13 Sep

Hal Anger invented the positron and single photon multiplane tomographic scanners that have become such important tools for diagnostic cardiac imaging.

Single photon emission tomography (SPECT) allowed us to electronically slice the left ventricle into the short axis, horizontal long and vertical long axis planes in order to evaluate regional perfusion.

This device was capable of rendering static, life-size images of organs which lacked resolution and did not yield quantitative measurements or volumetric data.

Regional myocardial blood flow, metabolism, and innervation may be measured noninvasively in individuals with or at risk of diseases of the heart.

Georg de Hevesy used red blood cells labeled with Phosphorous-32 to measure red blood cell volume, inventing the “tracer principle,” the most fundamental in nuclear medicine.

A major breakthrough was made by Werner Forssmann in Eberswald, Germany in 1929 when the human heart was first catheterized.

In 1936 Paul Hahn used Iron-59 to measure total body hematocrit.