Cristin-resultat-ID: 1628674
Sist endret: 18. februar 2019, 11:28
NVI-rapporteringsår: 2018
Resultat
Vitenskapelig artikkel
2018

The use of 80 kV versus 100 kV in pulmonary CT angiography: An evaluation of the impact on radiation dose and image quality on two CT scanners

Bidragsytere:
  • Albertina Rusandu
  • Asbjørn Ødegård
  • Gabriele Christiane Engh og
  • Hilde M Olerud

Tidsskrift

Radiography
ISSN 1078-8174
e-ISSN 1532-2831
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2018
Publisert online: 2018
Trykket: 2019
Volum: 25
Hefte: 1
Sider: 58 - 64
Open Access

Importkilder

Scopus-ID: 2-s2.0-85056224543

Beskrivelse Beskrivelse

Tittel

The use of 80 kV versus 100 kV in pulmonary CT angiography: An evaluation of the impact on radiation dose and image quality on two CT scanners

Sammendrag

Use of CT in the investigation of pulmonary embolism in radiosensitive patients such as pregnant and young female patients entails the need for protocol optimization. The aim of this study was to analyze the dose reduction and image quality achieved by using 80 kV instead of 100 kV in CT pulmonary angiography protocols. Methods 80 examinations of non-obese patients were analyzed (40 consecutive patients for each protocol, equally distributed on two CT scanners). Objective image quality was assessed by measurements of HU values (average and standard deviation) in five ROIs in pulmonary arteries and calculations of signal-to-noise (SNR) and contrast-to-noise ratios (CNR). Subjective image quality was independently evaluated by two radiologists in terms of perceived noise, sharp reproduction of pulmonary arteries and overall diagnostic quality. Radiation dose parameters (CTDIvol, DLP, SSDE and effective dose) and effective risk were compared. Differences in radiation dose and objective measures of image quality for the two protocols were assessed using the independent t test; comparison of subjective grading of image quality was performed with the Mann–Whitney U test. Results Use of 80 kV significantly increased both arterial contrast enhancement and image noise. Differences in SNR and CNR between protocols were not statistically significant. Achieved dose reduction by using 80 kV was significant on both scanners (SSDE reduction 35% and 46%, p 

Bidragsytere

Albertina Rusandu

  • Tilknyttet:
    Forfatter
    ved Institutt for sirkulasjon og bildediagnostikk ved Norges teknisk-naturvitenskapelige universitet
  • Tilknyttet:
    Forfatter
    ved Fakultet for helse- og sosialvitenskap ved Universitetet i Sørøst-Norge

Asbjørn Ødegård

  • Tilknyttet:
    Forfatter
    ved Klinikk for bildediagnostikk ved St. Olavs Hospital HF

Gabriele Christiane Engh

  • Tilknyttet:
    Forfatter
    ved Klinikk for bildediagnostikk ved St. Olavs Hospital HF

Hilde M Olerud

  • Tilknyttet:
    Forfatter
    ved Institutt for optometri, radiografi og lysdesign ved Universitetet i Sørøst-Norge
1 - 4 av 4