Open-source, fully-automated hybrid cardiac substructure segmentation: development and optimisation.

Breast cancer Cardiac substructures Cardiotoxicity Deep learning Image segmentation Lung cancer Radiotherapy

Journal

Physical and engineering sciences in medicine
ISSN: 2662-4737
Titre abrégé: Phys Eng Sci Med
Pays: Switzerland
ID NLM: 101760671

Informations de publication

Date de publication:
Mar 2023
Historique:
received: 19 09 2022
accepted: 30 01 2023
pubmed: 14 2 2023
medline: 24 3 2023
entrez: 13 2 2023
Statut: ppublish

Résumé

Radiotherapy for thoracic and breast tumours is associated with a range of cardiotoxicities. Emerging evidence suggests cardiac substructure doses may be more predictive of specific outcomes, however, quantitative data necessary to develop clinical planning constraints is lacking. Retrospective analysis of patient data is required, which relies on accurate segmentation of cardiac substructures. In this study, a novel model was designed to deliver reliable, accurate, and anatomically consistent segmentation of 18 cardiac substructures on computed tomography (CT) scans. Thirty manually contoured CT scans were included. The proposed multi-stage method leverages deep learning (DL), multi-atlas mapping, and geometric modelling to automatically segment the whole heart, cardiac chambers, great vessels, heart valves, coronary arteries, and conduction nodes. Segmentation performance was evaluated using the Dice similarity coefficient (DSC), mean distance to agreement (MDA), Hausdorff distance (HD), and volume ratio. Performance was reliable, with no errors observed and acceptable variation in accuracy between cases, including in challenging cases with imaging artefacts and atypical patient anatomy. The median DSC range was 0.81-0.93 for whole heart and cardiac chambers, 0.43-0.76 for great vessels and conduction nodes, and 0.22-0.53 for heart valves. For all structures the median MDA was below 6 mm, median HD ranged 7.7-19.7 mm, and median volume ratio was close to one (0.95-1.49) for all structures except the left main coronary artery (2.07). The fully automatic algorithm takes between 9 and 23 min per case. The proposed fully-automatic method accurately delineates cardiac substructures on radiotherapy planning CT scans. Robust and anatomically consistent segmentations, particularly for smaller structures, represents a major advantage of the proposed segmentation approach. The open-source software will facilitate more precise evaluation of cardiac doses and risks from available clinical datasets.

Identifiants

pubmed: 36780065
doi: 10.1007/s13246-023-01231-w
pii: 10.1007/s13246-023-01231-w
pmc: PMC10030448
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

377-393

Informations de copyright

© 2023. Crown.

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Auteurs

Robert N Finnegan (RN)

Northern Sydney Cancer Centre, Royal North Shore Hospital, St Leonards, NSW, Australia. robert.finnegan@sydney.edu.au.
Institute of Medical Physics, School of Physics, University of Sydney, Sydney, NSW, Australia. robert.finnegan@sydney.edu.au.
Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia. robert.finnegan@sydney.edu.au.

Vicky Chin (V)

Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.
Liverpool Cancer Therapy Centre, South Western Sydney Local Health District, Liverpool, NSW, Australia.
South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.

Phillip Chlap (P)

Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.
Liverpool Cancer Therapy Centre, South Western Sydney Local Health District, Liverpool, NSW, Australia.
South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.

Ali Haidar (A)

Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.
Liverpool Cancer Therapy Centre, South Western Sydney Local Health District, Liverpool, NSW, Australia.
South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.

James Otton (J)

South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.

Jason Dowling (J)

Institute of Medical Physics, School of Physics, University of Sydney, Sydney, NSW, Australia.
CSIRO Health and Biosecurity, The Australian e-Health and Research Centre, Herston, QLD, Australia.
School of Mathematical and Physical Sciences, University of Newcastle, Newcastle, NSW, Australia.

David I Thwaites (DI)

Institute of Medical Physics, School of Physics, University of Sydney, Sydney, NSW, Australia.
Radiotherapy Research Group, Leeds Institute of Medical Research, St James's Hospital and University of Leeds, Leeds, UK.

Shalini K Vinod (SK)

Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.
Liverpool Cancer Therapy Centre, South Western Sydney Local Health District, Liverpool, NSW, Australia.
South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.

Geoff P Delaney (GP)

Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.
Liverpool Cancer Therapy Centre, South Western Sydney Local Health District, Liverpool, NSW, Australia.
South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.

Lois Holloway (L)

Institute of Medical Physics, School of Physics, University of Sydney, Sydney, NSW, Australia.
Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.
Liverpool Cancer Therapy Centre, South Western Sydney Local Health District, Liverpool, NSW, Australia.
South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.
Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia.

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