease in DFOV - Correct Answers ✅c. decrease of

tube rotation from 360 to 180 degrees (Many CT scanners allow the tech to reduce the total rotation of the x-ray tube, thus reducing the scan time and subsequent patient radiation dose. This type of partial scan, commonly referred to as "half-scan" or segmenting, is most often used to improve the temporal resolution of the acquisition)

• Which of the following medications may be administered to

a patient who is having a severe anaphylactoid reaction to iodinated contrast material?

• epinephrine
• atropine
• diphenhydramine
• 1 only
• 1 and 2
• 1 and 3
• 1, 2, and 3 - Correct Answers ✅c. 1 and 3

(Epinephrine [Adrenalin] is an adrenergic drug used as a bronchodilator. Diphenydramine [Benadryl] may be used to block the physiologic effects of the body's release of 2 / 4

Mosby's CT Simulated Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025) histamine, thus reducing the allergic effect of the contrast material. Atropine should be used only to combat bradycardia during a vagal reaction to contrast media)

• In an effort to reduce patient radiation dose, the technical

factors of the applied CT protocol should be optimized on the

basis of:

• age
• sex
• size or weight
• physical condition - Correct Answers ✅c. size or weight
• The escape of contrast material from a needle or blood

vessel into the subcutaneous tissues is called:

• infusion
• extraversion
• influxation
• extravasation - Correct Answers ✅d. extravasation
• Thorough explanation of the CT procedure and proper

communication with the patient are vital in ensuring that:

• breathing instructions are properly followed
• motion artifact does not occur 3 / 4

Mosby's CT Simulated Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025)

• patient anxiety is kept at a minimum
• 1 and 2
• 1 and 3
• 2 and 3
• 1, 2, and 3 - Correct Answers ✅d. 1, 2, and 3
• Which of the following is considered in the calculation of

the MSAD for an axial (step-and-shoot) CT exam?

• bed index
• gantry rotation time
• mA setting
• pitch - Correct Answers ✅a. bed index

(MSAD [multiple scan average dose] accounts for the effects of image spacing, or bed index, on patient radiation dose during axial scanning. *MSAD increases when slice thickness is greater than image spacing* and decreases when slice thickness is less than the bed index)

• Risk factors for contrast-induced nephrotoxicity (CIN)

include:

• pheochromocytoma
• / 4