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A STUDY ON THE APPLICATION OF DYNAMIC TOMOGRAM OF THE HUMAN HEAD

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Abstract

ÀúÀڴ Ư¼öȯ¿µ ÀåÄ¡ ¹× Ư¼ö Æǵ¶»óÀÚ¸¦ Á¦ÀÛÇÏ¿© dynamic tomogramÀÇ ¿ø¸®¸¦ Àç°ËÁõ
ÇÏ°í, ¶ÇÇÑ ÃÔ¿µ½Ã »ç¿ëµÇ´Â Çʸ§ ¼ö¿¡ µû¸¥ ³ëÃ⠽ð£ÀÇ º¯È­, ±×¸®°í °üÀü¾ÐÀÇ º¯È­¿Í ÇÊ
¸§ÀÇ Á¾·ù¿¡ µû¶ó ÃÔ¿µÇÏ¿© äµæÇÑ Çʸ§À» ºñ±³ ºÐ¼®ÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. Çʸ§°ú µÎ°³°ñÀ» ½Ã°è¹æÇâ°ú ½Ã°è¹Ý´ë ¹æÇâÀ¸·Î °¢µµ¸¦ º¯È­½ÃÄÑ ÃÔ¿µÇÑ Àú³ëÃâ ¹æ»ç
¼±»çÁøµéÀ» Áßø½ÃÄѼ­ Çʸ§À» Ãø¹æÀ̵¿Çغ¸¸é ÁÂÃø ¹× ¿ìÃø ¾Ç°ñ ¹× Ä¡¾Æ¿¡ ÃÊÁ¡À» ¸ÂÃâ
¼ö ÀÖ¾ú´Ù.
2. °¢ ÃÔ¿µÁ¶°Ç¿¡ µû¸¥ 2ÀåÀÇ Àú³ëÃâ Çʸ§À» Áßø½ÃÅ°¸é À°¾ÈÀûÀ¸·Î ¾à°£ÀÇ È¤È­µµ Â÷ÀÌ
°¡ ÀÖ¾úÀ¸¸ç, densitometer·Î Ȥȭµµ¸¦ ÃøÁ¤ÇÑ °á°úÄ¡´Â 75kVpÀ϶§´Â 1.23¿¡¼­ 1.57, 90kVp
ÀÏ ¶§´Â 1.34¿¡¼­ 1.70À̾ú´Ù.
3. Çʸ§ÀÇ Á¾·ù¿¡ µû¸¥ 2ÀåÀÇ Àú³ëÃâ Çʸ§À» Áßø½ÃÅ°¸é À°¾ÈÀûÀ¸·Î °ÅÀÇ ºñ½ÁÇßÀ¸¸ç,
densitometer·Î Ȥȭµµ¸¦ ÃøÁ¤ÇÑ °á°úÄ¡´Â 1.34¿¡¼­ 1.37À̾ú´Ù.
4. °¢ ÃÔ¿µÁ¶°Ç¿¡ ÀÇÇØ ÃÔ¿µÇÏ¿© äµæµÈ °¢7ÀåÀÇ Çʸ§µéÀ» Æǵ¶»óÀÚÀ§¿¡ »÷µåÀ§Ä¡½ÄÀ¸·Î
Áßø½ÃÄÑ º¸¸é ÃÔ¿µ Á¶°Ç¿¡ °ü°è¾øÀÌ Æǵ¶»óÀÚÀÇ ºûÀÌ Çʸ§À» Åõ°úÇÏÁö ¸øÇß´Ù.
5. Çʸ§ Á¾·ù¿¡ µû¶ó ÃÔ¿µÇÑ °¢ 7ÀåÀÇ Çʸ§µéÀ» Æǵ¶ »óÀÚÀ§¿¡ Áßø½ÃÄÑ º¸¾Æµµ ÀÌ Çʸ§
µéÀÇ ÃÑ ÈæÈ­µµ¸¦ Åõ°úÇϱâ À§Çؼ­´Â ´õ °­ÇÑ ºû ÀÌ ¿ä±¸µÇ¾ú´Ù.
6. Çʸ§°ú ÇÇ»çüÀÇ °£°ÝÀÌ Å©¸é »óÀÇ È®´ë¿Í »óÀÇ È帲ÀÌ ÀÖ¾ú´Ù.
#ÃÊ·Ï#
The purpose of this study was to establish the principle and the clinical application of
dynamic tomogram of a human head by using the dental machine.
For this study, a block of wax with details tying at three parallel planes and a human
dry skull were used.
This experiment was reexamined the dynamic tomogram with specialized radiographic
device and view box, and the radiograms taken by the change of exposure time
according to the numbers of film used in x-ray taking and taken according to the
change of kVp and the types of film were analyzed density with the densitometer.
From this study, the obtained results were as follows : .
1. When the underexposed radiograms taken by angulation of clockwise and
counter-clockwise direction of the film and skull were superimposed and moved laterally,
it was possible to focus on right and left jaws and teeth.
2. The superimposition of the two underexposed radiograms according to each
condition of x-ray taking showed some differencies in density visually, and the
measurement of density with the densitometer was 1.23 to 1.57 in 75kVp and 1.34 to
1.70 in 90kVp.
3. The superimposition of the two underexposed radiograms according to the kinds of
x-ray film showed almost equal density visually, and the measurement of density with
the densiometer was 1.34 to 1.37.
4. When seven radiograms taken by each condition of x-ray taking were
superimposed on the view box, a intense rear light of view box didn't transilluminate
film density regardless of the conditions of x-ray taking.
5. Even though seven radiograms taken according to types of film were superimposed
on the view box, a more intense rear light of view box was required to transilluminate
total density of films.
6. Long film-object distance resulted in the enlargement and blurring of radiographic
images.

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