Path-Planning System for Radioisotope Identification Devices Using 4π Gamma Imaging Based on Random Forest Analysis

Hideki Tomita; Shintaro Hara; Atsushi Mukai; Keita Yamagishi; Hidetake Ebi; Kenji Shimazoe; Yusuke Tamura; Hanwool Woo; Hiroyuki Takahashi; Hajime Asama; Fumihiko Ishida; Eiji Takada; Jun Kawarabayashi; Kosuke Tanabe; Kei Kamada

doi:10.3390/s22124325

Path-Planning System for Radioisotope Identification Devices Using 4π Gamma Imaging Based on Random Forest Analysis

Hideki Tomita, Shintaro Hara, Atsushi Mukai, Keita Yamagishi, Hidetake Ebi, Kenji Shimazoe, Yusuke Tamura, Hanwool Woo, Hiroyuki Takahashi, Hajime Asama, Fumihiko Ishida, Eiji Takada, Jun Kawarabayashi, Kosuke Tanabe, Kei Kamada

Research output: Contribution to journal › Article › peer-review

Abstract

We developed a path-planning system for radiation source identification devices using 4π gamma imaging. The estimated source location and activity were calculated by an integrated simulation model by using 4π gamma images at multiple measurement positions. Using these calculated values, a prediction model to estimate the probability of identification at the next measurement position was created by via random forest analysis. The path-planning system based on the prediction model was verified by integrated simulation and experiment for a¹³⁷Cs point source. The results showed that¹³⁷Cs point sources were identified using the few measurement positions suggested by the path-planning system.

Original language	English
Article number	4325
Journal	Sensors
Volume	22
Issue number	12
DOIs	https://doi.org/10.3390/s22124325
Publication status	Published - 2022 Jun 1

Keywords

4π gamma imaging
path planning
radioisotope identification
random forest

ASJC Scopus subject areas

Analytical Chemistry
Information Systems
Biochemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Electrical and Electronic Engineering

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10.3390/s22124325

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Tomita, H., Hara, S., Mukai, A., Yamagishi, K., Ebi, H., Shimazoe, K., Tamura, Y., Woo, H., Takahashi, H., Asama, H., Ishida, F., Takada, E., Kawarabayashi, J., Tanabe, K., & Kamada, K. (2022). Path-Planning System for Radioisotope Identification Devices Using 4π Gamma Imaging Based on Random Forest Analysis. Sensors, 22(12), [4325]. https://doi.org/10.3390/s22124325

@article{a62525b32e4f4d57b7bc14653ff421e9,

title = "Path-Planning System for Radioisotope Identification Devices Using 4π Gamma Imaging Based on Random Forest Analysis",

abstract = "We developed a path-planning system for radiation source identification devices using 4π gamma imaging. The estimated source location and activity were calculated by an integrated simulation model by using 4π gamma images at multiple measurement positions. Using these calculated values, a prediction model to estimate the probability of identification at the next measurement position was created by via random forest analysis. The path-planning system based on the prediction model was verified by integrated simulation and experiment for a137Cs point source. The results showed that137Cs point sources were identified using the few measurement positions suggested by the path-planning system.",

keywords = "4π gamma imaging, path planning, radioisotope identification, random forest",

author = "Hideki Tomita and Shintaro Hara and Atsushi Mukai and Keita Yamagishi and Hidetake Ebi and Kenji Shimazoe and Yusuke Tamura and Hanwool Woo and Hiroyuki Takahashi and Hajime Asama and Fumihiko Ishida and Eiji Takada and Jun Kawarabayashi and Kosuke Tanabe and Kei Kamada",

note = "Funding Information: Funding: This work was supported in part by JSPS KAKENHI: Grant-in-Aid for Scientific Research (A), Grant Number 19H00881. Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2022",

month = jun,

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doi = "10.3390/s22124325",

language = "English",

volume = "22",

journal = "Sensors (Switzerland)",

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T1 - Path-Planning System for Radioisotope Identification Devices Using 4π Gamma Imaging Based on Random Forest Analysis

AU - Tomita, Hideki

AU - Hara, Shintaro

AU - Mukai, Atsushi

AU - Yamagishi, Keita

AU - Ebi, Hidetake

AU - Shimazoe, Kenji

AU - Tamura, Yusuke

AU - Woo, Hanwool

AU - Takahashi, Hiroyuki

AU - Asama, Hajime

AU - Ishida, Fumihiko

AU - Takada, Eiji

AU - Kawarabayashi, Jun

AU - Tanabe, Kosuke

AU - Kamada, Kei

N1 - Funding Information: Funding: This work was supported in part by JSPS KAKENHI: Grant-in-Aid for Scientific Research (A), Grant Number 19H00881. Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2022/6/1

Y1 - 2022/6/1

N2 - We developed a path-planning system for radiation source identification devices using 4π gamma imaging. The estimated source location and activity were calculated by an integrated simulation model by using 4π gamma images at multiple measurement positions. Using these calculated values, a prediction model to estimate the probability of identification at the next measurement position was created by via random forest analysis. The path-planning system based on the prediction model was verified by integrated simulation and experiment for a137Cs point source. The results showed that137Cs point sources were identified using the few measurement positions suggested by the path-planning system.

AB - We developed a path-planning system for radiation source identification devices using 4π gamma imaging. The estimated source location and activity were calculated by an integrated simulation model by using 4π gamma images at multiple measurement positions. Using these calculated values, a prediction model to estimate the probability of identification at the next measurement position was created by via random forest analysis. The path-planning system based on the prediction model was verified by integrated simulation and experiment for a137Cs point source. The results showed that137Cs point sources were identified using the few measurement positions suggested by the path-planning system.

KW - 4π gamma imaging

KW - path planning

KW - radioisotope identification

KW - random forest

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Path-Planning System for Radioisotope Identification Devices Using 4π Gamma Imaging Based on Random Forest Analysis

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