Current Research on the ARO-Positron Emission Tomography

Abstract

We are presently constructing "AROPET", a rotating PET scanner for imaging small animals. The design of the system has flexible geometry, using four detectors. Each detector is made of a position-sensitive PMTs (Hamamatsu R3941) coupled with 18x16 small individual BGO scintillator crystals of dimension 2.6x2.6x25mm3. Animals can he imaged in two modes. One is similar to a gamma camera in which the detectors are stationary and a 2-D planar projection imaging is obtained. This mode is used for initial characterization of the bio-distribution of tracers. In the other mode the detectors are rotated through 900, and the diameter can be adjusted between 22cm to 40cm. This mode resembles a conventional 3-D PET scan using a partial detector ring. Thirty-one tomographic images can be obtained after rebinning and reconstruction. The field of view is 1.3 mm (transaxial) by 45.6mm (axial). The spatial resolution of the planar projection mode, and the results of the planar image of a phantom and the dynamical images of the bio-distribution of F18-FDG in a mouse are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2000
Accession Number
ADP011356

Entities

People

  • Chuen-shing Shyu
  • Hsing-ching Liang
  • Jiy-shan Tang
  • Meei-ling Jan
  • Shin-wen Huang

Organizations

  • National Atomic Research Institute

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Chemistry
  • Data Acquisition
  • Detection
  • Detectors
  • Diameters
  • Emission
  • Geometry
  • High Voltage
  • Imaging Techniques
  • Instrumentation
  • Measurement
  • Positron Emission Tomography
  • Positron Emissions
  • Positrons
  • Three Dimensional
  • Tomography
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Medical Imaging.
  • Nuclear and Radiation Engineering.