Prostate implant reconstruction with discrete tomography

• Published in: Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention Vol. 10; no. Pt 1; p. 734
• Main Authors: Liu, Xiaofeng, Jain, Ameet K, Fichtinger, Gabor
• Format: Journal Article
• Language: English
• Published: Germany 2007
• Subjects: Brachytherapy - instrumentation; Brachytherapy - methods; Humans; Imaging, Three-Dimensional - methods; Male; Prostatic Neoplasms - diagnostic imaging; Prostatic Neoplasms - radiotherapy; Prosthesis Implantation - methods; Radiographic Image Enhancement - methods; Radiographic Image Interpretation, Computer-Assisted - methods
• DOI: 10.1007/978-3-540-75757-3_89

We developed a discrete tomography method for prostate implant reconstructions using only a limited number of X-ray projection images. A 3D voxel volume is reconstructed by back-projection and using distance maps generated from the projection images. The true seed locations are extracted from the voxel volume while false positive seeds are eliminated using a novel optimal geometry coverage model. The attractive feature of our method is that it does not require exact seed segmentation of the X-ray images and it yields near 100% correct reconstruction from only six images with an average reconstruction accuracy of 0.86 mm (std = 0.46mm).