CN1141911C

CN1141911C - Head image measuring method using digital curved panoramic X-ray machine

Info

Publication number: CN1141911C
Application number: CNB001242040A
Authority: CN
Inventors: 王朝俭
Original assignee: YINCHUAN-CITY STOMATOLOGICAL HOSPITAL
Current assignee: YINCHUAN-CITY STOMATOLOGICAL HOSPITAL
Priority date: 2000-08-08
Filing date: 2000-08-08
Publication date: 2004-03-17
Anticipated expiration: 2020-08-08
Also published as: CN1297139A

Abstract

The present invention provides a head image measuring method for a digital curved surface panoramic X-ray machine, which overcomes the defects that the traditional measurement method is harmful to human bodies' health, has unscientific and inaccurate measurement data and has great difficulty of measurement. The existing digital curved surface panoramic X-ray machine is matched with a computer, a measured digitalized head image is displayed on the display of the computer, and an included angle between lines connecting anatomical marker points is measured by the method of direct reading or by using an auxiliary line. The head image measuring method has the advantage of accurate and scientific measurement, the application range of the existing equipment can be enlarged, the cost can be reduced, and the efficiency can be increased.

Description

Head image measuring method using digital curved panoramic X-ray machine

Technical field

The present invention relates to the use of medical apparatus and instruments, is a kind of method of utilizing the digital curved panoramic X-ray machine to carry out cephalometry.

Background technology

In medical science jaw facial radiology orthodontics field, often need utilize the angle of cut and line-spacing between X-ray film measurement anatomic landmark point, traditional method be clap X-ray film, utilize the described point setting-out on X-ray film of acetic acid paper, reuse ruler protractor is measured, or utilize acetic acid paper after described point setting-out on the X-ray film, after the enterprising line scanning of scanner, draw measured value again.Traditional method is measured, at first must allow the patient take common X-ray film, accept heavy dose of x-ray, its health is constituted a threat to, in addition, if the definition of common X-ray film is not enough, just can't obtain measuring point comparatively accurately, scanning result just can't guarantee its science and accuracy, so just directly influences diagnostic result.

Summary of the invention

The purpose of this invention is to provide a kind of digitizer that utilizes and measure, the definition height is measured head image measuring method using digital curved panoramic X-ray machine accurate, simple to operate.

For achieving the above object, the present invention is by the following technical solutions:

Head image measuring method using digital curved panoramic X-ray machine, utilize the digital curved panoramic machine to take the human body head digitized image, transfer to computer then, and be shown on the computer display, utilization is shown in the digitized image on the computer display, at first determines each anatomic landmark point, to required some click line, when each required angle of cut was shown within the display, these angles of cut all can directly be read; When the angle of cut of required measurement intersects at outside the display window, standardized boost line between two lines that intersect then, this boost line and above-mentioned two lines produce the angle of cut, read that boost line and line wherein intersect the outer angle of cut and the interior angle of cut that intersects with another line, two angles of cut subtract each other the angle of cut that promptly must measure.

The present invention has following effect:

(1) enlarges the scope of application of existing digitizer, saved investment.

(2) owing to can carry out convergent-divergent to image on display, contrast and shade of gray etc. can be adjusted, and has guaranteed the quality of image, has improved accuracy and the science measured.

Wash film without chemical agent during (3) owing to measurement, reduced pollution, thereby had better economic benefit and social benefit environment.

Description of drawings

Fig. 1 is a digital curved panoramic X-ray machine work block diagram.

Fig. 2 is a head digitized image anatomic points sketch map.

Fig. 3 is the boost line instrumentation plan.

The specific embodiment

With the side position is example, as shown in Figure 1, this digital curved panoramic X-ray machine is SIRONA, computer is equipped with corresponding SIDEXIS4.2GB software and cooperates with it, human body head digitized image by the shooting of SIRONA digital curved panoramic X-ray machine, can directly be shown on the computer display, support software is SIDEXIS4.2GB, at first determining each anatomic landmark point, as shown in Figure 2, is the human body head digitized image among the figure, the lines of being given on it are for connecting the line of each anatomic landmark point, concrete anatomic landmark point is nasion Na, a A, b B, pogonion Po; Sella turcica S, following frontal eminence point Gn, auriculare P, eye-ear plane FH, angle of mandible plane MP, sn SN, above-mentioned connecting line is in connection procedure, utilize SIDEXIS4.2GB directly can read two angles of cut between crossing line, in Fig. 2, SNA=81, SNB=76, ANB=5 need be shown in the computer display surface but prerequisite is this angle of cut, two lines that just will intersect, its joining can not be handed over outside the display indication range, makes this intersection point can not use click.If above-mentioned situation, can be as shown in Figure 3, standardized boost line EF between online AB and line CD, boost line EF and line AB, line CD intersect two angles of cut of generation, because intersection point clearly is shown in the display indication range, utilizes SIDEXIS4.2GB, angle of cut b and outer angle of cut a in can directly reading, thereby utilize geometrical principle, measure angle of cut α=∠ b-∠ a of line AB and line CD.

Claims

1. head image measuring method using digital curved panoramic X-ray machine, utilize the digital curved panoramic machine to take the human body head digitized image, transfer to computer then, and be shown on the computer display, utilization is shown in the digitized image on the computer display, at first determines each anatomic landmark point, to required some click line, it is characterized in that these angles of cut all can directly be read when each required angle of cut is shown within the display; When the angle of cut of required measurement intersects at outside the display window, standardized boost line between two lines that intersect then, this boost line and above-mentioned two lines produce the angle of cut, read the outer angle of cut that boost line and line wherein intersect and the interior angle of cut that intersects with another line, two angles of cut subtract each other the angle of cut that promptly must measure.