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ß-Blockers for Cardiac CT: A Primer for the Radiologist

¹ The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, MD, and Department of Radiology, Johns Hopkins Outpatient Center, JHOC 3235A, 601 N Caroline St., Baltimore, MD 21287.
² Department of Pharmacy, Johns Hopkins Medical Institutions, Baltimore, MD.

OBJECTIVE. The objective of this article is to describe a protocol for the administration of ß-blockers for cardiac CT. A low and regular heart rate is necessary for optimal visualization of the coronary arteries on CT and can be achieved by the administration of medications.

CONCLUSION. Beta-blockers can be safely given, orally or IV, to most patients to lower the heart rate for cardiac CT. A protocol can be implemented and patients can be screened for certain contraindications to allow successful administration of these medications by radiologists.

Keywords: ß-blocker • cardiac imaging • coronary arteries • CT arteriography • MDCT

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