This study is for people with INOCA (ischemia with no obstructive coronary artery disease), which means having chest pain without major blockages in heart arteries. The study will use special tests to look at the heart's small blood vessels and measure how well blood flows through them. This includes coronary angiography (an imaging test to look inside blood vessels) and intravascular imaging (taking pictures of the inside of blood vessels). The Coroventis Coroflow Cardiovascular System will help measure things like blood pressure and temperature in the heart using a special wire, the PressureWire™ X Guidewire. This study aims to enroll 500 people at up to 10 locations in the United States.

• The study does not involve any new treatments; it collects information on heart health.
• Participants need to be available for follow-up evaluations and have no severe heart or kidney issues.
• The study offers no payment, but it helps understand heart conditions better.