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Proceedings Paper

Imaging the nano-structure of soft and wet materials with new type of DLS methods
Author(s): Kazuyuki Sakai; Yuta Watanabe; Hiroaki Kumagai; Mei Abe; Masaru Kawakami; Hidemitsu Furukawa
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Paper Abstract

Nano-structure of soft and wet materials are making important roles in radiation therapy, as a three-dimensional (3D) gel dosimeter. In the last decades, radiation therapy instruments have had a large progressive of the accuracy, therefore more precise measurements have became important. We study new materials and apparatus, which measure three dimensional absorbed dose distributions. New materials are double network (DN2) gel and improved PAGAT (yDAGAT) gel, the former has several good points, high transparency, high water content, high mechanical strength, and toughness, the later has similar properties of PAGAT gel but will be more tractable. The new type of optical-CT machine is Scanning Microscopic Light Scattering System (SMILS). Usual optical-CT uses the opacity, which is measured by the intensity, however SMILS also uses dynamic light scattering (DLS) theory with original ensemble average method. By using the intensity and DLS information, more accurate information are expected. We have established one-dimensional measurement by SMILS using irradiated DN gel. Additionally, yDAGAT is successfully composed. In the future, we are planning to develop three-dimensional radiation measurement apparatus by 3D printable gel and 3D SMILS.

Paper Details

Date Published: 16 April 2016
PDF: 6 pages
Proc. SPIE 9802, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2016, 98020S (16 April 2016); doi: 10.1117/12.2219858
Show Author Affiliations
Kazuyuki Sakai, Yamagata Univ. (Japan)
Yuta Watanabe, Yamagata Univ. (Japan)
Hiroaki Kumagai, Yamagata Univ. (Japan)
Mei Abe, Yamagata Univ. (Japan)
Masaru Kawakami, Yamagata Univ. (Japan)
Hidemitsu Furukawa, Yamagata Univ. (Japan)

Published in SPIE Proceedings Vol. 9802:
Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2016
Vijay K. Varadan, Editor(s)

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