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33. In TOF MRA, signals from tissues other than blood are eliminated by a. Digital subtraction algorithms b. Saturation of blood spins c. Saturation of tissue spins d. b and c e. a and b

33. In TOF MRA, signals from tissues other than blood are eliminated by a. Digital subtraction algorithms b. Saturation of blood spins c. Saturation of tissue spins d. b and c e. a and b

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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33. In TOF MRA, signals from tissues other than blood are eliminated by a. Digital subtraction algorithms b. Saturation of blood spins c. Saturation of tissue spins d. band c e. a and b 34. In PC MRA, signals from tissues other than blood are eliminated by a. Digital subtraction algorithms b. Saturation of blood spins c. Saturation of tissue spins d. band c e. a and b 35. Diffusion imaging is used to determine a. The rate of diffusion of deoxyhemoglobin in the brain b. The rate of diffusion of oxyhemoglobin in the brain c. The coefficient of diffusion D d. The rate of exchange of intracellular to extracellular water in the brain e. None of the above 36. In MR, the fastest imaging technique available today is: a. Spin echo b. Inversion recovery c. Single-shot EPI d. Rapid spin echo 37. For MR imaging, the patient's weight must be entered accurately during a patient registration to: a. Enable calculation of the specific absorption rate (SAR). b. Prevent damage to the RF coils. c. Prevent artifacts in the images. d. Prevent damage to the patient table. 38. A pregnant patient may have an MR imaging study if: a. She is in the second or third trimester of pregnancy b. The outcome of the study will impact the patient's immediate care c. Diagnosis is required immediately d. Alternative tests pose unacceptable risks to the patient or fetus e. All of the above
Transcribed Image Text:33. In TOF MRA, signals from tissues other than blood are eliminated by a. Digital subtraction algorithms b. Saturation of blood spins c. Saturation of tissue spins d. band c e. a and b 34. In PC MRA, signals from tissues other than blood are eliminated by a. Digital subtraction algorithms b. Saturation of blood spins c. Saturation of tissue spins d. band c e. a and b 35. Diffusion imaging is used to determine a. The rate of diffusion of deoxyhemoglobin in the brain b. The rate of diffusion of oxyhemoglobin in the brain c. The coefficient of diffusion D d. The rate of exchange of intracellular to extracellular water in the brain e. None of the above 36. In MR, the fastest imaging technique available today is: a. Spin echo b. Inversion recovery c. Single-shot EPI d. Rapid spin echo 37. For MR imaging, the patient's weight must be entered accurately during a patient registration to: a. Enable calculation of the specific absorption rate (SAR). b. Prevent damage to the RF coils. c. Prevent artifacts in the images. d. Prevent damage to the patient table. 38. A pregnant patient may have an MR imaging study if: a. She is in the second or third trimester of pregnancy b. The outcome of the study will impact the patient's immediate care c. Diagnosis is required immediately d. Alternative tests pose unacceptable risks to the patient or fetus e. All of the above
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