This pilot study is looking at a new way to measure blood flow in the heart for people with coronary artery disease (CAD). You would breathe different combinations of carbon dioxide and oxygen using a device called RespirAct. Researchers want to see if this method is safe, well-tolerated, and technically possible. To join, you must be an adult over 18 with suspected or known CAD, and your previous heart tests (SPECT/PET or FFR) need to show at least mild to moderate reduced blood flow to your heart. The study will measure changes in your heart's blood flow using MRI scans. The current recruitment status is unclear, and the study aims to enroll 30 participants.

Study design

This is a pilot study involving 30 participants to test a new method. The phase of the study is not specified.

What's involved

You would breathe various combinations of carbon dioxide and oxygen. Your heart's blood flow would be assessed using MRI scans.

Compensation

Not stated in the trial record.

Follow-up

The primary measurements are taken at 3 hours after the intervention.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.