有造影剂和无造影剂的腹部常规计算机断层扫描图像测得的水当量直径的比较

IF 0.6 Q4 NUCLEAR SCIENCE & TECHNOLOGY

Atom Indonesia Pub Date : 2021-08-09 DOI:10.17146/aij.2021.1112

A. Nitasari, C. Anam, W. Budi, A. L. Wati, S. Syarifudin, G. Dougherty

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引用次数: 2

摘要

正常0 false false false EN-ID JA AR-SA /* Style Definitions */表。mso-style-name:"Table Normal";mso-tstyle-rowband-size: 0;mso-tstyle-colband-size: 0;mso-style-noshow:是的;mso-style-priority: 99;mso-style-parent:“”;Mso-padding-alt:0cm 5.4pt;mso-para-margin: 0厘米;mso-para-margin-bottom: .0001pt;mso-pagination: widow-orphan;字体大小:10.0分;font-family:宋体;尺寸特异性剂量估计(SSDE)是计算机断层扫描(CT)中估计患者剂量的度量。SSDE在很大程度上取决于水当量直径(dw)。在腹部CT检查中，有时使用造影剂更清楚地看到组织病变。在特定区域使用对比剂和未使用对比剂的CT图像的Hounsfield单位(HU)略有不同，可能会影响dw值。本研究旨在比较接受常规腹部扫描的患者在使用和不使用造影剂的情况下的轴向CT图像的dw值。回顾性收集144例体重在3.5 kg至90 kg之间的患者的轴向图像，这些患者使用西门子Sensation 64 CT扫描仪进行常规腹部扫描，同时使用和不使用造影剂。使用基于matlab的IndoseCT(版本15a)软件自动计算dw值。结果表明，dw、对比度与dw、非对比度的百分比差异在2%以下。结果，平均SSDE对比度比非SSDE对比度小1.5%。由于造影剂对dw和SSDE值s的影响小于2%，因此未使用造影剂的CT腹部轴向图像可以作为使用造影剂图像的dw和SSDE的准确估计。正常0 false false false EN-ID JA AR-SA /* Style Definitions */表。mso-style-name:"Table Normal";mso-tstyle-rowband-size: 0;mso-tstyle-colband-size: 0;mso-style-noshow:是的;mso-style-priority: 99;mso-style-parent:“”;Mso-padding-alt:0cm 5.4pt;mso-para-margin: 0厘米;mso-para-margin-bottom: .0001pt;mso-pagination: widow-orphan;字体大小:10.0分;font-family:"Times New Roman"，"serif";mso-ansi-language: EN-ID;mso-fareast-language: en - us;}

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Comparisons of Water-Equivalent Diameter Measured on Images of Abdominal Routine Computed Tomography with and without A Contrast Agent

Normal 0 false false false EN-ID JA AR-SA /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman",serif; mso-ansi-language:EN-ID;} The size-specific dose estimate (SSDE) is a metric for an estimation of patient dose in computed tomography (CT). The SSDE strongly depends on the water-equivalent diameter (D W ). In abdominal CT examinations, a contrast agent is sometimes used to more clearly visualize tissue lesions. The Hounsfield unit (HU) of CT images with and without the use of a contrast agent at specific areas is slightly different and it may affect the D W value. This study aimed to compare the D W values calculated from axial CT images in patients who had undergone routine abdominal scans both with and without the use of a contrast agent. Axial images of 144 patients with a weight range of 3.5 kg to 90 kg who had undergone routine abdominal scans both with and without the use of a contrast agent using a Siemens Sensation 64 CT scanner were retrospectively collected. The D W values were automatically calculated using the Matlab-based IndoseCT (version 15a) software. The results show the percentage difference between D W,contrast and D W,non - contrast is below 2 %. As a result, the mean SSDE contrast is 1.5 % smaller than SSDE non - contrast . Due to the effect of a contrast agent on the D W and SSDE value s is below 2 %, the axial images of CT abdomen without the use of a contrast agent can be used as the accurate estimation of D W and SSDE for images with the use of a contrast agent. Normal 0 false false false EN-ID JA AR-SA /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif"; mso-ansi-language:EN-ID; mso-fareast-language:EN-US;}

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来源期刊

Atom Indonesia NUCLEAR SCIENCE & TECHNOLOGY-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： The focus of Atom Indonesia is research and development in nuclear science and technology. The scope of this journal covers experimental and analytical research in nuclear science and technology. The topics include nuclear physics, reactor physics, radioactive waste, fuel element, radioisotopes, radiopharmacy, radiation, and neutron scattering, as well as their utilization in agriculture, industry, health, environment, energy, material science and technology, and related fields.