Evidence map›Paper›PMID 42694810›Full record

ArticleJournal of clinical imaging science2026

Comparative evaluation of zoomed and parallel diffusion-weighted imaging: A phantom study.

Akiyoshi Iwase, Yasuo Takatsu, Naoki Ohno, Azusa Kitao, Tosiaki Miyati

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Article in Journal of clinical imaging science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Akiyoshi IwaseDivision of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
Yasuo TakatsuDepartment of Molecular Imaging, Clinical Collaboration Unit, School of Medical Sciences, Fujita Health University, Toyoake, Aichi, Japan.ORCID https://orcid.org/0000-0002-4384-089X
Naoki OhnoDivision of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
Azusa KitaoDivision of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
Tosiaki MiyatiDivision of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.ORCID https://orcid.org/0000-0001-6120-2990

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objectives: Single-shot echo-planar imaging sequences with parallel imaging are widely used for diffusion-weighted imaging (DWI). However, when small fields of view and higher phase-encoding reduction ratios (PRs) are applied, image quality may deteriorate because of imperfections in the unfolding process of parallel imaging. Previous studies have suggested that Zoomed DWI (Zoom-DWI) may address this limitation. Therefore, we compared Zoom-DWI with parallel DWI (Parallel-DWI) across different PRs to evaluate image quality. Material and Methods: Zoom-DWI and Parallel-DWI were performed using identical acquisition times and imaging parameters at different PRs. Signal-to-noise ratio (SNR), image uniformity, slice thickness, spatial resolution, and image distortion were evaluated. Results: At a PR of 66.6%, the SNR of Zoom-DWI was approximately 1.4-3.3-fold higher than that of Parallel-DWI at the image center, where reconstruction errors in parallel imaging become more pronounced as PR increases. Image uniformity was also higher in Zoom-DWI than in Parallel-DWI, and the difference increased by approximately 41.0% at a PR of 66.6%. Slice thickness, spatial resolution, and image distortion were comparable between the two methods. Conclusion: In this phantom study, Zoom-DWI demonstrated higher SNR and greater image uniformity than Parallel-DWI, particularly at higher PRs and in the central image region.

Indexed as

Image uniformityParallel imagingPhantom studySignal-to-noise ratioZoomed diffusion-weighted imaging

Identifiers

PMID42694810
PMCPMC13540797

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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.