What does activity in the brain or kidneys imply on a perfusion scan

Sharing is caring!

What does activity in the brain or kidneys imply on a perfusion scan?

Some nuclear medicine departments will image the brain or kidneys to evaluate for a mechanical right-to-left shunt. Because the 99m Tc-MAA is too large to pass through the capillary beds of the lungs, all of the injected material should remain in the lungs unless there is a shunt that bypasses the lungs. Such a shunt is most commonly found in the heart (e.g., an atrial septal defect) or possibly as arteriovenous malformations in the lungs. Although the shunt can be detected on a V/Q scan, it is difficult to adequately assess the location or severity of the shunt, which typically requires additional studies using other structural imaging techniques.

Sharing is caring!

15585

Sign up to receive the trending updates and tons of Health Tips

Join SeekhealthZ and never miss the latest health information

15856
Scroll to Top