This site is intended for healthcare professionals

Sign in
Go to /sign-in page

You can view 5 more pages before signing in

Radionucleotide angiography

Authoring team

In radionucleotide angiographic studies, the gamma signal is provided by technetium-99m-labelled erythrocytes.

Labelled erythrocytes are injected intravenously and allowed to mix well with the blood. The heart is then imaged with a gamma-camera. Several hundred cardiac cycles are averaged to provide a clear image of the heart throughout the cycle.

This graphical information allows the calculation of the left ventricular ejection fraction.

The degree of contractility may be assessed qualitatively:

  • post-myocardial infarction there is a permanent focal area of hypokinesia
  • cardiomyopathy results in a global loss of contraction
  • myocardial ischaemia results in temporary focal hypokinesia during exercise stress

Create an account to add page annotations

Create a free account

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.