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/archfaci.2009.77

Cited by 14 publications

(5 citation statements)

References 15 publications

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“…Computerized temporal muscle measurements were made with the Vitrea program (Vitrea 2 Vital v4.1.8.0, Vital Images Inc., Minnetonka, MN), which is designed to measure volumetric parameters of cranial CTA images. 10,11 Temporal muscle volumes were calculated by marking the entire temporal muscle, including the origin and insertion sites, in the soft-tissue window using the "organ selection tool" option in all CTA images (►Fig. 2).…”

Section: Measurement Of Temporal Muscle Volumementioning

confidence: 99%

Effects of Modified Osteoplastic Pterional Craniotomy on Temporal Muscle Volume and Frontal Muscle Nerve Function

Seçer

Çam

Gökbel³

et al. 2021

J Neurol Surg B Skull Base

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Introduction Pterional craniotomy is a surgical approach frequently used in aneurysm and skull base surgery. Pterional craniotomy may lead to cosmetic and functional problems, such as eyebrow drop due to facial nerve frontal branch damage, temporal muscle atrophy, and temporomandibular joint pain. The aim was to compare the postoperative effects of our modified osteoplastic craniotomy with classical pterional craniotomy in terms of any change in volume of temporal muscle and in the degree of frontal muscle nerve damage. Materials and Methods Aneurysm cases were operated with either modified osteoplastic pterional craniotomy or free bone flap pterional craniotomy according to the surgeon's preference. Outcomes were compared in terms of temporal muscle volume and frontal muscle nerve function 6 months postoperatively. Results Preoperative temporal muscle volume in the modified osteoplastic pterional and free bone flap pterional craniotomy groups were not different (p > 0.05). However, significantly less atrophy was observed in the postoperative temporal muscle volume of the osteoplastic group compared with the classical craniotomy group (p < 0.001). In addition, when comparing frontal muscle nerve function there was less nerve damage in the modified osteoplastic pterional craniotomy group compared with the classical craniotomy group, although this did not reach significance (p > 0.05). Conclusion Modified osteoplastic pterional craniotomy significantly reduced atrophy of temporal muscle and caused proportionally less frontal muscle nerve damage compared with pterional craniotomy, although this latter outcome was not significant. These findings suggest that osteoplastic craniotomy may be a more advantageous intervention in cosmetic and functional terms compared with classical pterional craniotomy.

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Section: Measurement Of Temporal Muscle Volumementioning

confidence: 99%

Effects of Modified Osteoplastic Pterional Craniotomy on Temporal Muscle Volume and Frontal Muscle Nerve Function

Seçer

Çam

Gökbel³

et al. 2021

J Neurol Surg B Skull Base

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“…A wide range of software has been designed and applied for CT-based volumetric assessment over the years that have contributed significantly in this evolution and opened up scope for further research. [11][12][13][14][15][16][17][18][19][20] Difference or not in the orbital volume between two sides has also been studied extensively on dry skulls. [21][22][23][24][25] Felding et al in his study aimed at comparison of orbital volumes between the right and left sides found a difference of about 0.19 mm (24.42 mm on the right and 24.13 on the left).…”

Section: Discussionmentioning

confidence: 99%

Comparison of orbital volume measured using computed tomography and fluid displacement: A comparative study using dry skull

Suresh

Chandrasekaran

Jayakumar

2022

SRJHS

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Objectives: The purpose of the study was as follows: (1) To compare orbital volume calculated using computed tomography (CT) scans with real-time measurements. (2) To evaluate if the orbital volume of the adjacent orbit can be taken as a tool of comparison for orbital volume correction in orbital fractures. Materials and Methods: A prospective study was conducted on 30 orbital cavities with intact orbital walls. The foramina and fissures were sealed using molding wax. Alginate impressions of the orbital cavity were taken to determine the orbital volume using the Archimedes principle. GE light speed 64 slices CT scanner was used to scan the orbits with 0.8 mm sections. Orbital volume was calculated using the CT software GE ADW 4.5 workstation. Results: The comparison of CT measurement and Archimedes principle measurement shows a mean and standard error of 0.2333 mm and 0.09794, respectively, on the right orbits and a mean and standard error of 0.10011 mm and 0.0981, respectively, on the left orbits. The comparison of the right and left orbits shows a mean and standard error of 0.4067 mm and 0.2771 mm, respectively, using the Archimedes principle and a mean and standard error of 0.3300 mm and 0.2775, respectively, using CT scans. Conclusion: It was found that the difference in orbital volume between CT and real-time measurement is very negligible. The study shows that CT is a reliable tool for the orbital volume measurement and the adjacent orbit can be taken as a comparative tool for the orbital volume corrections.

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“…However, those operative indications caused some confusion for clinical use and did not yield any objective preoperative numerical guidelines that could estimate eventual enopthalmos degree for determining the need for surgery. When the patients did not have any limitation of ocular movement, the ophthalmic surgeon needed to determine whether to perform the operation by evaluating the preoperative CT image and the enophthalmos measurements [10]. But, enophthalmos might not appear in the preoperative period due to periorbital swelling, and the preoperative enophthalmos measurements would not be useful as a reliable surgical guideline [11].…”

Section: Discussionmentioning

confidence: 99%

The Correlation between the Orbital Volume Ratio and Enophthalmos in Unoperated Blowout Fractures

Choi

Kang

2016

Arch Plast Surg

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BackgroundEnophthalmos may not appear immediately after trauma due to periorbital swelling in a blowout fracture, and preoperative measurements of enophthalmos cannot be used as a reliable guideline. It is important to predict the eventual final extent of enophthalmos in order to determine whether to perform surgery, and there have been several attempts to predict the degree of late enophthalmos using preoperative orbital volume. The purpose of this study is to investigate the correlation between the orbital volume ratio (OVR) with final enophthalmos and the palpebral fissure, and to find the OVR that induced 2 mm of enophthalmos in unilateral unoperated blowout fractures.MethodsWe retrospectively reviewed the medical records of 38 patients and divided them into 3 groups, determined by the fracture location. The relationships between the OVR and both the degree of enophthalmos and the palpebral fissure ratio (PFR) were assessed and, in particular, the OVR that induced 2 mm of enophthalmos was sought.ResultsEnophthalmos increased in proportion to the OVR, and there was a highly significant correlation between the increase in the OVR and the degree of enophthalmos (P<0.05). On the other hand, there was no correlation between OVR and PFR (P>0.05). The OVR that induced 2-mm enophthalmos was 112.18%.ConclusionsThe final degree of enophthalmos can be estimated by the preoperative measurement of OVR. Preoperative measurements of OVR can be used as quantitative values to predict the final degree of enophthalmos in pure blowout fractures.

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

Cited by 14 publications

References 15 publications

Effects of Modified Osteoplastic Pterional Craniotomy on Temporal Muscle Volume and Frontal Muscle Nerve Function

Effects of Modified Osteoplastic Pterional Craniotomy on Temporal Muscle Volume and Frontal Muscle Nerve Function

Comparison of orbital volume measured using computed tomography and fluid displacement: A comparative study using dry skull

The Correlation between the Orbital Volume Ratio and Enophthalmos in Unoperated Blowout Fractures

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