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Katsuyoshi Matsuoka,Tomoyuki Inoue,Hiroaki Tsuchiya,Katsumasa Nagano,Toshiyuki Iwahori 대한장연구학회 2024 Intestinal Research Vol.22 No.3
Background/Aims: A previous study demonstrated that half of patients started oral corticosteroids (OCS) for ulcerative colitis (UC) exacerbations at lower doses than recommended by Japanese treatment guidelines (initial OCS prednisolone equivalent dose, 30–40 mg). This may relate to physician’s concern about infection, especially pneumonia including Pneumocystis jirovecii pneumonia (PJP), from high OCS doses. We assessed whether pneumonia incidence is increased with guideline-recommended OCS initial doses. Methods: This retrospective cohort study used the Japan Medical Data Center claims database (2012–2021). The whole cohort consisted of all UC patients who started OCS during the study period meeting the inclusion and exclusion criteria. The matched cohort was created by propensity score matching; the lower (initial OCS dose < 30 mg), guideline-recommended (30–40 mg), and higher groups ( > 40 mg) in a 2:2:1 ratio. Pneumonia incidence in the primary analysis was evaluated in the matched cohort. A Poisson regression model determined pneumonia-related risk factors in the whole cohort. Results: After screening, 3,349 patients comprised the whole cohort; 1,775 patients comprised the matched cohort (lower dose, n = 710; guideline-recommended dose, n = 710; higher dose, n = 355). The incidence of any pneumonia was low; no differences were observed in incidence rates across these dose subgroups. In total, 3 PJP cases were found in the whole cohort, but not detected in the matched cohort. Several risk factors for any pneumonia were identified, including age, higher comorbidities index, treatment in large facility and hospitalization. Conclusions: The incidence of pneumonia, including PJP, in UC patients was low across initial OCS dose treatment subgroups.
Fracture imaging using Image Point transform and midpoint imaging of RVSP data
이창현,박권규,Toshiyuki Matsuoka,Toshifumi Matsuoka 한국지질과학협의회 2010 Geosciences Journal Vol.14 No.4
An Image Point (IP) transform integrates along a hyperbolic path and converts data to a point in the IP domain so that the reflection events are accumulated to the image point for given sources in the IP domain. In addition, the image point by definition is uniquely determined and the midpoints between sources and the image points always lie on the reflector surface. Exploiting these two facts, the image point transform technique for Vertical Seismic Profile (VSP) to reverse VSP (RVSP) data is expanded to suggest a new method called the midpoint imaging method for imaging reflectors such as fractures. Applying the transform with synthetic data for Two-dimensional (2-D) models with single reflector and two reflectors, we confirm and demonstrate that the reflection events are clearly identifiable in the IP domain. The midpoint imaging method can successfully image the reflector surfaces and the dip information even with only two shot records in a simple case.
( Shunsuke Komoto ),( Satoshi Motoya ),( Yuji Nishiwaki ),( Toshiyuki Matsui ),( Reiko Kunisaki ),( Katsuyoshi Matsuoka ),( Naoki Yoshimura ),( Takashi Kagaya ),( Makoto Naganuma ),( Nobuyuki Hida ),( 대한장연구학회 2016 Intestinal Research Vol.14 No.2
Background/Aims: Anti-tumor necrosis factor drugs (anti-TNF) and thiopurines are important treatment options in patients with inflammatory bowel disease (IBD), including during pregnancy. However, there are limited data on the benefit/risk profile of anti-TNF and thiopurines during pregnancy in Asia. The aim of this study was to analyze pregnancy outcomes of female Japanese IBD patients treated with anti-TNF and/or thiopurines. Methods: This cross-sectional study assessed pregnancy outcomes in 72 women with IBD. Pregnancy outcomes were compared among 31 pregnancies without exposure to infliximab (IFX), adalimumab (ADA), or thiopurines; 24 pregnancies with exposure to anti-TNF treatment (23 IFX, 1 ADA); 7 pregnancies with exposure to thiopurines alone; and 10 pregnancies with exposure to both IFX and thiopurines. Results: Thirty-five of the 41 pregnancies (85.3%) that were exposed to anti-TNF treatment and/or thiopurines resulted in live births after a median gestational period of 38 weeks. Of the 35 live births, 3 involved premature deliveries; 7, low birth weight; and 1, a congenital abnormality. There were 6 spontaneous abortions in pregnancies that were exposed to anti-TNF treatment (17.7%). Pregnancy outcomes among the 4 groups were similar, except for the rate of spontaneous abortions (P =0.037). Conclusions: Exposure to anti-TNF treatment or thiopurines during pregnancy was not related to a higher incidence of adverse pregnancy outcomes in Japanese IBD patients except for spontaneous abortion. (Intest Res 2016;14:139-145)
Takuya OHYAMA,Hiromitsu SAEGUSA,Ryuji TAKEUCHI,Shinji TAKEUCHI,Toshiyuki MATSUOKA 한국암반공학회 2009 한국암반공학회 학술대회 및 세미나 자료집 Vol.2009 No.10
In the Phase II investigations, the long-term hydraulic monitorings, such as groundwater pressure monitoring, tiltmeter measurements and analyses and self potential monitoring, were carried out to characterize hydrogeological structure in the hydraulically disturbed condition due to the MIU construction. The investigation results indicate the faults in/around the MIU construction site have a low or anisotropic conductivity (normal direction to fault plane: low conductivity, in-plane direction to fault plane: high conductivity). The geological mapping of the shafts and galleries revealed that a fault with altered granite was intersected by the Main shaft12). This result is consistent with the results of the characterization of hydrogeological structure using the hydraulic monitoring. It was also characterized that horizontal layer or layers in the sedimentary cover act as flow barriers as well as the faults. There is also the rock volume that is bounded by and hydrogeologically isolated by these hydraulic structures. The result of the groundwater flow analysis using the revised model based on the above investigation results indicates that the head distribution and inflow rate are significantly influenced by the hydrogeological structures modelling. Therefore it is very important to construct appropriate geological and hydrogeological models based on the investigation results. It is also important for site characterization to combine the field investigations and simulations.