Development of an RI imaging method for observing the dynamic of X ray tracer in an intracellular by the resolution of a micron

2014 Fiscal Year Final Research Report

• Project/Area Number: 23246167
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Tohoku University
• Principal Investigator: ISHII Keizo 東北大学, 工学(系)研究科(研究院), 教授 (00134065)
• Co-Investigator(Kenkyū-buntansha): TERAKAWA Atsuki 東北大学, 工学研究科, 准教授 (10250854) ; MATSUYAMA Shigeo 東北大学, 工学研究科, 准教授 (70219525) ; HITOMI Keitaro 東北大学, 工学研究科, 准教授 (60382660)
• Co-Investigator(Renkei-kenkyūsha): MORI Satoshi 東京大学, 農学生命科学研究科, 名誉教授 (90011915)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: RI imaging / 55Fe tracer / pinhole camera

Outline of Final Research Achievements

Metallic elements such as iron and zinc play an important role in the growth and life activity of plants. It is expected that the in-vivo observation of these metallic elements in plants enables to elucidate their metabolism mechanism at a molecular level and it becomes useful for the selective breeding and the artificial cultivation. We developed a 3D RI imaging system based on the use of RI source emitting only x-rays (X-ray RI source) and the principle of a pinhole camera. We succeeded to perform 3D RI imaging by using a 55Fe source as the X-ray RI source. We applied it to investigate the movement of 55Fe tracer in a sprout of Japanese mustard spinach. We obtained the time change of distribution of 55Fe tracer in the plant and found that the 55Fe accumulation in leaf became remarkable after a period of time after administration of 55Fe.

Free Research Field

原子力学