In-stent Restenosis and Pericoronary Fat Attenuation Index

Construction and Evaluation of Clinical Prediction Model of In-stent Restenosis After Percutaneous Coronary Intervention by Pericoronary Fat Attenuation Index and Radiomics Characteristics

This study aims to investigate the predictive value of fat attenuation index (FAI) and related radiomics characteristics of pericoronary fat in patients after percutaneous coronary intervention (PCI) for the occurrence of in-stent restenosis (ISR) during the follow-up period (9 to 24 months). The results of this study are expected to provide an early assessment of the inflammation around the coronary lesion segment in patients after PCI, and provide a basis for early targeted intensive drug therapy in clinical practice.

Inclusion Criteria:

• Patients with coronary heart disease who have undergone PCI;
• Patients followed up coronary angiography 9 to 24 months after PCI;
• Patients received chest CT examination during inpatient/outpatient follow-up;

Exclusion Criteria:

• Patients with diseases of the immune system;
• Patients with history of tumor diseases;
• Patients with chronic/acute infectious diseases;
• Image quality is not sufficient for analysis;