Comparison study of image quality at various radiation doses for CT venography using advanced modeled iterative reconstruction.

<h4>Objective</h4>We compared the image quality according to the radiation dose on computed tomography (CT) venography at 80 kVp using advanced modeled iterative reconstruction for deep vein thrombus and other specific clinical conditions considering standard-, low-, and ultralow-dose CT...

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Autores principales:	Jung Han Hwang, Jin Mo Kang, So Hyun Park, Suyoung Park, Jeong Ho Kim, Sang Tae Choi
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ed5a2ff652234ed79c8e4f694ac82833
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spelling	oai:doaj.org-article:ed5a2ff652234ed79c8e4f694ac828332021-12-02T20:19:19ZComparison study of image quality at various radiation doses for CT venography using advanced modeled iterative reconstruction.1932-620310.1371/journal.pone.0256564https://doaj.org/article/ed5a2ff652234ed79c8e4f694ac828332021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256564https://doaj.org/toc/1932-6203<h4>Objective</h4>We compared the image quality according to the radiation dose on computed tomography (CT) venography at 80 kVp using advanced modeled iterative reconstruction for deep vein thrombus and other specific clinical conditions considering standard-, low-, and ultralow-dose CT.<h4>Methods</h4>In this retrospective study, 105 consecutive CT venography examinations were included using a third-generation dual-source scanner in the dual-source mode in tubes A (reference mAs, 210 mAs at 70%) and B (reference mAs, 90 mAs at 30%) at a fixed 80 kVp. Two radiologists independently reviewed each observation of standard- (100% radiation dose), low- (70%), and ultralow-dose (30%) CT. The objective quality of large veins and subjective image quality regarding lower-extremity veins and deep vein thrombus were compared between images according to the dose. In addition, the CT dose index volumes were displayed from the images.<h4>Results</h4>From the patients, 24 presented deep vein thrombus in 69 venous segments of CT examinations. Standard-dose CT provided the lowest image noise at the inferior vena cava and femoral vein compared with low- and ultralow-dose CT (p < 0.001). There were no differences regarding subjective image quality between the images of popliteal and calf veins at the three doses (e.g., 3.8 ± 0.7, right popliteal vein, p = 0.977). The image quality of the 69 deep vein thrombus segments showed equally slightly higher scores in standard- and low-dose CT (4.0 ± 0.2) than in ultralow-dose CT (3.9 ± 0.4). The CT dose index volumes were 4.4 ± 0.6, 3.1 ± 0.4, and 1.3 ± 0.2 mGy for standard-, low-, and ultralow-dose CT, respectively.<h4>Conclusions</h4>Low- and ultralow-dose CT venography at 80 kVp using an advanced model based iterative reconstruction algorithm allows to evaluate deep vein thrombus and perform follow-up examinations while showing an acceptable image quality and reducing the radiation dose.Jung Han HwangJin Mo KangSo Hyun ParkSuyoung ParkJeong Ho KimSang Tae ChoiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0256564 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jung Han Hwang Jin Mo Kang So Hyun Park Suyoung Park Jeong Ho Kim Sang Tae Choi Comparison study of image quality at various radiation doses for CT venography using advanced modeled iterative reconstruction.
description	<h4>Objective</h4>We compared the image quality according to the radiation dose on computed tomography (CT) venography at 80 kVp using advanced modeled iterative reconstruction for deep vein thrombus and other specific clinical conditions considering standard-, low-, and ultralow-dose CT.<h4>Methods</h4>In this retrospective study, 105 consecutive CT venography examinations were included using a third-generation dual-source scanner in the dual-source mode in tubes A (reference mAs, 210 mAs at 70%) and B (reference mAs, 90 mAs at 30%) at a fixed 80 kVp. Two radiologists independently reviewed each observation of standard- (100% radiation dose), low- (70%), and ultralow-dose (30%) CT. The objective quality of large veins and subjective image quality regarding lower-extremity veins and deep vein thrombus were compared between images according to the dose. In addition, the CT dose index volumes were displayed from the images.<h4>Results</h4>From the patients, 24 presented deep vein thrombus in 69 venous segments of CT examinations. Standard-dose CT provided the lowest image noise at the inferior vena cava and femoral vein compared with low- and ultralow-dose CT (p < 0.001). There were no differences regarding subjective image quality between the images of popliteal and calf veins at the three doses (e.g., 3.8 ± 0.7, right popliteal vein, p = 0.977). The image quality of the 69 deep vein thrombus segments showed equally slightly higher scores in standard- and low-dose CT (4.0 ± 0.2) than in ultralow-dose CT (3.9 ± 0.4). The CT dose index volumes were 4.4 ± 0.6, 3.1 ± 0.4, and 1.3 ± 0.2 mGy for standard-, low-, and ultralow-dose CT, respectively.<h4>Conclusions</h4>Low- and ultralow-dose CT venography at 80 kVp using an advanced model based iterative reconstruction algorithm allows to evaluate deep vein thrombus and perform follow-up examinations while showing an acceptable image quality and reducing the radiation dose.
format	article
author	Jung Han Hwang Jin Mo Kang So Hyun Park Suyoung Park Jeong Ho Kim Sang Tae Choi
author_facet	Jung Han Hwang Jin Mo Kang So Hyun Park Suyoung Park Jeong Ho Kim Sang Tae Choi
author_sort	Jung Han Hwang
title	Comparison study of image quality at various radiation doses for CT venography using advanced modeled iterative reconstruction.
title_short	Comparison study of image quality at various radiation doses for CT venography using advanced modeled iterative reconstruction.
title_full	Comparison study of image quality at various radiation doses for CT venography using advanced modeled iterative reconstruction.
title_fullStr	Comparison study of image quality at various radiation doses for CT venography using advanced modeled iterative reconstruction.
title_full_unstemmed	Comparison study of image quality at various radiation doses for CT venography using advanced modeled iterative reconstruction.
title_sort	comparison study of image quality at various radiation doses for ct venography using advanced modeled iterative reconstruction.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/ed5a2ff652234ed79c8e4f694ac82833
work_keys_str_mv	AT junghanhwang comparisonstudyofimagequalityatvariousradiationdosesforctvenographyusingadvancedmodelediterativereconstruction AT jinmokang comparisonstudyofimagequalityatvariousradiationdosesforctvenographyusingadvancedmodelediterativereconstruction AT sohyunpark comparisonstudyofimagequalityatvariousradiationdosesforctvenographyusingadvancedmodelediterativereconstruction AT suyoungpark comparisonstudyofimagequalityatvariousradiationdosesforctvenographyusingadvancedmodelediterativereconstruction AT jeonghokim comparisonstudyofimagequalityatvariousradiationdosesforctvenographyusingadvancedmodelediterativereconstruction AT sangtaechoi comparisonstudyofimagequalityatvariousradiationdosesforctvenographyusingadvancedmodelediterativereconstruction
_version_	1718374259223429120

Comparison study of image quality at various radiation doses for CT venography using advanced modeled iterative reconstruction.

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