| |
| | Werner Forssmann |
 | | While German physician Werner Forssmann was still an intern, he theorized the basics of cardiac catheterization, whereby a long, very narrow tube (a catheter) is inserted into a vein at the elbow, then advanced through the blood vessel until it reaches the heart. |
 | | After his audacious experiment Forssmann published a paper on his success, suggesting that this technique would allow measurements of blood pressure inside the heart, and could be used to introduce radiopaque dyes, allowing detailed x-rays of the heart that would expose any abnormalities. |
 | | His son, physicist Bernd Forssmann, helped develop the first clinical lithotriptor, a non-invasive device for breaking up gallstones without surgery, which is now used on millions of patients worldwide every year. |
| www.nndb.com /people/706/000129319 (451 words) |
|