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Breast PET CT ¿µ»ó À籸¼º º¯È­¿¡ µû¸¥ ´ëÁ¶µµ ´ë ÀâÀ½ºñ¿Í ½ÅÈ£ ´ë ÀâÀ½ºñÀÇ ºñ±³Æò°¡

Evaluation and Comparison of Contrast to Noise Ratio and Signal to Noise Ratio According to Change of Reconstruction on Breast PET/CT

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ÀÌÀ翵 ( Lee Jae-Young ) - ¼­¿ï´ëÇб³º´¿ø ÇÙÀÇÇаú

ÀÌÀ»±Ô ( Lee Eul-Kyu ) - ÀÎÁ¦´ëÇб³ ¼­¿ï¹éº´¿ø ¿µ»óÀÇÇаú
±è±â¿ø ( Kim Ki-Won ) - °­µ¿°æÈñ´ëÇб³º´¿ø ¿µ»óÀÇÇаú
Á¤È¸¿ø ( Jeong Hoi-Woun ) - ¹é¼®¹®È­´ëÇб³ ¹æ»ç¼±°ú
À¯±¤¿­ ( Lyu Kwang-Yeul ) - ½Å±¸´ëÇб³ ¹æ»ç¼±°ú
¹ÚÈÆÈñ ( Park Hoon-Hee ) - ½Å±¸´ëÇб³ ¹æ»ç¼±°ú
¼ÕÁøÇö ( Son Jin-Hyun ) - ½Å±¸´ëÇб³ ¹æ»ç¼±°ú
¹ÎÁ¤È¯ ( Min Jung-Whan ) - ½Å±¸´ëÇб³ ¹æ»ç¼±°ú

Abstract

º» ¿¬±¸´Â ¾çÀüÀÚ ÄÄÇ»ÅÍ´ÜÃþÃÔ¿µ(Positron Emission Computed Tomography; PET-CT) À¯¹æ¾Ï ¿µ»ó¿¡¼­ Áúȯ°ü½É¿µ¿ª(Region of Interest; ROI)ÀÇ ´ëÁ¶µµ ´ë ÀâÀ½ºñ(Contrast to Noise Ratio; CNR)¿Í ½ÅÈ£ ´ë ÀâÀ½ºñ(Signal to Noise Ratio; SNR)¸¦ À籸¼º ±â¹ýº°·Î ÃøÁ¤ Æò°¡ÇÏ¿© Åë°èÀû ºÐ¼®À» ÇϰíÀÚ ÇÏ¿´´Ù. ¿¬±¸´ë»óÀº ¼­¿ï¼ÒÀç ´ëÇк´¿ø¿¡¼­ À¯¹æ ¾çÀüÀÚ ÄÄÇ»ÅÍ´ÜÃþÃÔ¿µ(Breast PET-CT)À» °Ë»çÇÑ È¯ÀÚ 100¸íÀÌ´Ù. ÃøÁ¤¹æ¹ýÀº ImageJ ÇÁ·Î±×·¥À» »ç¿ëÇÏ¿© Ç¥º»ÀÇ Àα¸»çȸÇÐÀû Ư¼º, ¿µ»ó À籸¼º ±â¹ýº° À¯¹æ¾ÏÀÇ SNR°ú CNRÀÇ Æò±Õ°ª, 95% ½Å·Ú±¸°£ °ª, SNR°ú CNRÀÇ Æò±ÕÂ÷ÀÌ °ª µîÀ» ºÐ¼®ÇÏ¿´´Ù. SPSS Statistics21 Åë°èÇÁ·Î±×·¥À¸·Î ANOVA ºÐ¼®À» ÇÏ¿´À¸¸ç p<0.05¿¡¼­ À¯ÀÇÇÑ °ÍÀ¸·Î ÆÇ´ÜÇÏ¿´´Ù. ¿µ»ó À籸¼º ±â¹ýº° ºÐ¼®°á°ú´Â CNR°ú SNR ¸ðµÎ TrueX_TOF, Iterative, Iterative-TOF, FBP-TOF ¼øÀ¸·Î ³ôÀº °ªÀ» ³ªÅ¸³Â´Ù(p<0.05). CNR°ú SNR¼öÄ¡·Î ¿µ»ó À籸¼º ±â¹ýÀÇ Æ¯Â¡À» Á¶ÇÕÇÏ¿© PET/CT °Ë»çÀÇ Á¤È®¼º°ú ÆíÀǼºÀ» Á¦°øÇÒ °ÍÀ̶ó »ç·áµÈ´Ù.
The purpose of this study was to measure contrast to noise ratio (CNR) and signal to noise ratio (SNR) according to change of reconstruction from region of interest (ROI) in breast positron emission tomography-computed tomography (PET-CT), and to analyze the CNR and SNR statically. We examined images of breast PET-CT of 100 patients in a University-affiliated hospital, Seoul, Korea. Each patient's image of breast PET-CT were calculated by using ImageJ. Differences of CNR and SNR among four reconstruction algorithms were tested by SPSS Statistics21 ANOVA test for there was statistical significance (p<0.05). We have analysis socio-demographical variables, CNR and SNR according to reconstruction images, 95% confidence according to CNR and SNR of reconstruction and difference in a mean of CNR and SNR. SNR results, with the quality of distributions in the order of PSF_TOF, Iterative and Iterative-TOF, FBP-TOF. CNR, with the quality of distributions in the order of PSF_TOF, Iterative and Iterative-TOF, FBP-TOF. CNR and SNR of PET-CT reconstruction methods of the breast would be useful to evaluate breast diseases.

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À¯¹æ ; ¾çÀüÀÚ ÄÄÇ»ÅÍ´ÜÃþÃÔ¿µ ; ´ëÁ¶µµ ´ë ÀâÀ½ºñ ; ½ÅÈ£ ´ë ÀâÀ½ºñ
Breast ; Positron emission tomography-computed tomography ; Contrast to noise ratio ; Signal to noise ratio
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