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Dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease

Congenital heart defects (CHD) are the most prevalent birth defects. It is very important to diagnose CHD early and accurately so that patients can get timely and effective treatment. CT scan can accurately evaluate the anatomical structure and major malformations of the cardiac great vessels, th...

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Main Author: Chen, HongYing
Format: Thesis
Language:English
Published: 2022
Subjects:
Tomography Scanners, X-Ray Computed
Heart Defects, Congenital
Online Access:http://psasir.upm.edu.my/id/eprint/103912/1/CHEN%20HONGYING%20-%20IR2.pdf
http://psasir.upm.edu.my/id/eprint/103912/
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spelling my.upm.eprints.1039122023-06-06T03:23:22Z http://psasir.upm.edu.my/id/eprint/103912/ Dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease Chen, HongYing Congenital heart defects (CHD) are the most prevalent birth defects. It is very important to diagnose CHD early and accurately so that patients can get timely and effective treatment. CT scan can accurately evaluate the anatomical structure and major malformations of the cardiac great vessels, the adjacent relationship between the mediastinal organs and tissues from morphology, and quantitatively evaluate cardiac function. However, ionizing radiation is the biggest drawback in CT scanning. This research using a cross-sectional prospective study to investigate the value of Siemens dual-source Somatom Definition Flash CT scanner using CARE Dose4D technique in decreasing radiation dose and ensure image quality in pediatric CHD. There were two groups used Siemens dual-source Somatom Definition Flash CT scanner. The CARE Dose4D group (n=32) with CARE Dose4D technique with automatic modulated tube current and 80 kVp tube voltage, there were patients of angiography pulmonary and thorax CT scanning. Control group (n=42) (Data from previous research: Fan et al.,2020) using the retrospective electrocardiogram (ECG) triggered sequential technique with 100 mAs tube current and 70 kVp tube voltage. The volume CT dose index (CTDIvol) and dose length product (DLP) on each patient was recorded to calculate the effective dose (ED). Calculated image noise signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). All images of 32 pediatric patients in the CARE Dose4D group were clear. The contrast medium density of superior vena cava was moderate, the CT values of all vessels were similar, and the contrast mediums in all atrioventricular and vascular were full, with clear boundaries, no effect on image reconstruction. The CNR values descending aorta of males was lower than females in CARE Dose4D group (P=0.022<0.05). According to the results of this study, we believe that CT examination combined with CARE Dose4D technology can be applied to CHD diagnosis, and the long-term monitoring of radiation dose is more important in practice. The X-ray radiation dose optimization of children and infants still needs in-depth research. 2022-06 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/103912/1/CHEN%20HONGYING%20-%20IR2.pdf Chen, HongYing (2022) Dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease. Masters thesis, Universiti Putra Malaysia. Tomography Scanners, X-Ray Computed Heart Defects, Congenital
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
topic Tomography Scanners, X-Ray Computed
Heart Defects, Congenital
spellingShingle Tomography Scanners, X-Ray Computed
Heart Defects, Congenital
Chen, HongYing
Dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease
description Congenital heart defects (CHD) are the most prevalent birth defects. It is very important to diagnose CHD early and accurately so that patients can get timely and effective treatment. CT scan can accurately evaluate the anatomical structure and major malformations of the cardiac great vessels, the adjacent relationship between the mediastinal organs and tissues from morphology, and quantitatively evaluate cardiac function. However, ionizing radiation is the biggest drawback in CT scanning. This research using a cross-sectional prospective study to investigate the value of Siemens dual-source Somatom Definition Flash CT scanner using CARE Dose4D technique in decreasing radiation dose and ensure image quality in pediatric CHD. There were two groups used Siemens dual-source Somatom Definition Flash CT scanner. The CARE Dose4D group (n=32) with CARE Dose4D technique with automatic modulated tube current and 80 kVp tube voltage, there were patients of angiography pulmonary and thorax CT scanning. Control group (n=42) (Data from previous research: Fan et al.,2020) using the retrospective electrocardiogram (ECG) triggered sequential technique with 100 mAs tube current and 70 kVp tube voltage. The volume CT dose index (CTDIvol) and dose length product (DLP) on each patient was recorded to calculate the effective dose (ED). Calculated image noise signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). All images of 32 pediatric patients in the CARE Dose4D group were clear. The contrast medium density of superior vena cava was moderate, the CT values of all vessels were similar, and the contrast mediums in all atrioventricular and vascular were full, with clear boundaries, no effect on image reconstruction. The CNR values descending aorta of males was lower than females in CARE Dose4D group (P=0.022<0.05). According to the results of this study, we believe that CT examination combined with CARE Dose4D technology can be applied to CHD diagnosis, and the long-term monitoring of radiation dose is more important in practice. The X-ray radiation dose optimization of children and infants still needs in-depth research.
format Thesis
author Chen, HongYing
author_facet Chen, HongYing
author_sort Chen, HongYing
title Dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease
title_short Dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease
title_full Dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease
title_fullStr Dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease
title_full_unstemmed Dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease
title_sort dose reduction using care dose4d technique of siemens dual-source computed tomography on pediatric congenital heart disease
publishDate 2022
url http://psasir.upm.edu.my/id/eprint/103912/1/CHEN%20HONGYING%20-%20IR2.pdf
http://psasir.upm.edu.my/id/eprint/103912/
_version_ 1768009492062011392
score 13.211869

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