Line-scanning proportional counter camera

Journal Article · Tue Apr 01 04:00:00 EDT 1975 · IEEE Trans. Nucl. Sci., v. NS-22, no. 2, pp. 896-900

DOI:https://doi.org/10.1109/TNS.1975.4327767· OSTI ID:4182725

Borkowski, C J; Kopp, M K; Harter, J A

A new method was developed for imaging spatial distributions of photons, charged particles, or neutrons over large areas by a line-scanning camera. This camera uses a linear position-sensitive proportional counter (PSPC) based on resistance-capacitance (RC) position encoding. Applications of this camera include low-dose, medium-resolution radiography of large objects (greater than 2 by 2 m); and, in nuclear medicine, low-dose, whole-body radionuclide imaging and radiography with low energy photons (less than 150 keV). A prototypic camera was built and tested to scan an area of 60 by 100 cm. The spatial resolution is 1 by 1 mm fwhm for radiography with 60-keV photons and 3 by 3 mm fwhm for radionuclide imaging with 50-keV photons (limited by collimator resolution). Compared to point-by-point scanning, the line-scanning method reduces the mechanical complexity of the camera and eliminates problems encountered in construction of large-area, high pressure PSPCs. This method is superior to the area PSPC for imaging objects greater than 60 by 60 cm. (auth)

• Research Organization: Oak Ridge National Lab., TN
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-003057
• OSTI ID: 4182725
• Journal Information: IEEE Trans. Nucl. Sci., v. NS-22, no. 2, pp. 896-900, Journal Name: IEEE Trans. Nucl. Sci., v. NS-22, no. 2, pp. 896-900; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

*RADIOISOTOPE SCANNERS-- OPERATION
440101* --Instrumentation--Radiation Instrumentation-- General Detectors & Monitors
DESIGN
N46110* --Instrumentation--Radiation Detection Instruments-- General Detectors & Monitors
POSITION SENSITIVE DETECTORS
PROPORTIONAL COUNTERS
SPATIAL RESOLUTION