Method and means for minimally invasive angiography using mono-c

Details Method and means for minimally invasive angiography using mono-c Method and means for minimally invasive angiography using mono-c

1981-10-14

1984-02-21

Howell, Kyle L.

Surgery

Truss

Pad

A61B 600

Patent

active

044323700

ABSTRACT:
Non-invasive angiography is provided through use of monochromatized synchrotron radiation in a dichromographic procedure. A small quantity of an iodinated compound is introduced into the blood stream of a patient. An X-ray picture of a blood vessel such as the coronary artery can be produced by directing synchrotron radiation from a storage ring source at first and second selected wavelengths or energy levels through the blood vessel, detecting the attenuated radiation to obtain first and second signals representative of the attenuated radiation, and logarithmically subtracting the two signals to essentially eliminate all background contrast. Due to the K-absorption edge of iodine the resulting signal will emphasize the blood vessel containing the iodine.

REFERENCES:
Winick et al., "Synchrotron Radiation Research," Ann. Rev. Nucl. Part. Sci. 1978, 28:33-113.
Houk et al., "Real Time Digital K-Edge Subtraction Fluroscopy," Investigative Radiology, Jul.-Aug. 1979, vol. 14.

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