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Radiation dose and image quality of high-pitch emergency abdominal CT in obese patients using third-generation dual-source CT (DSCT)

In this third-generation dual-source CT (DSCT) study, we retrospectively investigated radiation dose and image quality of portal-venous high-pitch emergency CT in 60 patients (28 female, mean age 56 years) with a body mass index (BMI) ≥ 30 kg/m(2). Patients were dichotomized in groups A (median BMI...

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Autores principales: Forbrig, Robert, Ingrisch, Michael, Stahl, Robert, Winter, Katharina Stella, Reiser, Maximilian, Trumm, Christoph G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6828752/
https://www.ncbi.nlm.nih.gov/pubmed/31685902
http://dx.doi.org/10.1038/s41598-019-52454-5
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author Forbrig, Robert
Ingrisch, Michael
Stahl, Robert
Winter, Katharina Stella
Reiser, Maximilian
Trumm, Christoph G.
author_facet Forbrig, Robert
Ingrisch, Michael
Stahl, Robert
Winter, Katharina Stella
Reiser, Maximilian
Trumm, Christoph G.
author_sort Forbrig, Robert
collection PubMed
description In this third-generation dual-source CT (DSCT) study, we retrospectively investigated radiation dose and image quality of portal-venous high-pitch emergency CT in 60 patients (28 female, mean age 56 years) with a body mass index (BMI) ≥ 30 kg/m(2). Patients were dichotomized in groups A (median BMI 31.5 kg/m(2); n = 33) and B (36.8 kg/m(2); n = 27). Volumetric CT dose index (CTDI(vol)), size-specific dose estimate (SSDE), dose length product (DLP) and effective dose (ED) were assessed. Contrast-to-noise ratio (CNR) and dose-independent figure-of-merit (FOM) CNR were calculated. Subjective image quality was assessed using a five-point scale. Mean values of CTDI(vol), SSDE as well as normalized DLP and ED were 7.6 ± 1.8 mGy, 8.0 ± 1.8 mGy, 304 ± 74 mGy * cm and 5.2 ± 1.3 mSv for group A, and 12.6 ± 3.7 mGy, 11.0 ± 2.6 mGy, 521 ± 157 mGy * cm and 8.9 ± 2.7 mSv for group B (p < 0.001). CNR of the liver and spleen as well as each calculated FOM CNR were significantly higher in group A (p < 0.001). Subjective image quality was good in both groups. In conclusion, third-generation abdominal high-pitch emergency DSCT yields good image quality in obese patients. Radiation dose increases in patients with a BMI > 36.8 kg/m(2).
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spelling pubmed-68287522019-11-12 Radiation dose and image quality of high-pitch emergency abdominal CT in obese patients using third-generation dual-source CT (DSCT) Forbrig, Robert Ingrisch, Michael Stahl, Robert Winter, Katharina Stella Reiser, Maximilian Trumm, Christoph G. Sci Rep Article In this third-generation dual-source CT (DSCT) study, we retrospectively investigated radiation dose and image quality of portal-venous high-pitch emergency CT in 60 patients (28 female, mean age 56 years) with a body mass index (BMI) ≥ 30 kg/m(2). Patients were dichotomized in groups A (median BMI 31.5 kg/m(2); n = 33) and B (36.8 kg/m(2); n = 27). Volumetric CT dose index (CTDI(vol)), size-specific dose estimate (SSDE), dose length product (DLP) and effective dose (ED) were assessed. Contrast-to-noise ratio (CNR) and dose-independent figure-of-merit (FOM) CNR were calculated. Subjective image quality was assessed using a five-point scale. Mean values of CTDI(vol), SSDE as well as normalized DLP and ED were 7.6 ± 1.8 mGy, 8.0 ± 1.8 mGy, 304 ± 74 mGy * cm and 5.2 ± 1.3 mSv for group A, and 12.6 ± 3.7 mGy, 11.0 ± 2.6 mGy, 521 ± 157 mGy * cm and 8.9 ± 2.7 mSv for group B (p < 0.001). CNR of the liver and spleen as well as each calculated FOM CNR were significantly higher in group A (p < 0.001). Subjective image quality was good in both groups. In conclusion, third-generation abdominal high-pitch emergency DSCT yields good image quality in obese patients. Radiation dose increases in patients with a BMI > 36.8 kg/m(2). Nature Publishing Group UK 2019-11-04 /pmc/articles/PMC6828752/ /pubmed/31685902 http://dx.doi.org/10.1038/s41598-019-52454-5 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Forbrig, Robert
Ingrisch, Michael
Stahl, Robert
Winter, Katharina Stella
Reiser, Maximilian
Trumm, Christoph G.
Radiation dose and image quality of high-pitch emergency abdominal CT in obese patients using third-generation dual-source CT (DSCT)
title Radiation dose and image quality of high-pitch emergency abdominal CT in obese patients using third-generation dual-source CT (DSCT)
title_full Radiation dose and image quality of high-pitch emergency abdominal CT in obese patients using third-generation dual-source CT (DSCT)
title_fullStr Radiation dose and image quality of high-pitch emergency abdominal CT in obese patients using third-generation dual-source CT (DSCT)
title_full_unstemmed Radiation dose and image quality of high-pitch emergency abdominal CT in obese patients using third-generation dual-source CT (DSCT)
title_short Radiation dose and image quality of high-pitch emergency abdominal CT in obese patients using third-generation dual-source CT (DSCT)
title_sort radiation dose and image quality of high-pitch emergency abdominal ct in obese patients using third-generation dual-source ct (dsct)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6828752/
https://www.ncbi.nlm.nih.gov/pubmed/31685902
http://dx.doi.org/10.1038/s41598-019-52454-5
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