Natural head position recording on frontal skull radiographs

1989 ◽  
Vol 42 (2) ◽  
pp. 105-109
Author(s):  
Jan Huggare
Keyword(s):  
Head Position ◽  
Skull Radiographs

scholarly journals Changes in head posture after rapid palatal expansion in mouth-breathing children.

2021 ◽  
Vol 4 (2) ◽  
pp. 7-14
Author(s):  
Silvia Izabella Pop ◽  
Martha Krisztina ◽  
Laura Roxana Contac ◽  
Sandor Henrietta
Keyword(s):  
Pearson Correlation ◽  
Head Position ◽  
Rapid Maxillary Expansion ◽  
Mouth Breathing ◽  
Maxillary Expansion ◽  
Head Posture ◽  
Rapid Palatal Expansion ◽  
Before And After ◽  
Pearson Correlation Test ◽  
Skull Radiographs

Abstract Introduction. It is well known that previously has been demonstrated a correlation between respiratory function and the harmonious craniofacial development and head posture respectively. Aim of the study. The purpose of this study was to investigate the correlation between rapid maxillary expansion (RME) and the change in natural head position (NHP) resulting from the consequent change in airway resistance and to elucidate how RME influences NHP in terms of cephalometric angles in children with nasal obstruction. Material and methods. The study included 12 girls and 8 boys who had a history of mouth breathing, as confirmed by the parents and ORL specialist and due to this fact, they underwent RME as part of orthodontic treatment. Dental casts, clinical photographs and lateral skull radiographs exposed in natural head position were obtained at the first visit (T1) and 8-10 months (T2) later for all subjects. In order to evaluate the patient’s lateral skull radiographs, I used AudaxCeph software, within which I created a new type of analysis. Student T test and Pearson correlation test were used to statistically analyze the results. Results. Our findings demonstrate that no significant changes in any of the variables are observed in patients treated with rapid maxillary expansion, however a positive correlation was observed in the variables measured before and after the treatment, respectively between the anomaly and the measured values. Positivity can also be detected when examining the correlation between the patient’s gender and the measured values. Conclusions. Based on the obtained results, we cannot state that there is a correlation between rapid maxillary expansion and cervical posture.

Head Position Identification

1967 ◽  
Vol 10 (3) ◽  
pp. 438-448
Author(s):  
H. N. Wright
Keyword(s):  
Roc Curve ◽  
Head Position ◽  
Hearing Impaired ◽  
Type Ii ◽  
Experimental Conditions ◽  
Partial Explanation ◽  
Complex Sounds ◽  
Binaural Cues ◽  
Criterion Behavior ◽  
Stimulus Degradation

A binaural recording of traffic sounds that reached an artificial head oriented in five different positions was presented to five subjects, each of whom responded under four different criteria. The results showed that it is possible to examine the ability of listeners to localize sound while listening through earphones and that the criterion adopted by an individual listener is independent of his performance. For the experimental conditions used, the Type II ROC curve generated by manipulating criterion behavior was linear and consistent with a guessing model. Further experiments involving different degrees of stimulus degradation suggested a partial explanation for this finding and illustrated the various types of monaural and binaural cues used by normal and hearing-impaired listeners to localize complex sounds.

The percentage of migration as indicator of femoral head position

1988 ◽  
Vol 29 (3) ◽  
pp. 363-366 ◽  
Author(s):  
O. Eklof ◽  
H. Ringertz ◽  
L. Samuelsson
Keyword(s):  
Femoral Head ◽  
Head Position

The Comparison of Intrapartum Sonographic Signs and Digital Examination in Fetus with Cephalic Presentation

2020 ◽  
Vol 103 (11) ◽  
pp. 1178-1184
Keyword(s):  
Pregnant Women ◽  
Cross Sectional Study ◽  
Head Position ◽  
Vaginal Examination ◽  
Fetal Head ◽  
Cross Sectional ◽  
Percent Agreement ◽  
Anterior Position ◽  
Fetal Head Position ◽  
Digital Vaginal Examination

Objective: The agreement of fetal head position examined by digital vaginal examination (DVE) and intrapartum sonographic signs (ISS) in pregnant women during labor. Materials and Methods: A cross-sectional study was conducted. Two hundred eight-term singleton pregnant women attending labor at Ramathibodi Hospital, Thailand with the fetal cephalic presentation, cervical dilatation of 4 to 8 cm, station –2 or below and no contraindication for DVE were enrolled. The DVE evaluating fetal head position was performed by the third-year obstetrical residents. After DVE, ISS via transabdominal ultrasound for determining fetal head position was obtained immediately by the first researcher. The DVE report and the ultrasonographic images of ISS were recorded separately. The fetal head position based on ISS was designated by the second researcher blinded to the DVE result. The agreement of DVE and ISS for determining fetal head position was analyzed. Results: Two hundred eight pregnant women were analyzed. The fetal head position detected by DVE was consistent with that of ISS at 41.3% (p<0.001). The most percent agreement was observed in the fetus with left occiput anterior position at 72.7% (p<0.001). The lowest percent agreement was found in the direct occiput posterior at 14.3% (p=0.243). Parity, gestational age, current body mass index, epidural analgesia, cervical effacement, caput succedaneum, molding, and station did not significantly affect the discrepancy between DVE and ISS. Conclusion: The agreement between DVE and ISS for evaluating the fetal head position was low. The ISS might be considered for evaluating the fetal head position. Keywords: Fetal head position, Intrapartum sonographic sign, Digital vaginal examination

scholarly journals Effect of computer-assisted-learning and simulation clinics on dental students’ cognitive and performance skills: panoramic image errors related to patient’s head position

2020 ◽  
Vol 49 (7) ◽  
pp. 20200154
Author(s):  
Ann Wenzel ◽  
Louise Hauge Matzen ◽  
Rubens Spin-Neto ◽  
Lars Schropp
Keyword(s):  
Test Scores ◽  
Cognitive Skills ◽  
Dental Students ◽  
Head Position ◽  
Cognitive Test ◽  
Computer Assisted ◽  
Patient Exposure ◽  
Performance Skills ◽  
Positioning Errors ◽  
And Performance

Objectives: To assess dental students’ ability to recognize head positioning errors in panoramic (PAN) images after individual learning via computer-assisted-learning (CAL) and in a simulation clinic (SIM). Both cognitive skills and performance in patient examination were assessed. Methods and materials: 60 students (mean age 23.25 years) participated in lectures on the relation between PAN-image errors and patient’s head position. Immediately after they took a test, based on which they were randomized to three groups: control (CON) group, CAL group, and SIM group (both CAL and training in a simulation clinic with a phantom). 4–5 weeks after intervention/no intervention, all students individually examined a patient with PAN-exposure. A blinded rater, not knowing group allocation, supervised patient exposure and assessed student’s performance (correct/incorrect head position in three planes). 1–2 weeks after, the students scored positioning errors in 40 PAN-images. Differences in cognitive test scores between groups were evaluated by ANOVA and in patient examination by χ2 tests, and within-group differences by sign-tests. Results: No statistically significant difference in cognitive test scores was seen between the SIM and CAL group, while the CON group scored lower (p < 0.003). In all groups, several students positioned the patient incorrectly in the Frankfort horizontal plane. All students performed well in the sagittal plane. Students in SIM group positioned the patient more correctly in the coronal plane. Conclusions: Training with CAL increased students’ cognitive skills compared with a control group. Simulated patient exposure with a phantom increased to some extent their performance skills in examination of patients.

scholarly journals Benign Paroxysmal Positional Vertigo Treated with Maneuvers to Change Head Position.

1995 ◽  
Vol 88 (7) ◽  
pp. 857-862
Author(s):  
Takayoshi ITAYA ◽  
Hiroya KITANO ◽  
Yoshiro YAZAWA ◽  
Akira KODAMA ◽  
Ichiro KOMADA ◽  
...  
Keyword(s):  
Benign Paroxysmal Positional Vertigo ◽  
Head Position ◽  
Positional Vertigo ◽  
Paroxysmal Positional Vertigo
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