2. 超高速 CT の技術的評価(高速 X 線 CT の現状と臨床評価)

概要

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Imatron C-100 ultrafast CT scanner (UFCT) using electron beam scanning system has been possible millisecond level scanning. The UFCT decreased motion artifacts by body motion and breathing. We indicated reduction of motion artifact by clinical experiment and test with phantoms. We know the result it is suitable for scanning of moving organs, such as the heart. The accuracy of blood flow estimation has improved significantly because high accuracy measurement was possible with high-speed scanning and increasing the sampling/scanning rates. Volume measurement for all cardiac chambers has also become more accurate because whole heart can be scanned by scanning time of 50 msec and malti-slice mode system. On other hand, it seems to improve for complexity of maintenance and operaition of it. Then, we desired to improve for automatic warm-up, simple operation, stability of out put beams, fllnness of software application. We have conducted technical evaluation of the UFCT for its benefits and problems in clinical application.
公益社団法人日本放射線技術学会の論文
1992-01-01