Experimental article – Maintaining image quality for paediatric chest CTs while lowering dose: FBP versus SAFIRE

Synnøve Borgea, Nina Campbell, Ana Gomes, Aysha M. Raszkowskia, Jan Willem Rook, Audun Sanderud, Anique Vallinga, Carst Buissink, Audrey Vouillamoze

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Objectives: Children have a greater risk from radiation, per unit dose, due to increased radiosensitivity and longer life expectancies. It is of paramount importance to reduce the radiation dose received by children.
This research concerns chest CT examinations on paediatric patients. The purpose of this study was to compare the image quality and the dose received from imaging with images reconstructed with filtered back projection (FBP) and five strengths of Sinogram-Affirmed Iterative Reconstruction (SAFIRE).
Methods: Using a multi-slice CT scanner, six series of images were taken of a paediatric phantom. Two kVp values (80 and 110), 3 mAs values (25, 50 and 100) and 2 slice thicknesses (1 mm and 3 mm) were used. All images were reconstructed with FBP and five strengths of SAFIRE. Ten observers evaluated
visual image quality. Dose was measured using CT-Expo.
Results: FBP required a higher dose than all SAFIRE strengths to obtain the same image quality for sharpness and noise. For sharpness and contrast image quality ratings of 4, FBP required doses of 6.4 and 6.8 mSv respectively. SAFIRE 5 required doses of 3.4 and 4.3 mSv respectively. Clinical acceptance rate was improved by the higher voltage (110 kV) for all images in comparison to 80 kV, which required a higher dose for acceptable image quality. 3 mm images were typically better quality than 1 mm images.
Conclusion: SAFIRE 5 was optimal for dose reduction and image quality
Originele taal-2English
TitelOPTIMAX 2014: radiation dose and image quality optimisation in medical imaging
Pagina's16-20
StatusPublished - 2015
EvenementOPTIMAX 2014: radiation dose and image quality optimisation in medical imaging - Lisbon , Portugal
Duur: 1 aug 201431 aug 2014

Seminar

SeminarOPTIMAX 2014
LandPortugal
StadLisbon
Periode1/08/1431/08/14

Vingerafdruk

Thorax
Radiation
Pediatrics
Radiation Tolerance
Life Expectancy
Noise
Research

Keywords

  • safire
  • risicoreductie bestralingsdosis
  • ct
  • beeldkwaliteit
  • dosisreductie
  • fbp
  • pediatrische patienten

Citeer dit

Borgea, S., Campbell, N., Gomes, A., Raszkowskia, A. M., Rook, J. W., Sanderud, A., ... Vouillamoze, A. (2015). Experimental article – Maintaining image quality for paediatric chest CTs while lowering dose: FBP versus SAFIRE. In OPTIMAX 2014: radiation dose and image quality optimisation in medical imaging (blz. 16-20)
Borgea, Synnøve ; Campbell, Nina ; Gomes, Ana ; Raszkowskia, Aysha M. ; Rook, Jan Willem ; Sanderud, Audun ; Vallinga, Anique ; Buissink, Carst ; Vouillamoze, Audrey. / Experimental article – Maintaining image quality for paediatric chest CTs while lowering dose : FBP versus SAFIRE. OPTIMAX 2014: radiation dose and image quality optimisation in medical imaging. 2015. blz. 16-20
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title = "Experimental article – Maintaining image quality for paediatric chest CTs while lowering dose: FBP versus SAFIRE",
abstract = "Objectives: Children have a greater risk from radiation, per unit dose, due to increased radiosensitivity and longer life expectancies. It is of paramount importance to reduce the radiation dose received by children.This research concerns chest CT examinations on paediatric patients. The purpose of this study was to compare the image quality and the dose received from imaging with images reconstructed with filtered back projection (FBP) and five strengths of Sinogram-Affirmed Iterative Reconstruction (SAFIRE).Methods: Using a multi-slice CT scanner, six series of images were taken of a paediatric phantom. Two kVp values (80 and 110), 3 mAs values (25, 50 and 100) and 2 slice thicknesses (1 mm and 3 mm) were used. All images were reconstructed with FBP and five strengths of SAFIRE. Ten observers evaluatedvisual image quality. Dose was measured using CT-Expo.Results: FBP required a higher dose than all SAFIRE strengths to obtain the same image quality for sharpness and noise. For sharpness and contrast image quality ratings of 4, FBP required doses of 6.4 and 6.8 mSv respectively. SAFIRE 5 required doses of 3.4 and 4.3 mSv respectively. Clinical acceptance rate was improved by the higher voltage (110 kV) for all images in comparison to 80 kV, which required a higher dose for acceptable image quality. 3 mm images were typically better quality than 1 mm images.Conclusion: SAFIRE 5 was optimal for dose reduction and image quality",
keywords = "safire, risicoreductie bestralingsdosis, ct, beeldkwaliteit, dosisreductie, fbp, pediatrische patienten, safire, chest radiation risk dose reduction, ct, image quality, dose reduction, fbp, paediatric patients",
author = "Synn{\o}ve Borgea and Nina Campbell and Ana Gomes and Raszkowskia, {Aysha M.} and Rook, {Jan Willem} and Audun Sanderud and Anique Vallinga and Carst Buissink and Audrey Vouillamoze",
year = "2015",
language = "English",
pages = "16--20",
booktitle = "OPTIMAX 2014: radiation dose and image quality optimisation in medical imaging",

}

Borgea, S, Campbell, N, Gomes, A, Raszkowskia, AM, Rook, JW, Sanderud, A, Vallinga, A, Buissink, C & Vouillamoze, A 2015, Experimental article – Maintaining image quality for paediatric chest CTs while lowering dose: FBP versus SAFIRE. in OPTIMAX 2014: radiation dose and image quality optimisation in medical imaging. blz. 16-20, OPTIMAX 2014, Lisbon , Portugal, 1/08/14.

Experimental article – Maintaining image quality for paediatric chest CTs while lowering dose : FBP versus SAFIRE. / Borgea, Synnøve; Campbell, Nina; Gomes, Ana; Raszkowskia, Aysha M.; Rook, Jan Willem; Sanderud, Audun; Vallinga, Anique; Buissink, Carst; Vouillamoze, Audrey.

OPTIMAX 2014: radiation dose and image quality optimisation in medical imaging. 2015. blz. 16-20.

Onderzoeksoutput: Contribution to conference proceedingAcademicpeer review

TY - GEN

T1 - Experimental article – Maintaining image quality for paediatric chest CTs while lowering dose

T2 - FBP versus SAFIRE

AU - Borgea, Synnøve

AU - Campbell, Nina

AU - Gomes, Ana

AU - Raszkowskia, Aysha M.

AU - Rook, Jan Willem

AU - Sanderud, Audun

AU - Vallinga, Anique

AU - Buissink, Carst

AU - Vouillamoze, Audrey

PY - 2015

Y1 - 2015

N2 - Objectives: Children have a greater risk from radiation, per unit dose, due to increased radiosensitivity and longer life expectancies. It is of paramount importance to reduce the radiation dose received by children.This research concerns chest CT examinations on paediatric patients. The purpose of this study was to compare the image quality and the dose received from imaging with images reconstructed with filtered back projection (FBP) and five strengths of Sinogram-Affirmed Iterative Reconstruction (SAFIRE).Methods: Using a multi-slice CT scanner, six series of images were taken of a paediatric phantom. Two kVp values (80 and 110), 3 mAs values (25, 50 and 100) and 2 slice thicknesses (1 mm and 3 mm) were used. All images were reconstructed with FBP and five strengths of SAFIRE. Ten observers evaluatedvisual image quality. Dose was measured using CT-Expo.Results: FBP required a higher dose than all SAFIRE strengths to obtain the same image quality for sharpness and noise. For sharpness and contrast image quality ratings of 4, FBP required doses of 6.4 and 6.8 mSv respectively. SAFIRE 5 required doses of 3.4 and 4.3 mSv respectively. Clinical acceptance rate was improved by the higher voltage (110 kV) for all images in comparison to 80 kV, which required a higher dose for acceptable image quality. 3 mm images were typically better quality than 1 mm images.Conclusion: SAFIRE 5 was optimal for dose reduction and image quality

AB - Objectives: Children have a greater risk from radiation, per unit dose, due to increased radiosensitivity and longer life expectancies. It is of paramount importance to reduce the radiation dose received by children.This research concerns chest CT examinations on paediatric patients. The purpose of this study was to compare the image quality and the dose received from imaging with images reconstructed with filtered back projection (FBP) and five strengths of Sinogram-Affirmed Iterative Reconstruction (SAFIRE).Methods: Using a multi-slice CT scanner, six series of images were taken of a paediatric phantom. Two kVp values (80 and 110), 3 mAs values (25, 50 and 100) and 2 slice thicknesses (1 mm and 3 mm) were used. All images were reconstructed with FBP and five strengths of SAFIRE. Ten observers evaluatedvisual image quality. Dose was measured using CT-Expo.Results: FBP required a higher dose than all SAFIRE strengths to obtain the same image quality for sharpness and noise. For sharpness and contrast image quality ratings of 4, FBP required doses of 6.4 and 6.8 mSv respectively. SAFIRE 5 required doses of 3.4 and 4.3 mSv respectively. Clinical acceptance rate was improved by the higher voltage (110 kV) for all images in comparison to 80 kV, which required a higher dose for acceptable image quality. 3 mm images were typically better quality than 1 mm images.Conclusion: SAFIRE 5 was optimal for dose reduction and image quality

KW - safire

KW - risicoreductie bestralingsdosis

KW - ct

KW - beeldkwaliteit

KW - dosisreductie

KW - fbp

KW - pediatrische patienten

KW - safire

KW - chest radiation risk dose reduction

KW - ct

KW - image quality

KW - dose reduction

KW - fbp

KW - paediatric patients

M3 - Contribution to conference proceeding

SP - 16

EP - 20

BT - OPTIMAX 2014: radiation dose and image quality optimisation in medical imaging

ER -

Borgea S, Campbell N, Gomes A, Raszkowskia AM, Rook JW, Sanderud A et al. Experimental article – Maintaining image quality for paediatric chest CTs while lowering dose: FBP versus SAFIRE. In OPTIMAX 2014: radiation dose and image quality optimisation in medical imaging. 2015. blz. 16-20