Contour Analysis in Plastic and Reconstructive Surgery

Karlan, Marc S.

doi:10.1001/archotol.1979.00790230040009

Cited by 20 publications

(7 citation statements)

References 11 publications

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“…Soon landmark‐based methods were combined with the human‐observer‐derived muscle action unit system to computer model key points of facial features crucial to the expression of internal mood states 20‐23 . Moire topography, a technique in which illumination through a grid creates contour lines upon an object, has been used to assess facial asymmetry and surface deformations during facial expression 24,25 . This method has not become popular.…”

Section: Discussionmentioning

confidence: 99%

Validation of Objective Measures for Facial Paralysis

Helling

Neely

1997

The Laryngoscope

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A shift from subjective scales to objective measures of facial paralysis requires physical models against which to validate and calibrate the new objective techniques. The purpose of this report was to demonstrate such a model and to test the capacity of an objective computer system to accurately measure physical change. The physical model consisted of an advancing edge of a spreading gelatin film. The model was measured in submillimeter increments. Concurrent measurements were made using the computed system. Ten trials were conducted. The objective system proved to be exquisitely sensitive (0.03 mm) and highly correlated with the physical criterion model (Pearson's product moment correlation coefficient [r]=0.9849). Sensitive and calibrated objective methods of analysis of facial motion are crucial to the design of clinical trials, clinical studies of nerve regeneration, and comparisons of reanimation techniques.

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Section: Discussionmentioning

confidence: 99%

Validation of Objective Measures for Facial Paralysis

Helling

Neely

1997

The Laryngoscope

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“…This method has been applied to the measure of rough-surfaced materials since 1970.1 In the fields of medicine, moir6 topography has been applied to scoliosis screening in orthopedics I4 and the postoperative assessment of the face in plastic surgery. 15 We already have reported that several characteristic patterns of moir6 stripes were associated with severity Initially we proposed the use of the asymmetry index as an index of facial deviation. 16,18 Although the asymmetry index is an objective and precise assessment, it consumes too much time in clinical use.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Facial Palsy by Moiré Topography Index

Yuen

Inokuchi

Maeta

et al. 1997

Otolaryngol.--head neck surg.

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We investigated the usefulness of moiré topography for evaluating facial nerve function in 51 patients with facial palsy and 10 normal volunteers. This method visualizes the shape of objects in three dimensions. We devised three moiré indexes as a simple method of quantifying the severity of facial palsy: the nasolabial groove moiré index, the oral angle moiré index, and the inner canthus moiré index. We compared the results obtained by the moiré indexes with findings obtained using the House-Brackmann grading system and found that they were highly correlated. These three moiré indexes included all the standard factors of the House-Brackmann grading system, allowing us to develop the total moiré index.

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“…(1984) subjectively assessed nasal deviation as being greater or less than half of one nasal bridge width. Others have employed more sophisticated photographic techniques to assess facial contours (Karlan, 1979). The method described was developed as a means of assessing nasal fractures and of the results of surgery to correct the deformity.…”

Section: Discussionmentioning

confidence: 99%