The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1987
Filed:
Apr. 23, 1985
Seth D Shulman, Washington, DC (US);
Bioscan, Inc., Washington, DC (US);
Abstract
The disclosure relates to a method and apparatus for quantitatively evaluating radiation emissions of radiolabeled laboratory samples. These radiation emissions frequently include high energy beta and gamma radiation emissions resulting from .sup.32 P isotope decay. High energy beta and gamma radiation is detected by a solid state PIN photodiode and analyzed by a microprocessor to provide an indication of a radiation emission characteristic such as activity expressed in disintegrations per minute (DPM). An indication of sample activity is obtained from a detected sample count rate adjusted by a detector calibration constant which is determined by the microprocessor from a reference radiation emitting sample of known activity and volume. Indications of radiation emission characteristics may be displayed by an alpha-numeric liquid crystal display. Hard copy data may be produced from an expansion module in the form of a printer module adapted to receive data input from the microprocessor. Another expansion module, a high performance liquid chromatography (HPLC) flow detector, provides indications of radiation emissions of a sample flow passing through the flow detector. Radiation emission characteristics obtained from the sample flow may be printed by the printer module or displayed by the alpha-numeric liquid crystal display.