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자기공명담췌관조영술: 단발포고속스핀에코(SS-TSE)기법과 SENSE기술을 이용한 3차원고속스핀에코(3D-TSE)기법의 영상비교
최철순,윤대영,서영란,Choe, Cheol-Sun,Yun, Dae-Yeong,Seo, Yeong-Ran 대한영상의학회 2003 대한영상의학회지 Vol.49 No.6
목적:단발포고속스핀에코기법과 Sensitivity encoding(이하 SENSE)기술을 이용한 3차원고속 스핀에코기법의 자기공명담췌관조영술 (Magnetic Resonance Cholangiopancre-atography;이하 MRCP)을 비교하여 영상의 질을 평가하고자 하였다. 대상과 방법:간내 또는 간외질환으로 단발포고속스핀에코기법과 SENSE기술을 이용한 3차원 고속스핀에코기법의 MRCP를 시행한 40명을 대상으로 하였다.3인의 방사선과 의사가 담췌관계해부학구조물의 영상의 질을 점수화하여 비교,분석하였고,이어서 각 증례별로 두 기법간의 영상의 질을 직접 비교,분석하였다. 결과:간내담관,담낭관,총담관,췌관의 영상에서 모두 3차원고속스핀에코기법이 단발포고속스핀에코기법보다 높은 점수를 보였으나,간내담관과 총담관에 대한 3차원고속스핀에코기법의 우월성만이 통계적으로 유의한 차이를 보였다 (p<0.05).두 기법 모두에서 총담관이 각각 87.5%와 97.5%로 가장 잘 관찰되었으며,췌관의 경우 52.5-57.5%,담낭관의 경우 10.0-32.5%에서 양질의 영상을 얻을 수 있었다.각 증례별로 두 영상 방식을 직접 비교하였을 때 27예 (67.5%)에서는 3차원고속스핀에코기법이 우수하고,5예(12.5%)에서는 두 영상방식이 동등하 며 8예(20%)에서 단발포고속스핀에코기법이 우수하다고 판단하였으며 이는 통계적으로 유의 하였다 (p<0.05). 결론:담췌관계해부학구조물을 관찰하는데 있어 3차원고속스핀에코기법이 단발포고속스핀에코기법보다 양질의 정보를 제공하였다.그러나 두 기법모두에서 췌관과 담낭관을 보는 데에 제한이 있었지만 이점은 MR기기의 기술적 개선으로 더 나은 영상을 얻을 수 있을 것으로 생각한다. Purpose: To evaluate the relative image qualities obtained at magnetic resonance cholangiopancreatography (MRCP) turbo spin-echo (SSTSE) sequence and the three-dimensional turbo spin-echo (3D TSE) sequence with the sensitivity encoding (SENSE) technique. Materials and Methods: Forty patients with suspected hepatic and extrahepatic diseases underwent MRCP using the SSTSE sequence and the 3D TSE sequence with the SENSE technique. Three radiologists scored and compared the quality of images of anatomic structures in the hepatopancreatic biliary system, and then directly compared the quality of the images obtained using the two sequences in each set of cases. Results: For visualization of the intrahepatic bile duct, the cystic duct, the common bile duct, and the pancreatic duct, MRCP images obtained using the 3D TSE sequence with the SENSE technique were better than those obtained using the SSTSE sequence, though for the intrahepatic bile duct and common bile duct only, were these differences statistically significant (p<0.05). Quality was best for images of the common bile duct (87.5% for SSTSE and 97.5 % for 3D TSE with the SENSE technique). For the pancreatic and cystic duct, however, 52.5% and 10% of SSTSE images, respectively, and 57.5% and 32.5% of 3D TSE images, respectively, provided optimal image quality. In direct comparison, 3D TSE images obtained using the SENSE technique were better in 27 cases (67.5%), both images were equivocal in five cases (12.5%), and SSTSE images were better in eight cases (20%). These differences were statistically significant (p<0.05). Conclusion: For the visualization of anatomic structures in the hepatopancreatic biliary system, the 3D TSE sequence with the SENSE technique was better than the SSTSE sequence. For evaluation of the pancreatic and cystic duct, however, both techniques have their limitations and require further development
Harmonic ultrasonography for the detection of microlithiasis in the gallbladder
최철순,구유진,윤대영,윤은주,서영란,임경자,백소라,배상훈,남은숙 대한초음파의학회 2014 ULTRASONOGRAPHY Vol.33 No.4
Purpose: To validate the use of harmonic ultrasonography (US) in the detection of gallbladdermicrolithiasis. Methods: From November 30, 2012, to January 18, 2014, fundamental US (FUS) and harmonicUS with a high background noise (HUS-N) were performed for evaluation of gallbladder duringthe routine abdomen US. During the US, a dot-like stone (or stones) with Brownian motionwas regarded as a positive finding of microlithiasis. Fifty-five patients with microlithiasis in thegallbladder detected on US were enrolled as the subjects of a retrospective review. With respectto the obtained images, two abdominal radiologists independently scored the conspicuity ofgallbladder microlithiasis on FUS and HUS-N by using a 4-grade scale. The statistical analysisemployed a kappa test and a Wilcoxon rank-sum test. Results: For FUS, the conspicuity grades of gallbladder microlithiasis were G1 in 25 and 37, G2in 21 and 9, G3 in 6 and 6, G4 in 3 and 3 patients, while HUS-N showed G1 in 0 and 0, G2in 3 and 2, G3 in 12 and 15, and G4 in 40 and 38 patients, respectively, by each of the tworadiologists. The kappa value was 0.633 for FUS between the two radiologists and 0.708 forHUS-N. HUS-N showed better conspicuity of gallbladder microlithiasis than FUS with significantP-values of less than 0.001 and 0.001 for the two radiologists, respectively. Conclusion: Compared with FUS, HUS-N enables better detection of microlithiasis in thegallbladder.
Weight training과 Circuit weight training이 혈중젖산 농도에 미치는 영향
최철순 광운대학교 기초과학연구소 2003 기초과학연구소논문집 Vol.32 No.-
The purpose of this study was to investigate the effects of Weight training(WT) and Circuit weight training(CWT). 16 physical education students of K university were selected as subjects and then divided into two groups; The weight training group with 8 students, the circuit weight training group with 8 students to evaluate the change of cardiovascular function and blood lactate were comparison and analysis. Weight training program was selected at 75% of 1RM during ninety minutes per day of three times a week for the period of 6 weeks, Circuit weight training program was selected at 50% of 1RM during 3 sets per day at three times a week for the period of 6 weeks. The following results were obtained from this study. The Change of Blood Lactate in Training Period. Non-significant change was in the blood lactate with all-out time, but significant change was decreased with recovery 20 minutes in both groups.