Evidence map›Paper›PMID 38011586›Full record

Observational studyJournal of applied clinical medical physics2024

Refined scan protocol for the evaluation of pulmonary perfusion standardized image quality and reduced radiation dose in dynamic chest radiography.

Kenta Takakura, Yuzo Yamasaki, Taku Kuramoto, Satoshi Yoshidome, Tomoyuki Hida, Takeshi Kamitani, Hideki Yoshikawa, Toyoyuki Kato, Kousei Ishigami

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

Observational study in Journal of applied clinical medical physics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Article
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  4. Observational
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

9 authors.

Kenta TakakuraDivision of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan.
Yuzo YamasakiDepartment of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Taku KuramotoDepartment of Radiological Technology, Faculty of Health Sciences, Kobe Tokiwa University, Kobe, Japan.
Satoshi YoshidomeDivision of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan.
Tomoyuki HidaDepartment of Radiology, Onga Nakama Medical Association Onga Hospital, Fukuoka, Japan.
Takeshi KamitaniDepartment of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Hideki YoshikawaDivision of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan.
Toyoyuki KatoDivision of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan.
Kousei IshigamiDepartment of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.

Funding

Japan Society for the Promotion of Science JP20K16728Japan Society for the Promotion of Science JP23K07111Konica Minolta Science and Technology Foundation
6 · The paper itself

Abstract

purposeDynamic chest radiography (DCR) is a novel imaging technique used to noninvasively evaluate pulmonary perfusion. However, the standard DCR protocol, which is roughly adapted to the patient's body size, occasionally causes over- or underexposure, which could influence clinical evaluation. Therefore, we proposed a refined protocol by increasing the number of patient body mass index (BMI) categories from three to seven groups and verified its usefulness by comparing the image sensitivity indicators (S-values) and entrance surface doses (ESDs) of the conventional protocol with those of our refined protocol.

methodsThis retrospective observational study included 388 datasets (standing position, 224; supine position, 164) for the conventional protocol (December 2019-April 2021) and 336 datasets (standing position, 233; supine position, 103) for the refined protocol (June-November 2021). The conventional protocol (BMI-3 protocol) divided the patients into three BMI groups (BMI < 17, 17≤BMI < 25, and BMI ≥ 25 kg/m

resultsThe CVs of the S-values in the BMI-7 protocol group were significantly lower than those in the BMI-3 protocol group for the standing (28.8% vs. 16.7%; p < 0.01) and supine (24.5% vs. 17.7%; p < 0.01) positions. The ESDs of patients scanned using the BMI-7 protocol were significantly lower than those scanned using the BMI-3 protocol in the standing (1.3 vs. 1.1 mGy; p < 0.01) and supine positions (2.5 vs. 1.6 mGy; p < 0.01), although the mean BMI of the two groups were similar.

conclusionWe introduced the BMI-7 protocol and demonstrated its standardized image quality and reduced radiation exposure in patients undergoing DCR.

Indexed as

Radiation ExposureHumansPerfusionRadiation DosageRadiographyRadionuclide ImagingRetrospective Studiesbody mass indexdynamic chest radiographypulmonary perfusionscan protocol

Identifiers

PMID38011586
PMCPMC10795455

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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.