Ultrahigh-resolution small-animal imaging using a silicon detector

Author

Peterson, Todd E. ; Wilson, Donald W. ; Barrett, Harrison H.

Author_Institution

Dept. of Radiol. & Radiol., Vanderbilt Univ., Nashville, TN, USA

Volume

3

fYear

2003

fDate

19-25 Oct. 2003

Firstpage

1984

Abstract

We have developed a prototype ultrahigh-resolution small-animal imaging system that utilizes a silicon detector with a multiple-pinhole aperture. This system is suitable for imaging low-energy photons such as those from I-125 decay (27.2-35.5 keV) or the X-rays from I-123 decay (27.2-31.8 keV). The silicon detector is a double-sided strip detector of 300-micrometer thickness and 50-micrometer strip pitch, with 560 strips on one side and 1260 strips on the other. The readout utilizes VaTaGP2.2 ASICs from IDEAS ASA, Norway. When the detector is coupled with a multiple-pinhole aperture and operated in a synthetic-collimator configuration it should be possible to do tomographic image reconstructions without rotation of either the object or imager.

Keywords

X-ray detection; image reconstruction; image resolution; medical image processing; position sensitive particle detectors; silicon radiation detectors; single photon emission computed tomography; 27.2 to 35.5 keV; 300 mum; 50 mum; I-123 decay; I-125 decay; IDEAS ASA; Norway; VaTaGP2.2 ASICs; X-rays; double-sided strip detector; low-energy photon imaging; multiple-pinhole aperture; silicon detector; synthetic-collimator configuration; tomographic image reconstructions; ultrahigh-resolution small-animal imaging; Apertures; Detectors; Image reconstruction; Object detection; Optical imaging; Prototypes; Silicon; Strips; Tomography; X-rays;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2003 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8257-9

Type

conf

DOI

10.1109/NSSMIC.2003.1352269

Filename

1352269