Microsoft word - jnmt42424 approved questions.doc

CONTINUING EDUCATION TEST: Cardiac CT: Indications and Limitations 1. At this time, why is CCT not recommended as a routine screening test for CAD? A. Too much overlapping of adjacent structures can cause false-positive and B. There are not enough data on the increased risks of cancer from this procedure. C. At this time, it does not provide a 3-dimensional view of the heart, which can D. It is not possible to differentiate calcified from noncalcified plaques. 2. Why are sublingual nitrates administered just before CCT acquisition? A. To help patients hold their breath for a longer time. B. To cause the coronary arteries to dilate. 3. Why is CCT the fastest growing noninvasive diagnostic cardiac imaging modality in B. The number of uninterpretable CCT studies is low. C. CAD can be both detected and quantified. D. New CT systems have increased spatial resolution. 4. What is the most common indication (or major indication) for CCT? A. Cardiac evaluation of obese patients. B. Screening to determine who needs stress myocardial perfusion imaging or a C. Anatomic evaluation of the coronary arteries for the presence of CAD. F. Evaluation of cardiac masses and pericardial disease. 5. Which of the following will result in a suboptimal CCT examination? C. Inability of patients to hold their breath for 15–20 s. 6. Why is it necessary to know a patient’s renal history before starting a CCT B. Patients with renal disease should not receive diltiazem or verapamil. C. The kidneys of a patient with renal disease, as evidenced by a high creatinine level, will not tolerate high doses of iodinated contrast material. D. Awareness of radiation exposure of the kidneys is more important in the 7. Which of the following is a strategy that can be used to minimize the effective dose B. Use dose modulation in a predetermined phase of the cardiac cycle. 8. Which statement about the optimal heart rate for CCT is correct? A. β-Blocker medications should be withheld for at least 48 h. B. A heart rate of ≤60 bpm is suboptimal. C. A heart rate of greater than 70 bpm is optimal. D. Diltiazem and verapamil are the best drugs to use for stabilizing the heart rate. 9. From the CCT acquired dataset, which reconstructed images are best for assessing relationships among different anatomic structures? C. Three-dimensional volume-rendered images. D. Coronal multiplanar reconstructed images. 10. What percentage of CCT studies performed with a 64-slice system will provide “good” data for interpretation, provided that adequate patient preparation and protocols 11. The management of which group of patients will benefit most from a calcium score A. Patients considered at low risk for CAD. B. Patients in the intermediate-risk category. C. Patients considered at risk for a coronary event. 12. Why is CCT coronary angiography not recommended for patients with symptoms of A. Because calcium makes it difficult to determine true lumen size and patency. B. Because such patients are at greater risk for an allergic reaction to iodinated

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