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Cited by 85Chronic Obstructive Pulmonary Disease (COPD) ResearchMedical Imaging Techniques and ApplicationsRadiation Dose and Imaging

The DOI matches its Crossref record; 25 of the 25 references it cites were found in a registry or an index.

Differences in Lung and Lobe Volumes between Supine and Standing Positions Scanned with Conventional and Newly Developed 320-Detector-Row Upright CT: Intra-Individual Comparison

Open access
Yamada, Yoshitake, Yamada, Minoru, Yokoyama, Yoichi, Tanabe, Akiko, Matsuoka, Shiho, Niijima, Yuki, Narita, Keiichi, Nakahara, Takehiro, Murata, Mitsuru, Fukunaga, Koichi, Chubachi, Shotaro, Jinzaki, Masahiro·2020·Respiration
DOI 10.1159/000507265PMC PMC7490509
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Abstract

Background: No clinical studies to date have compared unilateral lung or lobe volumes between the supine and standing positions. Objectives: To compare lung/lobe volumes on computed tomography (CT) between these two positions and evaluate the correlation between the total lung volume and total lung capacity (TLC) on pulmonary function tests (PFTs). Methods: Thirty-two asymptomatic volunteers underwent both conventional CT (supine position) and upright CT (standing position), during deep inspiration breath-hold, and PFTs on the same day. We measured lung/lobe volumes on CT in each position. Paired t tests were used for statistical analysis. Results: The volumes of the total lung (10.9% increase), right lung (10.3% increase), right upper lobe (8.6% increase), right lower lobe (14.6% increase), left lung (11.6% increase), left upper lobe (7.1% increase), and left lower lobe (16.0% increase) were significantly greater in the standing position than in the supine position (all p < 0.0001). The right middle lobe volume was similar between the two positions (p = 0.16). Intraclass correlation coefficients for agreement between total lung volumes on CT in the supine/standing positions and the TLC on PFT were 0.891/0.938, respectively. Conclusions: While the volumes of the bilateral upper and lower lobes and bilateral lungs were significantly greater in the standing than in the supine position, with lower lobes showing larger changes, the right middle lobe volume did not change significantly between positions. The total lung volume on upright CT in the standing position was more similar to TLC on PFT than that in the supine position.

Overview

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Crossref · 10.1159/000507265

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25 of 25 references verified0 citation errors · 0 not checkable

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  • The relative volumes of the lung lobes in upright position are: right upper lobe 17.6%, right middle lobe 8.5%, right lower lobe 27.2%, left upper lobe 22.4%, left lower lobe 24.3%.

    “Yamada et al. estimated the relative volumes of the lung lobes in upright position, where the right lung constitutes 53.3% (standard deviation (SD) = 1.3) with the right upper lobe (RUL): 17.6% (SD = 2.3), right middle lobe (RML): 8.5% (SD = 1.4), and right lower lobe (RLL) 27.2% (SD = 2.2). The left lung 46.7% (SD = 1.3), left upper lobe (LUL): 22.4% (SD = 2.0) and left lower lobe (LLL): 24.3% (S”

    From Distribution and characteristics of malignant tumours by lung lobe (2024) · cites this paper as [12]

  • The right lung constitutes 55% and the left 45% of the total lung volume.

    “The five lung lobes have different volumes, and the right lung constitutes 55% and the left 45% of the total lung volume [11–13].”

    From Distribution and characteristics of malignant tumours by lung lobe (2024) · cites this paper as [12]

  • The reference material from Yamada et al. used for the proportion of the volumes of the lobes is based on a limited number of healthy volunteers in another population than the Nordic.

    “Furthermore, the reference material from Yamada et al. used for the proportion of the volumes of the lobes is based on a limited number of healthy volunteers in another population than the Nordic.”

    From Distribution and characteristics of malignant tumours by lung lobe (2024) · cites this paper as [12]

  • The variation in Yamada et al.'s data is low, and the differences found in this study are pronounced, so the risk of erroneous conclusions from using those volumes seems small.

    “However, the variation in their data is low [12], and the differences found here are pronounced, thus, the risk of erroneous conclusions seems to be small.”

    From Distribution and characteristics of malignant tumours by lung lobe (2024) · cites this paper as [12]

  • The relative volume of the right upper lobe is 17.6% of total lung volume.

    “The right upper lobe comprised 31.2% of the tumours and 17.6% of the lung volume.”

    From Distribution and characteristics of malignant tumours by lung lobe (2024) · cites this paper as [12]

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Metadata

Authors
Yamada, Y., Yamada, M., Yokoyama, Y., Tanabe, A., Matsuoka, S., Niijima, Y., Narita, K., Nakahara, T., Murata, M., Fukunaga, K., Chubachi, S., & Jinzaki, M.
Affiliations
  • Keio University (JP)
  • Keio University Hospital (JP)
ORCID
Venue
Respiration
Publisher
S. Karger AG
Published
2020
Volume
99
Issue
7
Pages
598-605
ISSN
  • 0025-7931 (ISSN-L)
  • 1423-0356
DOI
10.1159/000507265
PMC
PMC7490509
OpenAlex
W3041774212
Cited by
85
References
25
Citations by year
2026: 8 · 2025: 15 · 2024: 13 · 2023: 8 · 2022: 20 · 2021: 13 · 2020: 8
FWCI
6.90
Type
journal article
Language
en
Open access
Licence
Locations
  • Respiration (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Society for the Promotion of Science (17H04266, 17K16482, 20K08056)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiation Dose and Imaging
Keywords
lung volume, 320-detector row CT, supine versus standing position, total lung capacity, pulmonary function tests, deep inspiration breath hold, right middle lobe, lung volume measurement
MeSH terms
Standing Position, Adult, Aged, Female, Humans, Lung, Male, Middle Aged, Reference Values, Radiography, Thoracic, Total Lung Capacity, Supine Position, Multidetector Computed Tomography, Healthy Volunteers

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