The algorithm used by Mayo Clinic physicians in Florida for pharmacologic heart rate control. (A) At enrollment. (B) Immediately before scan. BPM, beats per minute; CI, contraindication. (Reprinted with permission from ref. Gerber TC, Kuzo RS, Lane GE, et al. Image quality in a standardized algorithm for minimally invasive coronary angiography with multislice spiral computed tomography. J Comput Assist Tomogr 2003;27:62–9.)