Evidence map›Paper›PMID 40779166›Full record

ArticleEuropean radiology2026

Detection of lumbar disc herniation and degeneration using photon-counting detector CT with virtual non-calcium imaging.

Dingbo Shu, Chuan Zhang, Jianping Wang, Li Zhao, Xiaochao Liang, Ding Liang, Jianfeng Yang, Zhenhua Zhao

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Article in European radiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

8 authors.

Dingbo ShuDepartment of Radiology, Shaoxing People's Hospital, Shaoxing, China.
Chuan ZhangSchool of Physical Education and Sport, Central China Normal University, Wuhan, China.
Jianping WangDepartment of Radiology, Shaoxing People's Hospital, Shaoxing, China.
Li ZhaoDepartment of Radiology, Shaoxing People's Hospital, Shaoxing, China.
Xiaochao LiangDepartment of Radiology, Shaoxing People's Hospital, Shaoxing, China.
Ding LiangDepartment of Radiology, Shaoxing People's Hospital, Shaoxing, China.
Jianfeng YangDepartment of Radiology, Shaoxing People's Hospital, Shaoxing, China.
Zhenhua ZhaoDepartment of Radiology, Shaoxing People's Hospital, Shaoxing, China. zhao2075@163.com.ORCID http://orcid.org/0000-0001-8952-8677

Funding

Central China Normal University faculty startup funding 31101222041National Natural Science Foundation of China 82301791Self-determined Research Funds of CCNU from the colleges' basic research and operation of MOE CCNU24JC040Zhejiang Medical and Health Technology Project 2024KY1703
6 · The paper itself

Abstract

objectivesThis study aimed to compare the diagnostic performance of virtual non-calcium (VNCa) imaging using photon-counting detector CT (PCD-CT) with MRI in assessing lumbar disc herniation (LDH) and intervertebral disc degeneration (IDD). MATERIALS AND

methodsPatients with low back pain underwent PCD-CT and MRI within 2 h. Quantitative analysis included VNCa-derived CT values and T2 relaxation times in manually placed regions of interest. Qualitative assessment focused on diagnostic accuracy for LDH and root impingement using grayscale and color-coded VNCa images.

resultsA total of 68 participants (51.8% female; mean age, 48 ± 14 years) were included. A significant negative correlation was observed between VNCa CT and MRI T2 values (r = -0.705, p < 0.001), strongest in the nucleus pulposus. Compared with grayscale CT, color-coded VNCa imaging significantly improved sensitivity (81-94%), specificity (84-95%), and accuracy (84-95%) for detecting LDH (all comparisons, p < 0.001); and improved sensitivity (82-94%), specificity (96-97%), and accuracy (93-96%) for diagnosing root impingement (all comparisons, p < 0.05).

conclusionsPCD-CT with VNCa imaging enables reliable quantification of disc water content and significantly improves diagnostic accuracy for LDH and root impingement. It offers a valuable alternative to MRI, especially in clinical settings where MRI is limited or unavailable. KEY POINTS: Question Can PCD-CT-based virtual non-calcium (VNCa) imaging serve as a reliable alternative to MRI for diagnosing lumbar disc herniation and assessing disc degeneration? Findings VNCa CT values strongly correlated with MRI T2 values, and VNCa images significantly improved diagnostic accuracy for lumbar disc herniation and nerve root impingement. Clinical relevance PCD-CT with VNCa imaging provides an accurate, rapid, and accessible assessment of lumbar disc herniation and disc degeneration, offering a valuable diagnostic alternative for patients unable to undergo MRI.

Indexed as

Intervertebral Disc DegenerationIntervertebral Disc DisplacementLumbar VertebraeTomography, X-Ray ComputedAdultFemaleHumansLow Back PainMagnetic Resonance ImagingMaleMiddle AgedSensitivity and SpecificityComputed tomographyDisc degenerationDisc herniationMagnetic resonance imagingPhotons

Identifiers

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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 Socratic graph.