Back to Search Start Over

Repeatability and reproducibility of deep-learning-based liver volume and Couinaud segment volume measurement tool.

Authors :
Mojtahed, Amirkasra
Núñez, Luis
Connell, John
Fichera, Alessandro
Nicholls, Rowan
Barone, Angela
Marieiro, Mariana
Puddu, Anthony
Arya, Zobair
Ferreira, Carlos
Ridgway, Ged
Kelly, Matt
Lamb, Hildo J.
Caseiro-Alves, Felipe
Brady, J. Michael
Banerjee, Rajarshi
Source :
Abdominal Radiology. Jan2022, Vol. 47 Issue 1, p143-151. 9p.
Publication Year :
2022

Abstract

Purpose: Volumetric and health assessment of the liver is crucial to avoid poor post-operative outcomes following liver resection surgery. No current methods allow for concurrent and accurate measurement of both Couinaud segmental volumes for future liver remnant estimation and liver health using non-invasive imaging. In this study, we demonstrate the accuracy and precision of segmental volume measurements using new medical software, Hepatica™. Methods: MRI scans from 48 volunteers from three previous studies were used in this analysis. Measurements obtained from Hepatica™ were compared with OsiriX. Time required per case with each software was also compared. The performance of technicians and experienced radiologists as well as the repeatability and reproducibility were compared using Bland–Altman plots and limits of agreement. Results: High levels of agreement and lower inter-operator variability for liver volume measurements were shown between Hepatica™ and existing methods for liver volumetry (mean Dice score 0.947 ± 0.010). A high consistency between technicians and experienced radiologists using the device for volumetry was shown (± 3.5% of total liver volume) as well as low inter-observer and intra-observer variability. Tight limits of agreement were shown between repeated Couinaud segment volume (+ 3.4% of whole liver), segmental liver fibroinflammation and segmental liver fat measurements in the same participant on the same scanner and between different scanners. An underestimation of whole-liver volume was observed between three non-reference scanners. Conclusion: Hepatica™ produces accurate and precise whole-liver and Couinaud segment volume and liver tissue characteristic measurements. Measurements are consistent between trained technicians and experienced radiologists. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
2366004X
Volume :
47
Issue :
1
Database :
Academic Search Index
Journal :
Abdominal Radiology
Publication Type :
Academic Journal
Accession number :
154792848
Full Text :
https://doi.org/10.1007/s00261-021-03262-x