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ARTICLE |

Symposium On Scanning

JAMA. 1966;198(11):44-46. doi:10.1001/jama.1966.03110240018011.
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ABSTRACT

A new short-lived isotope — "milked" from a "cow" of tin —is being used experimentally and clinically for lung, liver, and blood pool scanning.

A "cow," in the jargon of nuclear medicine, is a device generating ( milking) a new nuclide from the decay products of a more stable one. Latest of the herd is an isotope of indium (113mIn), derived from radioactive tin (113Sn).

Two speakers at a symposium on scanning touched on apparent advantages of113mIn, developed and first used at Johns Hopkins and being investigated at Syracuse, Chicago, and Northwestern Universities, among others.

About 90% of the administered dose concentrates in the lung when the isotope is given in an iron hydroxide solution, intravenously. For liver scans,113mIn is given as a colloid; it is bound to the patient's own beta globulin for placental and cardiac scanning.

Half-life of the isotope is only 1.7

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