유방촬영에서의 ACR 유방 팬텀을 통한 SAEC 모드의 유용성 연구
Usefulness of SAEC Mode Using the ACR Breast Phantom in Mammography
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초록
The purpose was to evaluate overall performance according to automatic exposure control(AEC) and semi AEC (SAEC) mode in mammography. The mammography images using the AmericanCollege of Radiology (ACR) phantom were acquired at the 27 kVp AEC mode, and 27, 28, 29 kVp SAECmode, respectively. The similarity analysis such as peak signal to noise ratio (PSNR) was performedbetween reference image as 27 kVp AEC mode and comparison image as 27, 28, 29 kVp SAEC mode. Thecontrast to noise ratio (CNR) was used drawn by region of interest to acquired images. In addition, theradiation dose rate was implemented at the front, right, and left side from ACR phantom. According tothe similarity analysis, there was no significant difference between the images with AEC and SAEC mode. Besides, the images SAEC mode for CNR was superior 1.1 times than AEC mode. According to radiationdose rate for SAEC mode was decreased 1.2 times compared with AEC mode. We confirmed that theSAEC mode was useful when scanning the mammography.
Abstract
The purpose was to evaluate overall performance according to automatic exposure control(AEC) and semi AEC (SAEC) mode in mammography. The mammography images using the AmericanCollege of Radiology (ACR) phantom were acquired at the 27 kVp AEC mode, and 27, 28, 29 kVp SAECmode, respectively. The similarity analysis such as peak signal to noise ratio (PSNR) was performedbetween reference image as 27 kVp AEC mode and comparison image as 27, 28, 29 kVp SAEC mode. Thecontrast to noise ratio (CNR) was used drawn by region of interest to acquired images. In addition, theradiation dose rate was implemented at the front, right, and left side from ACR phantom. According tothe similarity analysis, there was no significant difference between the images with AEC and SAEC mode. Besides, the images SAEC mode for CNR was superior 1.1 times than AEC mode. According to radiationdose rate for SAEC mode was decreased 1.2 times compared with AEC mode. We confirmed that theSAEC mode was useful when scanning the mammography.
참고문헌 (21)
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