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삼배체 염색체 이상을 보인 급성 림프구성 백혈병 1 예
이은희,김영중,차주영,이경인,박병익,김윤권,조민구,김소연,이권전,오형모,전종구,신요식 대한내과학회 2001 대한내과학회지 Vol.61 No.2
$quot;In addition to age, white cell count and immunophenotype, karyotype has been reported to be one of the important prognostic factors in acute lymphocytic leukemias. Furthermore 70 percent of patients with acute B lymphocytic leukemia presented chromosomal abnormalities, which is known to have a close relationship with the prognosis. Among the abnormalities, triploid is rare and known to have the worse prognosis. Structural chromosomal abnormality of the 11q23 band is more common in childhood acute lymphocytic leukemia and has been rarely reported in adult lymphocytic leukemia. We present a case of a 29 year - old male patient with acute lymphocytic leukemia, who had triploid and chromosomal translocation including 11q23 band along with the review of related literature.(Korean J Med 61:190-194, 2001)$quot;
Vacuum Packaging Technology of AC-PDP using Direct-Joint Method
Lee, Duck-Jung,Lee, Yun-Hi,Moon, Gwon-Jin,Kim, Jun-Dong,Choi, Won-Do,Lee, Sang-Geun,Jang, Jin,Ju, Byeong-Kwon The Korean Infomation Display Society 2001 Journal of information display Vol.2 No.4
We suggested new PDP packaging technology using the direct joint method, which does not need an exhausting hole and tube. The advantages of this method are simple process, short process time and time panel package. To packaging, we drew the seal line of glass frit by dispenser followed by forming the lump, which provide pumping-out path during the packaging process. And, we have performed a pretreatment of glass frit to reduce the out-gases. After which, both front and rear glass plates were aligned and loaded into vacuum packaging chamber. The 4-inch monochrome AC-PDP was successfully packaged and fully emitted with brightness of 1000 $cd/m^2$. Also, glass frit properties for pretreatment condition was investigated by AES and SEM analyses.
X-care를 적용한 Chest CT검사에서 IRIS를 이용한 흡수선량 감소에 대한 연구
이준협(Jun Hyeop Lee),남진현(Jin Hyeon Nam),이윤상(Yun Sang Lee),최기권(Gee Gwon Choi),편도현(Do Hyeon Pyeon),조평곤(Pyong Kon Cho) 대한CT영상기술학회 2012 대한CT영상기술학회지 Vol.14 No.2
목적 Chest CT검사 시 120kVp, Quality ref. mAs 110과 AEC를 적용하여 스캔 후 FBP 기법으로 재구성하던 기존 방법에서 IRIS 기법으로 재구성하여 어느 정도까지 기존과 같은 화질을 유지하며 선량을 낮출 수 있는지가 목적이었다. 또한 새로운 Protocol을 적용하여 검사 시 유효선량 감소효과에 대해서 알아보고자 하였다. 대상 및 방법 영상 평가로서는 기존의 방법인 AEC를 적용한 후 FBP 기법으로 재구성한 영상과 Quality fef. mAs 110과 AEC를 적용한 평균선량의 각각 30% 감소하여 검사한 영상(Quality ref. mAs 77), 40% 감소하여 검사한 영상(Quality ref. mAs 66), 50% 감소하여 검사한 영상(Quality ref. mAs 55)에 대하여 Phantom과 공기로 팽창하고 고정한 돼지의 폐를 대상으로 noise값과 SNR을 측정하여 영상의 질을 비교하였다. 선량 평가로서는 Phantom에 유리 선량계를 삽입하여 각 검사에서 갑상선, 유방, 폐의 평균 Organ dose와 CTDIvol, DLP, 유효선량을 비교하였다. 통계분석을 위해 SPSS version 12.0을 이용하였고, 통계 분석 방법으로는 대응표본 t 검정으로 하였으며, 유의수준은 유의확률 0.05 이하(p< 0.05)로 하였다. 결과 Breast의 SNR경우 A군과 B군(p=0.451), A군과 C군(p=0.436), A군과 D군(p=0.082), A군과 E군(p=0.145), A군과 F군(p=0.481) 사이에서 모두 유의한 차이가 없었다. Lung의 SNR경우 A군과 B군 (p=0.407), A군과 C군(p=0.362), A군과 D군(p=0.615), A군과 E군(p=0.985), A군과 F군(p=0.879) 사이에서 모두 유의한 차이가 없었다. Phantom 선량 평가 결과 유효선량은 A군에 비하여 D군은 25%, E군은 35%, F군은 48% 감소하였다. 결론 본 연구에서 X-CARE 적용은 영상 화질에 있어 영향을 거의 주지 않으며, 유방의 선량은 약 24% 감소시킬 수 있다. FBP 기법으로 재구성하던 기존의 방법에서 선량을 감소하여 IRIS 기법으로 재구성할 시 20~30%의 선량 감소로 기존 영상의 질을 유지할 것으로 나타났다. 또한 FBP 기법으로 재구정한 영상과 저 선량으로 검사 후 IRIS 기법으로 재구성한 영상의 noise와 SNR의 상관관계가 유의하지 않은 것으로 미루어보아 저 선량 검사 후 IRIS 기법의 적용은 유용한 검사 방법임을 확인할 수 있었다. I. Purpose The target was how to reduce the projection amount to the extent as well as keeping the same quality of current screen by reconstructing with IRIS technique from the conventional method of reconstructing with FBP technique after scanning with adaptation of the 120 kVp, 110 Quality ref. mAs and ABC in chest CT examination. In addition, the effective dose reduction effect was surveyed with adaptation of new protocol in examination. II. Meterial and Methods With regards to the radiological evaluation, the reconstructed image with FBP technique with ABC adaptation which is the conventional method, image examined by 30% reduction of the average projection dose with adaptation of 110 Quality ref. mAs and ABC, image examined by 40% reduction (66 Quality ref. mAs) and image examined by 5000 reduction (55 Quality ref. mAs) on the pig’s lung which were expanded and fixed with phantom and air, were compared in their image quality by measuring the noise data and SNR. As an evaluation for projection dose, the radiophotoluminescent glass dosimeter was inserted into the phantom and the CTDIvol, DLP and effective dose were compared with average organ dose in the thyroid gland, breast and lung in each examination. SPSS version 12.0 was used for statistical analysis and paired t-test was made for method of statistical analysis and the significant level was put under 0.05% of significant probability(p < 0.05). III. Result In case of breast SNR, there were no signifiant differences in A and B group (p=0.451), A and C group (p=0.436), A and D group (p=0.082), A and E group (p=0.145), A and F group (p=0.481). In case of lung SNR, there were no signifiant differences in A and B group (p=0.407), A and C group (p=0.362), A and D group (p=0.615), A and E group (p=0.985), A and F group (p=0.879). The evaluation on the phantom projection dose revealed that the effective dose was reduced by 25%, 35% and 48% in D, E and F group respectively. IV. Conclusions The adaptation of X-CARE in this study does not make little influence on the was shown that the quality of the current image can be maintained with 20~30% of projection dose reduction in case of reconstruction with IRIS technique by reducing the projection dose from the conventional method of reconstructing the FBP technique. In addition, it was shown that the adaptation of IRIS technique was an effective inspection method after examination with low projection dose from the fact that the correlation with noise and SNR on the reconstructed images with FBP technique and IRIS technique is not significant.