Evaluation of a EMCCD detector for emission-transmission computed tomography

Author

Teo, B.K. ; Shestakova, I. ; Sun, M. ; Barber, W.C. ; Hasegawa, B.H. ; Nagarkar, V.V.

Author_Institution

Dept. of Radiol., California Univ., San Francisco, CA

Volume

5

fYear

2005

fDate

23-29 Oct. 2005

Firstpage

3050

Lastpage

3054

Abstract

A prototype electron multiplying charged coupled device (EMCCD) based gamma camera is evaluated for emission-transmission computed tomography. The detector has an 8.2times8.2 mm² active sensor area with a 512times512 pixel array, and can be operated with a 3:1 fiber optic taper to expand the effective imaging area to approximately 25times25 mm² for small animal studies. We demonstrate the possibility of operating the camera in either charge integrating or single photon counting mode for pinhole SPECT with ¹²⁵I and ^99mTc sources. In photon counting mode, we show that energy discrimination can be used to distinguish between these two sources for dual isotope imaging. X-ray CT images of phantoms are taken without a collimator to evaluate the quality of the camera for transmission imaging

Keywords

charge-coupled devices; computerised tomography; electron multiplier detectors; gamma-ray apparatus; photon counting; single photon emission computed tomography; 8.2 mm; EMCCD detector; X-ray CT; dual isotope imaging; electron multiplying charged coupled device based gamma camera; emission-transmission computed tomography; energy discrimination; fiber optic taper; phantoms; photon counting mode; pinhole SPECT; Cameras; Charge-coupled image sensors; Computed tomography; Detectors; Electron emission; Optical arrays; Optical imaging; Prototypes; Sensor arrays; Single photon emission computed tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2005 IEEE

Conference_Location

Fajardo

ISSN

1095-7863

Print_ISBN

0-7803-9221-3

Type

conf

DOI

10.1109/NSSMIC.2005.1596973

Filename

1596973