This method for detecting cardiovascular disease requires a dye to be injected into the coronary arteries followed by a fluoroscope to see where the dye goes and to find blockages.

This method is called Angiography

Angiograms or Angiography is a diagnostic imaging procedure where radioactive Dr is injected into a patient. Usually used when there is a possible blot clot in and artery, the dye is monitored as it activates while moving. It is fairly simple to find an occlusion from there.

Dropping a dry bar of soap on the ground won’t clean it, by it will pick up germs from the ground so the soap would be dirty

Accredited is what i believe it to be