Application of low radiation dose in combination with low dose contrast medium in CT scans of hepatic lesions

CHEN Wenwen; CHAO Hua; XIAO Tiechen; JING Jing; ZHANG Jin

您当前的位置：

首页 >

文章列表页 >

Application of low radiation dose in combination with low dose contrast medium in CT scans of hepatic lesions

更新时间：2025-12-15

- Application of low radiation dose in combination with low dose contrast medium in CT scans of hepatic lesions
- Vol. 26, Issue 3, Pages: 231-235(2017)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：14 August 2017，
  
  Published：14 August 2017
- 稿件说明：
移动端阅览
陈雯雯,巢华,肖铁臣,等. 低辐射剂量结合低对比剂用量在肝脏占位CT扫描中的应用研究[J]. 肿瘤影像学, 2017, 26(3): 231-235
DOI：

陈雯雯,巢华,肖铁臣,等. 低辐射剂量结合低对比剂用量在肝脏占位CT扫描中的应用研究[J]. 肿瘤影像学, 2017, 26(3): 231-235 DOI：

摘要

目的：

探讨三维自适应迭代剂量降低(adaptive iterative dose reduction 3D，AIDR 3D)迭代重建技术结合低对比剂用量在肝脏病灶扫描中的应用。

方法：

前瞻性地将60例肝脏占位患者随机分为两组，每组30例，A组(常规组)采用滤过反投影(filtered back projection，FBP)重建+常规对比剂用量(1.5 mL/kg)，B组(双低剂量组)采用AIDR 3D重建+低对比剂用量(1.0 mL/kg)。对两组图像主观噪声、总体质量及是否达到诊断要求，按1~5分(1分最差，5分最优)予以评分。定量计算两组图像的有效辐射剂量、图像噪声、信噪比(signal-to-noise ratio，SNR)、对比度噪声比(contrast-tonoise ratio，CNR)。计量资料采用完全随机设计的独立样本t检验及秩和检验，计数资料采用完全随机设计的非参数检验(Mann-Whitney test)。

结果：

B组有效剂量较A组降低约32.1%；主观评估中，B组图像质量评分与A组相似，差异无统计学意义(

0.05)；客观评估中，B组图像噪声低于A组，CNR与SNR高于A组(

0.05)。

结论：

低对比剂剂量结合AIDR 3D重建技术，在降低CT辐射剂量及减少造影剂用量的条件下，仍可得到符合诊断标准的图像。

Abstract

Objective:

To investigate the image quality and radiation dose of adaptive iterative dose reduction 3D (AIDR 3D) iterative reconstruction technique and low dose contrast medium in enhanced CT scans of focal liver lesions.

Methods

: A total of 60 patients underwent hepatic enhanced CT scans were randomly divided into two groups. Group A adopted filtered back projection (FBP) reconstruction and conventional dose contrast medium (1.5 mL/kg)

and group B adopted AIDR 3

D reconstruction and low dose contrast medium (1.0 mL/kg). Qualitative ranking of noise

image quality and whether meet the requirements of diagnosis were graded [a scale of 1-5 (1 worse

5 (best)

]

. The radiation dose

imaging noise

signal-to-noise ratio (SNR)

contrast-tonoise ratio (CNR) were quantitatively measured.

Results:

The effective dose (ED) in group B decreased 32.1% compared to group A. In group B

the score of image quality was similar to group A (

0.05)

the image noise was lower

CNR and SNR were higher compared with group A (

0.05).

Conclusion:

Low dose contrast medium combined with AIDR 3D reconstruction technology can be used for CT scans of the hepatic lesions.

关键词

Keywords

references

Views

1726

下载量

CNKI被引量

Alert me when the article has been cited

提交

Tools

Publicity Resources

An application research on AIDR 3D combined with low tube voltage and low contrast agent dose in enhanced CT scan of upper abdomen

A study on the quality of T2-weighted FatSat images of prostate and its diagnostic value based on deep learning reconstruction technology

Study on the external radiation dosimetry of ¹⁷⁷ Lu-DOTATATE in the treatment of GEP-NEN

A study on the correlation between breast lump, breast density and radiation dose in mammography

A discussion of unsolved problems in lung cancer screening with low-dose CT

Related Author

QIAN Luyao

JIN Jing

Shijie DONG

Xiaoxin HU

Xiaohang LIU

Tianwen XIE

Bingni ZHOU

Yan HUANG

Related Institution

Department of Radiology, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan University

Department of Pathology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute

Department of Radiology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute

Department of Pathology, Fudan University Shanghai Cancer Center

Department of Radiology, Shanghai East Hospital, Tongji University School of Medicine

AI问答

⁰