Title
Deep neural network ensemble for on-the-fly quality control-driven segmentation of cardiac MRI T1 mapping
Date Issued
01 July 2021
Access level
open access
Resource Type
journal article
Author(s)
Hann E.
Popescu I.A.
Zhang Q.
Barutçu A.
Neubauer S.
Ferreira V.M.
Piechnik S.K.
Oxford University Centre for Clinical Magnetic Resonance Research (OCMR)
Publisher(s)
Elsevier B.V.
Abstract
Recent developments in artificial intelligence have generated increasing interest to deploy automated image analysis for diagnostic imaging and large-scale clinical applications. However, inaccuracy from automated methods could lead to incorrect conclusions, diagnoses or even harm to patients. Manual inspection for potential inaccuracies is labor-intensive and time-consuming, hampering progress towards fast and accurate clinical reporting in high volumes. To promote reliable fully-automated image analysis, we propose a quality control-driven (QCD) segmentation framework. It is an ensemble of neural networks that integrate image analysis and quality control. The novelty of this framework is the selection of the most optimal segmentation based on predicted segmentation accuracy, on-the-fly. Additionally, this framework visualizes segmentation agreement to provide traceability of the quality control process. In this work, we demonstrated the utility of the framework in cardiovascular magnetic resonance T1-mapping - a quantitative technique for myocardial tissue characterization. The framework achieved near-perfect agreement with expert image analysts in estimating myocardial T1 value (r=0.987, p<.0005; mean absolute error (MAE)=11.3ms), with accurate segmentation quality prediction (Dice coefficient prediction MAE=0.0339) and classification (accuracy=0.99), and a fast average processing time of 0.39 second/image. In summary, the QCD framework can generate high-throughput automated image analysis with speed and accuracy that is highly desirable for large-scale clinical applications.
Volume
71
Language
English
OCDE Knowledge area
Radiología, Medicina nuclear, Imágenes médicas
Subjects
Scopus EID
2-s2.0-85103695127
PubMed ID
Source
Medical Image Analysis
ISSN of the container
13618415
Sponsor(s)
A patent is filed for this work. EH and RAG acknowledge support for their DPhil studies from the Clarendon Fund, and the Radcliffe Department of Medicine, University of Oxford. EH acknowledges donation of a GPU from NVIDIA for this work. IAP, SKP, VMF and SN acknowledge support from the National Institute for Health Research (NIHR) Oxford Biomedical Research Centre at The Oxford University Hospitals NHS Foundations Trust, University of Oxford, UK. SKP, VMF and SN acknowledge the British Heart Foundation (BHF) Centre of Research Excellence, Oxford. QZ and VMF are supported by the BHF.
Sources of information:
Directorio de Producción Científica
Scopus