General Cardiovascular Magnetic Resonance Imaging

General Cardiovascular Magnetic Resonance Imaging
General Cardiovascular Magnetic Resonance Imaging
1. Anatomic and functional cardiovascular magnetic resonance imaging
(CMR) requires:
A. Ability to perform long breath-holds (>15 s)
B. Weight <100 kg (220 lbs)
C. Sinus rhythm
D. Absence of coronary stents
E. Claustrophobia management
General Cardiovascular Magnetic Resonance Imaging
2. In comparing CMR with other noninvasive imaging modalities, which of
the following statements is correct?
A. The exposure to ionizing radiation with CMR is more than with a single chest
X-ray, but considerably less than that of a chest computed tomography (CT) scan
B. The exposure to ionizing radiation with CMR is more than with a Tc-99 m
myocardial perfusion single-photon emission computed tomography (SPECT)
study, but considerably less than that of a TL-201 planar study
C. Because of high spatial and temporal resolution, CMR is better than echocardiography for evaluation of small and highly mobile structures
D. Because of the ability to perform volumetric imaging with high spatial and
temporal resolution, CMR is the “gold standard” for measurement of ventricular volumes, mass, and ejection fraction
E. Coronary calcium detection is much better with CMR than with a multidetector CT (MDCT) scan
echocardiography in assessing aortic valvular insufficiency
4. For which of the following applications CMR is not the gold standard?
A. Evaluation of anomalous coronary arteries
B. Assessment of infarcted myocardium
C. Measurement of left ventricular ejection fraction
D. Measurement of right ventricular end-diastolic volume
E. Assessment of coronary atherosclerosis
General Cardiovascular Magnetic Resonance Imaging
22 Cardiovascular MRI: 150 Multiple-Choice Questions and Answers
5. In a patient with atrial fibrillation and wide variability of the RR interval,
who is undergoing CMR, which of the following statements is correct?
A. The left ventricular ejection fraction cannot be measured
B. The measured left ventricular ejection fraction grossly overestimates the
systolic performance
C. The measured left ventricular ejection fraction correlates well with invasively
measured values
D. The left ventricular mass cannot be measured
E. The myocardial viability cannot be assessed
6. Which of the following patients should not be assessed with CMR?
A. A 46-year-old patient with severe congestive heart failure, orthopnea, tachycardia, and low oxygen saturation (89% on a 100% O2
face mask)
B. A 70-year-old patient with moderately severe aortic regurgitation, considered
for aortic valve surgery
C. A 10-year-old patient with coarctation managed with an aortic stent 2 years ago
2 General Cardiovascular Magnetic Resonance Imaging 23
D. A woman with exertional syncope
E. A patient with coronary artery disease and severe left ventricular systolic dysfunction (ejection fraction 20%) who is being considered for revascularization
7. A 25-year-old patient is referred for CMR. As soon as he is placed in the scanner, he becomes diaphoretic, his pulse increases to 160 beats per minute, and he
complains of nausea and lightheadedness. The most appropriate approach
would be to:
A. First place a peripheral intravenous line and then proceed with the study as
planned
B. Administer a mild sedative (e.g., a short acting benzodiazepine) orally, place
nasal prongs for supplemental oxygen, and then proceed with the study
C. Stop the study. Administer oxygen via nasal cannula and immediately obtain
a medical evaluation of the patient and, if needed, a 12-lead ECG
D. Stop the study. Discharge the patient to home with instructions to contact his
physician
E. Ask the patient if he is willing to proceed with the study, and if the patient
agrees, proceed as planned
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