Evidence map›Paper›PMID 26801161›Full record

Observational studyEuropean radiology2016

Inter-observer and inter-examination variability of manual vertebral bone attenuation measurements on computed tomography.

Esther Pompe, Pim A de Jong, Werner U de Jong, Richard A P Takx, Anouk L M Eikendal, Martin J Willemink, Matthijs Oudkerk, Ricardo P J Budde, Jan-Willem J Lammers, Firdaus A A Mohamed Hoesein

Abstract readObservational Study
In one paragraph

Observational study in European radiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing 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

49 citing papers in PubMed.

  1. Future Osteoporotic Fracture Risk Related to Lumbar Vertebral Trabecular Attenuation Measured at Routine Body CT.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2018
    Trial
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  4. Disc degeneration did not lead to an increased incidence of adjacent vertebral fractures in wedge-type OVCF patients.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
    Article
  5. Degenerative scoliosis may trigger higher incidence of adjacent vertebral fractures following percutaneous vertebroplasty: a clinical evidence-based biomechanical research.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2026
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  13. Vertebral CT Hounsfield units in postmenopausal women with osteoporotic vertebral compression fracture: identification and validation of reference intervals.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
    Article
  14. Assessment of trabecular bone Hounsfield units in the lumbar spine for osteoporosis evaluation in individuals aged 65 and above: a review.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2025
    Review
  15. A novel T2-weighted series-based modified vertebral bone quality score for evaluating bone mineral density.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
    Article
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  20. Gender-Specific Risk Factors for Asymmetric Bone Density in Adult Degenerative Lumbar Scoliosis: A Retrospective Cohort Analysis.Medical science monitor : international medical journal of experimental and clinical research · 2024
    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

10 authors.

Esther PompeDepartment of Pulmonology, University Medical Center Utrecht, P.O. Box 85500, 3508 GA, Utrecht, E.03.511, The Netherlands. e.pompe@umcutrecht.nl.
Pim A de JongDepartment of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands.
Werner U de JongDepartment of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands.
Richard A P TakxDepartment of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands.
Anouk L M EikendalDepartment of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands.
Martin J WilleminkDepartment of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands.
Matthijs OudkerkDepartment of Radiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Ricardo P J BuddeDepartment of Radiology, Erasmus Medical Center, Rotterdam, The Netherlands.
Jan-Willem J LammersDepartment of Pulmonology, University Medical Center Utrecht, P.O. Box 85500, 3508 GA, Utrecht, E.03.511, The Netherlands.
Firdaus A A Mohamed HoeseinDepartment of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo determine inter-observer and inter-examination variability of manual attenuation measurements of the vertebrae in low-dose unenhanced chest computed tomography (CT).

methodsThree hundred and sixty-seven lung cancer screening trial participants who underwent baseline and repeat unenhanced low-dose CT after 3 months because of an indeterminate lung nodule were included. The CT attenuation value of the first lumbar vertebrae (L1) was measured in all CTs by one observer to obtain inter-examination reliability. Six observers performed measurements in 100 randomly selected CTs to determine agreement with limits of agreement and Bland-Altman plots and reliability with intraclass correlation coefficients (ICCs). Reclassification analyses were performed using a threshold of 110 HU to define osteoporosis.

resultsInter-examination reliability was excellent with an ICC of 0.92 (p < 0.001). Inter-examination limits of agreement ranged from -26 to 28 HU with a mean difference of 1 ± 14 HU. Inter-observer reliability ICCs ranged from 0.70 to 0.91. Inter-examination variability led to 11.2 % reclassification of participants and inter-observer variability led to 22.1 % reclassification.

conclusionsVertebral attenuation values can be manually quantified with good to excellent inter-examination and inter-observer reliability on unenhanced low-dose chest CT. This information is valuable for early detection of osteoporosis on low-dose chest CT. KEY POINTS: • Vertebral attenuation values can be manually quantified on low-dose unenhanced CT reliably. • Vertebral attenuation measurements may be helpful in detecting subclinical low bone density. • This could become of importance in the detection of osteoporosis.

Indexed as

AgedEarly Detection of CancerFemaleHumansLumbar VertebraeLung NeoplasmsMaleMiddle AgedObserver VariationOsteoporosisRadiation DosageReproducibility of ResultsRetrospective StudiesTomography, X-Ray ComputedBone mineral densityComputed tomographyInter-observer variabilityIntra-observer variabilityOsteoporosis

Identifiers

PMID26801161
PMCPMC4972882

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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.