Apparatus for measuring local cerebral blood flow

Details Apparatus for measuring local cerebral blood flow Apparatus for measuring local cerebral blood flow

1987-02-20

1988-12-27

Smith, Ruth S.

Surgery

Truss

Pad

128719, 250303, A61B 600

Patent

active

047933585

ABSTRACT:
A local cerebral blood flow measuring apparatus includes an expiratory tube arranged along a slice within a photography area of a gantry, and a sensor for detecting end of expiration. The expiratory tube includes a chamber for storing only an end tidal air, in synchronism with the end of expiration detected by the sensor. The end tidal air storage chamber and a subject to be examined are scanned with X-rays from the gantry, in synchronism with the end tidal air. The tracer concentration of the end tidal air storage chamber is measured by means of data derived from the gantry.

REFERENCES:
patent: 3769966 (1973-11-01), Youdin et al.
patent: 3976050 (1976-08-01), Glasser et al.
patent: 4233842 (1980-11-01), Raemer et al.
patent: 4535780 (1985-08-01), Gur et al.
Seylaz et al., "Analytical Problems Associated with the Noninvasive Measurements of Cerebral Blood Flow in Cerebrovascular Diseases" Med & Biol Eng & Comput 1980 pp. 39-47.
Anderson et al., "An Automated Cerebral Blood Flow Analyzer: Concise Communication", Journal of Nuclear Medicine, vol. 18, No. 7, Jul. 1977, pp. 728-731.

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