scholarly journals Differential assessment of skeletal, alveolar, and dental components induced by microimplant-supported midfacial skeletal expander (MSE), utilizing novel angular measurements from the fulcrum

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Ney Paredes ◽  
Ozge Colak ◽  
Luca Sfogliano ◽  
Islam Elkenawy ◽  
Layla Fijany ◽  
...  
Keyword(s):  
Angular Measurements

Evaluation of Sacroiliac Wedge Rotation to Increase Acetabular Ventroversion

1999 ◽  
Vol 12 (04) ◽  
pp. 173-177 ◽  
Author(s):  
R. L. Aper ◽  
M. D. Brown ◽  
M. G. Conzemius
Keyword(s):  
Hip Joint ◽  
Hip Dysplasia ◽  
Clinical Effect ◽  
Pelvic Osteotomy ◽  
Alternative Method ◽  
Angular Measurements ◽  
Si Joint ◽  
In Vivo Effects ◽  
Canine Hip Dysplasia

SummaryTreatment of canine hip dysplasia (CHD) via triple pelvic osteotomy (TPO) is widely accepted as the treatment that best preserves the existing hip joint. TPO, however, has several important disadvantages. In an effort to avoid some of the difficulties associated with TPO an alternative method of creating acetabular ventroversion (AW) was sought. The purpose of this study was to explore the effects of placement of a wedge in the sacroiliac (SI) joint on A W and to compare this to the effect of TPO on A W . On one hemipelvis a 30° pelvic osteotomy plate was used for TPO. The contralateral hemipelvis had a 28° SI wedge inserted into the SI joint. Pre- and postsurgical radiographs of each pelvis were taken and the angular measurements were recorded. On average, the 28° SI wedge resulted in 20.9° of A W, the 30° canine pelvic osteotomy plate resulted in 24.9° A W . Significant differences were not found (p >0.05) between the two techniques. Sacroiliac wedge rotation effectively creates A W and has several theoretical advantages when compared to TPO. The in vivo effects of sacroiliac wedge rotation should be studied in order to evaluate the clinical effect of the technique.Sacroiliac wedge rotation was tested as an alternative method to increase the angle of acetabular ventroversion. This technique effectively rotated the acetabulum and has several theoretical advantages when compared to triple pelvic osteotomy.

Estimation of Error in Distance, Length, and Angular Measurements Using CCD Pixel Counting Technique

MAPAN ◽  
2021 ◽  
Author(s):  
Rajeev Dwivedi ◽  
Swati Gangwar ◽  
Shibu Saha ◽  
V. K. Jaiswal ◽  
Ranjana Mehrotra ◽  
...  
Keyword(s):  
Counting Technique ◽  
Estimation Of Error ◽  
Angular Measurements

scholarly journals Long-term Follow-up of Craniofacial Alterations in Juvenile Idiopathic Arthritis

2009 ◽  
Vol 79 (6) ◽  
pp. 1057-1062 ◽  
Author(s):  
Marinka Twilt ◽  
Alcuin J. M. Schulten ◽  
Birte Prahl-Andersen ◽  
Lisette W. A. van Suijlekom-Smit
Keyword(s):  
Juvenile Idiopathic Arthritis ◽  
Temporomandibular Joint ◽  
Initial Study ◽  
Study Cohort ◽  
Craniofacial Skeleton ◽  
Lateral Cephalograms ◽  
Long Term Follow Up ◽  
Angular Measurements

Abstract Objective: To investigate changes in the craniofacial skeleton in relation to the changes in condylar alterations that occur during long-term follow-up in patients with juvenile idiopathic arthritis. Materials and Methods: Temporomandibular joint (TMJ) involvement is defined as a condylar alteration that is observed on the orthopantomogram. Lateral cephalograms were used to determine linear and angular measurements. Results: Seventy of 97 patients from the initial study cohort were included, with a mean follow-up of 68 months. The overall prevalence of condylar alterations and posterior rotation of the mandible decreased; however, the prevalence of retrognathia remained the same. Patients showed improvement in the degree of retrognathia and posterior rotation (40% ANB, 51% OP-SN, and 44% GO-GN-SN). Improvement in the degree of retrognathia was seen more often in patients with improved condylar alterations than in patients with persistent alterations and in those without alterations (50%, 33%, and 28%, respectively). The degree of posterior rotation improved almost equally in patients without TMJ involvement and in patients with improved condylar alterations (57% and 50% by OP-SN, and 67% and 38% GO-GN-SN, respectively) and did not improve in patients with stable persistent alterations. Conclusion: Both condylar and craniofacial alterations can improve in patients with juvenile idiopathic arthritis.

Novel onboard sensor systems for making angular measurements on spinning projectiles

2001 ◽  
Author(s):  
Thomas E. Harkins ◽  
Bradford S. Davis ◽  
David J. Hepner
Keyword(s):  
Sensor Systems ◽  
Angular Measurements

Linear Anterior-Posterior Computed Tomography Parameters Used to Quantify Trochlear Dysplasia Are More Reliable Than Angular Measurements

2020 ◽  
Author(s):  
Peter Wilhelm Ferlic ◽  
Armin Runer ◽  
Christopher Seeber ◽  
Maria Thöni ◽  
Anna Spicher ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Trochlear Dysplasia ◽  
Angular Measurements ◽  
Anterior Posterior

scholarly journals Photographic Facial Soft Tissue Analysis by Means of Linear and Angular Measurements in an Adolescent Persian Population

2015 ◽  
Vol 9 (1) ◽  
pp. 346-356 ◽  
Author(s):  
Vahid Moshkelgosha ◽  
Sheida Fathinejad ◽  
Zeinab Pakizeh ◽  
Mohammad Shamsa ◽  
Ali Golkari
Keyword(s):  
High School Students ◽  
Sexual Dimorphism ◽  
Soft Tissue ◽  
Computer Software ◽  
Facial Soft Tissue ◽  
School Students ◽  
Angular Measurements ◽  
Mouth Width ◽  
Student’S T ◽  
Student’S T Test

Objective : To obtain objective average measurements of the profile and frontal facial soft tissue to be used as a guide for aesthetic treatment goals. Methods and Materials : This observational study included 110 females and 130 males high school students aged 16-18 years. None of the subjects had any facial deformities. All of them and their parents gave consent to take part in this study. In each case, two standard photographs of profile and frontal views were taken 27 landmarks were digitized on photographs. The mean, standard deviation, and range for a total of 43 facial indices were calculated digitally by computer software. The Student’s t-test was used to compare males and females. Results : The ratio between the lower and middle facial thirds was one to one, but the height of the upper facial third was proportionally smaller than the other two-thirds in both sexes. Boys had greater nasal length, depth, and prominence than girls with statistically significant differences. Both upper and lower lips were more prominent in girls than in boys. All measurements of the chin showed sexual dimorphism characterized by greater chin height and prominence and deeper mentolabial sulcus. Boys had greater facial dimensions than girls. Mouth width, nasal base width, and intercanthal distance were significantly greater in boys. Conclusion : The labial, nasal, and chin areas showed sexual dimorphism in most of the parameters used in this study. Boys had larger faces, greater facial heights, longer nasal, labial, and chin lengths, and greater nasal, labial, and chin prominence.

Design of a 3D printed compact interferometric system and required phone application for small angular measurements

2018 ◽  
Vol 89 (10) ◽  
pp. 103111 ◽  
Author(s):  
I. Hussain ◽  
P. Nath
Keyword(s):  
Angular Measurements ◽  
3D Printed

Linear and angular measurements of the mandible during maximal mouth opening

1996 ◽  
Vol 54 (8) ◽  
pp. 970-974 ◽  
Author(s):  
Toshitaka Muto ◽  
Masaaki Kanazawa
Keyword(s):  
Mouth Opening ◽  
Angular Measurements ◽  
Maximal Mouth Opening

Iliac angular measurements in Australopithecus

1981 ◽  
Vol 10 (4) ◽  
pp. 293-302 ◽  
Author(s):  
J.L. de Arsuaga
Keyword(s):  
Angular Measurements

scholarly journals Cloud information content analysis of multi-angular measurements in the oxygen A-band: application to 3MI and MSPI

2016 ◽  
Vol 9 (10) ◽  
pp. 4977-4995 ◽  
Author(s):  
Guillaume Merlin ◽  
Jérôme Riedi ◽  
Laurent C. Labonnote ◽  
Céline Cornet ◽  
Anthony B. Davis ◽  
...  
Keyword(s):  
Information Content ◽  
Surface Albedo ◽  
Signal To Noise Ratio ◽  
Quantitative Information ◽  
High Accuracy ◽  
Polarization Imaging ◽  
Angular Measurements ◽  
Black Surface ◽  
Imaging Instrument ◽  
Almost All

Abstract. Information content analyses on cloud top altitude (CTOP) and geometrical thickness (CGT) from multi-angular A-band measurements in the case of monolayer homogeneous clouds are conducted. In the framework of future multi-angular radiometer development, we compared the potential performances of the 3MI (Multi-viewing, Multi-channel and Multi-polarization Imaging) instrument developed by EUMETSAT, which is an extension of POLDER/PARASOL instrument and MSPI (Multiangle SpectroPolarimetric Imager) developed by NASA's Jet Propulsion Laboratory. Quantitative information content estimates were realized for thin, moderately opaque and opaque clouds for different surface albedo and viewing geometry configurations. Analyses show that retrieval of CTOP is possible with a high accuracy in most of the cases investigated. Retrieval of CGT is also possible for optically thick clouds above a black surface, at least when CGT > 1–2 km and for thin clouds for CGT > 2–3 km. However, for intermediate optical thicknesses (COT ≃ 4), we show that the retrieval of CGT is not simultaneously possible with CTOP. A comparison between 3MI and MSPI shows a higher information content for MSPI's measurements, traceable to a thinner filter inside the oxygen A-band, yielding higher signal-to-noise ratio for absorption estimation. Cases of cloud scenes above bright surfaces are more complex but it is shown that the retrieval of CTOP remains possible in almost all situations while the information content on CGT appears to be insufficient in many cases, particularly for COT < 4 and CGT < 2–3 km.

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