Development of low-cost stereographic DSA by used one-directional X-ray for improvement of difference between medical facilities

2008 Fiscal Year Final Research Report

• Project/Area Number: 19591442
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Radiation science
• Research Institution: Kawasaki College of Allied Health Professions
• Principal Investigator: HARAUCHI Hajime Kawasaki College of Allied Health Professions, 放射線技術科, 准教授 (20243256)
• Co-Investigator(Kenkyū-buntansha): KAJIHARA Yasumasa 川崎医療短期大学, 放射線技術科, 教授 (60030912) ; KITAYAMA Akira 川崎医療短期大学, 放射線技術科, 准教授 (50161500) ; ARAO Shinichi 川崎医療短期大学, 放射線技術科, 准教授 (40212609) ; AMNO Takashi 川崎医療短期大学, 放射線技術科, 准教授 (90249558) ; HAYASHI Akiko 川崎医療短期大学, 放射線技術科, 講師 (30300403)
• Project Period (FY): 2007 – 2008
• Keywords: 1方向X線入射解析 / 三次元再構成 / 立体DSA / 回転DSA

Research Abstract

We made a three-dimensional analysis of the blood vessel stream possible using only one-directional X-ray entrance for only blood vessel DSA images using iodine contrast agents. This method reforms the three-dimensional blood vessel stream by enhancing insufficient geometric information due to a one-direction X-ray entrance with contrast agent dilution and time data, analyzing the three-dimensional position of the blood vessel in the area of interest. To improve the accuracy of reformation, this method which reaches the true value by repeating sequential correction calculations, was adopted with the purpose of correcting the influence of X-ray consolidation in the objects. This resulted in extremely high accuracy of the reformation of the three-dimensional blood vessel stream.