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Cited by 110Radiomics and Machine Learning in Medical ImagingAI in cancer detectionRenal cell carcinoma treatment

The DOI matches its Crossref record; 43 of the 44 references it cites were found in a registry or an index.

Deep learning and radiomics: the utility of Google TensorFlow™ Inception in classifying clear cell renal cell carcinoma and oncocytoma on multiphasic CT

Coy, Heidi, Hsieh, Kevin, Wu, Willie, Nagarajan, Mahesh B., Young, Jonathan R., Douek, Michael L., Brown, Matthew S., Scalzo, Fabien, Raman, Steven S.·2019·Abdominal Radiology
DOI 10.1007/s00261-019-01929-0
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Abstract

Purpose Currently, all solid enhancing renal masses without microscopic fat are considered malignant until proven otherwise and there is substantial overlap in the imaging findings of benign and malignant renal masses, particularly between clear cell RCC (ccRCC) and benign oncocytoma (ONC). Radiomics has attracted increased attention for its utility in pre-operative work-up on routine clinical images. Radiomics based approaches have converted medical images into mineable data and identified prognostic imaging signatures that machine learning algorithms can use to construct predictive models by learning the decision boundaries of the underlying data distribution. The TensorFlow™ framework from Google is a state-of-the-art open-source software library that can be used for training deep learning neural networks for performing machine learning tasks. The purpose of this study was to investigate the diagnostic value and feasibility of a deep learning-based renal lesion classifier using open-source Google TensorFlow™ Inception in differentiating ccRCC from ONC on routine four-phase MDCT in patients with pathologically confirmed renal masses.Methods With institutional review board approval for this 1996 Health Insurance Portability and Accountability Act compliant retrospective study and a waiver of informed consent, we queried our institution's pathology, clinical, and radiology databases for histologically proven cases of ccRCC and ONC obtained between January 2000 and January 2016 scanned with a an intravenous contrast-enhanced four-phase renal mass protocol (unenhanced (UN), corticomedullary (CM), nephrographic (NP), and excretory (EX) phases). To extract features to be used for the machine learning model, the entire renal mass was contoured in the axial plane in each of the four phases, resulting in a 3D volume of interest (VOI) representative of the entire renal mass. We investigated thirteen different approaches to convert the acquired VOI data into a set of images that adequately represented each tumor which was used to train the final layer of the neural network model. Training was performed over 4000 iterations. In each iteration, 90% of the data were designated as training data and the remaining 10% served as validation data and a leave-one-out cross-validation scheme was implemented. Accuracy, sensitivity, specificity, positive (PPV) and negative predictive (NPV) values, and CIs were calculated for the classification of the thirteen processing modes.Results We analyzed 179 consecutive patients with 179 lesions (128 ccRCC and 51 ONC). The ccRCC cohort had a mean size of 3.8 cm (range 0.8-14.6 cm) and the ONC cohort had a mean lesion size of 3.9 cm (range 1.0-13.1 cm). The highest specificity and PPV (52.9% and 80.3%, respectively) were achieved in the EX phase when we analyzed the single mid-slice of the tumor in the axial, coronal and sagittal plane, and when we increased the number of mid-slices of the tumor to three, with an accuracy of 75.4%, which also increased the sensitivity to 88.3% and the PPV to 79.6%. Using the entire tumor volume also showed that classification performance was best in the EX phase with an accuracy of 74.4%, a sensitivity of 85.8% and a PPV of 80.1%. When the entire tumor volume, plus mid-slices from all phases and all planes presented as tiled images, were submitted to the final layer of the neural network we achieved a PPV of 82.5%.Conclusions The best classification result was obtained in the EX phase among the thirteen classification methods tested. Our proof of concept study is the first step towards understanding the utility of machine learning in the differentiation of ccRCC from ONC on routine CT images. We hope this could lead to future investigation into the development of a multivariate machine learning model which may augment our ability to accurately predict renal lesion histology on imaging.

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Research works printed but not linked: 3

  1. Guyon I, Elisseeff A. An Introduction to Variable and Feature Selection. J. Mach. Learn. 2003; 3(3): 1157–1182
  2. Aerts HJ, Velazquez ER, Leijenaar RT, et al. Decoding tumour phenotype by noninvasive imaging using a quantitative radiomics approach. Nat Commun 2014; 5: 4006. https://doi.org/10.1038/ncomms5006 · DOI · Paper page
  3. American Cancer Society (2018) Cancer facts & figures 2016. Atlanta: American Cancer Society

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Metadata

Authors
Coy, H., Hsieh, K., Wu, W., Nagarajan, M. B., Young, J. R., Douek, M. L., Brown, M. S., Scalzo, F., & Raman, S. S.
Affiliations
  • University of California, Los Angeles (US)
  • City Of Hope National Medical Center (US)
Corresponding author
Coy, Heidi
ORCID
Venue
Abdominal Radiology
Publisher
Springer Science and Business Media LLC
Published
2019-02-18
Volume
44
Issue
6
Pages
2009-2020
ISSN
  • 2366-004X (ISSN-L)
  • 2366-0058
DOI
10.1007/s00261-019-01929-0
OpenAlex
W2917694231
Cited by
110
References
44
Citations by year
2026: 9 · 2025: 12 · 2024: 12 · 2023: 22 · 2022: 15 · 2021: 17 · 2020: 17 · 2019: 6
FWCI
9.15
Type
journal article
Language
en
Open access
closed
Licence
www.springer.com/tdm (tdm)
Locations
  • Abdominal Radiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiomics and Machine Learning in Medical Imaging
  • Physical Sciences › Computer Science › Artificial Intelligence › AI in cancer detection
  • Health Sciences › Medicine › Oncology › Renal cell carcinoma treatment
Keywords
clear cell renal cell carcinoma, renal oncocytoma, multiphase CT, radiomics, deep learning, InceptionV3, TensorFlow, computer-aided diagnosis, benign versus malignant renal tumors, corticomedullary phase, nephrographic phase, excretory phase
MeSH terms
Deep Learning, Adult, Aged, Aged, 80 and over, Algorithms, Carcinoma, Renal Cell, Contrast Media, Diagnosis, Differential, Female, Humans, Iohexol, Kidney Neoplasms, Male, Middle Aged, Radiographic Image Interpretation, Computer-Assisted, Retrospective Studies, Sensitivity and Specificity, Software, Adenoma, Oxyphilic, Multidetector Computed Tomography

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