Automatic 3D segmentation of facial soft tissues using unlabelled prior information

Author(s):  
Yousef Rezaeitabar ◽  
Ilkay Ulusoy
2019 ◽  
Vol 4 (3) ◽  
pp. 10-16
Author(s):  
Luciana Campos GUIMARÃES ◽  
Lílian Vieira LIMA ◽  
Júlia Garcia COSTA ◽  
Adriana De Alcantara Cury SARAMAGO ◽  
Cláudia Trindade MATTOS ◽  
...  

2020 ◽  
Vol 36 (03) ◽  
pp. 309-316
Author(s):  
Ozcan Cakmak ◽  
Ismet Emrah Emre

AbstractPreservation of the facial nerve is crucial in any type of facial procedure. This is even more important when performing plastic surgery on the face. An intricate knowledge of the course of the facial nerve is a requisite prior to performing facelifts, regardless of the technique used. The complex relationship of the ligaments and the facial nerve may put the nerve at an increased risk of damage, especially if its anatomy is not fully understood. There are several danger zones during dissection where the nerve is more likely to be injured. These include the areas where the nerve branches become more superficial in the dissection plane, and where they traverse between the retaining ligaments of the face. Addressing these ligaments is crucial, as they prevent the transmission of traction during facelifts. Without sufficient release, a satisfying pull on the soft tissues may be limited. Traditional superficial musculoaponeurotic system techniques such as plication or imbrication do not include surgical release of these attachments. Extended facelift techniques include additional dissection to release the retaining ligaments to obtain a more balanced and healthier look. However, these techniques are often the subject of much debate due to the extended dissection that carries a higher risk of nerve complications. In this article we aim to present the relationship of both the nerve and ligaments with an emphasis on the exact location of these structures, both in regard to one another and to their locations within the facial soft tissues, to perform extended techniques safely.


Author(s):  
P. Meyer-Marcotty ◽  
J. Kochel ◽  
U. Richter ◽  
F. Richter ◽  
A. Stellzig-Eisenhauer

2003 ◽  
Vol 40 (5) ◽  
pp. 544-549 ◽  
Author(s):  
Virgilio F. Ferrario ◽  
Chiarella Sforza ◽  
Claudia Dellavia ◽  
Gianluca M. Tartaglia ◽  
Davide Sozzi ◽  
...  

Objective To supply quantitative information about the facial soft tissues of adult operated patients with cleft lip and palate (CLP). Design, Setting, and Patients The three-dimensional coordinates of soft tissue facial landmarks were obtained using an electromagnetic digitizer in 18 Caucasian patients with CLP (11 males and 7 females aged 19 to 27 years) and 162 healthy controls (73 females and 89 males aged 18 to 30 years). From the landmarks, 15 facial dimensions and two angles were calculated. Data were compared with those collected in healthy individuals by computing z-scores. Two summary anthropometric measurements for quantifying craniofacial variations were assessed in both the patients and reference subjects: the mean z-score (an index of overall facial size), and its SD, called the craniofacial variability index (an index of facial harmony). Results In treated patients with CLP, facial size was somewhat smaller than in normal individuals, but in all occasions the mean z-score fell inside the normal interval (mean ± 2 SD). Almost all patients had a craniofacial variability index larger than the normal interval, indicating a global disharmonious appearance. Overall, in patients pronasale, subnasale, and pogonion were more posterior, the nose was shorter and larger, the face was narrower, and the soft tissue profile and upper lip were flatter than in the reference population. Conclusions The facial soft tissue structures of adult operated patients with CLP differed from those of normal controls of the same age, sex, and ethnic group. In this patient group, surgical corrections of CLP failed to provide a completely harmonious appearance, even if the deviations from the reference were limited. Further analyses of larger groups of patients are needed.


2007 ◽  
Vol 6 (4) ◽  
pp. 91-94
Author(s):  
A. B. Shadymov ◽  
A. S. Novosyolov

Basal skull fractures are frequent and cause certain difficulties in detection of the mechanism of their formation. Common dissecting methods do not allow detailed study of the external base of skull and deform facial soft tissues. A new method is developed, which allows determining the mechanism of formation of constructional fractures of the basal skull and pterygoid processes at various injuries, in particular, inside a passenger compartment at headon collision of motor vehicles. The method is registered as an invention.


2007 ◽  
Vol 17 (4) ◽  
pp. 238-246 ◽  
Author(s):  
FUMI TAKEMURA ◽  
SHUICHI MORITA ◽  
MASAKI YAMAKI ◽  
CHIKARA SAITO ◽  
RITSUO TAKAGI ◽  
...  

Author(s):  
Konstantinos Kourelis ◽  
Konstantinos Mourtzouchos ◽  
Vasileios Haronis ◽  
Anastasios Goulioumis ◽  
Athanasios Asimakopoulos

2021 ◽  
Author(s):  
Peter Somers ◽  
Johannes Schule ◽  
Cristina Tarin ◽  
Oliver Sawodny

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