Low-dose high-pitch CT angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.

<h4>Objective</h4>To prospectively evaluate image quality and radiation dose using a low-dose computed tomography angiography protocol and iterative image reconstruction for high-pitch dual-source CT-angiography (DSCTA) of the supraaortic arteries.<h4>Material and methods</h4>...

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Autores principales:	Dietrich Beitzke, Richard Nolz, Sylvia Unterhumer, Christina Plank, Michael Weber, Rüdiger Schernthaner, Veronika Schöpf, Florian Wolf, Christian Loewe
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2fb4f53ae0d9463f801eb82db906a221
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spelling	oai:doaj.org-article:2fb4f53ae0d9463f801eb82db906a2212021-11-18T08:16:15ZLow-dose high-pitch CT angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.1932-620310.1371/journal.pone.0099832https://doaj.org/article/2fb4f53ae0d9463f801eb82db906a2212014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24919195/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Objective</h4>To prospectively evaluate image quality and radiation dose using a low-dose computed tomography angiography protocol and iterative image reconstruction for high-pitch dual-source CT-angiography (DSCTA) of the supraaortic arteries.<h4>Material and methods</h4>DSCTA was performed in 42 patients, using either 120 kVp tube voltage, 120 mAS tube current, 2.4 pitch and filtered back projection, or 100 kVp tube voltage, 100 mAs tube current, 3.2 pitch, and sinogram affirmed iterative reconstruction. Measurements of vessel attenuation, of the contrast-to-noise ratio (CNR) and the signal-to-noise ratio (SNR) were performed to objectively evaluate image quality. Two readers evaluated subjective image quality and image noise, using a four-point scale. Effective dose was used to compare the differences in radiation dose.<h4>Results</h4>Low-dose protocol application showed significantly higher vessel opacification (p = 0.013), and non-significantly higher CNR and SNR values. There was no difference in the subjective image quality and image noise reading between the protocols. Effective dose was significantly lower using the low-dose protocol (1.29 ± 0.21 mSv vs. 2.92 ± 0.72 mSv; p < 0.001).<h4>Conclusion</h4>The combined use of reduced tube voltage, reduced tube current, and iterative reconstruction reduces radiation dose by 55.4% in high-pitch DSCTA of the supraaortic arteries without impairment of image quality.Dietrich BeitzkeRichard NolzSylvia UnterhumerChristina PlankMichael WeberRüdiger SchernthanerVeronika SchöpfFlorian WolfChristian LoewePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 6, p e99832 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dietrich Beitzke Richard Nolz Sylvia Unterhumer Christina Plank Michael Weber Rüdiger Schernthaner Veronika Schöpf Florian Wolf Christian Loewe Low-dose high-pitch CT angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.
description	<h4>Objective</h4>To prospectively evaluate image quality and radiation dose using a low-dose computed tomography angiography protocol and iterative image reconstruction for high-pitch dual-source CT-angiography (DSCTA) of the supraaortic arteries.<h4>Material and methods</h4>DSCTA was performed in 42 patients, using either 120 kVp tube voltage, 120 mAS tube current, 2.4 pitch and filtered back projection, or 100 kVp tube voltage, 100 mAs tube current, 3.2 pitch, and sinogram affirmed iterative reconstruction. Measurements of vessel attenuation, of the contrast-to-noise ratio (CNR) and the signal-to-noise ratio (SNR) were performed to objectively evaluate image quality. Two readers evaluated subjective image quality and image noise, using a four-point scale. Effective dose was used to compare the differences in radiation dose.<h4>Results</h4>Low-dose protocol application showed significantly higher vessel opacification (p = 0.013), and non-significantly higher CNR and SNR values. There was no difference in the subjective image quality and image noise reading between the protocols. Effective dose was significantly lower using the low-dose protocol (1.29 ± 0.21 mSv vs. 2.92 ± 0.72 mSv; p < 0.001).<h4>Conclusion</h4>The combined use of reduced tube voltage, reduced tube current, and iterative reconstruction reduces radiation dose by 55.4% in high-pitch DSCTA of the supraaortic arteries without impairment of image quality.
format	article
author	Dietrich Beitzke Richard Nolz Sylvia Unterhumer Christina Plank Michael Weber Rüdiger Schernthaner Veronika Schöpf Florian Wolf Christian Loewe
author_facet	Dietrich Beitzke Richard Nolz Sylvia Unterhumer Christina Plank Michael Weber Rüdiger Schernthaner Veronika Schöpf Florian Wolf Christian Loewe
author_sort	Dietrich Beitzke
title	Low-dose high-pitch CT angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.
title_short	Low-dose high-pitch CT angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.
title_full	Low-dose high-pitch CT angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.
title_fullStr	Low-dose high-pitch CT angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.
title_full_unstemmed	Low-dose high-pitch CT angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.
title_sort	low-dose high-pitch ct angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/2fb4f53ae0d9463f801eb82db906a221
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Low-dose high-pitch CT angiography of the supraaortic arteries using sinogram-affirmed iterative reconstruction.

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