With the ability to ascertain data on the blood flow to vital organs such as the heart and the brain, doctors are able to make quicker and more accurate choices on treatment for patients. Nuclear medicine has been leading<unk>  for some time, although the modality has certain pitfalls. It is often dubbed 'unclear medicine' as the scans produced may appear to the untrained eye as just fluffy and irregular patterns. More recent developments in CT and MRI have meant clearer images and solid data, such as graphs depicting blood flow, and blood volume charted over a fixed period of time.
Perfusion scanning
Intravascular fluorescence
Perfusion MRI
Cerebral angiography
Microangiography
Functional near-infrared spectroscopy
Carbon dioxide angiography
Angiography