ボリュームマッチングによるX線CT画像とSPECT画像のフレームレス位置合わせ

概要

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The image registration of functional single photon emission computed tomography (SPECT) and morphological (x-ray CT / MRI) images was studied in order to improve the accuracy and quantity of imaging diagnosis. We have developed a new frameless registration method for x-ray CT and SPECT images using transmission CT images acquired for the absorption correction of SPECT images. This is an automated registration method that calculates the transformation matrix between the two coordinate systems of image data by the optimization method. This registration method is based on the similar physical properties of x-ray CT and transmission CT images and can be applied to the chest and abdomen as well as the head. The three-dimensional overlap of bone or body regions is used for image matching. An application study using three sets of patient data suggested that registration accuracy was acceptable for clinical use. The fused images of x-ray CT and SPECT after registration indicated the possibility of improving imaging diagnosis and medical treatment.
公益社団法人日本放射線技術学会の論文
2000-05-20