Comparison of NaI(T1), CdTe, and HgI2 surgical probes: effect of scatter compensation on probe performance

Autor:	D P, Kwo, H B, Barber, H H, Barrett, T S, Hickernell, J M, Woolfenden
Rok vydání:	1991
Předmět:	Mercury Compounds Mercury Sodium Iodide Iodides Surgical Instruments Semiconductors Neoplasms Cadmium Compounds Humans Scattering Radiation Scintillation Counting Tellurium Radionuclide Imaging Cadmium
Zdroj:	Medical physics. 18(3)
ISSN:	0094-2405
Popis:	Spatial variation in the background source distribution makes tumor detection difficult for single-detector probes. Using a single energy window that brackets the photopeak helps discriminate against background events dominated by Compton scattering. Another approach is to use the information provided by an additional window in the Compton region. The performances of NaI(T1), CdTe, and HgI2 surgical probes have been compared under realistic simulations of a tumor-staging procedure using optimal single-sided energy windows and a two-window scatter-subtraction technique. Results showed that despite the differences in energy resolution of the detectors, the performances of the probes in a variable background were similar when optimal single energy windows were used. When the background variations were large, using information provided by a second window improved probe performance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid________::7fd12d3fcf479b27f58a9a732f95ee83 https://pubmed.ncbi.nlm.nih.gov/1870479 Zobrazit plný text záznamu Plný text