学位論文

疑似逆行列を用いた縦断層イメージングに関する研究

Longitudinal imaging with a pseudo inverse matrix

jpn

2012-03-24

Not Applicable (or Unknown)

2012-03-24

修士(工学)

工学研究科情報電子工学専攻; 指導教授: 尾川浩一

In a conventional x-ray CT, an x-ray tube and detectors rotate around an object to acquire projection data, and cross-sectional images are reconstructed with these projection data. On the other hand, there is a situation in which projection data cannot be acquired with a rotating detector geometry. In this case we acquire projection data in a restricted angular region, and reconstruct cross-sectional images with a dedicated algorithm such as a tomosynthesis technique. This paper proposes a new method that reconstructs cross-sectional images of an object with a pseudo inverse matrix. In this method projection data are acquired with a pinhole collimator by changing the location of the pinhole. The validity of our proposed method was confirmed with the results of simulations.

Thesis