Evidence map›Paper›PMID 41126945›Full record

ReviewPhysics and imaging in radiation oncology2025

Diffusion-weighted imaging-derived parameters as quantitative imaging biomarkers in magnetic resonance-guided radiotherapy: a systematic review.

Jing Yuan, Darren M C Poon, Oi Lei Wong, Cindy Xue, Amy Tien Yee Chang, Bin Yang

Abstract readReview
In one paragraph

Review in Physics and imaging in radiation oncology, 2025. 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. Maintaining quality of scientific peer-review and publishing inPhysics and imaging in radiation oncology · 2026
    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

6 authors.

Jing YuanResearch Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China.
Darren M C PoonComprehensive Oncology Centre, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China.
Oi Lei WongResearch Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China.
Cindy XueResearch Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China.
Amy Tien Yee ChangComprehensive Oncology Centre, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China.
Bin YangMedical Physics Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and purpose: Magnetic Resonance Linear Accelerators (MR-LINACs) have transformed radiotherapy by integrating high-resolution magnetic resonance imaging (MRI) with precise radiation delivery. Diffusion-Weighted Imaging (DWI)-derived parameters are promising non-invasive quantitative imaging biomarkers (QIBs) for MR-guided radiotherapy (MRgRT), primarily through apparent diffusion coefficient (ADC) and intravoxel incoherent motion (IVIM) models; however, their clinical utility and validation on MR-LINAC systems remain underexplored. This systematic review evaluates DWI's technical development, validation, and clinical role in MRgRT using MR-LINACs. Material and methods: Following PRISMA guidelines, PubMed/MEDLINE, Web of Science, and Scopus (2014-2024) were searched for English-language studies on DWI in MRgRT with MR-LINACs (0.35 T or 1.5 T). Eligible studies included technical and clinical research with phantoms, volunteers, or patients. Data on study characteristics, DWI protocols, validation metrics, and clinical endpoints were extracted and qualitatively synthesized; heterogeneity precluded Results: Thirty-four studies (11 at 0.35 T, 23 at 1.5 T) were included (29 prospective, 5 retrospective), with 28 involving patients (N = 484) across cancers. DWI, primarily via single-shot EPI (median time ∼4-5 min, b-values 0-2000 s/mm Discussion: DWI on MR-LINACs is technically available, feasible, and clinically promising for MRgRT. However, its QIB potential is limited by inconsistent protocols, hardware constraints, and preliminary clinical validation. Standardized protocols, hardware upgrades, and rigorous multi-center trials are essential to establish DWI-derived parameters as reliable QIBs for MRgRT.

Indexed as

Apparent Diffusion Coefficient (ADC)Diffusion Weighted Imaging (DWI)MR-guided radiotherapy (MRgRT)MR integrated linear accelerator (MR-LINAC)Quantitative imaging biomarkers alliance (QIBA)RepeatabilityReproducibility

Identifiers

PMID41126945
PMCPMC12537581

What OpenQuestion holds

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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.