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Optical Coherence Tomography in Cardiac Allograft Vasculopathy: State-of-the-Art Review
Deepak Acharya1, Renzo Y Loyaga-Rendon2, Arka Chatterjee1
1University of Arizona Sarver Heart Center/Banner University Medical Center, Tucson (D.A., A.C., K.L.).
Insights
Optical coherence tomography offers detailed insights into cardiac allograft vasculopathy (CAV), a complication after heart transplants. This imaging technique aids in understanding CAV progression and guiding personalized treatments for better transplant outcomes.
Area of Science:
- Cardiology
- Transplantation Medicine
- Medical Imaging
Background:
- Cardiac allograft vasculopathy (CAV) is a major challenge after heart transplantation.
- Current understanding of CAV pathophysiology and treatment efficacy is limited.
- Standard diagnostic methods like angiography have notable limitations.
Purpose of the Study:
- To review the characteristics and applications of optical coherence tomography (OCT) in managing CAV.
- To highlight OCT's role in understanding CAV as a complex and dynamic process.
- To explore OCT's potential for personalized CAV therapy and improved transplant outcomes.
Main Methods:
- Utilizing optical coherence tomography (OCT) for intravascular imaging.
- Characterizing cardiac allograft vasculature using OCT.
- Serial OCT imaging to monitor disease progression.
- Guiding percutaneous interventions and monitoring therapy response with OCT.
Main Results:
- OCT provides microscopic, catheter-based intravascular imaging.
- OCT reveals CAV as a complex, heterogeneous, and dynamic disease process.
- OCT facilitates detailed vessel characterization and assessment of disease progression.
Conclusions:
- Optical coherence tomography significantly enhances the understanding and management of CAV.
- OCT enables precise guidance for interventions and monitoring of treatment efficacy.
- Personalized assessment and therapy guided by OCT hold promise for improving long-term heart transplant survival.
Abstract:
Cardiac allograft vasculopathy (CAV) is a challenging complication of heart transplantation. CAV pathophysiology is incompletely understood, standard screening modalities such as angiography have significant limitations, and currently available therapies have only modest efficacy in preventing progression. Optical coherence tomography is a light-based technique that provides microscopic level catheter-based intravascular imaging and has dramatically expanded our understanding of CAV, demonstrating it to be a complex, heterogeneous, and dynamic process. This review covers characteristics and uses of optical coherence tomography, including vessel characterization, serial use to assess progression of disease, guiding percutaneous intervention, and monitoring response to CAV therapies. We also discuss the potential of optical coherence tomography in providing individualized assessment and enable customized CAV therapies, which may lead to improvements in long-term transplant outcomes.
