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Current Cardiology Reports

The Accuracy of Technetium-99 m Pyrophosphate Imaging in Diagnosing Transthyretin Cardiac Amyloidosis and Its Impact on Patient Management

Published in:
Authors
Zainab Altaha
Robert J. H. Miller
Published in
Current Cardiology Reports | Issue 1/2025

Abstract

Purpose of Review

This review evaluates recent advancements in Technetium-99 m pyrophosphate (99mTc-PYP) imaging for transthyretin amyloid cardiomyopathy (ATTR-CM). We summarize the advantages of single-photon emission computed tomography (SPECT) over planar imaging, the potential impact of quantitative methods, and emerging data for quantifying response to therapy.

Recent Findings

The current literature demonstrates the superior diagnostic accuracy of SPECT compared with planar imaging in 99mTc-PYP studies. Emerging quantitative methods, using hybrid SPECT/CT and artificial intelligence, show promise for enhancing diagnostic precision and risk assessment. Recent studies have also highlighted the potential of 99mTc-PYP quantification for monitoring treatment response.

Summary

99mTc-PYP SPECT imaging has exceptional diagnostic accuracy for ATTR-CM. Quantitative techniques, which can be facilitated by artificial intelligence, improve risk stratification and may aid in treatment monitoring. Future research should focus on clarifying the clinical role and optimal approach for quantification.
Title
The Accuracy of Technetium-99 m Pyrophosphate Imaging in Diagnosing Transthyretin Cardiac Amyloidosis and Its Impact on Patient Management
Authors
Zainab Altaha
Robert J. H. Miller
Publication date
01-12-2025
Publisher
Springer US
Published in
Current Cardiology Reports / Issue 1/2025
Print ISSN: 1523-3782
Electronic ISSN: 1534-3170
DOI
https://doi.org/10.1007/s11886-025-02202-1
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New MRI contrast agents are reshaping diagnostic imaging, promising lower gadolinium exposure amid evolving practice guidelines. How can you optimise contrast selection, dosing, and patient care in this rapidly advancing field?

This content is intended for healthcare professionals outside of the UK.

Independent Medical Education Grant:
  • Bayer HealthCare Pharmaceuticals Inc.
Learn more Link opens in a new window
Image Credits
Abstract graphic of layered, concentric circular shapes in bright green, pink, blue, and purple on a dark blue background. The rings and segments form a complex radial pattern without text/© Springer Health+ IME