Cargando…

Radiation Dose Reduction in CT Torsion Measurement of the Lower Limb: Introduction of a New Ultra-Low Dose Protocol

This study analyzed the radiation exposure of a new ultra-low dose (ULD) protocol compared to a high-quality (HQ) protocol for CT-torsion measurement of the lower limb. The analyzed patients (n = 60) were examined in the period March to October 2019. In total, 30 consecutive patients were examined w...

Descripción completa

Detalles Bibliográficos
Autores principales: Keller, Gabriel, Götz, Simon, Kraus, Mareen Sarah, Grünwald, Leonard, Springer, Fabian, Afat, Saif
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8304839/
https://www.ncbi.nlm.nih.gov/pubmed/34359292
http://dx.doi.org/10.3390/diagnostics11071209
_version_ 1783727431566229504
author Keller, Gabriel
Götz, Simon
Kraus, Mareen Sarah
Grünwald, Leonard
Springer, Fabian
Afat, Saif
author_facet Keller, Gabriel
Götz, Simon
Kraus, Mareen Sarah
Grünwald, Leonard
Springer, Fabian
Afat, Saif
author_sort Keller, Gabriel
collection PubMed
description This study analyzed the radiation exposure of a new ultra-low dose (ULD) protocol compared to a high-quality (HQ) protocol for CT-torsion measurement of the lower limb. The analyzed patients (n = 60) were examined in the period March to October 2019. In total, 30 consecutive patients were examined with the HQ and 30 consecutive patients with the new ULD protocol comprising automatic tube voltage selection, automatic exposure control, and iterative image reconstruction algorithms. Radiation dose parameters as well as the contrast-to-noise ratio (CNR) and diagnostic confidence (DC; rated by two radiologists) were analyzed and potential predictor variables, such as body mass index and body volume, were assessed. The new ULD protocol resulted in significantly lower radiation dose parameters, with a reduction of the median total dose equivalent to 0.17 mSv in the ULD protocol compared to 4.37 mSv in the HQ protocol (p < 0.001). Both groups showed no significant differences in regard to other parameters (p = 0.344–0.923). CNR was 12.2% lower using the new ULD protocol (p = 0.033). DC was rated best by both readers in every HQ CT and in every ULD CT. The new ULD protocol for CT-torsion measurement of the lower limb resulted in a 96% decrease of radiation exposure down to the level of a single pelvic radiograph while maintaining good image quality.
format Online
Article
Text
id pubmed-8304839
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-83048392021-07-25 Radiation Dose Reduction in CT Torsion Measurement of the Lower Limb: Introduction of a New Ultra-Low Dose Protocol Keller, Gabriel Götz, Simon Kraus, Mareen Sarah Grünwald, Leonard Springer, Fabian Afat, Saif Diagnostics (Basel) Article This study analyzed the radiation exposure of a new ultra-low dose (ULD) protocol compared to a high-quality (HQ) protocol for CT-torsion measurement of the lower limb. The analyzed patients (n = 60) were examined in the period March to October 2019. In total, 30 consecutive patients were examined with the HQ and 30 consecutive patients with the new ULD protocol comprising automatic tube voltage selection, automatic exposure control, and iterative image reconstruction algorithms. Radiation dose parameters as well as the contrast-to-noise ratio (CNR) and diagnostic confidence (DC; rated by two radiologists) were analyzed and potential predictor variables, such as body mass index and body volume, were assessed. The new ULD protocol resulted in significantly lower radiation dose parameters, with a reduction of the median total dose equivalent to 0.17 mSv in the ULD protocol compared to 4.37 mSv in the HQ protocol (p < 0.001). Both groups showed no significant differences in regard to other parameters (p = 0.344–0.923). CNR was 12.2% lower using the new ULD protocol (p = 0.033). DC was rated best by both readers in every HQ CT and in every ULD CT. The new ULD protocol for CT-torsion measurement of the lower limb resulted in a 96% decrease of radiation exposure down to the level of a single pelvic radiograph while maintaining good image quality. MDPI 2021-07-03 /pmc/articles/PMC8304839/ /pubmed/34359292 http://dx.doi.org/10.3390/diagnostics11071209 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Keller, Gabriel
Götz, Simon
Kraus, Mareen Sarah
Grünwald, Leonard
Springer, Fabian
Afat, Saif
Radiation Dose Reduction in CT Torsion Measurement of the Lower Limb: Introduction of a New Ultra-Low Dose Protocol
title Radiation Dose Reduction in CT Torsion Measurement of the Lower Limb: Introduction of a New Ultra-Low Dose Protocol
title_full Radiation Dose Reduction in CT Torsion Measurement of the Lower Limb: Introduction of a New Ultra-Low Dose Protocol
title_fullStr Radiation Dose Reduction in CT Torsion Measurement of the Lower Limb: Introduction of a New Ultra-Low Dose Protocol
title_full_unstemmed Radiation Dose Reduction in CT Torsion Measurement of the Lower Limb: Introduction of a New Ultra-Low Dose Protocol
title_short Radiation Dose Reduction in CT Torsion Measurement of the Lower Limb: Introduction of a New Ultra-Low Dose Protocol
title_sort radiation dose reduction in ct torsion measurement of the lower limb: introduction of a new ultra-low dose protocol
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8304839/
https://www.ncbi.nlm.nih.gov/pubmed/34359292
http://dx.doi.org/10.3390/diagnostics11071209
work_keys_str_mv AT kellergabriel radiationdosereductionincttorsionmeasurementofthelowerlimbintroductionofanewultralowdoseprotocol
AT gotzsimon radiationdosereductionincttorsionmeasurementofthelowerlimbintroductionofanewultralowdoseprotocol
AT krausmareensarah radiationdosereductionincttorsionmeasurementofthelowerlimbintroductionofanewultralowdoseprotocol
AT grunwaldleonard radiationdosereductionincttorsionmeasurementofthelowerlimbintroductionofanewultralowdoseprotocol
AT springerfabian radiationdosereductionincttorsionmeasurementofthelowerlimbintroductionofanewultralowdoseprotocol
AT afatsaif radiationdosereductionincttorsionmeasurementofthelowerlimbintroductionofanewultralowdoseprotocol