Three-Dimensional Arterial Distribution Over the Midline of the Nasal Bone

2021 ◽  
Author(s):  
Li-Yao Cong ◽  
Zhi-Feng Liao ◽  
Yun-Song Zhang ◽  
Dong-Ni Li ◽  
Sheng-Kang Luo
Keyword(s):  
Three Dimensional ◽  
Nasal Bone ◽  
Entry Point ◽  
Comprehensive Understanding ◽  
Filler Injection ◽  
Arterial Variations ◽  
Superficial Musculoaponeurotic System ◽  
Arterial Trunk

Abstract Background A comprehensive understanding of arterial variations around the midline of the nose is of great importance for the safety of filler injection. Objectives The aim of the study was to clearly define the 3D location of the arteries along the midline of the nasal bone. Methods The arterial structures overlapping the nasal bone along the midline were observed in seventy-nine cadavers. Results The present study found that 0~3 named arteries per nose segment could be identified. All of the arterial structures were located in or above the superficial musculoaponeurotic system (SMAS) layer overlapping the nasal bone. The probability of encountering named arteries at five defined points, P1-P5, was 5/79 (6.3%), 4/79 (5.1%), 1/79 (1.3%), 6/79 (7.6%) and 9/79 (11.4%), respectively. The depth of the main arterial trunk was 1.2 ± 0.4 mm, 1.6 ± 0.6 mm, 1.8 ± 0 mm, 1.0 ± 0.4 mm, 0.9 ± 0.5 mm below the skin at P1-P5, respectively. Conclusions We confirmed that sub-SMAS injection along the midline through a needle is anatomically reliable and that a technique with one entry point through the rhinion via a cannula can easily keep the needle sufficiently deep for safe nasal filler injection.

scholarly journals Computed Tomography evaluation of maxillofacial injuries

2017 ◽  
Vol 12 (4) ◽  
pp. 131-136
Author(s):  
V Natraj Prasad ◽  
Ashish Khanal
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Imaging Features ◽  
Maxillofacial Injuries ◽  
Female Population ◽  
Complex Anatomy ◽  
Plain Films ◽  
Maxillofacial Fractures

Background & Objectives: The maxillofacial region, a complex anatomical structure, can be evaluated by conventional (plain) films, Tomography, Multidetector Computed Tomography, Three-Dimensional Computed Tomography, Orthopantomogram and Magnetic Resonance Imaging. The study was conducted with objective of describing various forms of maxillofacial injuries, imaging features of different types of maxillofacial fractures and the advantage of using Three- Dimensional Computed Tomography reconstructed image. Materials & Methods: A hospital based cross-sectional study was conducted among 50 patients during April 2014 to September 2016 using Toshiba Aquilion Prime 160 slice Multi Detector Computed Tomography scanner.Results: The maxillofacial fractures were significantly higher in male population (88%) than female population (12 %). Road traffic accidents were the most common cause of injury others being physical assault and fall from height. It was most common in 31-40 years (26%) and 21-30 (24%) years age group. Maxillary sinus was the commonest fracture (36%) followed by nasal bone and zygomatic bone (30%), mandible and orbital bones (28%). Soft tissue swelling was the commonest associated finding. Three dimensional images (3 D) compared to the axial scans missed some fractures. However, the extension of the complex fracture lines and degree of displacement were more accurately assessed. Complex fractures found were Le fort (6%) and naso-orbito-ethmoid (4%) fractures.Conclusion: The proper evaluation of complex anatomy of the facial bones requires Multidetector Computed Tomography which offers excellent spatial resolution enabling multiplanar reformations and three dimensional reconstructions for enhanced diagnostic accuracy and surgical planning.

Analysis of the nasal bone and nasal pyramid by three-dimensional computed tomography

2007 ◽  
Vol 265 (4) ◽  
pp. 421-424 ◽  
Author(s):  
Seung Ho Lee ◽  
Tae Yong Yang ◽  
Gil Soo Han ◽  
Young Hyo Kim ◽  
Tae Young Jang
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Nasal Pyramid

A Comprehensive Understanding on Sewability of Natural Biomaterial: An Insight on Process Optimization during Leather Manufacture

2021 ◽  
Vol 116 (7) ◽  
Author(s):  
Gladstone Christopher Jayakumar ◽  
K Phebe Aaron ◽  
K Krishnaraj
Keyword(s):  
Physical Properties ◽  
Process Optimization ◽  
Three Dimensional ◽  
Experimental Results ◽  
Comprehensive Understanding ◽  
Microscopic Images ◽  
Dimensional Matrix ◽  
Natural Biomaterial ◽  
Leather Manufacture

Leather is three-dimensional matrix possessing unique properties which makes it more comfortable for daily use. Garments made from leathers are preferred choice owing to their multifaceted properties as compared to textiles in the colder regions. In the present study, an attempt has been made to evaluate the influence of phenolic syntan and synthetic fatliquor on the sewability and physical properties of post tanned leathers. From the experimental results, it is observed that the concentration of phenolic syntan and fatliquor influences leather sewability. Optical microscopic images of leathers also show that they are more compact and tighter with higher percentage of syntan. The study provides an insight in understanding the optimum usage of post tanning chemicals for better sewing properties without affecting the leather matrix adversely.

Deep Plane Facelift: An Evaluation of the High-SMAS versus Standard Incision Points

2018 ◽  
Vol 34 (06) ◽  
pp. 646-650
Author(s):  
Chiara Amodeo ◽  
Vishad Nabili ◽  
Gregory Keller ◽  
Jordan Sand
Keyword(s):  
Skin Flap ◽  
Vertical Direction ◽  
Senior Author ◽  
Entry Point ◽  
Face Lift ◽  
Vertical Movements ◽  
Plane Face ◽  
Superficial Musculoaponeurotic System ◽  
Entry Points ◽  
Tissue Movement

AbstractIn surgery of the aging face, operative adjustments of the superficial musculoaponeurotic system (SMAS) enhance facial contours. The senior author has observed that the standard deep plane face lift entry points on the SMAS do not provide as much tissue movement in a vertical direction as high-SMAS deep plane face lift entry points. In this study, tissue movement was measured comparing the conventional SMAS entry point with a high-SMAS entry point for deep plane face lifts. Institutional review board approval was obtained. Fourteen facelift patients were enrolled, 10 female and 4 male. Average age was 63.4 (50–81) years. Tissue movement at three points along the jaw line was measured intraoperatively. Standard SMAS entry point suspension resulted in average vertical movements of 6.4, 10.3, and 13.8 mm and average horizontal movements of 3.5, 5.7, and 6.5 mm. High-SMAS entry point resulted in average vertical movements of 11.8, 17.9, and 24.1 mm and average horizontal movements of 5.8, 9.8, and 9.9 mm. This resulted in a 77.3% increase (p = 0.03) in vertical movement and a 61.4% increase (p = 0.02) in horizontal movement with a high-SMAS entry compared with standard SMAS entry. The high-SMAS entry point for a deep plane facelift resulted in a significant increase in lift for both the horizontal and vertical vector on the facial skin flap when compared with the conventional entry.

scholarly journals Diagnostic tools in maxillofacial fractures: Is there really a need of three-dimensional computed tomography?

2016 ◽  
Vol 49 (02) ◽  
pp. 225-233 ◽  
Author(s):  
Sheerin Shah ◽  
Sanjeev K. Uppal ◽  
Rajinder K. Mittal ◽  
Ramneesh Garg ◽  
Kavita Saggar
Keyword(s):  
Computed Tomography ◽  
Clinical Examination ◽  
Computed Radiography ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Conventional Radiography ◽  
Diagnostic Tools ◽  
Ct Reconstruction ◽  
Management Protocol ◽  
Maxillofacial Fractures

ABSTRACTIntroduction: Because of its functional and cosmetic importance, facial injuries, especially bony fractures are clinically very significant. Missed and maltreated fractures might result in malocclusion and disfigurement of the face, thus making accurate diagnosis of the fracture very essential. In earlier times, conventional radiography along with clinical examination played a major role in diagnosis of maxillofacial fractures. However, it was noted that the overlapping nature of bones and the inability to visualise soft tissue swelling and fracture displacement, especially in face, makes radiography less reliable and useful. Computed tomography (CT), also called as X-ray computed radiography, has helped in solving this problem. This clinical study is to compare three-dimensional (3D) CT reconstruction with conventional radiography in evaluating the maxillofacial fractures preoperatively and effecting the surgical management, accordingly. Materials and Methods: Fifty patients, with suspected maxillofacial fractures on clinical examination, were subjected to conventional radiography and CT face with 3D reconstruction. The number and site of fractures in zygoma, maxilla, mandible and nose, detected by both the methods, were enumerated and compared. The final bearing of these additional fractures, on the management protocol, was analysed. Results: CT proved superior to conventional radiography in diagnosing additional number of fractures in zygoma, maxilla, mandible (subcondylar) and nasal bone. Coronal and axial images were found to be significantly more diagnostic in fracture sites such as zygomaticomaxillary complex, orbital floor, arch, lateral maxillary wall and anterior maxillary wall. Conclusion: 3D images gave an inside out picture of the actual sites of fractures. It acted as mind’s eye for pre-operative planning and intra-operative execution of surgery. Better surgical treatment could be given to 33% of the cases because of better diagnostic ability of CT.

scholarly journals Accuracy of SEEG Electrodes Implanted in Lateral Position Versus Supine Position

Neurosurgery ◽  
2019 ◽  
Vol 66 (Supplement_1) ◽  
Author(s):  
Caio M Matias ◽  
Sandeep Kandregula ◽  
Chengyuan Wu ◽  
Ashwini D Sharan
Keyword(s):  
Supine Position ◽  
Three Dimensional ◽  
Major Complication ◽  
Lateral Position ◽  
Entry Point ◽  
Target Point ◽  
Robot Assisted ◽  
Dimensional Error ◽  
Electrode Implantation ◽  
Position Group

Abstract INTRODUCTION Accuracy during SEEG implantations is critical as several electrodes will cross narrow corridors between cerebral blood vessels. Previous studies have compared the accuracy of different techniques such as frame-based, frameless, and robot-assisted implantations and overall SEEG has been reported to be quite safe, with a major complication incidence of less than 1%. Typically, the supine position is utilized for implantation; however, the lateral position may be more comfortable and ergonomic for trajectories with a posterior entry point (eg, posterior approach to the insula). To our knowledge, this is the first study to compare the accuracy of SEEG electrodes implanted in supine position vs lateral position. METHODS About 22 patients who underwent SEEG electrode implantation using Leksell frame fixation and Neuromate robot were included in this study and clustered according to the supine (n = 11) or lateral (n = 11) position. A total of 284 electrodes (Supine: n = 139; Lateral: n = 145) were analyzed. Postoperative Oarm images were co-registered with the preoperative plan on Voxim software. Cartesian coordinates of the entry point (EP) and target point (TP) were obtained from the planned trajectory and the implanted electrode. Three-dimensional error (Euclidian distance) and radial error for EP and TP were calculated. Wilcoxon rank sum test was used to compare lateral versus supine group. RESULTS Radial errors were similar between both groups. EP three-dimensional error was higher in the lateral position group (1.3 mm vs 1.7 mm, P = .004), whereas TP three-dimensional error was higher in the supine position group (2.9 mm vs 1.8 mm, P < .001). CONCLUSION SEEG electrode implantation using frame-based fixation and robot-assisted technique in the lateral position has similar accuracy compared to implantation in the supine position.

Titanium Three-Dimensional Printed Cranioplasty for Fronto-Nasal Bone Defect

2019 ◽  
Vol 30 (6) ◽  
pp. 1802-1805 ◽  
Author(s):  
Charles Champeaux ◽  
Sébastien Froelich ◽  
Yohan Caudron
Keyword(s):  
Bone Defect ◽  
Three Dimensional ◽  
Nasal Bone

scholarly journals Assessment of the fetal nasal bone at 11-14 weeks of gestation by three-dimensional ultrasound

2004 ◽  
Vol 23 (3) ◽  
pp. 232-236 ◽  
Author(s):  
G. Rembouskos ◽  
S. Cicero ◽  
D. Longo ◽  
H. Vandecruys ◽  
K. H. Nicolaides
Keyword(s):  
Three Dimensional ◽  
Nasal Bone ◽  
Fetal Nasal Bone

scholarly journals Preliminary Three-Dimensional Volumetric Analysis of New Technique of Open Septal Reduction using Polydioxanone Plates for Nasoseptal Fracture

2020 ◽  
Author(s):  
Kyubeom Kim ◽  
Junhyung Kim ◽  
Insik Yun ◽  
Taehee Jo ◽  
Jaehoon Choi ◽  
...  
Keyword(s):  
Ct Scan ◽  
Nasal Obstruction ◽  
Closed Reduction ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Volumetric Analysis ◽  
Interquartile Range ◽  
New Technique ◽  
Nose Scale ◽  
Quality Of Life Scale

Objectives: In this study, we designed a new technique for open septal reduction using a polydioxanone (PDS) plate and compared it with closed reduction. Design, Setting, Participants: This study included nineteen consecutive patients with nasoseptal fracture: ten receiving open reduction with a PDS plate (PDS group) and nine undergoing closed reduction (CR group). Open septal reduction was performed after closed reduction for nasal bone fracture. A mucoperichondrial flap was unilaterally elevated, and the deviated septal cartilage was reduced. The PDS plate was inserted horizontally above the vomerine suture. Surgical outcome was analyzed with three-dimensional volumetry and with a quality-of-life scale for nasal obstruction (NOSE scale). Results: Complications included one case of septal perforation in the CR group and one case of PDS exposure and septal hematoma in the PDS group. In the 3D volumetric analysis of the PDS group, the median value of the nasal cavity change significantly differed between 1.14 mL (interquartile range; 0.46 to 2.4) at the preoperative CT scan and 0.33 mL (interquartile range; -0.22 to 1.29) at the postoperative CT scan (**p = 0.0039). The NOSE scale revealed significant improvement in nasal obstruction postsurgically (median value, 42.5 to 7.5; *p = 0.0139) in the PDS group. Conclusion: PDS plates potentially present a new concept of open septal reduction in terms of septal reinforcement compared with the subtractive approach of open septal reduction.

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