|
KMID : 0357520070300020105
|
|
Journal of Radiological Science and Technology
2007 Volume.30 No. 2 p.105 ~ p.111
|
|
|
A Study on Projection Angles for an Optimal Image of PNS Water’s View on Children
|
|
Son Sang-Hyuk
Song Young-Keun
Hong Sang-Woo
Kim Sung-Gyu
Kim Je-Bong
|
|
|
Abstract
|
|
|
|
This study is to calculate the proper angle for the optimal image of PNS Water’s view on children, comparing and analyzing the PNS Water’s projection angles between children and adults at every age. This study randomly selected 50 patients who visited the Medical Center from January to May in 2005, and examined the incidence path of central ray, taking a PNS Water’s and skull trans-Lat. view in Water’s filming position while attaching a lead ball mark on the Orbit, EAM, and acanthion of the patients’s skull. And then, we calculated the incidence angles(Angle A) of the line connected from OML and the petrous ridge to the inferior margin of maxilla on general(random) patients’s skull image, following the incidence path of central ray. Finally, we analyzed two pieces of the graphs at ages, developing out the patients’ ideal images at PNS Water’s filming position taken by a digital camera, and calculating the angle(Angle B) between OML and IP(Image Plate). The angle between OML and IP is about in 4-years-old children, which is higher than , as age increases the angle decreases, it goes to around 30 years of age. That is similar result to maxillary growth period. We can get better quality of Water’s image for children when taking the PNS Water’s view if we change the projection angles, considering maxillary growth for patients in every age stage.
|
|
|
KEYWORD
|
|
|
Water’s view, OML, Image Plate(IP), inferior margin of maxilla, petrous ridge, PNS Water’s view
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|