Right-to-left shunting via persistent left superior vena cava identified by perfusion lung scintigraphy.
A right-to-left shunt was demonstrated following a left antecubital injection of [99mTc]MAA but was not seen after a right antecubital injection. This was because of the presence of a persistent left superior vena cava draining into the left atrium. Recognition of the presence of this anatomic variant is of importance in perfusion imaging, in patients with otherwise unexplained systemic embolization.
Published In/Presented At
Rosenbaum, R. C., Reiner, B. I., Bidwell, J. K., & Johnston, G. S. (1989). Right-to-left shunting via persistent left superior vena cava identified by perfusion lung scintigraphy. Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 30(3), 412–414.
Diagnosis | Medicine and Health Sciences | Other Analytical, Diagnostic and Therapeutic Techniques and Equipment | Radiology
Department of Radiology and Diagnostic Medical Imaging