Heart attack. Axial computed tomography (CT) scan through the chest of a 68-year-old woman who is obese and has high blood pressure (hypertension) and radiating pain in the chest, with the diagnosis being a heart attack (myocardial infarction). This is indicated by the absence of enhancement of the septal and anterior walls of the ventricular myocardium (upper right). This image was obtained using an injection of iodine as a contrast medium.