Preliminary simulation studies on a cylindrical PEM scanner using GATE

Get Citation
YAN Qiang, GAO Juan, SHAN Bao-Ci and WEI Long. Preliminary simulation studies on a cylindrical PEM scanner using GATE[J]. Chinese Physics C, 2010, 34(1): 152-156. doi: 10.1088/1674-1137/34/1/029
YAN Qiang, GAO Juan, SHAN Bao-Ci and WEI Long. Preliminary simulation studies on a cylindrical PEM scanner using GATE[J]. Chinese Physics C, 2010, 34(1): 152-156.  doi: 10.1088/1674-1137/34/1/029 shu
Milestone
Received: 2009-03-02
Revised: 2009-03-17
Article Metric

Article Views(2353)
PDF Downloads(613)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Preliminary simulation studies on a cylindrical PEM scanner using GATE

    Corresponding author: SHAN Bao-Ci,

Abstract: 

In this paper, we investigate the performance of a cylindrical positron emission mammography (PEM) by simulation, in order to estimate its feasibility before implementation. A well-developed simulation package, Geant4 Application for Tomographic Emission (GATE), is used to simulate the scanner geometry and physical processes. The simulated PEM scanner is composed of 64 blocks axially arranged in 4 rings with an axial field-of-view (AFOV) of 12.8 cm and 16.6 cm in diameter. For each block, there is a 16×16 array of 2 mm×2 mm×15 mm lutetium yttrium oxyorthosilicate (LYSO) crystals. In the simulated measurements, the spatial resolution is at the center of the FOV of 1.73±0.07 mm (radial) and 1.81±0.08 mm (tangential), but of 4.83±0.09 mm (radial) and 4.37±0.07 mm (tangential) while 5 cm off the center. The central point source sensitivity (ACS) is 4.04% (1.50 Mcps/mCi) at an energy window of 350-650 keV. Moreover, the capillary and cylindrical sources are simulated coupled to breast phantoms for the scatter fraction (SF) and Noise Equivalent Count Rate (NECR) test. For a breast phantom with a 350-650 keV energy window, SF may reach the highest 32.95%, while NECR is degraded down to the lowest 255.71 kcps/mCi. Finally, we model a breast phantom embedded with two spheres of different activities. The reconstructed image gives good results despite a bit of difference in image contrast. Further, the image quality will be improved by scatter and random correction. All these test results indicate the feasibility of this PEM system for breast cancer detection.

    HTML

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return