open access

Vol 58, No 2 (2007)
Original papers
Published online: 2007-03-13
Submitted: 2013-02-15
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Assessment of the volume of intraorbital structures using the numerical segmentation image technique (NSI): the extraocular muscles

Agata Majos, Piotr Grzelak, Wojciech Młynarczyk, Ludomir Stefańczyk
Endokrynologia Polska 2007;58(2):110-115.

open access

Vol 58, No 2 (2007)
Original papers
Published online: 2007-03-13
Submitted: 2013-02-15

Abstract

Introduction: In recent years the use of computer systems has allowed numerical analysis of medical images to be introduced and has speeded up the conversion of numerical data into clinically valuable information. The creation of a software application that could almost automatically calculate the volume of anatomical structures imaged by MRI has seemed possible. The aim of our study was to determine the clinical usefulness of an numerical segmentation image technique (NSI) software application in estimating the volume of extraocular muscles.
Material and methods: The study group was formed of 45 patients (90 orbits). All the patients underwent MRI examinations of the orbits by a 1.5 T scanner using a head coil. The degree of exophthalmos was determined clinically and radiologically in relation to the interzygomaticus line. The quantitative assessment of all eye muscles was carried out using the NSI application, a new software program introduced by the authors.
Results: A close correlation between muscle volume and the degree of exophthalmos was revealed and confirmed by statistical analysis (r = 0.543, p = 3.13396E-08) in agreement with other papers.
Conclusions: The NSI software program is an application which offers a reliable and precise estimation of eye muscle volume. It is therefore useful in the diagnosis of the pathological processes leading to exophthalmos. It has special clinical value for monitoring discrete volume changes of muscles during treatment.

Abstract

Introduction: In recent years the use of computer systems has allowed numerical analysis of medical images to be introduced and has speeded up the conversion of numerical data into clinically valuable information. The creation of a software application that could almost automatically calculate the volume of anatomical structures imaged by MRI has seemed possible. The aim of our study was to determine the clinical usefulness of an numerical segmentation image technique (NSI) software application in estimating the volume of extraocular muscles.
Material and methods: The study group was formed of 45 patients (90 orbits). All the patients underwent MRI examinations of the orbits by a 1.5 T scanner using a head coil. The degree of exophthalmos was determined clinically and radiologically in relation to the interzygomaticus line. The quantitative assessment of all eye muscles was carried out using the NSI application, a new software program introduced by the authors.
Results: A close correlation between muscle volume and the degree of exophthalmos was revealed and confirmed by statistical analysis (r = 0.543, p = 3.13396E-08) in agreement with other papers.
Conclusions: The NSI software program is an application which offers a reliable and precise estimation of eye muscle volume. It is therefore useful in the diagnosis of the pathological processes leading to exophthalmos. It has special clinical value for monitoring discrete volume changes of muscles during treatment.
Get Citation

Keywords

exophthalmos; volume calculation; extraocular muscles; computer applications

About this article
Title

Assessment of the volume of intraorbital structures using the numerical segmentation image technique (NSI): the extraocular muscles

Journal

Endokrynologia Polska

Issue

Vol 58, No 2 (2007)

Pages

110-115

Published online

2007-03-13

Bibliographic record

Endokrynologia Polska 2007;58(2):110-115.

Keywords

exophthalmos
volume calculation
extraocular muscles
computer applications

Authors

Agata Majos
Piotr Grzelak
Wojciech Młynarczyk
Ludomir Stefańczyk

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