Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Evaluation of Model-Based Iterative Reconstruction in Abdominal Computed Tomography Imaging at Two Different Dose Levels

Hettinger, E LU ; Aurumskjöld, M-L LU ; Sartor, H LU ; Holmquist, F LU ; Svärd, D LU and Timberg, P LU (2021) In Radiation Protection Dosimetry 195(44624). p.205-211
Abstract

The purpose of this study was to qualitatively evaluate recently introduced Model-based iterative reconstruction method (IMR) and routinely used iterative reconstruction algorithm iDose4 to investigate future dose reduction possibilities for abdominal CT exams. The study contained data from 34 patients who underwent abdominal CT in SkåneUniversityHospital Lund, Sweden. A low-dose scan (CTDIvol3.4 mGy) reconstructed with both iDose4 and IMR and a standard-dose scan (CTDIvol 5.3 mG) reconstructed with iDose4 alone were visually graded in ViewDEX v2.0 by four radiologists using modified EU image criteria. The visual grading characteristics analysis for the evaluation comparing iDose4 standard dose with IMR low dose did not show any... (More)

The purpose of this study was to qualitatively evaluate recently introduced Model-based iterative reconstruction method (IMR) and routinely used iterative reconstruction algorithm iDose4 to investigate future dose reduction possibilities for abdominal CT exams. The study contained data from 34 patients who underwent abdominal CT in SkåneUniversityHospital Lund, Sweden. A low-dose scan (CTDIvol3.4 mGy) reconstructed with both iDose4 and IMR and a standard-dose scan (CTDIvol 5.3 mG) reconstructed with iDose4 alone were visually graded in ViewDEX v2.0 by four radiologists using modified EU image criteria. The visual grading characteristics analysis for the evaluation comparing iDose4 standard dose with IMR low dose did not show any statistically significant difference in five of six criteria. In one of the criteria, iDose4 was superior to IMR. The result show promising possibilities are introduced for substantial radiation dose reduction (35%) in abdominal CT imaging when replacing iDose4 with IMR. Still, care should be taken when considering the reproduction of adrenal glands.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Radiation Protection Dosimetry
volume
195
issue
44624
pages
205 - 211
publisher
Oxford University Press
external identifiers
  • scopus:85118597815
  • pmid:33683328
ISSN
1742-3406
DOI
10.1093/rpd/ncab010
language
English
LU publication?
yes
id
72a2f7dd-669f-4372-a7d8-4ef2ba02b2c4
date added to LUP
2021-04-15 20:28:11
date last changed
2024-06-29 11:06:34
@article{72a2f7dd-669f-4372-a7d8-4ef2ba02b2c4,
  abstract     = {{<p>The purpose of this study was to qualitatively evaluate recently introduced Model-based iterative reconstruction method (IMR) and routinely used iterative reconstruction algorithm iDose4 to investigate future dose reduction possibilities for abdominal CT exams. The study contained data from 34 patients who underwent abdominal CT in SkåneUniversityHospital Lund, Sweden. A low-dose scan (CTDIvol3.4 mGy) reconstructed with both iDose4 and IMR and a standard-dose scan (CTDIvol 5.3 mG) reconstructed with iDose4 alone were visually graded in ViewDEX v2.0 by four radiologists using modified EU image criteria. The visual grading characteristics analysis for the evaluation comparing iDose4 standard dose with IMR low dose did not show any statistically significant difference in five of six criteria. In one of the criteria, iDose4 was superior to IMR. The result show promising possibilities are introduced for substantial radiation dose reduction (35%) in abdominal CT imaging when replacing iDose4 with IMR. Still, care should be taken when considering the reproduction of adrenal glands.</p>}},
  author       = {{Hettinger, E and Aurumskjöld, M-L and Sartor, H and Holmquist, F and Svärd, D and Timberg, P}},
  issn         = {{1742-3406}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{44624}},
  pages        = {{205--211}},
  publisher    = {{Oxford University Press}},
  series       = {{Radiation Protection Dosimetry}},
  title        = {{Evaluation of Model-Based Iterative Reconstruction in Abdominal Computed Tomography Imaging at Two Different Dose Levels}},
  url          = {{http://dx.doi.org/10.1093/rpd/ncab010}},
  doi          = {{10.1093/rpd/ncab010}},
  volume       = {{195}},
  year         = {{2021}},
}