The Concept of X-Ray CT Dose Evaluation Method Using Radiochromic Film and Film-Folding Phantom

Nobuyoshi Tanki; Toshizo Katsuda; Rumi Gotanda; Tatsuhiro Gotanda; Shinya Imai; Yasuyuki Kawaji; Atsushi Noguchi; Tadao Kuwano; Hideki Fujita; Yoshihiro Takeda

doi:10.1093/rpd/ncab033

The Concept of X-Ray CT Dose Evaluation Method Using Radiochromic Film and Film-Folding Phantom

Nobuyoshi Tanki, Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Shinya Imai, Yasuyuki Kawaji, Atsushi Noguchi, Tadao Kuwano, Hideki Fujita, Yoshihiro Takeda

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

2 Citations (Scopus)

Abstract

In this paper, we propose a novel radiochromic film (RCF)-based computed tomography (CT) dosimetry method, which is different from the method based on CT dose index. RCF dosimetry using Gafchromic QA2 films was performed using two lengths of film-folding phantoms. The phantom was exposed to X-ray CT through a single scan, while the RCF was sandwiched between the phantoms. We analysed the dose profile curve in two directions to investigate the dose distribution. We observed a difference in the dose distribution as the phantom size changed. Our results contradict with the results of previous studies such as Monte Carlo simulation or direct measurement. The ability to visually evaluate 2D dose distributions is an advantage of RCF dosimetry over other methods. This research investigated the ability of 2D X-ray CT dose evaluation using RCF and film-folding phantom.

Original language	English
Pages (from-to)	96-104
Number of pages	9
Journal	Radiation Protection Dosimetry
Volume	193
Issue number	2
DOIs	https://doi.org/10.1093/rpd/ncab033
Publication status	Published - Jan 1 2021

ASJC Scopus subject areas

Radiological and Ultrasound Technology
Radiation
Radiology Nuclear Medicine and imaging
Public Health, Environmental and Occupational Health

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1093/rpd/ncab033

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title = "The Concept of X-Ray CT Dose Evaluation Method Using Radiochromic Film and Film-Folding Phantom",

abstract = "In this paper, we propose a novel radiochromic film (RCF)-based computed tomography (CT) dosimetry method, which is different from the method based on CT dose index. RCF dosimetry using Gafchromic QA2 films was performed using two lengths of film-folding phantoms. The phantom was exposed to X-ray CT through a single scan, while the RCF was sandwiched between the phantoms. We analysed the dose profile curve in two directions to investigate the dose distribution. We observed a difference in the dose distribution as the phantom size changed. Our results contradict with the results of previous studies such as Monte Carlo simulation or direct measurement. The ability to visually evaluate 2D dose distributions is an advantage of RCF dosimetry over other methods. This research investigated the ability of 2D X-ray CT dose evaluation using RCF and film-folding phantom.",

author = "Nobuyoshi Tanki and Toshizo Katsuda and Rumi Gotanda and Tatsuhiro Gotanda and Shinya Imai and Yasuyuki Kawaji and Atsushi Noguchi and Tadao Kuwano and Hideki Fujita and Yoshihiro Takeda",

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AU - Tanki, Nobuyoshi

AU - Katsuda, Toshizo

AU - Gotanda, Rumi

AU - Gotanda, Tatsuhiro

AU - Imai, Shinya

AU - Kawaji, Yasuyuki

AU - Noguchi, Atsushi

AU - Kuwano, Tadao

AU - Fujita, Hideki

AU - Takeda, Yoshihiro

PY - 2021/1/1

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N2 - In this paper, we propose a novel radiochromic film (RCF)-based computed tomography (CT) dosimetry method, which is different from the method based on CT dose index. RCF dosimetry using Gafchromic QA2 films was performed using two lengths of film-folding phantoms. The phantom was exposed to X-ray CT through a single scan, while the RCF was sandwiched between the phantoms. We analysed the dose profile curve in two directions to investigate the dose distribution. We observed a difference in the dose distribution as the phantom size changed. Our results contradict with the results of previous studies such as Monte Carlo simulation or direct measurement. The ability to visually evaluate 2D dose distributions is an advantage of RCF dosimetry over other methods. This research investigated the ability of 2D X-ray CT dose evaluation using RCF and film-folding phantom.

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The Concept of X-Ray CT Dose Evaluation Method Using Radiochromic Film and Film-Folding Phantom

Abstract

ASJC Scopus subject areas

UN SDGs

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