Kidney cortex segmentation in 2D CT with U-Nets ensemble aggregation.
Diagn Interv Imaging
; 100(4): 211-217, 2019 Apr.
Article
en En
| MEDLINE
| ID: mdl-30926445
ABSTRACT
PURPOSE:
This work presents our contribution to one of the data challenges organized by the French Radiology Society during the Journées Francophones de Radiologie. This challenge consisted in segmenting the kidney cortex from coronal computed tomography (CT) images, cropped around the cortex. MATERIALS ANDMETHODS:
We chose to train an ensemble of fully-convolutional networks and to aggregate their prediction at test time to perform the segmentation. An image database was made available in 3 batches. A first training batch of 250 images with segmentation masks was provided by the challenge organizers one month before the conference. An additional training batch of 247 pairs was shared when the conference began. Participants were ranked using a Dice score.RESULTS:
The segmentation results of our algorithm match the renal cortex with a good precision. Our strategy yielded a Dice score of 0.867, ranking us first in the data challenge.CONCLUSION:
The proposed solution provides robust and accurate automatic segmentations of the renal cortex in CT images although the precision of the provided reference segmentations seemed to set a low upper bound on the numerical performance. However, this process should be applied in 3D to quantify the renal cortex volume, which would require a marked labelling effort to train the networks.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Inteligencia Artificial
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Tomografía Computarizada por Rayos X
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Corteza Renal
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Diagn Interv Imaging
Año:
2019
Tipo del documento:
Article