Targeted Nuclear Imaging Probes for Cardiac Amyloidosis

Area of Science:

• Cardiology
• Nuclear Medicine
• Radiology

Background:

• Cardiac amyloidosis diagnosis relies on invasive methods.
• Radionuclide imaging has evolved for cardiac amyloidosis detection.

Purpose of the Study:

• Review advancements in radionuclide molecular imaging for cardiac amyloidosis.
• Highlight imaging's role in diagnosis and prognosis.

Main Methods:

• Review of 99mTechnetium bone scintigraphy.
• Review of 18F and 11C labeled amyloid-binding PET tracers.
• Analysis of repurposed Alzheimer's imaging agents.

Main Results:

• 99mTechnetium bone scintigraphy revived for transthyretin cardiac amyloidosis.
• Amyloid-binding PET tracers effective for light chain and transthyretin cardiac amyloidosis.
• Emerging high accuracy of targeted radionuclide imaging.

Conclusions:

• Targeted radionuclide imaging shows promise in diagnosing cardiac amyloidosis.
• Imaging may soon replace endomyocardial biopsy.
• Further research needed for quantification and therapy guidance.