RT Journal Article SR Electronic T1 The Importance of Measurement for Quality Improvement: Submaximal Cardiac Stress Testing JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP jnmt.120.244525 DO 10.2967/jnmt.120.244525 A1 Mary Beth Farrell YR 2020 UL http://tech.snmjournals.org/content/early/2020/04/10/jnmt.120.244525.abstract AB One of the most effective techniques to improve quality is to measure quality. The aim of this article is to defend the importance of quality measurement in nuclear medicine utilizing the long-standing problem of submaximal exercise stress testing. Numerous evidence-based guidelines and research studies establish the importance of maximal stress testing for myocardial perfusion imaging. The three cutoff thresholds that indicate adequate cardiac stress that must all be met include expenditure of five metabolic equivalents (METs) of energy, production of symptoms (e.g., fatigue or shortness of breath), and attainment of 85 percent of the maximum predicted heart rate. Measurement and evaluation of these three criteria along with several other metrics can help to validate one aspect of laboratory quality related to myocardial perfusion imaging accuracy.