Evidence map›Paper›PMID 35545505›Full record

ArticleMagnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine2023

Motility Mapping Quantification Using the Classical Optical Flow Algorithm for Small Bowel Crohn's Disease: Comparison with Balloon-assisted Enteroscopy Findings.

Yoshio Kitazume, Kento Takenaka, Kazuo Ohtsuka, Yasuo Ozawa, Koichiro Kimura, Ryosuke Watanabe, Junichi Tsuchiya, Toshimitsu Fujii, Masakazu Nagahori, Mamoru Watanabe and 1 more

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Article in Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.4field-weighted citation impact, top 33% of its field
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

2 citing papers in PubMed, 2 citations in OpenAlex.

  1. Review
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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

11 authors at 2 institutions in 2 countries.

Yoshio KitazumeDepartment of Diagnostic Radiology and Nuclear Medicine, Tokyo Medical and Dental University.
Kento TakenakaDepartment of Gastroenterology and Hepatology, Tokyo Medical and Dental University.
Kazuo OhtsukaDepartment of Gastroenterology and Hepatology, Tokyo Medical and Dental University.
Yasuo OzawaSystems Laboratories Corporation.
Koichiro KimuraDepartment of Diagnostic Radiology and Nuclear Medicine, Tokyo Medical and Dental University.
Ryosuke WatanabeDepartment of Diagnostic Radiology and Nuclear Medicine, Tokyo Medical and Dental University.
Junichi TsuchiyaDepartment of Diagnostic Radiology and Nuclear Medicine, Tokyo Medical and Dental University.
Toshimitsu FujiiDepartment of Gastroenterology and Hepatology, Tokyo Medical and Dental University.
Masakazu NagahoriDepartment of Gastroenterology and Hepatology, Tokyo Medical and Dental University.
Mamoru WatanabeDepartment of Gastroenterology and Hepatology, Tokyo Medical and Dental University.
Ukihide TateishiDepartment of Diagnostic Radiology and Nuclear Medicine, Tokyo Medical and Dental University.
Tokyo Medical and Dental University · JPAdvanced Research Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo quantify bowel motility shown on cine MRI using the classical optical flow algorithm and compare it with balloon-assisted enteroscopy (BAE) findings in patients with Crohn's disease (CD).

methodsThis retrospective study included 29 consecutive patients with CD who had undergone MR enterocolonography (MREC) and BAE between March and May 2017. We developed computer software to present motion vector magnitudes between consecutive cine MR images as bowel motility maps via a classical optical flow algorithm using the Horn-Schunck method. Cine MR images were acquired with a balanced steady-state free precession sequence in the coronal direction to capture small bowel motility. The small bowels were divided into three segments. In total, 63 bowel segments were assessed via BAE and MREC. Motility scores on the maps, simplified MR index of activity (sMaRIA), and MREC score derived from a 5-point MR classification were assessed independently by two radiologists and compared with the CD endoscopic index of severity (CDEIS). Correlations were assessed using Spearman's rank coefficient. The areas under the receiver-operating characteristic curve (AUCs) of motility score for differentiating CDEIS was calculated; a P value < 0.05 was considered statistically significant.

resultsMotility score was negatively correlated with CDEIS (r = -0.59 [P < 0.001] and -0.54 [P < 0.001]), and the AUCs of motility scores for detecting CDEIS ≥ 3 were 88.2% and 78.6% for observers 1 and 2, respectively. There were no significant differences in the AUC for detecting CDEIS ≥ 3 and CDEIS ≥ 12 between motility and sMaRIA or MREC score.

conclusionThe motility map was feasible for locally quantifying the bowel motility. In addition, the motility score on the map reflected the endoscopic inflammatory activity of each small bowel segment in patients with CD; hence, it could be used as a tool in objectively interpreting cine MREC to predict inflammatory activity in CD.

Indexed as

Crohn DiseaseOptic FlowAlgorithmsHumansIntestine, SmallMagnetic Resonance ImagingRetrospective StudiesSeverity of Illness Indexballoon-assisted enteroscopycine magnetic resonance imagingmotilityoptical flowsmall bowel

Identifiers

PMID35545505
PMCPMC10449560
OpenAlexW4280514686

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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.