COMPARISON OF RADIATION DOSE AND IMAGE QUALITY IN HEAD CT SCANS AMONG MULTIDETECTOR CT SCANNERS

被引：3

作者：

Abuzaid, Mohamed M. ^{[1
]}

Elshami, Wiam ^{[1
]}

Tekin, H. O. ^{[1
]}

Sulieman, Abdelmoneim ^{[2
]}

Bradley, D. A. ^{[3
,4
]}

机构：

[1] Univ Sharjah, Coll Hlth Sci, Med Diagnost Imaging Dept, Sharjah, U Arab Emirates

[2] Prince Sattam Bin Abdulaziz Univ, Coll Appl Med Sci, Radiol & Med Imaging Dept, Alkharj, Saudi Arabia

[3] Sunway Univ, Ctr Appl Phys & Radiat Technol, Jalan Univ, Pj 46150, Malaysia

[4] Univ Surery, Dept Phys, Guildford GU2 7XH, Surrey, England

来源：

RADIATION PROTECTION DOSIMETRY | 2021年 / 196卷 / 1-2期

关键词：

COMPUTED-TOMOGRAPHY; 64-MDCT; OPTIMIZATION; PROTOCOLS; ADULT;

D O I：

10.1093/rpd/ncab125

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The present study compares three different multidetector CT (MDCT) scanners for routine brain imaging in terms of image quality and radiation doses. The volume CT dose index (CTDIvol), dose-length product (DLP), and effective dose (E) were calculated. Subjective image assessment was obtained based on a scale ranging from 1 (unacceptable) to 5 (optimum). All images scored 3.5 or over, with the 160-slice MDCT images being favoured. For the 4-, 16- and 160-slice MDCT scanners, the respective median values for CTDIvol were 57 mGy, 41 mGy, and 28 mGy; DLP values were 901 mGy.cm, 680 mGy.cm, and 551 mGy.cm; and effective doses were 2 mSv, 1.5 mSv, and 1 mSv, respectively. Compared to the 160-slice MDCT, the dose values for the 4- and 16-slice units were significantly greater. In practice, the CT modality used must be carefully selected to avoid elevated radiation doses and maintain image quality.

引用

页码：10 / 16

页数：7

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