Physio-Anatomy Clinical Data Collection Study

Inclusion Criteria:

* Patients \>18 years of age.
* Patients provide written informed consent.
* Clinical presentation consistent with suspected coronary disease.
* Patients who are candidates for PCI and scheduled for coronary diagnostics in the cardiac catheter lab with the intent to perform a physiological assessment for de novo lesions with stenosis, if clinically indicated.

Exclusion Criteria:

* Presence of acute ST Elevation Myocardial Infarction (STEMI) at the time of the cath lab procedure.
* Contraindication for FFR examination or administration of vasodilators.
* Bacteremia or sepsis.
* Major coagulation system abnormalities.
* Severe hemodynamic instability or shock.
* Heart Failure NYHA Class IV.
* Severe valvular heart disease.
* Prior heart transplant.
* Acute renal failure based on diagnostic practice of the treating physician at time of screening.
* Patient is pregnant.
* Patient is currently enrolled in another clinical study that may impact the results of this study.
* Patient has other co-morbid condition(s) that, in the opinion of the Investigator, could limit their