Evidence map›Paper›PMID 23838086›Full record

ArticleClinical radiology2013

Iterative reconstruction and individualized automatic tube current selection reduce radiation dose while maintaining image quality in 320-multidetector computed tomography coronary angiography.

M C Williams, N W Weir, S Mirsadraee, F Millar, A Baird, F Minns, N G Uren, G McKillop, R K Bull, E J R van Beek and 2 more

Abstract read
In one paragraph

Article in Clinical radiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed.

  1. Trial
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. The role of advanced reconstruction algorithms in cardiac CT.Cardiovascular diagnosis and therapy · 2017
    Review
  10. Article
  11. Article
  12. Article
  13. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

M C WilliamsUniversity of Edinburgh/British Heart Foundation Centre for Cardiovascular Science, Edinburgh, UK. Electronic address: michelle.williams@ed.ac.uk.
N W Weir
S Mirsadraee
F Millar
A Baird
F Minns
N G Uren
G McKillop
R K Bull
E J R van Beek
J H Reid
D E Newby

Funding

British Heart Foundation CH/09/002British Heart Foundation FS/11/14/28692British Heart Foundation RE/08/001Chief Scientist Office CZH/4/588Medical Research Council G0701127
6 · The paper itself

Abstract

aimTo assess the effect of two iterative reconstruction algorithms (AIDR and AIDR3D) and individualized automatic tube current selection on radiation dose and image quality in computed tomography coronary angiography (CTCA). MATERIALS AND

methodsIn a single-centre cohort study, 942 patients underwent electrocardiogram-gated CTCA using a 320-multidetector CT system. Images from group 1 (n = 228) were reconstructed with a filtered back projection algorithm (Quantum Denoising Software, QDS+). Iterative reconstruction was used for group 2 (AIDR, n = 379) and group 3 (AIDR3D, n = 335). Tube current was selected based on body mass index (BMI) for groups 1 and 2, and selected automatically based on scout image attenuation for group 3. Subjective image quality was graded on a four-point scale (1 = excellent, 4 = non-diagnostic).

resultsThere were no differences in age (p = 0.975), body mass index (p = 0.435), or heart rate (p = 0.746) between the groups. Image quality improved with iterative reconstruction and automatic tube current selection [1.3 (95% confidence intervals (CI): 1.2-1.4), 1.2 (1.1-1.2) and 1.1 (1-1.2) respectively; p < 0.001] and radiation dose decreased [274 (260-290), 242 (230-253) and 168 (156-180) mGy cm, respectively; p < 0.001].

conclusionThe application of the latest iterative reconstruction algorithm and individualized automatic tube current selection can substantially reduce radiation dose whilst improving image quality in CTCA.

Indexed as

Radiation DosageAlgorithmsCohort StudiesContrast MediaCoronary AngiographyCoronary Artery DiseaseElectrocardiographyFemaleHumansImage Processing, Computer-AssistedIopamidolMaleMiddle AgedMultidetector Computed TomographyRadiation ProtectionRadiographic Image EnhancementContrast MediaiomeprolIopamidol

Identifiers

PMID23838086
PMCPMC3807656

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.