Wensheng ANG, Shuncheng DONG, Yonghuan DU, Peiyi ZHANG, Wanxin WEN. Positioning technique of coded aperture radiation imaging[J]. Journal of Radiation Research and Radiation Processing, 2024, 42(2): 020801
Journals >Journal of Radiation Research and Radiation Processing >Volume 42 >Issue 2 >Page 020801 > Article
- Journal of Radiation Research and Radiation Processing
- Vol. 42, Issue 2, 020801 (2024)
Fig. 1. Nested MURA coding boards
Fig. 2. Collimator thickness determination model
Fig. 3. Architecture simulation of gamma camera detection system
Fig. 4. System response matrix is constructed by Monte Carlo calculation
Fig. 5. Central point source reconstruction of MLEM algorithm with different iterations: (a) iterate once to decode; (b) iterate 10 times to decode; (c) iterate 50 times to decode; (d) iterate 100 times to decode
Fig. 6. Convolutional neural network structure
Fig. 7. Single point source images obtained by different reconstruction algorithm: (a)、(b) δ decode; (c)、(d) fine sampling balanced decoding; (e)、(f) CNN；(g)、(h) MLEM
Fig. 8. Reconstruction effect of different algorithms under multi-point source radiation: (a) δ decode; (b) fine sampling balanced decoding; (c) CNN; (d) MLEM
Fig. 9. Reconstruction of a line source: (a) δ decode; (b) fine sampling balanced decoding; (c) CNN; (d) MLEM
Fig. 10. Reconstruction effect of diamond surface source: (a) δ decode; (b) fine sampling balanced decoding; (c) CNN; (d) MLEM
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