Fibrosis Assessment in Myocardial Infarction-associated Ventricular Aneurysm

NCT ID: NCT06994221

Last Updated: 2025-05-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

20 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-11-01

Study Completion Date

2025-12-31

Brief Summary

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The study will use 18F-FAPI PET/CT to study myocardial fibrosis in patients diagnosed with myocardial infarction-associated ventricular aneurysm (MI-VA). Participants will receive the PET/CT scan during hospital stay, as well as serial echocardiography and telephonic follow-ups. Analysed will focus on the characterization of myocardial fibrosis and its correlations with the clinical prognosis in the patients.

Detailed Description

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The aim of this study is to investigate the temporal and spatial distribution of myocardial fibrosis in patients diagnosed with myocardial infarction-associated ventricular aneurysm using the novel fibroblast activation imaging tracer 18F FAPI-42 with PET/CT. This imaging modality allows for non-invasive visualization of activated fibroblasts, which are a key component of myocardial fibrotic remodeling after infarction.

The study is expected to enroll patients diagnosed with ventricular aneurysm secondary to acute myocardial infarction (AMI), who are hospitalized at Renji Hospital, Shanghai Jiao Tong University School of Medicine. The investigators expect to enroll 20 patients diagnosed with MI-VA and 10 AMI patients without evidence of ventricular aneurysm. With written informed consent, the investigators will review past medical records and document the medical history for each participant. During the hospital stay, participants will receive an 18F FAPI-42 PET/CT scan. FAPI uptake in the ventricular aneurysm and remote myocardium will be calculated as maximum standardized uptake value (SUVmax) and mean standardized uptake value (SUVmean). Correlation between SUVmax/SUVmean and critical markers of the disease progression, such as B-type natriuretic peptide (BNP) and cardiac troponin I (cTnI), will be analysed by Pearson or Spearman correlation coefficients. All participants will be followed for 1 year after enrolment, and serial echocardiography and telephonic follow-up will be performed. Major adverse cardiovascular events (MACE) will be recorded throughout the follow-up to reveal any predictive values of 18F-FAPI PET/C-assessed fibrosis for the patients with MI-VA.

Conditions

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Acute Myocardial Infarction Ventricular Aneurysm Following Acute Myocardial Infarction Myocardial Fibrosis

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Acute myocardial infarction-associated ventricular aneurysm

Participants in this group are patients diagnosed with a ventricular aneurysm secondary to acute myocardial infarction (AMI). Diagnosis of AMI is based on clinical presentation, elevated cardiac biomarkers, ECG changes, and coronary angiogram. Ventricular aneurysm is mainly diagnosed by imaging modalities such as echocardiography and cardiovascular magnetic resonance (CMR).

18F FAPI-42 PET/CT scan

Intervention Type DIAGNOSTIC_TEST

During the hospital stay, participants will receive an 18F FAPI-42 PET/CT scan. 18F FAPI-42 is a new fibroblast activation protein (FAP)-specific tracer used for fibrosis imaging. PET/CT will be performed using the ultra-high-resolution digital PET/CT uEXPLORER (United Imaging, Shanghai, China)

Acute myocardial infarction without evidence of ventricular aneurysm

Participants in this group are patients diagnosed with AMI only. Diagnosis of AMI is based on clinical presentation, elevated cardiac biomarkers, ECG changes, and coronary angiogram. Echocardiography or CMR does not identify a ventricular aneurysm.

18F FAPI-42 PET/CT scan

Intervention Type DIAGNOSTIC_TEST

During the hospital stay, participants will receive an 18F FAPI-42 PET/CT scan. 18F FAPI-42 is a new fibroblast activation protein (FAP)-specific tracer used for fibrosis imaging. PET/CT will be performed using the ultra-high-resolution digital PET/CT uEXPLORER (United Imaging, Shanghai, China)

Interventions

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18F FAPI-42 PET/CT scan

During the hospital stay, participants will receive an 18F FAPI-42 PET/CT scan. 18F FAPI-42 is a new fibroblast activation protein (FAP)-specific tracer used for fibrosis imaging. PET/CT will be performed using the ultra-high-resolution digital PET/CT uEXPLORER (United Imaging, Shanghai, China)

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Aged 18-75 years old
* Diagnosed with STEMI or NSTEMI (ACC/AHA guidelines)
* Half male and half female
* Undergo CAG and PCI treatment;
* Receive either echocardiography or CMR to identify a ventricular aneurysm;
* Written informed consent

Exclusion Criteria

* Patients under the age of 18 years old;
* Patients who are pregnant/breastfeeding;
* Patients who has a previous history of allergy to radio tracers.
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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RenJi Hospital

OTHER

Sponsor Role lead

Responsible Party

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Zhiguo Zou

Doctor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Renji Hospital

Shanghai, , China

Site Status RECRUITING

Countries

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China

Central Contacts

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ZHIGUO ZOU, MD, PhD

Role: CONTACT

13524596108

Facility Contacts

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ZHIGUO ZOU, MD, PhD

Role: primary

+86 13524596108

Other Identifiers

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EARLY-MYO FAPI-PET/CT

Identifier Type: -

Identifier Source: org_study_id

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