Dataset Information

Evaluation of prognostic models developed using standardised image features from different PET automated segmentation methods.

ABSTRACT:

Background

Prognosis in oesophageal cancer (OC) is poor. The 5-year overall survival (OS) rate is approximately 15%. Personalised medicine is hoped to increase the 5- and 10-year OS rates. Quantitative analysis of PET is gaining substantial interest in prognostic research but requires the accurate definition of the metabolic tumour volume. This study compares prognostic models developed in the same patient cohort using individual PET segmentation algorithms and assesses the impact on patient risk stratification. Consecutive patients (n?=?427) with biopsy-proven OC were included in final analysis. All patients were staged with PET/CT between September 2010 and July 2016. Nine automatic PET segmentation methods were studied. All tumour contours were subjectively analysed for accuracy, and segmentation methods with ResultsOut of nine PET segmentation methods studied, clustering means (KM2), general clustering means (GCM3), adaptive thresholding (AT) and watershed thresholding (WT) methods were included for analysis. Known clinical prognostic factors (age, treatment and staging) were significant in all of the developed prognostic models. AT and KM2 segmentation methods developed identical prognostic models. Patient risk stratification was dependent on the segmentation method used to develop the prognostic model with up to 73 patients (17.1%) changing risk stratification group.

Conclusion

Prognostic models incorporating quantitative image features are dependent on the method used to delineate the primary tumour. This has a subsequent effect on risk stratification, with patients changing groups depending on the image segmentation method used.

SUBMITTER: Parkinson C

PROVIDER: S-EPMC5895559 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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Evaluation of prognostic models developed using standardised image features from different PET automated segmentation methods.

Parkinson Craig C Foley Kieran K Whybra Philip P Hills Robert R Roberts Ashley A Marshall Chris C Staffurth John J Spezi Emiliano E

EJNMMI research 20180411 1

<h4>Background</h4>Prognosis in oesophageal cancer (OC) is poor. The 5-year overall survival (OS) rate is approximately 15%. Personalised medicine is hoped to increase the 5- and 10-year OS rates. Quantitative analysis of PET is gaining substantial interest in prognostic research but requires the accurate definition of the metabolic tumour volume. This study compares prognostic models developed in the same patient cohort using individual PET segmentation algorithms and assesses the impact on pat ...[more]

PMID: 29644499

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Dataset Information

Evaluation of prognostic models developed using standardised image features from different PET automated segmentation methods.

Background

Conclusion

Publications

Evaluation of prognostic models developed using standardised image features from different PET automated segmentation methods.

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