Three-dimensional characterisation of the globe position in the orbit

Willaert, Robin; Shaheen, Eman; Deferm, J.T.; Vermeersch, Hubert; Jacobs, Reinhilde; Mombaerts, Ilse

doi:10.1007/s00417-020-04631-w

Cited by 8 publications

(7 citation statements)

References 23 publications

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“…Soft tissues occupying the orbital cavity, such as fat and muscles, also play an important role in determining the orbit and, more specifically, the globe position. Both hard and soft tissues should be considered when planning orbital reconstruction [ 24 , 27 ]. Unfortunately, no consensus exists yet on how to integrate soft tissue measurements during virtual treatment planning.…”

Section: Discussionmentioning

confidence: 99%

Augmented and Virtual Reality for Preoperative Trauma Planning, Focusing on Orbital Reconstructions: A Systematic Review

Dubron

Verbist

Jacobs

et al. 2023

JCM

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Background: This systematic review summarizes recent literature on the use of extended reality, including augmented reality (AR), mixed reality (MR), and virtual reality (VR), in preoperative planning for orbital fractures. Methods: A systematic search was conducted in PubMed, Embase, Web of Science and Cochrane on 6 April 2023. The included studies compared extended reality with conventional planning techniques, focusing on computer-aided surgical simulation based on Computed Tomography data, patient-specific implants (PSIs), fracture reconstruction of the orbital complex, and the use of extended reality. Outcomes analyzed were technical accuracy, planning time, operative time, complications, total cost, and educational benefits. Results: A total of 6381 articles were identified. Four articles discussed the educational use of VR, while one clinical prospective study examined AR for assisting orbital fracture management. Conclusion: AR was demonstrated to ameliorate the accuracy and precision of the incision and enable the better identification of deep anatomical tissues in real time. Consequently, intraoperative imaging enhancement helps to guide the orientation of the orbital reconstruction plate and better visualize the precise positioning and fixation of the PSI of the fractured orbital walls. However, the technical accuracy of 2–3 mm should be considered. VR-based educational tools provided better visualization and understanding of craniofacial trauma compared to conventional 2- or 3-dimensional images.

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Section: Discussionmentioning

confidence: 99%

Augmented and Virtual Reality for Preoperative Trauma Planning, Focusing on Orbital Reconstructions: A Systematic Review

Dubron

Verbist

Jacobs

et al. 2023

JCM

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“…To our knowledge, this is the first use of computer software to quantify proptosis in a volumetric fashion to help improve the prediction of the likelihood of surgery. Willaert et al [ 38 ] described using CT imaging technology to measure proptosis in control and thyroid eye disease patients before and after surgical decompression, but the clinicians were still required to choose maximum diameters of the globes for the creation of a sphere. Chaganti and colleagues [ 39 ] used computer software to measure orbital landmarks in patients with thyroid eye disease, including globe position; however, it was unclear if relative proptosis was defined in terms of length or volume and no surgical threshold was defined.…”

Section: Discussionmentioning

confidence: 99%

Artificial Intelligence Automation of Proptosis Measurement: An Indicator for Pediatric Orbital Abscess Surgery

Bandos

Leader

et al. 2023

Ophthalmol Ther

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Introduction To evaluate the ability of artificial intelligence (AI) software to quantify proptosis for identifying patients who need surgical drainage. Methods We pursued a retrospective study including 56 subjects with a clinical diagnosis of subperiosteal orbital abscess (SPOA) secondary to sinusitis at a tertiary pediatric hospital from 2002 to 2016. AI computer software was developed to perform 3D visualization and quantitative assessment of proptosis from computed tomography (CT) images acquired at the time of hospital admission. The AI software automatically computed linear and volume metrics of proptosis to provide more practice-consistent and informative measures. Two experienced physicians independently measured proptosis using the interzygomatic line method on axial CT images. The AI software and physician proptosis assessments were evaluated for association with eventual treatment procedures as standalone markers and in combination with the standard predictors. Results To treat the SPOA, 31 of 56 (55%) children underwent surgical intervention, including 18 early surgeries (performed within 24 h of admission), and 25 (45%) were managed medically. The physician measurements of proptosis were strongly correlated (Spearman r = 0.89, 95% CI 0.82–0.93) with 95% limits of agreement of ± 1.8 mm. The AI linear measurement was on average 1.2 mm larger ( p = 0.007) and only moderately correlated with the average physicians’ measurements ( r = 0.53, 95% CI 0.31–0.69). Increased proptosis of both AI volumetric and linear measurements were moderately predictive of surgery (AUCs of 0.79, 95% CI 0.68–0.91, and 0.78, 95% CI 0.65–0.90, respectively) with the average physician measurement being poorly to fairly predictive (AUC of 0.70, 95% CI 0.56–0.84). The AI proptosis measures were also significantly greater in the early as compared to the late surgery groups ( p = 0.02, and p = 0.04, respectively). The surgical and medical groups showed a substantial difference in the abscess volume ( p < 0.001). Conclusion AI proptosis measures significantly differed from physician assessments and showed a good overall ability to predict the eventual treatment. The volumetric AI proptosis measurement significantly improved the ability to predict the likelihood of surgery compared to abscess volume alone. Further studies are needed to better characterize and incorporate the AI proptosis measurements for assisting in clinical decision-making.

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“…After systematic training, we can evaluate the accuracy and duration of the operation. Moreover, CT is used to measure other orbital parameters, such as global position, globe area, and orbital area (33)(34)(35). The digital images have also been utilized to assess the eyelid position, mediopupilar aperture, lateral height, and distance from the iris edge to the lateral boundary of the palpebral fissure (36,37).…”

Section: Discussionmentioning

confidence: 99%

A novel method of measuring proptosis with computed tomography

Sun

Yin

et al. 2023

Acta Radiol

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Background Computed tomography (CT) can avoid interference factors and has been imported into some software to measure proptosis clinically as the golden standard. Purpose To establish a new method for semi-automatically measuring the proptosis on CT and evaluate its accuracy and reproducibility. Material and Methods A total of 50 orbital CT images were collected of healthy individuals, 25 patients with Graves ophthalmopathy (GO), and 25 patients with orbital fracture (OF). A new image processing software, MedrawHDC, was developed to semi-automatically measure the proptosis (MedrawHDC method). The classic radiological (CR) method (measuring proptosis with the software called Mimics) and MedrawHDC method were applied in all three groups (measured by observer S). Hertel's exophthalmometer (HE) method was also applied in the GO group. Moreover, two other observers were asked to measure the proptosis using MedrawHDC, to evaluate its reproducibility. Results The MedrawHDC method was highly consistent with the CR method in measuring proptosis (normal group: intraclass correlation coefficient [ICC] = 0.989; GO group: ICC = 0.979; OF group: ICC = 0.979). In the GO group, the value of proptosis measured by two radiological methods were consistent with that measured by the HE method (CR method: ICC = 0.703; MedrawHDC method: ICC = 0.697). Bland–Altman plots showed similar results. The measurements obtained by three observers were highly reproducible (ICC = 0.995). Conclusion The newly established MedrawHDC method, with high accessibility, convenience, and repeatability, is reliable in assessing proptosis. It shows high potential for wide application, having clinical value for scientific evaluation of proptosis.

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Three-dimensional characterisation of the globe position in the orbit

Cited by 8 publications

References 23 publications

Augmented and Virtual Reality for Preoperative Trauma Planning, Focusing on Orbital Reconstructions: A Systematic Review

Augmented and Virtual Reality for Preoperative Trauma Planning, Focusing on Orbital Reconstructions: A Systematic Review

Artificial Intelligence Automation of Proptosis Measurement: An Indicator for Pediatric Orbital Abscess Surgery

A novel method of measuring proptosis with computed tomography

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