Radiant energy – Inspection of solids or liquids by charged particles – Analyte supports
Patent
1978-08-24
1981-06-23
Nelms, David C.
Radiant energy
Inspection of solids or liquids by charged particles
Analyte supports
250385, G01N 2100
Patent
active
042753058
ABSTRACT:
An axial tomography system is disclosed which includes an assembly rotatable about an axis extending along a central opening defined therein, and means for positioning the body portion to be examined within the central opening so that the axis of assembly rotation is perpendicular to a plane passing through the bodily structures to be examined. A source of penetrating radiation is mounted on the assembly toward one side thereof and provides radiation in the form of a fan beam. Means are provided for rotating the assembly so that the fan beam impinges upon said body portion at a plurality of incident directions. Detector means for the radiation are positioned on the assembly opposite the source, enabling detection of radiation which traverses laterally and is not absorbed in the thin body section in which the aforementioned plane resides. The detector means is preferably of the ionization type, and may comprise an array of side-by-side mutually insulated strip electrodes, spaced from a common high voltage electrode. The principal axis of each electrode is oriented along a radius extending toward the radiation source, and the ionization space between such strip and the common electrode can be regarded as defining a cell the principal axis of which is similarly oriented. Collimating means overlie the detector means and serve to assure that the radiation incident on each such cell is only that which has passed through an appropriate element of the body portion being examined.
REFERENCES:
patent: 3614437 (1971-10-01), Allemand et al.
patent: 3930162 (1975-12-01), Reiss
patent: 3934142 (1976-01-01), Hounsfield
patent: 3991312 (1976-11-01), Whetten et al.
patent: 4031396 (1977-06-01), Whetten et al.
patent: 4047039 (1977-09-01), Houston
patent: 4047040 (1977-09-01), Houston
patent: 4047041 (1977-09-01), Houston
patent: 4051379 (1977-09-01), Zacher
patent: 4075491 (1978-02-01), Boyd
Racz Janos A.
Seppi Edward J.
Bigelow Dana F.
General Electric Company
Nelms David C.
Stoner Douglas E.
LandOfFree
Tomographic scanning apparatus with ionization detector means does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tomographic scanning apparatus with ionization detector means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tomographic scanning apparatus with ionization detector means will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2210023