Mibi scan shows diffuse reversible ischemia in keeping with angina?

Heart disease. Angina means chest pain caused by the heart. This usually comes from clogged arteries. As the arteries initially clog, blood can still get around the blockage and is reversible. This can eventually progress to a worsening blockage where blood can't get around it. This usually results in what is known as a heart attack. Reversible is good but it's important to prevent it from getting worse.