Evidence map›Paper›PMID 28374080›Full record

ArticleEuropean radiology2017

Impact of model-based iterative reconstruction on low-contrast lesion detection and image quality in abdominal CT: a 12-reader-based comparative phantom study with filtered back projection at different tube voltages.

André Euler, Bram Stieltjes, Zsolt Szucs-Farkas, Reto Eichenberger, Clemens Reisinger, Anna Hirschmann, Caroline Zaehringer, Achim Kircher, Matthias Streif, Sabine Bucher and 5 more

Erratum issuedAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in European radiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

21 citing papers in PubMed.

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  20. Estimating detectability indexJournal of medical imaging (Bellingham, Wash.) · 2018
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors.

André EulerClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Bram StieltjesClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Zsolt Szucs-FarkasInstitute of Radiology, Hospital Centre of Biel, Biel, Switzerland.
Reto EichenbergerClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Clemens ReisingerClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Anna HirschmannClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Caroline ZaehringerClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Achim KircherClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Matthias StreifClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Sabine BucherClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
David BuerglerClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Luigia D'ErricoClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Sebastién KoppClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Markus WilhelmClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.
Sebastian T SchinderaClinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland. sschindera@aol.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo evaluate the impact of model-based iterative reconstruction (MBIR) on image quality and low-contrast lesion detection compared with filtered back projection (FBP) in abdominal computed tomography (CT) of simulated medium and large patients at different tube voltages.

methodsA phantom with 45 hypoattenuating lesions was placed in two water containers and scanned at 70, 80, 100, and 120 kVp. The 120-kVp protocol served as reference, and the volume CT dose index (CTDI

resultsMBIR decreased the image noise by 24% and 27%, and increased the CNR by 30% and 29% for the medium and large phantoms, respectively. Lower tube voltages increased the CNR by 58%, 46%, and 16% at 70, 80, and 100 kVp, respectively, compared with 120 kVp in the medium phantom and by 9%, 18% and 12% in the large phantom. No significant difference in lesion detection rate was observed (medium: 79-82%; large: 57-65%; P > 0.37).

conclusionsAlthough MBIR improved quantitative image quality compared with FBP, it did not result in increased low-contrast lesion detection in abdominal CT at different tube voltages in simulated medium and large patients. KEY POINTS: • MBIR improved quantitative image quality but not lesion detection compared with FBP. • Increased CNR by low tube voltages did not improve lesion detection. • Changes in image noise and CNR do not directly influence diagnostic accuracy.

Indexed as

AlgorithmsPhantoms, ImagingHumansRadiation DosageRadiographic Image Interpretation, Computer-AssistedTomography, X-Ray ComputedFiltered back projectionLow-contrast detectionModel-based iterative reconstructionMultidetector computed tomographyRadiological phantom

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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.