Orbital volume measurements from magnetic resonance images using the techniques of manual planimetry and stereology.
Eye
orbit
planimetry
skull
stereology
Journal
National journal of maxillofacial surgery
ISSN: 0975-5950
Titre abrégé: Natl J Maxillofac Surg
Pays: India
ID NLM: 101578767
Informations de publication
Date de publication:
Historique:
received:
29
01
2020
revised:
08
05
2020
accepted:
15
05
2020
entrez:
12
10
2020
pubmed:
13
10
2020
medline:
13
10
2020
Statut:
ppublish
Résumé
Current volume measurement techniques, for the orbit, are time-consuming and involve complex assessments, which prevents their routine clinical use. In this study, we evaluate the applicability and efficacy of stereology and planimetry in orbital volume measurements using magnetic resonance imaging (MRI). Prospective imaging study using MRI. Sheep craniums and human subjects were evaluated. Water-filling measurements were performed in animal skulls, as the standard validation technique. Planimetry and stereology techniques were used in each dataset. Intraobserver and interobserver reliability testing were applied. In stereology customization, 1/6 systematic sampling scheme was determined as optimal with acceptable coefficient of error (3.09%) and low measurement time (1.2 min). In sheep craniums, the mean volume measured by water displacement, planimetry, and stereology was 17.81 ± 0.59 cm The optimized stereological method was found superior to manual planimetry in terms of user effort and time spent. Stereology sampling of 1/6 was successfully applied in human subjects and showed strong correlation with manual planimetry. However, optimized stereological method tended to overestimate the orbital volume by about 1 cc, a considerable limitation to be taken in clinical practice.
Identifiants
pubmed: 33041572
doi: 10.4103/njms.NJMS_9_20
pii: NJMS-11-20
pmc: PMC7518488
doi:
Types de publication
Journal Article
Langues
eng
Pagination
20-27Informations de copyright
Copyright: © 2020 National Journal of Maxillofacial Surgery.
Déclaration de conflit d'intérêts
There are no conflicts of interest.
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