Measurements of Orbital Volume Change Using Computed Tomography in Isolated Orbital Blowout Fractures

Kwon, Jae Hwan; Barrera, José E.; Jung, Tae‐Young; Most, Sam P.

doi:10.1001/archfacial.2009.77

Cited by 40 publications

(29 citation statements)

References 16 publications

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“…Since the introduction of three-dimensional imagining techniques, the measurement of orbital morphology has been widely used for patients suffering hypertelorism [8], midface hypoplasia [9], orbital fractures [10] as well as, post oncological defects [11]. These measurements were calculated either as a distance between points (landmarks) or as a volumetric value.…”

Section: Discussionmentioning

confidence: 99%

“…The first method offers quick results, though frequently, they cannot be compared between different samples or between different clinicians due to the lack of standardized reproducible landmarks. Moreover, the procedure of volumetric measurement requires a manual delineation of a whole series of CT slices, a time consuming task, which results in data simply relating to volume change without any information in the direction [6,10].…”

Section: Discussionmentioning

confidence: 99%

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Three-Dimensional Cephalometric Analysis of Orbital Morphology Modification for Midface Correction Surgery

Smektała

Staniszewska²,

Sławińska

et al. 2015

J. Maxillofac. Oral Surg.

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Objectives The aim of this study was to create an evidence-based three-dimensional cephalometric analysis of orbits in order to perform time-efficient measurements of postoperative orbital morphology changes. Materials and MethodsThe authors used 23 (11 bilateral and 1 unilateral) anatomical landmarks. Based on these, 6 planes, 12 angular and 16 linear measurements were determined. A three dimensional analysis was performed twice by two observers on pre and post-operative computed tomography scans of six patients who had undergone midface advancement. The mean, minimal and maximal difference, as well as standard deviation (SD) and intraclass correlation coefficient (ICC) for the inter-and intraobserver landmark selection reliability were calculated.Additionally, the mean, minimal, maximal difference and standard deviation between pre-and post-operative angular and linear measurements were calculated to examine a connection between the established measurements and any morphological change. Results The inter and intra-examiner accuracy of all landmarks for three axes was [0.9 ICC. Despite excellent inter and intra-examiner agreement (\2.49 mm ± 2.05 mm SD) for the landmark selection, linear and angular measurements showed a mismatch, the mean SD for angular measurements was found to be 8.2°and the linear 3.04 mm. Discussion The possible causes of linear and angular measurement discrepancies are discussed and the future direction for the development of three-dimensional cephalometric analysis of orbits proposed.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Cephalometric Analysis of Orbital Morphology Modification for Midface Correction Surgery

Smektała

Staniszewska²,

Sławińska

et al. 2015

J. Maxillofac. Oral Surg.

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“…The establishment of a universal list of repeatable landmarks could help to determine and evaluate linear, angular and proportional measurements. This list could also enable the inclusion of volumetric and surface measurements in 3D cephalometry, which could be helpful in airway or orbital volume analysis for syndromic or post-injury deformities (Imai et al, 2013;Kwon et al, 2009;Nout et al, 2012), as well as in soft tissue surface analysis for orthognathic surgery (Meller et al, 2005;Xia et al, 2000). The theoretical considerations could further include a combination of 3D cephalometry and finite element analysis, which could allow for more accurate prediction of the effects of surgical distraction or orthodontic expansion (Araugio et al, 2013;Remmler et al, 1998).…”

Section: Discussionmentioning

confidence: 99%

Experimental and clinical assessment of three-dimensional cephalometry: A systematic review

Smektała

Jędrzejewski

Szyndel

et al. 2014

Journal of Cranio-Maxillofacial Surgery

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“…Multiple radiologic diagnostic criteria developed using computed tomography (CT) have tried to establish the relationships between the images observed and the associated clinical signs and symptoms. [3][4][5][6][7][8][9][10] Some of these criteria have already demonstrated their utility and reliability for a therapeutic decision-making strategy for pure BOFs. 6,10 Studies have been mainly focused on the prevalence of diplopia in patients with BOFs, the possible association between orbital volume and severity of enophthalmos development and the possible beneficial effect of surgical treatment on the functional status of ocular motility.…”

mentioning

confidence: 99%

Can a Specific Computed Tomography-Based Assessment Predict the Ophthalmological Outcome in Pure Orbital Floor Blowout Fractures?

Bruneau

Haller

Courvoisier

et al. 2016

Journal of Craniofacial Surgery

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The aim of this study was to determine the predictive value of a specific computed tomography (CT)-based assessment for the final functional ophthalmological outcome in pure orbital floor blowout fractures. Data of 34 consecutive patients with pure blowout fractures who had undergone a period of at least 6 months of medical and ophthalmological follow-up were analyzed. The following 3 CT scan-based parameters were included: area ratio of the fractured orbital floor (RF), maximum height of periorbital tissue herniation (MH), and a 4-grade muscular subscore (MSS) describing the inferior rectus muscle displacement relative to the orbital floor level. The orthoptic complications (diplopia, enophthalmos, and ocular motility restriction) were evaluated by an experienced strabologist. The CT parameters' predictive value was analyzed using receiver operating characteristic curves and area under the curve (AUC), logistic regression, and Spearman correlation.The RF had a significant predictive value for enophthalmos appearance (AUC ¼ 0.75, P ¼ 0.02), and MH for diplopia (AUC ¼ 0.80, P ¼ 0.03). Among patients with complications, the relevance of MSS and MH as well as the severity of vertical deviation were also clinically strongly associated (rho ¼ À0.52 and À0.56).Our study revealed the significantly predictive value of RF for occurrence of enophthalmos and of MH for diplopia persistence. Although statistically unable to predict the occurrence of ocular motility restriction, MH and MSS were clinically strongly correlated with the severity of ocular deviation limitations.

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Measurements of Orbital Volume Change Using Computed Tomography in Isolated Orbital Blowout Fractures

Abstract: Consistent volume measurements can be obtained using different 3-D image analysis programs. Measuring preoperative and postoperative volume changes and postoperative reduction can ensure a good surgical result and thereby decrease the incidence of enophthalmos.

Cited by 40 publications

References 16 publications

Three-Dimensional Cephalometric Analysis of Orbital Morphology Modification for Midface Correction Surgery

Three-Dimensional Cephalometric Analysis of Orbital Morphology Modification for Midface Correction Surgery

Experimental and clinical assessment of three-dimensional cephalometry: A systematic review

Can a Specific Computed Tomography-Based Assessment Predict the Ophthalmological Outcome in Pure Orbital Floor Blowout Fractures?

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