Evidence map›Paper›PMID 28405477›Full record

ArticleActa radiologica open2016

Influence of adaptive statistical iterative reconstruction algorithm on image quality in coronary computed tomography angiography.

Helle Precht, Jesper Thygesen, Oke Gerke, Kenneth Egstrup, Dag Waaler, Jess Lambrechtsen

Open access · goldAbstract read
In one paragraph

Article in Acta radiologica open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.5field-weighted citation impact, top 30% of its field
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

4 citing papers in PubMed, 9 citations in OpenAlex.

  1. Review
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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

6 authors at 3 institutions in 1 country.

Helle PrechtDepartment of Medical Research, Odense University Hospital Svendborg, Svendborg, Denmark; Conrad Research Programme, University College Lillebelt, Odense, Denmark.
Jesper ThygesenDepartment of Clinical Engineering, Central Denmark Region, Århus, Denmark.
Oke GerkeDepartment of Nuclear Medicine, Odense University Hospital, Odense, Denmark; Center of Health Economics Research, University of Southern Denmark, Odense, Denmark.
Kenneth EgstrupDepartment of Medical Research, Odense University Hospital Svendborg, Svendborg, Denmark.
Dag WaalerGjøvik University College, Gjøvik, Norway.
Jess LambrechtsenDepartment of Medical Research, Odense University Hospital Svendborg, Svendborg, Denmark.
Odense University Hospital · DKSvendborg Sygehus · DKCentral Denmark Region · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCoronary computed tomography angiography (CCTA) requires high spatial and temporal resolution, increased low contrast resolution for the assessment of coronary artery stenosis, plaque detection, and/or non-coronary pathology. Therefore, new reconstruction algorithms, particularly iterative reconstruction (IR) techniques, have been developed in an attempt to improve image quality with no cost in radiation exposure. PURPOSE: To evaluate whether adaptive statistical iterative reconstruction (ASIR) enhances perceived image quality in CCTA compared to filtered back projection (FBP). MATERIAL AND

methodsThirty patients underwent CCTA due to suspected coronary artery disease. Images were reconstructed using FBP, 30% ASIR, and 60% ASIR. Ninety image sets were evaluated by five observers using the subjective visual grading analysis (VGA) and assessed by proportional odds modeling. Objective quality assessment (contrast, noise, and the contrast-to-noise ratio [CNR]) was analyzed with linear mixed effects modeling on log-transformed data. The need for ethical approval was waived by the local ethics committee as the study only involved anonymously collected clinical data.

resultsVGA showed significant improvements in sharpness by comparing FBP with ASIR, resulting in odds ratios of 1.54 for 30% ASIR and 1.89 for 60% ASIR (

conclusionASIR improved the subjective image quality of parameter sharpness and, objectively, reduced noise and increased CNR.

Indexed as

cardiacComputed tomography angiography (CTA)image manipulation/reconstructionperception imagevascular

Identifiers

PMID28405477
PMCPMC5384491
OpenAlexW2571545524

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Registered trials

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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.