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Determination of the adequate resolution and compression method in teleradiology

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Abstract

¿ä¾à
º» ¿¬±¸´Â ¿ø°Ý Áø´Ü½Ã½ºÅÛ¿¡¼­ Çʸ§ ½ºÄ³³Ê¸¦ ÀÌ¿ëÇÏ¿© ÀǷ῵»óÀ» µðÁöŻȭÇÒ¶§ °¡Àå
ÀûÀýÇÑ ÇØ»óµµ¿Í ¾ÐÃà¹æ¹ýÀ» °áÁ¤Çϱâ À§ÇØ ½ÃµµµÇ¾ú´Ù. ºñÁ¤»ó ¼Ò°ßÀ» º¸ÀÌ´Â 12ÀåÀÇ Æijë
¶ó¸¶¹æ»ç¼±»çÁøÀ» transparency unit°¡ ºÎÂøµÈ Umax»çÀÇ Powerlook flatbed scanner¸¦ »ç
¿ëÇÏ¿© °¢°¢ 50dpi, 75dpi, 1506pi, 3006pj, 6006pi, 12006DiÀÇ Çػ󵵷Π½ºÄµÇÏ¿©, °¢ ÇØ»óµµ
ÀÇ ¿µ»óÀÇ »ó´ëÀûÀÎ Æǵ¶´ÉÀ» »êÃâÇÏ¿´°í, JPEG ¾ÐÃàÀÇ maximum quality, high quality,
cuddle quality, low duality·Î ¾ÐÃàÇÏ¿©, ´«À¸·Î ÀÎÁö °¡´ÉÇÑ ÁúÀÇ ÀúÇÏ°¡ ÀÖ´ÂÁö ¿©ºÎ¿Í ÀÖ
´Â °æ¿ì ±×°ÍÀÌ Áø´ÜÇÐÀû Á߿伺ÀÌ ÀÖ´ÂÁö ¿©ºÎ¸¦ Æò°¡ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. 3006pi, 6006pi, 1200dpi ·Î ½ºÄµÇÑ ¿µ»ó±º¿¡¼­ »ó´ëÀû Æǵ¶´ÉÀÌ 100%·Î,½ÇÁ¦ Æijë¶ó¸¶
¹æ»ç¼±»çÁø°ú µ¿ÀÏÇÑ Æǵ¶´ÉÀ» º¸¿´´Ù.
2. JPEG¾ÐÃà¿¡¼­ low quality·Î ¾ÐÃà½Ã ¸ðµç ÆÄÀÏ¿¡¼­ ÀÎÁö°¡´ÉÇÑ ÁúÀÇ ÀúÇÏ°¡ ÀÖ¾ú°í,
12·Ê Áß 8·Ê°¡ Áø´ÜÇÐÀû Á߿伺ÀÌ ÀÖ´Â ÁúÀÇ ÀúÇÏ·Î Æò°¡µÇ¾ú°í, middle quality ·Î ¾ÐÃà½Ã
12·ÊÁß 3·Ê¿¡¼­ ÀÎÁö°¡´ÉÇÑ ÁúÀÇ ÀúÇÏ°¡ ÀÖ¾úÀ¸³ª, Áø´ÜÇÐÀû Á߿伺Àº ¾ø¾ú´Ù.
ÀÌ»óÀÇ ¿¬±¸°á°ú·Î ¹Ì·ç¾î º¸¾Æ ¿ø°Ý Áø´Ü½Ã½ºÅÛ¿¡¼­ Çʸ§ ½ºÄ³³Ê¸¦ ÀÌ¿ëÇÏ¿© ÀǷ῵»óÀ»
µðÁöŻȭÇÒ¶§ Çʸ§°ú ´ëµîÇÑ Æǵ¶´ÉÀ» º¸À̸鼭, ¿µ»óÆÄÀÏÀÇ ¿ë·®ÀÌ ÃÖ¼ÒÀÎ °¡Àå ÀûÀýÇÑ ÇØ
»óµµ´Â 300dpiÀ̸ç, Áø´ÜÇÐÀû Á߿伺ÀÌ ÀÖ´Â ÁúÀÇÀúÇϸ¦ ¾ß±âÇÏÁö ¾Ê´Â ¾ÐÃà¹æ¹ýÀº middle
qualityÀÇ JPEG¾ÐÃàÀ¸·Î ÆǴܵȴÙ.
#ÃÊ·Ï#
This study was performed to determine the adequate resolution and compression
method in teleradiology. A digital imaging system using Mackintosh ¥± ci computer, 1
5¡Æ Sony high resolution RGB monitor, Umaxpowerlook flatbed scanner with
transparency unit and 12 panoramic radiographs were used.
The results were as follows :
1. Relative detectability at the group scanned by 300dpi, 600dpi and 1200dpi was same
as those at the real Panoramic radiographs.
2. Perceivable image Quality degradation was found at the 25% of midge quality of
JPEG compression. But those were not diagnostically significant.
3. Perceivable image quality degradation was found at the 100% of low quality of
JPEG compression. And 8 cases among them were diagnostically significant.
On the basis of the above results, it is considered that the adequate resolution in
scanning radiographs for teleradiology is 3006pi and compression method is the middle
qulity of JPEG compression.

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