Intra-observer repeatability when assessing the foetal urinary bladder volume by the Virtual Organ Computer-aided AnaLysis and SUM-OF-CYLINDERS methods: A pilot study
Artikel i vetenskaplig tidskrift, 2017

Introduction: The aim of this study was to compare the intra-observer repeatability when using two different methods for estimating the volume of foetal urinary bladders.

Method: The urinary bladders of 20 foetuses were documented by three-dimensional ultrasound. Standard deviation was compared when the volumes of identical bladder images were repeatedly estimated using the Virtual Organ Computer-aided AnaLysis and the experimental SUM-OF-CYLINDERS methods.

Results: No systematic deviation was found between the estimated volumes when using these two methods. Standard deviation was smaller for the SUM-OF-CYLINDERS compared to the Virtual Organ Computer-aided AnaLysis method (p < 0.0001). In relation to bladder volumes of 5–25 ml, standard deviation was 11–14% for the Virtual Organ Computer-aided AnaLysis and 4–5% for the SUM-OF-CYLINDERS method.

Conclusions: Using three-dimensional ultrasound images adapted for the Virtual Organ Computer-aided AnaLysis method, foetal urinary bladder volumes can also be estimated using the SUM-OF-CYLINDERS method. The SUM-OF-CYLINDERS method employs technical advances which may result in a lower standard deviation and therefore higher intra-observer repeatability.

ultrasonography

diagnostic technique and procedure

Foetus

urinary bladder

reliability

Författare

M. Fagerquist

NU-sjukvården

Innlandet Hospital Trust

Vivek Sethi

Akershus University Hospital

E. Skytteren

Innlandet Hospital Trust

Anders Odén

Chalmers, Matematiska vetenskaper, Tillämpad matematik och statistik

Ultrasound

1742-271X (ISSN)

Vol. 25 3 156-165

Ämneskategorier

Radiologi och bildbehandling

Datorseende och robotik (autonoma system)

Medicinsk bildbehandling

DOI

10.1177/1742271X17709854

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Senast uppdaterat

2021-01-12