Emerging PET Tracers in Cardiac Molecular Imaging

Area of Science:

• Cardiovascular Imaging
• Nuclear Medicine
• Molecular Imaging

Background:

• ¹⁸F-fluorodeoxyglucose (FDG) and ¹⁸F-sodium fluoride (NaF) are emerging PET tracers for atherosclerosis.
• FDG assesses myocardial viability and cardiac sarcoidosis.
• PET techniques can characterize early atherogenesis.

Purpose of the Study:

• To review the evolving roles of FDG, NaF, and other PET tracers in cardiac molecular imaging.
• To compare the utility of FDG and NaF in assessing atherosclerosis.

Main Methods:

• Review of current literature on PET tracers in cardiac imaging.
• Discussion of FDG's role in myocardial viability and sarcoidosis.
• Analysis of NaF's role in molecular calcification and coronary artery disease.

Main Results:

• ¹⁸F-sodium fluoride (NaF)-PET/CT is superior to FDG-PET/CT for monitoring atherosclerosis progression via micro-calcification.
• NaF-PET/CT can identify coronary artery disease uptake obscured by physiologic myocardial activity on FDG-PET/CT.
• FDG remains valuable for myocardial viability and cardiac sarcoidosis.

Conclusions:

• NaF-PET/CT offers advantages over FDG-PET/CT for evaluating atherosclerosis.
• PET tracers are crucial for early detection and characterization of cardiovascular disease.
• Continued research into PET tracers will enhance cardiac molecular imaging.