17th International Conference on the Use of Computers in Radiation Therapy | |
A comparison of rigid registration methods for prostate localization on CBCT and the dependence on rectum distension | |
物理学;计算机科学 | |
Boydev, C.^1,2 ; Pasquier, D.^3,4 ; Derraz, F.^1,5 ; Peyrodie, L.^6 ; Taleb-Ahmed, A.^1 ; Thiran, J.P.^2,7 | |
Laboratoire d'Automatique, De Mécanique et d'Informatique Industrielles et Humaines (LAMIH), Université de Valenciennes et du Hainaut-Cambrésis, France^1 | |
Signal Processing Laboratory (LTS5), École Polytechnique Fédérale de Lausanne, Switzerland^2 | |
Centre de Radiothérapie et d'Oncologie Galilée de Lille, France^3 | |
Département Universitaire de Radiothérapie, Centre Oscar Lambret, Lille, France^4 | |
Unité de Traitements de Signaux Biomédicaux (UTSB), Faculté Libre de Médecine, Lille, France^5 | |
Unité de Traitements de Signaux Biomédicaux (UTSB), Hautes Études d'Ingénieur, Lille, France^6 | |
Department of Radiology, University Hospital Center (CHUV), University of Lausanne (UNIL), Switzerland^7 | |
关键词: Bony structures; Clinical target volumes; Computed tomography scan; Global registration; Prostate localization; Radiation oncologists; Rigid registration; Similarity coefficients; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/489/1/012025/pdf DOI : 10.1088/1742-6596/489/1/012025 |
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学科分类:计算机科学(综合) | |
来源: IOP | |
【 摘 要 】
We evaluated automatic three-dimensional intensity-based rigid registration (RR) methods for prostate localization on CBCT scans and studied the impact of rectum distension on registration quality. 106 CBCT scans of 9 prostate patients were used. Each one was registered to the planning computed tomography (CT) scan using different methods: (a) global registration, (b) pelvis bony structure registration, (c) bony registration refined by a local prostate registration using the CT clinical target volume (CTV) expanded with 1, 3, 5, 8, 10, 12, 15 or 20-mm margin. Automatic CBCT contours were generated after propagation of the manual CT contours. To evaluate results, a radiation oncologist was asked to manually delineate the CTV on the CBCT scans (gold standard). The Dice similarity coefficients between propagated and manual CBCT contours were calculated.
【 预 览 】
Files | Size | Format | View |
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A comparison of rigid registration methods for prostate localization on CBCT and the dependence on rectum distension | 871KB | download |