Radiation dose reduction and image quality in pediatric paranasal sinus CT: with automatic tube current modulation and iterative reconstruction technique

被引：0

作者：

Chen, Xiao-Fang ^{[1
]}

Zhang, Yi-Chi ^{[1
]}

Ding, Ning ^{[1
]}

Liu, Li ^{[1
]}

Ji, Yi-Ding ^{[1
]}

Zhang, Chao ^{[2
]}

Chi, Jing ^{[1
]}

机构：

[1] Soochow Univ, Suzhou Peoples Hosp 9, Dept Radiol, 2666 Ludang Rd, Suzhou 215200, Jiangsu, Peoples R China

[2] Soochow Univ, Suzhou Peoples Hosp 9, Dept Anesthesiol, 2666 Ludang Rd, Suzhou 215200, Jiangsu, Peoples R China

来源：

RADIATION PROTECTION DOSIMETRY | 2024年 / 200卷 / 15期

关键词：

MULTIDETECTOR CT; CHILDREN; EXPOSURE;

D O I：

10.1093/rpd/ncae192

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Our objective is to evaluate radiation dose and image quality in pediatric paranasal sinus computed tomography (CT) with automatic tube current modulation (ATCM) and sinogram-affirmed iterative reconstruction algorithm (SAFIRE). CT scans from 80 patients were divided into two groups: Group A [80 kVp, pitch 1.5, 40 mAs, the filtered back projection (FBP) algorithm] and Group B (70 kVp, pitch 3, ATCM with reference at 40 mAs, SAFIRE strengths 1-5). We have evaluated image quality and radiation dose. Group B demonstrated significantly lower volume computed tomography dose index, dose-length product, and effective dose than Group A (0.13 +/- 0.03 vs. 1.57 +/- 0.01 mGy, 2.27 +/- 0.82 vs. 19.88 +/- 2.01 mGy<middle dot>cm, and 0.0081 +/- 0.0017 vs. 0.079 +/- 0.013 mSv, respectively; P < .001). Increasing SAFIRE strengths correlated with noise reduction and SNR enhancement. Group B's noise and SNRsoft at SAFIRE strength 5 were comparable with Group A. Images reconstructed with SAFIRE strength 5 in Group B exhibit comparable image quality with FBP in Group A.

引用

页码：1470 / 1476

页数：7

共 30 条

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