Results 191 to 200 of about 4,028 (215)
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Extracting structure-tokens of cephalograms
1995 IEEE International Conference on Systems, Man and Cybernetics. Intelligent Systems for the 21st Century, 2002Presents an algorithm and representation scheme for extracting structure tokens of cephalograms directly from X-ray images. The method is based on a principle of visual perception, i.e., edge partitioning and grouping which simulates human visual process on edge perception in certain aspects.
Qigang Gao, R.X. Wang
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Automatic Analysis Of Landmarks In Cephalograms
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society Volume 13: 1991, 2005Landmarks on the cephalograms are those representing the actual anatomic structures of the skull. These points are used by orthodontists for diagnosis and treatment planning. In this study, a microcomputer system with a desk-top scanner was employed for locating the landmarks of X-ray cephalogram automatidy.
Yen-Ting Chen +2 more
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Predicting vertical dimension with cephalograms, for edentulous patients
Gerodontology, 2005Objectives: To provide information on vertical dimension (VD), occlusal plane (OP), and size of future occlusal rims, through lateral Rx and cephalometric tracings that analyse and compare hard and soft tissue. To show that these measures are compatible with methods routinely used to prescribe for full.Design: Ten patients age range 53–81. Lateral Rx,
D Brzoza +3 more
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Automatic Landmarking of Cephalograms by Cellular Neural Networks
2005Cephalometric analysis is a time consuming measurement process by which experienced orthodontist identify on lateral craniofacial X-rays landmarks that are needed for diagnosis and treatment planning and evaluation. High speed and accuracy in detection of craniofacial landmarks are widely demanded.
GIORDANO D +4 more
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Mandibular remodeling measured on cephalograms: 2.
American Journal of Orthodontics and Dentofacial Orthopedics, 1992This study quantifies the differences in the perceived pattern of mandibular remodeling when two different methods are used to superimpose roentgenographic images of the mandible. Lateral cephalograms for a group of subjects with metallic implants of the Bjork type were superimposed twice; first on the metallic implants and then independently on ...
Sean Curry +4 more
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Heritability of nasal characteristics assessed using lateral cephalograms
American Journal of Orthodontics and Dentofacial Orthopedics, 2022The midface and nasal bones have a significant influence on facial esthetics. Being able to predict the ultimate size of a growing patient's nose may influence the orthodontic treatment plan. Our study aimed to determine whether significant heritability exists between parents and children using multiple soft and hard tissue measurements of nasal ...
Ahmed A. Alsulaiman +3 more
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Automated processing of cephalograms, facial photographs and dental casts
American Journal of Physical Anthropology, 1974AbstractAn automated methodology has been developed for analyzing cephalograms, facial photographs, and dental models. A digitizer is used as an input device for converting all three forms of data into Cartesian co‐ordinates. The data are stored on computer disks for data processing.
Frank Popovich, G. W. Thompson
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A comparison of scanned lateral cephalograms with corresponding original radiographs
American Journal of Orthodontics and Dentofacial Orthopedics, 2006Digital cephalometric radiography is gaining popularity in orthodontic practices. However, few studies have compared measurements and superimpositions on analog radiographs with those made on scanned digital images. The objectives of this study were to evaluate distortion associated with scanning lateral cephalograms and printing to hard copy, and to ...
Mark G. Hans +3 more
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A composite photographic image – could it replace a lateral cephalogram?
Journal of Orthodontics, 2017Computer software allows a photograph of patient's face and a photograph of their dental casts to be combined into one image, similar to that seen in a lateral cephalogram. The aim of this study was to assess the agreement between the measurements carried out on this novel composite photographic image and those taken from a lateral cephalogram of the ...
Joseph Noar +3 more
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Reliability of landmark recording on film and digital lateral cephalograms
The European Journal of Orthodontics, 1993The aims of this study were: (a) to evaluate reliability of landmark location in digital processed images of film cephalograms of varying quality with that obtained in the films, and (b) to evaluate the pattern of error in landmark location with the two techniques.
Vincenzo Macri, Ann Wenzel
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