Evaluating accuracy and reliability of active stereophotogrammetry using MAVIS III Wound Camera for three-dimensional assessment of hypertrophic scars

Su, Samuel; Sinha, Sarthak; Gabriel, Vincent

doi:10.1016/j.burns.2017.02.018

Cited by 9 publications

(11 citation statements)

References 22 publications

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“…Several studies have proven the reliability and accuracy of these modalities for soft tissue evaluation. 5,[7][8][9][10][11] Unlike LS, SPG has a fast acquisition time, thereby eliminating inaccuracies related to motion artefacts. The availability of 3D imaging systems offers a possibility to perform automated 3D facial analyses, and these systems have been widely applied in the fields of prosthodontics, dental implantology, orthodontics and maxillofacial surgery.…”

Section: Accuracy and Reliability Of 2-dimensional Photography Versusmentioning

confidence: 99%

“…Soft tissue evaluation is an important component of dentomaxillofacial diagnoses, treatment planning, treatment outcome monitoring, and postoperative follow-up. [1][2][3][4][5] The methods that have been used to assess soft tissue morphology can be classified as direct or indirect anthropometry. 3 The reliability of direct anthropometry and its application as a gold standard have already been validated, but it has certain limitations; for example, it is time-consuming and invasive, and requires patient cooperation.…”

Section: Introductionmentioning

confidence: 99%

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Accuracy and reliability of 2-dimensional photography versus 3-dimensional soft tissue imaging

et al. 2020

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Purpose: This study was conducted to objectively and subjectively compare the accuracy and reliability of 2-dimensional (2D) photography and 3-dimensional (3D) soft tissue imaging. Materials and Methods: Facial images of 50 volunteers (25 males, 25 females) were captured with a Nikon D800 2D camera (Nikon Corporation, Tokyo, Japan), 3D stereophotogrammetry (SPG), and laser scanning (LS). All subjects were imaged in a relaxed, closed-mouth position with a normal smile. The 2D images were then exported to Mirror ® Software (Canfield Scientific, Inc, NJ, USA) and the 3D images into Proplan CMF ® software (version 2.1, Materialise HQ, Leuven, Belgium) for further evaluation. For an objective evaluation, 2 observers identified soft tissue landmarks and performed linear measurements on subjects' faces (direct measurements) and both linear and angular measurements on all images (indirect measurements). For a qualitative analysis, 10 dental observers and an expert in facial imaging (subjective gold standard) completed a questionnaire regarding facial characteristics. The reliability of the quantitative data was evaluated using intraclass correlation coefficients, whereas the Fleiss kappa was calculated for qualitative data. Results: Linear and angular measurements carried out on 2D and 3D images showed excellent inter-observer and intra-observer reliability. The 2D photographs displayed the highest combined total error for linear measurements. SPG performed better than LS, with borderline significance (P = 0.052). The qualitative assessment showed no significant differences among the 2D and 3D imaging modalities. Conclusion: SPG was found to a reliable and accurate tool for the morphological evaluation of soft tissue in comparison to 2D imaging and laser scanning.

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Section: Accuracy and Reliability Of 2-dimensional Photography Versusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Accuracy and reliability of 2-dimensional photography versus 3-dimensional soft tissue imaging

et al. 2020

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“…A device with a similar working mechanism, MAVIS III (Photometrix, Pontypridd, United Kingdom), was assessed in a study on burn scars. The authors note that poorly delineated scars on curved surfaces pose a challenge in the boundary selection and subsequent analysis [10].…”

Section: Volumetric Analysesmentioning

confidence: 99%

Structural Assessment of Scars Using Optical Techniques

Haasterecht

Zuijlen

Groot

2020

Textbook on Scar Management

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The evaluation of scar treatment benefits from exact structural measurements. Accurate assessment of thickness, surface area, and relief is crucial in routine clinical follow-up. From an experimental perspective, precise visualization of the microstructural organization is necessary for a better understanding of the mechanisms underlying pathological scarring. Structural proteins in scars differ from healthy skin in terms of amount, type, and importantly, organization. The precise quantification of this extracellular matrix (ECM) organization was, until recently, limited to two-dimensional images from fixated and stained tissue. Advances in optical techniques now allow high-resolution imaging of these structures, in some cases in vivo. The enormous potential of these techniques as objective assessment tools is illustrated by a substantial increase in available devices. This chapter describes currently used devices and techniques used in the clinical follow-up of scar progression from a volumetric standpoint. Furthermore, some of the most powerful techniques for microstructural research are described including optical coherence tomography, nonlinear optical techniques such as second harmonic generation microscopy, and confocal microscopy.

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“…Stereophotogrammetry, a non-invasive three-dimensional (3D) imaging and measurement technique, may be an appropriate tool for the quantification of burn scar characteristics. Stereophotogrammic technology has evolved from cumbersome imaging set ups to handheld, portable digital cameras, making it an attractive candidate for inclusion in clinical and research-based assessment of burn scars [21][22][23][24]. A stereophotogrammic approach involves taking two photographs of an object from differing angles wherein the images partially overlap (Figure 1) [25].…”

Section: Introductionmentioning

confidence: 99%

“…2024, 5,3 image, software analysis enables objective measurements. Stereophotogrammetry has been incorporated into the assessment of scars and wounds [21][22][23][24][26][27][28]. Where previous work has simply validated stereophotogrammetry as an accurate, reliable non-contact method to determine burn scar volume using patient and simulated scars, the applications of stereophotogrammetry in wound progression and non-burn scars have been more extensively explored [21,22,24,[26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Clinical Estimation and Stereophotogrammic Instrumented Imaging of Burn Scar Height and Volume

Bharadia,

Gabriel

2024

EBJ

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Descriptive clinical tools for characterizing burn scars are limited by between-user variability and unknown sensitivity to change over time. We previously described preclinical assessment of stereophotogrammetry as a valid measure of burn-related scars. Here, we compared the estimated vs. instrumented measurements of maximum height and total positive volume of 26 burn scars. The burn scars were imaged with the QuantifiCare LifeViz Micro 3D camera. Three experienced wound care therapists first estimated, then measured using 3D Track software, the imaged scars’ height and volume. Two-factor analysis without replication was performed to calculate intraclass correlation coefficients (ICCs) between assessors’ estimated scar height and volume, and measured height and volume. Two-sided Wilcoxon tests were performed comparing the mean estimated height and volume with the estimated and measured outputs. The estimated scar height’s ICC was 0.595, and for volume, it was 0.531. The measured scar height’s ICC was 0.933 and for volume, it was 0.890. The estimated and measured volume were significantly different (z = −2.87, p = 0.041), while the estimated and measured height were not (z = −1.39, p = 0.161). Stereophotogrammic measurement of scar height and volume is more reliable than clinical photograph assessment. Stereophotogrammetry should be utilized when assessing burn scar height and volume, rather than subjective estimates from clinical scar tools.

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Evaluating accuracy and reliability of active stereophotogrammetry using MAVIS III Wound Camera for three-dimensional assessment of hypertrophic scars

Cited by 9 publications

References 22 publications

Accuracy and reliability of 2-dimensional photography versus 3-dimensional soft tissue imaging

Accuracy and reliability of 2-dimensional photography versus 3-dimensional soft tissue imaging

Structural Assessment of Scars Using Optical Techniques

Comparison of Clinical Estimation and Stereophotogrammic Instrumented Imaging of Burn Scar Height and Volume

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