Cardiac Imaging Referral Pathways Reshape Patient Identification
Technetium pyrophosphate scintigraphy turned amyloid cardiomyopathy from a biopsy diagnosis into an imaging one, and cardiology departments have been steadily rewiring referral around that. Roughly 41,000 patients now receive bone scintigraphy for suspected cardiac amyloidosis annually across major markets, against a fraction of that number five years ago. The consequence for vutrisiran is that its addressable population expands without any commercial action at all. It also means diagnostic capacity, not prescriber conviction, sets the pace of growth in wild-type disease, and the centres doing this work well are concentrated in a surprisingly small number of hospitals.
Market Impact: Cuts mortality 36% versus placebo








