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US4786810: Solid state counting system for beta and gamma isotopes of all energies

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Filing Information

Inventor(s) Seth D. Shulman · Orren P. Whiddon ·
Assignee(s) Bioscan, Inc. ·
Attorney/Agent(s) Burns, Doane, Swecker & Mathis ·
Primary Examiner Janice A. Howell ·
Assistant Examiner Constantine Hannaher ·
Application Number US6901612
Filing date 08/29/1986
Issue date 11/22/1988
Predicted expiration date 11/22/2005
U.S. Classifications 250/370.01  · 250/328  ·
International Classifications G01T 124  ·
Kind CodeA
International Classifications 250328;364;370 R;432 R;491.1;392;388;370 K;336.1 ·
Related U.S. Application DataRELATED APPLICATIONS
The present aplication is a continuation-in-part application of U.S. patent application Ser. No. 726,247, to Shulman, filed on Apr. 23, 1985, now U.S. Pat. No. 4,682,035.
59 Claims, No Drawings


Abstract

A radiation detection apparatus designed to permit the use of samples of various types and sizes. The apparatus comprises a sample housing fixed to the apparatus and defining a fixed opening adjacent a radiation detection element. Sample containers and sample holders are removably supportable in the sample housing. Sample vials and dry sample containers of different sizes are positionable in said sample holders to provide a sample at a fixed distance from the detection element. Also, a dry sample container and a filter sample holding device usable with the apparatus, are disclosed.

Independent Claims | See all claims (59)

  1. 1. A portable, bench top radiation detection apparatus for quantitative analysis of radio-active samples comprising:a housing having an opening leading to a radiation detecting zone;sample holding means removably mounted in said opening in fixed relation to said radiation detecting zone for receiving a sample container containing a radiation-emitting sample and positioning said sample container to present the sample in fixed relation to said radiation detecting zone;a radiation detector mounted in said radiation detecting zone for detecting radiation emitted by said radiation emitting sample;signal analyzing means responsive to said radiation detector for quantitatively analyzing radiation emitted by said radiation-emitting sample; andmeans responsive to said signal analyzing means or displaying a radiation emission characteristic for said radiation-emitting sample.
  2. 22. A portable, bench top radiation detection apparatus for quantitative analysis of radioactive samples comprising:a housing having an opening leading to a radiation detecting zone;sample holding means removably mounted in said opening in fixed relation to said radiation detecting zone for receiving a radiation-emitting sample and positioning said sample in fixed relation to said radiation detecting zone;a radiation detector mounted in said radiation detecting zone for detecting radiation emitted by said radiation-emitting sample, said radiation detector comprising a solid state diode with an active surface substantially free of any radiation transmission-inhibiting material;signal analyzing means responsive to said radiation detector for quantitatively analyzing radiation emitted by said radiation-emitting sample; andmeans responsive to said signal analyzing means for displaying a radiation emission characteristic for said radiation-emitting sample.
  3. 25. A portable, bench top radiation detection apparatus for quantitative analysis of radioactive samples comprising:a housing having an opening leading to a radiation detecting zone;sample holding means removably mounted in said opening in fixed relation to said radiation detecting zone for receiving a radiation-emitting sample and positioning said sample in fixed relation to said radiation detecting zone;a radiation detector mounted in said radiation detecting zone for detecting radiation emitted by said radiation-emitting sample, said sample holding means includes a sample holder configured to receive a disposable container with a bottom surface having a dried sample thereon, said bottom surface being spaced from and in direct communication with said detector with said container mounted in said sample holder;signal analyzing means responsive to said radiation detector for quantitatively analyzing radiation emitted by said radiation-emitting sample; andmeans responsive to said signal analyzing means for displaying a radiation emission characteristic for said radiation-emitting sample.
  4. 27. A portable, bench top radiation detection apparatus for quantitative analysis of radioactive samples comprising:a housing having an opening leading to a radiation detecting zone;sample holding means removably mounted in said opening in fixed relation to said radiation detecting zone for receiving a radiation-emitting sample and positioning said sample in fixed relation to said radiation detecting zone;a radiation detector mounted in said radiation detecting zone for detecting radiation emitted by said radiation-emitting sample, said radiation detector being responsive to .sup.32 P and .sup.125 I isotope decay emissions;signal analyzing means responsive to said radiation detector for quantitatively analyzing radiation emitted by said radiation-emitting sample; andmeans responsive to said signal analyzing means for displaying a radiation emission characteristic for said radiation-emitting sample.
  5. 28. A sample container for use in a portable, bench top radiation detection apparatus, said sample container comprising:a body portion and a base portion, said base portion being connected to said body portion at one axial end of the body portion, said body portion including a sample receiving surface adapted to support a dried radioactive sample thereon, said sample receiving surface being integral with said body portion at an opposite axial end of the body portion from said base portion and having a concave configuration.
  6. 29. A filter sample holding means for use in a portable bench top radiation detection apparatus, said filter sample holding means comprising:a body portion having a filter mounting surface,a plug means having a pressing means, said plug means being removably inserted in said body means to hold a filter sample on said filter mounting surface, andmeans to properly position said plug means in said body portion to provide said pressing means at said mounting surface.
  7. 31. A method for quantitatively analyzing radiation-emitting samples in a portable, bench top radiation detection apparatus comprising the steps of:inserting a first sample holder having a first sample receiving zone into an opening in the apparatus leading to a radiation detecting zone;inserting a first container containing a first radiation-emitting sample into the first sample receiving zone of the first sample holder;detecting radiation emitted by said first radiation-emitting sample into said radiation detecting zone and generating a first signal responsive to said detected radiation;quantitatively analyzing the radiation emitted by said first sample in response to said first signal;removing said first container and said first sample holder;inserting a second sample holder having a second sample receiving zone into the opening in the apparatus leading to the radiation detecting zone, the second sample receiving zone of the second sample holder being configured to receive a second container different from said first container;inserting into the sample receiving zone of said second sample holder a second container containing a second radiation-emitting sample;detecting radiation emitted by said second radiation-emitting sample into said radiation detecting zone and generating a second signal responsive to said detected radiation;quantitatively analyzing the radiation emitted by said second sample in response to said second signal; anddisplaying a radiation emission characteristic for said second sample.
  8. 41. A method for quantitatively analyzing radiation-emitting samples in a portable, bench top radiation detection apparatus comprising the steps of:(a) inserting a first container containing a known radiation-emitting sample into a sample receiving zone of a first sample holder which positions said first containr relative to a detector of radiation so as to obtain an essentially fixed sample-detector spatial relationship;(b) detecting radiation emitted by said known radiation-emitting sample and generating a signal responsive to said detected radiation;(c) quanttitatively analyzing said radiation emitted by said known radiation-emitting sample with respect to at least one preselected radiation emission characteristic stored in a memory means;(d) removing said first container and inserting a second container containing an unknown radiation-emitting sample into the sample receiving zone of the first sample holder which positions said second container relative to the detector so as to obtain the essentially fixed sample-detector spatial relationship;(e) detecting radiation emitted by said second radiation emitting sample and generating a second signal responsive to said detected radiation;(f) quantitatively analyzing said radiation emitted by said second radiation-emitting sample with respect to said at least one pre-selected radiation emission characteristic;(g) displaying a radiation emission characteristic for said second radiation-emitting sample;(h) removing said second container and said first sample holder;(i) inserting a second sample holder having a sample receiving zone into said apparatus; and(j) repeating steps (a) through (g) for third and fourth samples in third and fourth containers, respectively.
  9. 46. A portable, bench top radiation detection apparatus for quantitative analysis of radiation-emitting samples comprising:a substantially light-tight enclosure having an opening into the interior thereof and containing a radiation detector mounted therein;sample holding means removably mounted in said enclosure in fixed relation to the radiation detector for receiving a sample container containing a radiation-emitting sample and positioning said sample container to present the sample in fixed spatial relation to said detector;signal analyzing means responsive to said radiation detector for quantitatively analyzing radiation emitted by said radiation-emitting sample; andmeans responsive to said signal analyzing means for indicating a radiation emission characteristic for said radiation-emitting sample.
  10. 53. A portable, bench top radiation detection apparatus for quantitative analysis of radiation-emitting samples comprising:a substantially light-tight enclosure having an opening into the interior thereof and containing a radiation detector mounted therein, said radiation detector comprising a solid state diode with an active surface substantially free of any radiation transmission-inhibiting material;sample holding means removably mounted in said enclosure in fixed relation to the radiation detector for receiving a radiation-emitting sample and positioning said sample in fixed spatial relation to said detector;signal analyzing means responsive to said radiation detector for quantitatively analyzing radiation emitted by said radiation-emitting sample; andmeans responsive to said signal analyzing means for indicating a radiation emission characteristic for said radiation emitting sample.
  11. 56. A portable, bench top radiation detection apparatus for quantitative analysis of radiation-emitting samples comprising:a substantially light-tight enclosure having an opening into the interior thereof and containing a radiation detector mounted therein;sample holding means removably mounted in said enclosure in fixed relation to the radiation detector for receiving a radiation-emitting sample and positioning said sample in fixed spatial relation to said detector, said sample holding means comprising a sample holder configured to receive a disposable container with a bottom surface having a dried sample thereon, said bottom surface being spaced from and in direct communication with said detector with said container mounted in said sample holder;signal analyzing means responsive to said radiation detector for quantitatively analyzing radiation emitted by said radiation-emitting sample; andmeans responsive to said signal analyzing means for indicating a radiation emission characteristic for said radiation-emitting sample.
  12. 58. A portable, bench top radiation detection apparatus for quantitative analysis of radiation-emitting samples comprising:a substantially light-tight enclosure having an opening into the interior thereof and containing a radiation detector mounted therein, said radiation detector being responsive to .sup.32 P and .sup.125 I isotope decay emissions;sample holding means removably mounted in said enclosure in fixed relation to the radiation detector for receiving a radiation-emitting sample and positioning said sample in fixed spatial relation to said detector;signal analyzing means responsive to said radiation detector for quantitatively analyzing radiation emitted by said radiation-emitting sample; andmeans responsive to said signal analyzing means for indicating a radiation emission characteristic for said radiation-emitting sample.
  13. 59.59. A portable, bench top radiation detection apparatus for quantitative analysis of radioactive samples contained in containers of differing types, comprising:a housing having a housing opening leading to a radiation detecting zone;a radiation detector mounted in said radiation detecting zone for detecting radiation emitted by radioactive samples;a sample holder removably mounted in said housing opening in fixed relation to said radiation detecting zone, said sample holder having a holder opening;a sample container dimensioned to be received and supported in said holder opening so as to be positioned in fixed relation to the radiation detector.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3898460 BICRON CORP Noakes et al. Aug 1975
US4021670 NOAKES JOHN E Noakes May 1977
US4482522 VEB Kombinat Medizin- und Labortechnik Leipzig Baudisch et al. Nov 1984
US4682035 Bioscan, Inc. Shulman Jul 1987

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