PET/MR exhibits arterial CO2 as potent vasodilator for cardiac stress testing
Panel A exhibits consultant quick and long-axis PET pictures of peak myocardial uptake of 13N-ammonia throughout hypercapnia of PaCO2 ~ 60 mmHg (CO2), normal scientific dose of adenosine (Adenosine) and at relaxation with PaCO2 ~ 35 mmHg (Relaxation) in a canine with a LAD stenosis. Notice the decrease uptake of the radiotracer within the anterior lateral wall (decrease sign in distal LAD segments, yellow arrows) beneath hypercapnia and adenosine. For the case in panel A, relaxation and stress MBF (beneath hypercapnia and adenosine) and corresponding MPR are proven as polar maps in panel B. These pictures present marked discount in MBF and MPR within the LAD territory, that are visually evident and spatially concordant beneath hypercapnia and adenosine. Credit score: Rohan Dharmakumar. Cedars-Sinai Medical Middle Greater than 5 million cardiac stress exams carried out yearly within the U.S. make use of injectable types of pharmacological stress brokers -- reminiscen...