Phantom Experimental Study on Patient Doses Obtained from 320-Multidetector-Row Computed Tomography in Whole-Brain Perfusion Scan-Reference-Cited by-同舟云学术

Phantom Experimental Study on Patient Doses Obtained from 320-Multidetector-Row Computed Tomography in Whole-Brain Perfusion Scan

Published:2022-09-19 Issue: Volume: Page:
ISSN:0144-8420
Container-title:Radiation Protection Dosimetry
language:en
Short-container-title:

Author:

Lu Heqing¹²,Meng Ting³^ORCID,You Yang³,Liu Ying³,He Kai⁴²,Kan Yandong⁴²,Zhang Haowei³

Affiliation:

1. Department of Medical Equipment , Shanghai First Maternity and Infant Hospital, School of Medicine, , Shanghai 200092 , China

2. Tongji University , Shanghai First Maternity and Infant Hospital, School of Medicine, , Shanghai 200092 , China

3. School of Health Science and Engineering, University of Shanghai for Science and Technology , Shanghai 200093 , China

4. Department of Logistics Support , Shanghai First Maternity and Infant Hospital, School of Medicine, , Shanghai 200092 , China

Abstract

Abstract This study aimed to precisely evaluate organ dose and effective dose (E) obtained from a 320-multidetector-row computed tomography (CT) scanner in brain perfusion scans and to estimate the conversion factor (k) between E and dose length product (DLP). A total of 270 thermoluminescent dosemeters were implanted in a male anthropomorphic phantom to measure air kerma. The ratios of mass-energy absorption coefficients were used to convert air kerma into organ doses. The organ doses ranged from 0.01 to 150 mGy. Doses in brain, salivary glands and red bone marrow were relatively high, and dose in eye lens reached about 110 mGy. The resulting effective dose was 5.30 mSv. The resulting conversion factor k = (0.0022 ± 0.0002) mSv·(mGy·cm)−1 was not significantly different from that of 0.0021 mSv·(mGy·cm)−1 reported for head CT scan in ICRP Publication 102.

Funder

Planning Project of Shanghai Science and Technology

Standard Pre-development Project Plan

National Natural Science Foundation of China

Publisher

Oxford University Press (OUP)

Subject

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

Link

https://academic.oup.com/rpd/advance-article-pdf/doi/10.1093/rpd/ncac178/45922665/ncac178.pdf

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