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소아 전산화단층촬영에서 Volume Mode의 유용성 연구
박연, 김상현, Park. Yun, Kim. Sang-Hyun 한국디지털정책학회 디지털융복합연구 7 Pages
한국디지털정책학회 디지털융복합연구 2014, Vol.12 No.10 425-431 (7 pages)
연구는 ATOM Phantom을 이용하여 선량, 화질을 비교 분석 하여 Volume mode의 유용성 밝혀 소아 CT 검사에 적극적으로 사용하기 위함이다. Helical mode Noise와 Volume mode의 Noise, HU, SNR은 p>0.05 이므로 통계적으로 유이한 차이가 없음을 알 수 있었다. 각 부위별 선량값은 모두 p>0.05 이므로 통계적 유이한 차이가 없었으나 DLP값이 Helical mode보다 Volume mode가 더 낮게 측정되었다. 유효선량 역시 Volume mode가 Helical mode 보다 낮음을 알 수 있었다. 정성적 분석에서는 Mode에 따른 조건 별로 각각 Helical: 2.6,... -
Multidetector Helical CT-angiography를 이용한 간동맥의 해부학적 변이의 평가
이동훈, 이준우, 전웅배, 이석홍 대한영상의학회 대한방사선의학회지 8 Pages
대한영상의학회 대한방사선의학회지 2001, Vol.45 No.1 35-42 (8 pages)
목적 multidetector helical CT technology를 이용하여 oblique thick-slab maximal intensity projection(MIP) 기법으로 hepatic angiography를 얻은 후 간동맥의 해부학과 그 변이를 평가해보고자 하였다. 대상과 방법 간 질환을 평가하기 위해 multidetector helical CT technology를 이용하여간 CT를 시행한 70명의 환자를 대상으로 하였다 사용된 CT 기기는 multidetector helical CT였으며 , 비이온성 조영제를 4 cc/sec로 총 120 cc를 전완정맥을 통하여 주입한 후, 간 하연 에서 간 상연가지 초기 동맥기, 후기 동맥기 문맥기의... -
Microglial involvement in the development of olfactory dysfunction
Yoojin Seo, Hyung-Sik Kim, Kyung-Sun Kang 대한수의학회 Journal of Veterinary Science 12 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 3호 1 319-330 (12 pages)
Olfactory impairment is the most common clinical manifestation among the elderly, and its prevalence increases sharply with age. Notably, growing evidence has shown that olfactory dysfunction is the first sign of neurodegeneration, indicating the importance of olfactory assessment an early marker in the diagnosis of neurological disorders. In this review, we describe the nature of olfactory dysfunction and the advantage of using animal models in olfaction study, and we include a brief... -
Assessment of glomerular filtration rate with dynamic computed tomography in normal Beagle dogs
Jinhwa Chang, Sujin Kim, Joohyun Jung, Heechun Lee, Hojung Choi, Dongwoo Chang, Youngwon Lee, Junghee Yoon, Mincheol Choi* 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 4호 13 393-399 (7 pages)
The objective of our study was to determine individual and global glomerular filtration rates (GFRs) using dynamic renal computed tomography (CT) in Beagle dogs. Twenty-four healthy Beagle dogs were included in the experiment. Anesthesia was induced in all dogs by using propofol and isoflurane prior to CT examination. A single slice of the kidney was sequentially scanned after a bolus intravenous injection of contrast material (iohexol, 1 mL/kg, 300 mgI/mL). Time attenuation curves were created... -
Effects of the Endothelium on the Contractile Responses to Norepinephrine in Isolated Proximal and Distal Coronary Artery of Pigs
Kim, Jong-Hoon, Jeon, Byeong-Hwa, Chang, Seok-Jong, Park, Hae-Kun 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1993, 제 27권 제 1호 3 27-36 (10 pages)
in isolated helical strips of the proximal and distal coronaries artery of pigs. The helical strips were immersed in Tris-buffered Tyrode s solution equilibrated with 100% O2 at 35℃ and its isometric tension was measured. NE relaxed the strips precontracted with acetylcholine from both the proximal and distal coronary artery. NE-induced relaxation, which might be induced mainly by β-adrenoceptor function was dominant in the distal coronary arteries. NE-induced relaxation was converted to a... -
Antifungal Effect of Chitosan as Ca2+ Channel Blocker
한국식물병리학회 The Plant Pathology Journal 9 Pages
한국식물병리학회 The Plant Pathology Journal 2016, 32권 3호 8 242-250 (9 pages)
The aim of this study was to investigate antifungal activity of a range of different molecular weight (MW) chitosan against Penicillium italicum. Our results demonstrate that the antifungal activity was dependent both the MW and concentration of the chitosan. Among a series of chitosan derived from the hydrolysis of high MW chitosan, the fractions containing various sizes of chitosan ranging from 3 to 15 glucosamine units named as chitooligomers-F2 (CO-F2) was found to show the highest... -
Optical sensitivity of DNA-dispersed single-walled carbon nanotubes within cement composites under mechanical load
Jin Hee Kim, Inkyu Rhee, Yong Chae Jung, Sumin Ha, Yoong Ahm Kim 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 12 90-96 (7 pages)
We demonstrated the sensitivity of optically active single-walled carbon nanotubes (SWCNTs) with a diameter below 1 nm that were homogeneously dispersed in cement composites under a mechanical load. Deoxyribonucleic acid (DNA) was selected as the dispersing agent to achieve a homogeneous dispersion of SWCNTs in an aqueous solution, and the dispersion state of the SWCNTs were characterized using various optical tools. It was found that the addition of a large amount of DNA prohibited the... -
Superhydrophobic carbon-based materials: a review of synthesis, structure, and applications
Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 16 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 5 89-104 (16 pages)
Materials with appropriate surface roughness and low surface energy can form superhydrophobic surfaces, displaying water contact angles greater than 150°. Superhydrophobic carbon-based materials are particularly interesting due to their exceptional physicochemical properties. This review discusses the various techniques used to produce superhydrophobic carbon-based materials such as carbon fibers, carbon nanotubes, graphene, amorphous carbons, etc. Recent advances in emerging fields such as...
