Orbital Volume Measurements in Enophthalmos Using Three-Dimensional CT Imaging

Bite, Uldis; Jackson, Ian T.; Forbes, Glenn S.; Gehring, Dale G.

doi:10.1097/00006534-198504000-00010

Cited by 23 publications

(32 citation statements)

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“…Recently, many studies have analyzed the relationships between orbital or eyeball volumes and age, gender, or race using computed tomography (CT) or magnetic resonance imaging (MRI) [1][2][3][4][5][6][7][8][9][10][11] . Comparing MRI and CT data, Chau et al [11] reported that orbital and eyeball volume measurements using MRI correlated with those acquired using CT and that MRI provided a more accurate result than CT.…”

Section: Introductionmentioning

confidence: 99%

A Study on Orbital Volume of Korean People in Their 20s or 40s

Kim¹,

Lee²,

Lee³

et al. 2011

Ophthalmic Res

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Aims: To measure the orbital volume of normal Korean people in two different age groups (subjects were in their 20s or 40s), and analyze the differences of orbital volume with respect to age and gender. In addition, to analyze correlation between body parameters (height and weight) and the orbital volume. Methods: Magnetic resonance imaging (MRI) data were acquired for a total of 143 subjects, consisting of 71 subjects in their 20s (32 males and 39 females) and 72 subjects in their 40s (30 males and 42 females). Two-way ANOVA was used to analyze how orbital volume changes with respect to gender and age. A multiple regression analysis was performed to investigate the correlation between body parameters and the orbital volume. Results: The orbital volume of subjects in their 20s was larger than that of subjects in their 40s, and the volume was larger in men than in women. As age increased, the decrease in the orbital volume of women was greater than that of men. While weight and height showed positive correlations with orbital volume in male and female subjects in their 20s, respectively, weight showed a positive correlation with orbital volume in male and female subjects in their 40s. Conclusions: These results provide basic information about the effect of age, gender, and body parameters on orbital volume of Korean people in their 20s or 40s.

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Section: Introductionmentioning

confidence: 99%

A Study on Orbital Volume of Korean People in Their 20s or 40s

Kim¹,

Lee²,

Lee³

et al. 2011

Ophthalmic Res

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“…Macrophthalmus is said to be present when all dimensions of the eye are increased but glaucoma is not present (21 In previous studies measuring MRI and CT scanning, VE and VO were estimated using planimetry, but the coeffi cient of error was not calculated. Furthermore, none of these studies used stereological methods to estimate the volume (10)(11)(12)(13)(22)(23)(24).…”

Section: Discussionmentioning

confidence: 99%

Estimation Of The Eyeball And Orbital Volume Using The Cavalieri Principle On Computed Tomography Images

Acer¹,

Demir²,

Ucar³

et al. 2010

TUTFD

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“…CT-based volumetric studies have been used extensively in the investigation of post-traumatic enophthalmos (19)(20)(21)(22)(23). These studies have identified a consistent and predictable relationship between ocular projection and orbital volume.…”

Section: Discussionmentioning

confidence: 99%

Graves exophthalmos: Volumetric assessment of orbital expansion

Grover¹,

Mainprize²

2003

J Plast Surg

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RS Grover, J Mainprize, E Ing, OM Antonyshyn. Graves' exophthalmos: Volumetric assessment of orbital expansion. Can J Plast Surg 2003;11(4):191-197. INTRODUCTION: Graves' ophthalmopathy is characterized by an increase in the volume of orbital soft tissue contents and an associated increase in intraorbital pressure. Surgical expansion of bony orbital volume is therefore an effective method of treating moderate to severe exophthalmos. Numerous correlations between specific decompression procedures and reduction of proptosis have been made. The main emphasis of the majority of these studies, however, appears to be of a qualitative nature rather than quantitative. OBJECTIVES: To quantitatively examine the consequences of surgical orbital decompression in the treatment of severe Graves' exophthalmos, with respect to changes in ocular globe projection and orbital soft tissue and bony volume. MATERIAL AND METHODS: A series of three patients (five orbits) with severe exophthalmos were evaluated. All patients were operated on by a single surgeon using a standard technique of orbitozygmatic osteotomy in conjunction with three-wall orbital decompression and release of periorbita. Data obtained from standardized preoperative and three-month postoperative computed tomography scans were transferred to an offline computer workstation. Scalar and volumetric parameters were quantitatively analyzed to determine changes in globe projection in relation to intraorbital volume differences. RESULTS: Following surgery, mean globe retrodisplacement from the lateral orbital rim and from the optic foramen were 6.7 mm and 3.3 mm, respectively. Osteotomy and decompression were effective in producing an 18.6% increase in bony orbital volume. However, the volume of intraorbital soft tissues increased substantially following surgery, with a 23.4% increase in orbital fat volume and a 12.2% increase in neurovascular tissue volume. CONCLUSIONS: The degree of globe retrodisplacement achieved by surgical expansion of the bony orbital cavity in patients with Graves' ophthalmopathy may be less than anticipated, due to a postoperative increase in the intraorbital soft tissue volumes.

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Orbital Volume Measurements in Enophthalmos Using Three-Dimensional CT Imaging

Cited by 23 publications

References 0 publications

A Study on Orbital Volume of Korean People in Their 20s or 40s

A Study on Orbital Volume of Korean People in Their 20s or 40s

Estimation Of The Eyeball And Orbital Volume Using The Cavalieri Principle On Computed Tomography Images

Graves exophthalmos: Volumetric assessment of orbital expansion

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