Evidence map›Paper›PMID 40682721›Full record

ArticleJapanese journal of radiology2025

Impact of tailored feedback on optimization and radiation dose reduction in coronary CT angiography: a comparative survey between 2021 and 2023 in Mie prefecture.

Suguru Araki, Kakuya Kitagawa, Miyuko Fujita, Shintaro Yamaguchi, Takanori Kokawa, Florian Michallek, Masafumi Takafuji, Satoshi Nakamura, Yasutaka Ichikawa, Hajime Sakuma

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Japanese journal of radiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Suguru ArakiDepartment of Radiology, Mie University Hospital, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
Kakuya KitagawaRegional Co-Creation Deployment Center, Mie Regional Plan Co-Creation Organization, Mie University, 1557 Kurimamachiyacho, Tsu, Mie, 514-8507, Japan. kakuya@med.mie-u.ac.jp.ORCID http://orcid.org/0000-0003-4402-6846
Miyuko FujitaDepartment of Radiology, Mie University Hospital, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
Shintaro YamaguchiDepartment of Radiology, Mie University Hospital, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
Takanori KokawaDepartment of Radiology, Mie University Hospital, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
Florian MichallekDepartment of Advanced Diagnostic Imaging, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
Masafumi TakafujiDepartment of Radiology, Mie University Hospital, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
Satoshi NakamuraDepartment of Advanced Diagnostic Imaging, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
Yasutaka IchikawaDepartment of Radiology, Mie University Hospital, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
Hajime SakumaDepartment of Radiology, Mie University Hospital, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDespite advances in dose-reduction strategies for coronary CT angiography (CCTA), a 2021 regional survey in Mie Prefecture revealed that the 75th percentile CT dose index volume (CTDIvol) remained 48 mGy-lower than Japan's 2020 diagnostic reference level (66 mGy), yet substantially exceeding international benchmarks (~ 25 mGy). Tailored feedback based on Society of Cardiovascular Computed Tomography (SCCT) guidelines was disseminated to each institution in 2022. This study aimed to evaluate the impact of these intervention on cardiac CT practice in Mie Prefecture in 2023. MATERIALS AND

methodsInstitutions with 64-row or greater multidetector CT scanners across Mie Prefecture were invited; 17 hospitals ultimately enrolled. Each site provided CCTA scan protocols and radiation dose data from 20 to 30 consecutive patients aged 20-80 years and weighing 50-70 kg. Examinations performed for coronary artery bypass graft evaluation or aortic valve assessment were excluded. Imaging parameters and radiation dose metrics were compared with a 2021 pre-feedback survey.

resultsData from 487 patients (median age: 71 years, 62% male) were analyzed. Of the 16 institutions participating in both surveys, 88% (14/16) modified protocols. Prospective ECG-triggered scanning increased (47-68%), retrospective scanning decreased (46-18%), and adoption of low tube potential rose (33-67%). The 75th percentile CTDIvol decreased from 48 to 31 mGy. No increase in adverse events or image quality deterioration was observed; rather, image quality exhibited an upward trend.

conclusionTailored regional feedback substantially improved CCTA radiation practices in Mie Prefecture, achieving significant dose reductions without compromising image quality or requiring equipment upgrades. These findings may inform protocol optimization efforts nationwide.

Indexed as

Computed Tomography AngiographyCoronary AngiographyRadiation DosageAdultAgedAged, 80 and overFeedbackFemaleHumansJapanMaleMiddle AgedSurveys and QuestionnairesYoung AdultCoronary computed tomography angiographyJapanProtocol optimizationRadiation doseRegional healthcare

Identifiers

PMID40682721
PMCPMC12575519

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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.