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Decreased use was also observed for exercise treadmill testing (2.3% The use of fractional flow reserve by CT per 100 000 Medicare enrollees increased by >16-fold from 2018 (the first year covered) to 2022, and cardiac amyloidosis pyrophosphate scintigraphy studies increased 4-fold from 2011 to 2022 (0.17% to 0.68%).
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