Cardiac ventriculography
Encyclopedia
Cardiac Ventriculography is a medical imaging
test used to determine a patient's cardiac function
in the right, or more typically, left ventricle
. Cardiac ventriculography involves injecting contrast media into the heart's ventricle(s) to measure the volume of blood pumped. Cardiac ventriculography can be performed with a radionuclide
in radionuclide ventriculography or with an iodine-based contrast in cardiac chamber catheterization.
The 3 major measurements obtained by cardiac ventriculography are:
is used to create an image following injection of radioactive material, usually Technetium-99m
(99mTc).
Medical imaging
Medical imaging is the technique and process used to create images of the human body for clinical purposes or medical science...
test used to determine a patient's cardiac function
Cardiology diagnostic tests and procedures
The diagnostic tests in cardiology are methods of identifying heart conditions associated with healthy vs. unhealthy, pathologic, heart function.-History:...
in the right, or more typically, left ventricle
Left ventricle
The left ventricle is one of four chambers in the human heart. It receives oxygenated blood from the left atrium via the mitral valve, and pumps it into the aorta via the aortic valve.-Shape:...
. Cardiac ventriculography involves injecting contrast media into the heart's ventricle(s) to measure the volume of blood pumped. Cardiac ventriculography can be performed with a radionuclide
Radionuclide
A radionuclide is an atom with an unstable nucleus, which is a nucleus characterized by excess energy available to be imparted either to a newly created radiation particle within the nucleus or to an atomic electron. The radionuclide, in this process, undergoes radioactive decay, and emits gamma...
in radionuclide ventriculography or with an iodine-based contrast in cardiac chamber catheterization.
The 3 major measurements obtained by cardiac ventriculography are:
- Ejection Fraction
- Stroke Volume
- Cardiac Output
Radionuclide ventriculography
Radionuclide ventriculography is a form of nuclear imaging, where a gamma cameraGamma camera
A gamma camera, also called a scintillation camera or Anger camera, is a device used to image gamma radiation emitting radioisotopes, a technique known as scintigraphy...
is used to create an image following injection of radioactive material, usually Technetium-99m
Technetium-99m
Technetium-99m is a metastable nuclear isomer of technetium-99, symbolized as 99mTc. The "m" indicates that this is a metastable nuclear isomer, i.e., that its half-life of 6 hours is considerably longer than most nuclear isomers that undergo gamma decay...
(99mTc).
External links
Further reading
- Topol, Eric J. (2000), Cleveland Clinic Heart Book, Hyperion, ISBN 0786864958
- http://healthguide.howstuffworks.com/nuclear-ventriculography-dictionary.htm