http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Clinical Utility of Mac-2 Binding Protein Glycosylation Isomer in Chronic Liver Diseases
Tamaki Nobuharu,Kurosaki Masayuki,Loomba Rohit,Izumi Namiki 대한진단검사의학회 2021 Annals of Laboratory Medicine Vol.41 No.1
An accurate evaluation of liver fibrosis is clinically important in chronic liver diseases. Mac-2 binding protein glycosylation isomer (M2BPGi) is a novel serum marker for liver fibrosis. In this review, we discuss the role of M2BPGi in diagnosing liver fibrosis in chronic hepatitis B and C, chronic hepatitis C after sustained virologic response (SVR), and nonalcoholic fatty liver disease (NAFLD). M2BPGi predicts not only liver fibrosis but also the hepatocellular carcinoma (HCC) development and prognosis in patients with chronic hepatitis B and C, chronic hepatitis C after SVR, NAFLD, and other chronic liver diseases. M2BPGi can also be used to evaluate liver function and prognosis in patients with cirrhosis. M2BPGi levels vary depending on the etiology and the presence or absence of treatment. Therefore, the threshold of M2BPGi for diagnosing liver fibrosis and predicting HCC development has to be adjusted according to the background and treatment status.
Noise Reduction for Photon Counting Imaging Using Discrete Wavelet Transform
Lee, Jaehoon,Kurosaki, Masayuki,Cho, Myungjin,Lee, Min-Chul The Korea Institute of Information and Commucation 2021 Journal of information and communication convergen Vol.19 No.4
In this paper, we propose an effective noise reduction method for photon counting imaging using a discrete wavelet transform. Conventional 2D photon counting imaging was used to visualize the object under dark conditions using statistical methods, such as the Poisson random process. The photons in the scene were estimated using a statistical method. However, photons which disturb the visualization and decrease the image quality may occur in the background where there is no object. Although median filters are used to reduce the noise, the noise in the scene remains. To remove the noise effectively, our proposed method uses the discrete wavelet transform, which removes the noise in the scene using a specific thresholding method that utilizes photon counting imaging characteristics. We conducted an optical experiment to demonstrate the denoising performance of the proposed method.
( Hiroshi Yotsuyanagi ),( Hiroshi Yatsuhashi ),( Masayuki Kurosaki ),( Richard Zur ),( Steve Sherman ),( Mindie H. Nguyen ),( Sooji Lee ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: CHB affects approximately 1% of the general population in Japan with higher prevalence in older people. This study aims to characterize the evolving CHB patient demographics and comorbidity burden in Japan as well as their changes over 2011- 2016. Methods: We used the Medical Data Vision (MDV) claims database to identify patients =18 years with =1 ICD-10 codes for CHB (B18.1), having =1 HBsAg test and =1 HBeAg test, viral load test, or HB core antibody test. Patients were required to have continuous enrollment for 6 months prior and post index date (first date of CHB diagnosis) during 1/1/2011-12/31/2016. Patient demographic and comorbidity data was reported from 2011 to 2016. Results: A total of 13,639 patients met inclusion and exclusion criteria. Males made up 58% of patients in 2011 and decreased to 54% in 2016 (P<0.0001). The average age of patients was 60.7±13.1 years in 2011 and increased to 63.9±13.2 years in 2016 (P<0.0001). The proportion of the population over 65 increased from 42% in 2011 to 57% in 2016 (P<0.0001). The Charlson comorbidity index, an overall measure of patient comorbidity (covering 17 conditions), increased from 2.7 to 3.7 (P<0.0001) from 2011 to 2016. In 2016, 14% of CHB patients in Japan had diabetes (DM), 16% with nonalcoholic fatty liver disease, 5% with chronic kidney disease (CKD), and 9% with fragility (non-traumatic) bone fractures; all of which have increased significantly from 2011 (all P<0.05) [Figure 1]. Similarly there was a high prevalence of comorbidities in 2016 such as hypertension (38%), renal impairment (20%), hyperlipidemia (19%), liver impairment (15%), and osteoporosis (9%), although these did not show a significant increase over time. Conclusions: Between 2011 and 2016, the Japanese CHB population has aged (~80% =55) and are having more comorbidities, which may affect CHB management and should be considered in their treatment and monitoring.
A Novel Frame Synchronization for MIMO-OFDM Transmission System
Yuhei Nagao,Kenichi Kubo,Masayuki Kurosaki,Hiroshi Ochi 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
MIMO-OFDM system, such as IEEE802.11n wireless LAN and IEEE802.16e wireless MAN, employs cyclic shift diversity transmission in order to avoid unintended beam-forming. However, such system reduces the accuracy of frame synchronization due to large value of channel root mean square (RMS) delay spread, which is observed at receiver. This paper proposes a novel frame synchronization scheme for high accuracy in large RMS delay spread channel environment. The simulation results show that the proposed scheme can improve the performance of the packet error rate and synchronization error rate in IEEE802.11 TGn channel model B with the RMS delay spread of 15[㎱] and model E with RMS delay spread of 100[㎱].