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°æÁ÷ÀåÃÊÀ½ÆÄ: Àý¸³¼±°èÃøÀÇ ¿ÀÂ÷ Transrectal Ultrasonography : Error of Prostatic Measurement

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Abstract

¼­·Ð
°æÁ÷ÀåÃÊÀ½ÆÄ¿¡ ÀÇÇÑ Àü¸³¼±ÀÇ ¿µ»óÁø´Ü¿¡ ´ëÇÑ °¡Ä¡´Â ³»ºÎ¿¡ÄÚ¿¡ ÀÇÇÑ º´¼Ò°¨º° ÀÌ¿Ü¿¡
µµ Àü¸³¼±ÀÇ ¸ð¾ç°üÂû ¹× üÀû°èÃø¿¡ ÀÇÇÑ Áø´Ü ¹× Ä¡·áÈ¿°úÀÇ ÆÇÁ¤¿¡ À¯¿ëÇÑ °ÍÀ¸·Î ´ëº°
µÉ ¼ö ÀÖ´Ù. Àü¸³¼±ÀÇ Ã¼ÀûÀ» Æò°¡ÇÏ´Â µ¥¿¡ À־ °æÁ÷ÀåÃÊÀ½ÆÄ´Â °ú°ÅÀÇ ¾î´À¹æ¹ý º¸´Ù
µµ ±× ¿ì¼ö¼ºÀÌ ÀÎÁ¤µÇ¾î ÀÖ´Ù. ±×·¯³ª Àü¸³¼±Àº ƯÁ¤ °ø½ÄÀ» Àû¿ë½ÃÅ°±â¿¡´Â ¸ð¾ç ÀÚü°¡
ºÒ±ÔÄ¢ÀûÀÏ »Ó¸¸ ¾Æ´Ï¶ó °³°³Àο¡ µû¸¥ º¯È­ ¶ÇÇÑ ¸Å¿ì ´Ù¾çÇϱ⠶§¹®¿¡ ÃøÁ¤ °á°úÀÇ Á¤È®
¼º¿¡´Â ÇÑ°è°¡ ÀÖ´Ù´Â ³í¶õ ¿ª½Ã ºÎÀÎÇÒ ¼ö ¾ø´Ù.
Àü¸³¼±ÀÇ Ã¼ÀûÀ» ±¸ÇÏ´Â µ¥¿¡´Â ´Ù¾çÇÑ ¹æ¹ýµéÀÌ Á¦½ÃµÇ¾î ÀÖÀ¸¸ç °¢°¢¿¡¼­ Àú¸¶´ÙÀÇ Àå
´ÜÁ¡ÀÌ ÀÖ´Ù. ±× Áß¿¡¼­ Á¤È®¼º°ú Æí¸®¼ºÀ» °¨¾ÈÇÑ ÆíÀ埿øüÀÇ ¿ëÀûÀ» ±¸ÇÏ´Â °ø½Ä
[HWL; height(³ôÀÌ) x width(Æø) x length(±æÀÌ) x ¥ð/6]10ÀÌ °¡Àå ³Î¸® »ç¿ë
µÇ°í ÀÖ´Ù. ±×·¯³ª ÀÌ ¹æ¹ýÀ» »ç¿ëÇÏ´õ¶óµµ Àü¸³¼±ÀÇ ¸ð¾çÀÌ °³Ã¼¿¡ µû¶ó ¼­·Î ´Ù¸£±â ¶§¹®
¿¡ °ø½ÄÀÇ ÀÏ·üÀû Àû¿ë¿¡ ÀÇÇÑ ¿ÀÂ÷(error by shape), ÃøÁ¤ÀÚÀÇ ¹Ýº¹¼º¿¡ ´ëÇÑ ¿ÀÂ÷
(intra-observer error), ±×¸®°í ¼­·Î ´Ù¸¥ °üÂûÀÚ »çÀÌÀÇ ¿ÀÂ÷(inter-observer error)µîÀº ÇÇ
ÇÒ ¼ö ¾øÀ» °ÍÀ¸·Î º¸ÀδÙ. µû¶ó¼­ º» ¿¬±¸´Â ÀÌ·¯ÇÑ ¿äÀε鿡 ÀÇÇÑ ¿ÀÂ÷ÀÇ ¹üÀ§¸¦ ÆľÇÇÏ
¿© °èÃøµÈ Àü¸³¼± üÀûÀ» ÀÓ»óÀûÀ¸·Î Àû¿ëÇÏ´Â µ¥¿¡ À¯ÀÇÇÏ¿©¾ß ÇÒ Á¡À¸·Î ÁöÀûÇÏ°íÀÚ ÇÑ
´Ù.

Purpose : Transrectal ultrasonography is known to be an effective tool for the
determination of prostatic volume. But the irregularity of shape and the limitation of
reliability by intra-observer and inter-observer bias may influence over the results. I
would like to represent several factors for the error of transrectal ultrasonographic
measurement of prostatic volume.
Material and Methods : Errors for transrectal ultrasonographic volume determination of
the prostate, based on the principle of HWL(Height x Width x Length x ¥ð/6) are
presented. Some artificial prostatic models were made and compared between the real
volumes and calculated results. The intra-observer error was determined in 39 cases by
repeated measurements. The inter-observer error was also determined in 32 vases by
repeated measurements of different observer.
Results : There were significant discrepancies between real volumes and calculated
results and the range of error by shape was -19¡­38%. The ranges of intra-observer
and inter-observer errors with 95% confidence interval were -7.4¡­6.1% and 2.7-9.9%.
Conclusions : Errors by several factors should be considered for the clinical application
of measured prostatic volume by ultrasonography irrespective of its statistical validity
and reliability.

Å°¿öµå

Ultrasonography; Prostate;

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