Real-time estimation of dose reduction for pediatric CT using bismuth shielding

Nan Ku Lai; Ying Lan Liao; Tuo Rong Chen; Yu Sheng Tyan; Hui Yu Tsai

doi:10.1016/j.radmeas.2011.09.010

Real-time estimation of dose reduction for pediatric CT using bismuth shielding

Nan Ku Lai, Ying Lan Liao, Tuo Rong Chen, Yu Sheng Tyan, Hui Yu Tsai^*

^*Corresponding author for this work

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

8 Scopus citations

Abstract

The purpose of this study is to estimate the dose reduction of bismuth shielding for pediatric CT using a real-time CT dose probe. Routine CT examinations of head, chest and abdomen were performed on a 10-year pediatric anthropomorphic phantom, with and without bismuth shield. A solid-state dosimeter was used to obtain real-time dose measurements and to estimate the dose reduction. The maximum dose reduction of eyes using bismuth shield for in-plane CT scanning can achieve 56% during spiral head scanning interval. The average dose reduction is around 25% for in-plane CT scanning, and reaches 62% combining the technique of automatic tube current modulation. The solid-state probe can provide fast and convenient measurements for dose estimation of superficial organs. It is suggested to use Bismuth shielding in routine CT examinations to protect the radiosensitive tissues.

Original language	English
Pages (from-to)	2039-2043
Number of pages	5
Journal	Radiation Measurements
Volume	46
Issue number	12
DOIs	https://doi.org/10.1016/j.radmeas.2011.09.010
State	Published - 12 2011
Externally published	Yes

Keywords

Bismuth shielding
Pediatric CT imaging
Radiosensitive organ/tissue
Real-time dose measurement

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10.1016/j.radmeas.2011.09.010

Cite this

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title = "Real-time estimation of dose reduction for pediatric CT using bismuth shielding",

abstract = "The purpose of this study is to estimate the dose reduction of bismuth shielding for pediatric CT using a real-time CT dose probe. Routine CT examinations of head, chest and abdomen were performed on a 10-year pediatric anthropomorphic phantom, with and without bismuth shield. A solid-state dosimeter was used to obtain real-time dose measurements and to estimate the dose reduction. The maximum dose reduction of eyes using bismuth shield for in-plane CT scanning can achieve 56% during spiral head scanning interval. The average dose reduction is around 25% for in-plane CT scanning, and reaches 62% combining the technique of automatic tube current modulation. The solid-state probe can provide fast and convenient measurements for dose estimation of superficial organs. It is suggested to use Bismuth shielding in routine CT examinations to protect the radiosensitive tissues.",

keywords = "Bismuth shielding, Pediatric CT imaging, Radiosensitive organ/tissue, Real-time dose measurement",

author = "Lai, {Nan Ku} and Liao, {Ying Lan} and Chen, {Tuo Rong} and Tyan, {Yu Sheng} and Tsai, {Hui Yu}",

year = "2011",

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doi = "10.1016/j.radmeas.2011.09.010",

language = "英语",

volume = "46",

pages = "2039--2043",

journal = "Radiation Measurements",

issn = "1350-4487",

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TY - JOUR

T1 - Real-time estimation of dose reduction for pediatric CT using bismuth shielding

AU - Lai, Nan Ku

AU - Liao, Ying Lan

AU - Chen, Tuo Rong

AU - Tyan, Yu Sheng

AU - Tsai, Hui Yu

PY - 2011/12

Y1 - 2011/12

N2 - The purpose of this study is to estimate the dose reduction of bismuth shielding for pediatric CT using a real-time CT dose probe. Routine CT examinations of head, chest and abdomen were performed on a 10-year pediatric anthropomorphic phantom, with and without bismuth shield. A solid-state dosimeter was used to obtain real-time dose measurements and to estimate the dose reduction. The maximum dose reduction of eyes using bismuth shield for in-plane CT scanning can achieve 56% during spiral head scanning interval. The average dose reduction is around 25% for in-plane CT scanning, and reaches 62% combining the technique of automatic tube current modulation. The solid-state probe can provide fast and convenient measurements for dose estimation of superficial organs. It is suggested to use Bismuth shielding in routine CT examinations to protect the radiosensitive tissues.

AB - The purpose of this study is to estimate the dose reduction of bismuth shielding for pediatric CT using a real-time CT dose probe. Routine CT examinations of head, chest and abdomen were performed on a 10-year pediatric anthropomorphic phantom, with and without bismuth shield. A solid-state dosimeter was used to obtain real-time dose measurements and to estimate the dose reduction. The maximum dose reduction of eyes using bismuth shield for in-plane CT scanning can achieve 56% during spiral head scanning interval. The average dose reduction is around 25% for in-plane CT scanning, and reaches 62% combining the technique of automatic tube current modulation. The solid-state probe can provide fast and convenient measurements for dose estimation of superficial organs. It is suggested to use Bismuth shielding in routine CT examinations to protect the radiosensitive tissues.

KW - Bismuth shielding

KW - Pediatric CT imaging

KW - Radiosensitive organ/tissue

KW - Real-time dose measurement

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U2 - 10.1016/j.radmeas.2011.09.010

DO - 10.1016/j.radmeas.2011.09.010

M3 - 文章

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SN - 1350-4487

VL - 46

SP - 2039

EP - 2043

JO - Radiation Measurements

JF - Radiation Measurements

IS - 12

ER -

Real-time estimation of dose reduction for pediatric CT using bismuth shielding

Abstract

Keywords

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