期刊文献+

High resolution image reconstruction method for a double-plane PET system with changeable spacing

High resolution image reconstruction method for a double-plane PET system with changeable spacing
原文传递
导出
摘要 Breast-dedicated positroil emission tomography (PET) imaging techniques have been developed ill recent years. Their capacities to detect millimeter-sized breast tumors have been the subject of many studies. Some of them have been confirmed with good results in clinical applications. With regard to biopsy application, a double-plane detector arrangement is practicable, as it offers the convenience of breast immobilization. However, the serious blurring effect of the double-plane PET, with changeable spacing for different breast sizes, should be studied. We investigated a high resolution reconstruction method applicable for a double-plane PET. The distance between the detector planes is changeable. Geometric and blurring components were calculated in real-time for different detector distances, and accurate geometric sensitivity was obtained with a new tube area model. Resolution recovery was achieved by estimating blurring effects derived front simulated single gamma response information. The results showed that tile new geometric modeling gave a more finite and smooth sensitivity weight in the double-plane PET. The blurri,lg component yielded contr^ust recovery levels that could not be reached without blurring modeling, and improved visual recovery of the smallest spheres and better delineation of the structures in the reconstructed images were achieved with tile blurring component. Statistical noise had lower variance at tile voxel level with blurring modeling at matched resolution, compared to without blurring modeling. In distance-changeable double-plane PET, finite resolution modeling during reconstruction achieved resolution recovery, without noise amplification. Breast-dedicated positroil emission tomography (PET) imaging techniques have been developed ill recent years. Their capacities to detect millimeter-sized breast tumors have been the subject of many studies. Some of them have been confirmed with good results in clinical applications. With regard to biopsy application, a double-plane detector arrangement is practicable, as it offers the convenience of breast immobilization. However, the serious blurring effect of the double-plane PET, with changeable spacing for different breast sizes, should be studied. We investigated a high resolution reconstruction method applicable for a double-plane PET. The distance between the detector planes is changeable. Geometric and blurring components were calculated in real-time for different detector distances, and accurate geometric sensitivity was obtained with a new tube area model. Resolution recovery was achieved by estimating blurring effects derived front simulated single gamma response information. The results showed that tile new geometric modeling gave a more finite and smooth sensitivity weight in the double-plane PET. The blurri,lg component yielded contr^ust recovery levels that could not be reached without blurring modeling, and improved visual recovery of the smallest spheres and better delineation of the structures in the reconstructed images were achieved with tile blurring component. Statistical noise had lower variance at tile voxel level with blurring modeling at matched resolution, compared to without blurring modeling. In distance-changeable double-plane PET, finite resolution modeling during reconstruction achieved resolution recovery, without noise amplification.
出处 《Chinese Physics C》 SCIE CAS CSCD 2016年第5期111-120,共10页 中国物理C(英文版)
基金 Supported by Knowledge Innovation Project of The Chinese Academy of Sciences(KJCX2-EW-N06)
关键词 breast PET double-plane PET reconstruction breast PET, double-plane PET, reconstruction
  • 相关文献

参考文献30

  • 1M. C. Abreu, et al, Nuclear Science, IEEE Transactions on, 56(1): 71-77 (2006).
  • 2S. L. Bowen, et al, Journal of Nuclear Medicine, 50(9): 1401- 1408 (2009).
  • 3M. Furuta, et al, Basic evaluation of a C-shaped breast PET scanner, Of the 2009 Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC), 2009.
  • 4P. Lecoq, and J. Varela, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, De- tectors and Associated Equipment, 486(1): 1-6 (2002).
  • 5L. MacDonald, et al, Journal of Nuclear Medicine, 50(10): 1666-1675 (2009).
  • 6R. R. Raylman, et al, Physics in Medicine and Biology, 53(3): 637 (2008).
  • 7C. Thompson, et al, Medical physics, 21(4), 529-538 (1994).
  • 8B. Koolen, et al, Molecular Imaging in Breast Cancer: from whole-body PET/CT to dedicated breast PET, Journal of on- cology, 2012.
  • 9R. R. Raylman et al, Journal of medical imaging and radiation oncology, 55(1): 58-64 (2011).
  • 10M. Iima, et al, Journal of Nuclear Medicine, 53(10): 1534-1542 (2012).

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部