Vector-field dynamic x-ray (VF-DXR) using optical flow method in patients with chronic obstructive pulmonary disease.

Forced Expiratory Volume Humans Lung Optic Flow Pulmonary Disease, Chronic Obstructive / diagnostic imaging X-Rays
Lung Optic flow Pulmonary disease (chronic obstructive) Radiography (thoracic) Respiratory function tests

Journal

European radiology experimental
ISSN: 2509-9280
Titre abrégé: Eur Radiol Exp
Pays: England
ID NLM: 101721752

Informations de publication

Date de publication:
31 01 2022
Historique:
received: 15 08 2021
accepted: 20 11 2021
entrez: 31 1 2022
pubmed: 1 2 2022
medline: 6 5 2022
Statut: epublish

Résumé

We assessed the difference in lung motion during inspiration/expiration between chronic obstructive pulmonary disease (COPD) patients and healthy volunteers using vector-field dynamic x-ray (VF-DXR) with optical flow method (OFM). We enrolled 36 COPD patients and 47 healthy volunteers, classified according to pulmonary function into: normal, COPD mild, and COPD severe. Contrast gradient was obtained from sequential dynamic x-ray (DXR) and converted to motion vector using OFM. VF-DXR images were created by projection of the vertical component of lung motion vectors onto DXR images. The maximum magnitude of lung motion vectors in tidal inspiration/expiration, forced inspiration/expiration were selected and defined as lung motion velocity (LMV). Correlations between LMV with demographics and pulmonary function and differences in LMV between COPD patients and healthy volunteers were investigated. Negative correlations were confirmed between LMV and % forced expiratory volume in one second (%FEV In the tidal inspiration, the lung parenchyma moved faster in COPD patients compared with healthy volunteers. VF-DXR was feasible for the assessment of lung parenchyma using LMV.

Sections du résumé

BACKGROUND
We assessed the difference in lung motion during inspiration/expiration between chronic obstructive pulmonary disease (COPD) patients and healthy volunteers using vector-field dynamic x-ray (VF-DXR) with optical flow method (OFM).
METHODS
We enrolled 36 COPD patients and 47 healthy volunteers, classified according to pulmonary function into: normal, COPD mild, and COPD severe. Contrast gradient was obtained from sequential dynamic x-ray (DXR) and converted to motion vector using OFM. VF-DXR images were created by projection of the vertical component of lung motion vectors onto DXR images. The maximum magnitude of lung motion vectors in tidal inspiration/expiration, forced inspiration/expiration were selected and defined as lung motion velocity (LMV). Correlations between LMV with demographics and pulmonary function and differences in LMV between COPD patients and healthy volunteers were investigated.
RESULTS
Negative correlations were confirmed between LMV and % forced expiratory volume in one second (%FEV
CONCLUSIONS
In the tidal inspiration, the lung parenchyma moved faster in COPD patients compared with healthy volunteers. VF-DXR was feasible for the assessment of lung parenchyma using LMV.

Identifiants

DOI: 10.1186/s41747-021-00254-w PMID: 35099604 PMC: PMC8802288
pubmed: 35099604
doi: 10.1186/s41747-021-00254-w
pii: 10.1186/s41747-021-00254-w
pmc: PMC8802288
doi:

Types de publication

Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

4

Subventions

Organisme : NCI NIH HHS
ID : R01 CA203636
Pays : United States
Organisme : NCI NIH HHS
ID : U01 CA209414
Pays : United States
Organisme : NHLBI NIH HHS
ID : R01 HL135142
Pays : United States
Organisme : NHLBI NIH HHS
ID : R01 HL111024
Pays : United States
Organisme : NHLBI NIH HHS
ID : R01 HL130974
Pays : United States

Informations de copyright

© 2022. The Author(s) under exclusive licence to European Society of Radiology.

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Auteurs

Takuya Hino (T)

Center for Pulmonary Functional Imaging, Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA. thino@bwh.harvard.edu.
ORCID: 0000-0002-8225-0737

Akinori Tsunomori (A)

R&D Promotion Division, Healthcare Business Headquarters, Konica Minolta, Inc., 2970 Ishikawa-machi, Hachioji-shi, Tokyo, Japan.

Akinori Hata (A)

Center for Pulmonary Functional Imaging, Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA.
Department of Radiology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, Japan.

Tomoyuki Hida (T)

Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, Japan.

Yoshitake Yamada (Y)

Department of Diagnostic Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan.

Masako Ueyama (M)

Department of Health Care, Fukujuji Hospital, Japan Anti-Tuberculosis Association, 3-1-24 Matsuyama, Kiyose, Tokyo, Japan.

Tsutomu Yoneyama (T)

R&D Promotion Division, Healthcare Business Headquarters, Konica Minolta, Inc., 2970 Ishikawa-machi, Hachioji-shi, Tokyo, Japan.

Atsuko Kurosaki (A)

Department of Diagnostic Radiology, Fukujuji Hospital, Japan Anti-Tuberculosis Association, 3-1-24 Matsuyama, Kiyose, Tokyo, Japan.

Takeshi Kamitani (T)

Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, Japan.

Kousei Ishigami (K)

Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, Japan.

Takenori Fukumoto (T)

R&D Promotion Division, Healthcare Business Headquarters, Konica Minolta, Inc., 2970 Ishikawa-machi, Hachioji-shi, Tokyo, Japan.

Shoji Kudoh (S)

Japan Anti-Tuberculosis Association, 1-3-12 Kanda-Misakicho, Chiyoda-ku, Tokyo, Japan.

Hiroto Hatabu (H)

Center for Pulmonary Functional Imaging, Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA.

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Classifications MeSH

questionsmedicales.fr › Phénomènes physiologiques respiratoires et circulatoires › Phénomènes physiologiques respiratoires › Ventilation pulmonaire › Volume expiratoire maximal par seconde › Vector-field dynamic x-ray (VF-DXR) using...
questionsmedicales.fr › Eucaryotes › Animaux › Chordés › Vertébrés › Mammifères › Eutheria › Primates › Haplorhini › Catarrhini › Hominidae › Humains › Vector-field dynamic x-ray (VF-DXR) using...
questionsmedicales.fr › Appareil respiratoire › Poumon › Vector-field dynamic x-ray (VF-DXR) using...
questionsmedicales.fr › Phénomènes physiologiques oculaires › Flux optique › Vector-field dynamic x-ray (VF-DXR) using...
questionsmedicales.fr › États, signes et symptômes pathologiques › Processus pathologiques › Caractéristiques de la maladie › Maladie chronique › Broncho-pneumopathie chronique obstructive › Vector-field dynamic x-ray (VF-DXR) using...
questionsmedicales.fr › Phénomènes physiques › Rayonnement › Rayonnement ionisant › Rayons X › Vector-field dynamic x-ray (VF-DXR) using...