Results 171 to 180 of about 5,262 (204)
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American Journal of Obstetrics and Gynecology, 1965
OBSTETRICIANS have sought accurate knowledge of antepartum fetal size for many years. When elective termination of pregnancy is indicated, it is important to be certain that the fetus is of sufficient maturation to survive in the outside environment.
Gail V. Anderson, Jerome W.H. Niswonger
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OBSTETRICIANS have sought accurate knowledge of antepartum fetal size for many years. When elective termination of pregnancy is indicated, it is important to be certain that the fetus is of sufficient maturation to survive in the outside environment.
Gail V. Anderson, Jerome W.H. Niswonger
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Simplified roentgen cephalometry
American Journal of Obstetrics and Gynecology, 1954Abstract 1.1. Cephalometric measurements of 500 cases are reviewed. 2.2. The factors of distortion are considered radiographically and correlated with the actual clinical measurements. 3.3. The actual fetal head diameters may be accurately obtained by subtracting 4.1.5 cm. from the occipitofrontal measurements and 1.8 cm.
Paul S. Andreson +2 more
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BJOG: An International Journal of Obstetrics & Gynaecology, 1979
SummaryAn iterative method of fetal cephalometry for use with real time scanners is described using a flow chart. The method is shown to be capable of yielding measurements having a standard deviation of less than 1 mm and we have found it to be superior to the combined A and B scan technique from which it is derived.
R. E. Richardson, Peter Davies
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SummaryAn iterative method of fetal cephalometry for use with real time scanners is described using a flow chart. The method is shown to be capable of yielding measurements having a standard deviation of less than 1 mm and we have found it to be superior to the combined A and B scan technique from which it is derived.
R. E. Richardson, Peter Davies
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Journal of Craniofacial Surgery, 2007
With the development of x-ray technology and its application to the craniofacial skeleton, numerous landmarks have been described and studied to better diagnose and plan treatment options for anomalies related to facial architecture. The following text serves to highlight the important landmarks and illustrate how they may be used to plan successful ...
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With the development of x-ray technology and its application to the craniofacial skeleton, numerous landmarks have been described and studied to better diagnose and plan treatment options for anomalies related to facial architecture. The following text serves to highlight the important landmarks and illustrate how they may be used to plan successful ...
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THE LIMITATIONS OF ULTRASONIC FETAL CEPHALOMETRY
Obstetrical & Gynecological Survey, 1973SummaryThe sources of error inherent in many commonly used measuring instruments are well understood and documented. This is not the case for ultrasound equipment when used to assess the rate of growth of the fetal skull in utero. This paper describes various sources of error which can affect the measurement of the fetal biparietal diameter; it also ...
V. Farr +3 more
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Fetal Cephalometry in an Australian Population
Australasian Radiology, 1980SUMMARY 670 measurements of biparietal diameter at varying gestations were obtained from 510 women who had normal singleton pregnancies of known gestation. A graph showing the mean and upper and lower confidence limits of biparietal diameter and gestation has been prepared.
M. W. O'halloran +2 more
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Interobserver reliability in xeroradiographic cephalometry
American Journal of Orthodontics, 1979Observer agreement on cephalometric landmarks was compared between xeroradiographs and conventional radiographs of twenty-nine patients. Of fourteen landmarks evaluated, four (condylion, infradentale, Ptm, and ANS) demonstrated clinical significance in favor of the xeroradiograph.
Robert Shaye +2 more
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Evaluation of Vertical Parameters in Cephalometry
Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie, 2007The aim of this study was to determine the validity of different vertical parameters in cephalometry.The cephalograms of 94 patients were used in this study. The inclusion criteria were as follows: skeletal Class I, completion of maximum skeletal growth, and no history of orthodontic therapy.
Robert A. W. Fuhrmann +1 more
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Three-Dimensional Fetal Cephalometry
The Cleft Palate-Craniofacial Journal, 1996Craniofacial growth has been the subject of numerous studies in which different techniques have been elaborated aiming to model this dynamic phenomenon in a rational manner. One of the methods employed is cephalometric analysis applied to the fetus. Generally, however, these studies are confined to the exploration of a single spatial plane (sagittal ...
B. Raphael +6 more
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American Journal of Obstetrics and Gynecology, 1934
Abstract A method is presented for the roentgenographic measurement of the engaged head. The part of the head measured is the magnified shadow of the (oblique) biparietal diameter. The necessary data for reducing the magnification of the shadow are obtained by determining the height of the object above the sensitive film.
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Abstract A method is presented for the roentgenographic measurement of the engaged head. The part of the head measured is the magnified shadow of the (oblique) biparietal diameter. The necessary data for reducing the magnification of the shadow are obtained by determining the height of the object above the sensitive film.
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