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Construction and evaluation of a gated high-resolution neural network for automatic brain metastasis detection and segmentation

  • Oncology
  • Published:
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Abstract

Objectives

To construct and evaluate a gated high-resolution convolutional neural network for detecting and segmenting brain metastasis (BM).

Methods

This retrospective study included craniocerebral MRI scans of 1392 patients with 14,542 BMs and 200 patients with no BM between January 2012 and April 2022. A primary dataset including 1000 cases with 11,686 BMs was employed to construct the model, while an independent dataset including 100 cases with 1069 BMs from other hospitals was used to examine the generalizability. The potential of the model for clinical use was also evaluated by comparing its performance in BM detection and segmentation to that of radiologists, and comparing radiologists’ lesion detecting performances with and without model assistance.

Results

Our model yielded a recall of 0.88, a dice similarity coefficient (DSC) of 0.90, a positive predictive value (PPV) of 0.93 and a false positives per patient (FP) of 1.01 in the test set, and a recall of 0.85, a DSC of 0.89, a PPV of 0.93, and a FP of 1.07 in dataset from other hospitals. With the model’s assistance, the BM detection rates of 4 radiologists improved significantly, ranging from 5.2 to 15.1% (all p < 0.001), and also for detecting small BMs with diameter ≤ 5 mm (ranging from 7.2 to 27.0%, all p < 0.001).

Conclusions

The proposed model enables accurate BM detection and segmentation with higher sensitivity and less time consumption, showing the potential to augment radiologists’ performance in detecting BM.

Clinical relevance statement

This study offers a promising computer-aided tool to assist the brain metastasis detection and segmentation in routine clinical practice for cancer patients.

Key Points

The GHR-CNN could accurately detect and segment BM on contrast-enhanced 3D-T1W images.

The GHR-CNN improved the BM detection rate of radiologists, including the detection of small lesions.

The GHR-CNN enabled automated segmentation of BM in a very short time.

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Abbreviations

BM:

Brain metastasis

CAD:

Computer-assisted diagnosis

CNN:

Convolutional neural network

DL:

Deep learning

DSC:

Dice similarity coefficient

GHR-CNN:

Gated high-resolution convolutional neural network

ML:

Machine learning

PPV:

Positive predictive value

SRT:

Stereotactic radiotherapy

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Funding

This work was supported by National Key R&D Program of China (Project Nos. 2022YFC2009901, 2022YFC2009900), the National Natural Science Foundation of China (Grant Nos. 82120108014, 82071908 and 82101998), CAMS Innovation Fund for Medical Sciences (CIFMS) (Project No. 2021-I2M-C&T-A-022), Chengdu Science and Technology Office, major technology application demonstration project (Project Nos. 2022-YF09-00062-SN, 2022-GH03-00017-HZ) and Sichuan Science and Technology Program (Grant Nos. 2021JDTD0002). Dr. Su Lui acknowledges the support from Humboldt Foundation Friedrich Wilhelm Bessel Research Award and Chang Jiang Scholars (Program No. T2019069).

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Correspondence to Su Lui.

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Guarantor

The scientific guarantor of this publication is Professor Su Lui, MD, PhD, from Department of Radiology, West China Hospital, Sichuan University.

Conflict of interest

The authors have no relevant conflicts of interest to disclose.

Statistics and biometry

No complex statistical methods were necessary for this paper.

Informed consent

The institutional review board waived the requirement to obtain informed patient consent for this retrospective study.

Ethical approval

Institutional Review Board approval was obtained.

Methodology

• retrospective

• diagnostic or prognostic study

• performed at multiple institutions

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Qu, J., Zhang, W., Shu, X. et al. Construction and evaluation of a gated high-resolution neural network for automatic brain metastasis detection and segmentation. Eur Radiol 33, 6648–6658 (2023). https://doi.org/10.1007/s00330-023-09648-3

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  • DOI: https://doi.org/10.1007/s00330-023-09648-3

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