http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
The Use of Transabdominal Ultrasound in Inflammatory Bowel Disease
Hata Jiro,Imamura Hiroshi 대한영상의학회 2022 Korean Journal of Radiology Vol.23 No.3
Transabdominal ultrasound (TAUS) is useful in all aspects of lesion screening, monitoring activity, or treating/diagnosing any related complications of inflammatory bowel disease. Its ability to screen or diagnose complications is almost the same as that of other methods, such as CT or MRI. Moreover, its noninvasiveness makes it a first-line examination method. A TAUS image depicting ulcerative colitis will show large intestinal wall thickening that is continuous from the rectum, which is mainly due to mucosal layer thickening, while for Crohn’s disease, a TAUS image is characterized by a diversity in the areas affected, distribution, and layer structure. Indicators of activity monitoring include wall thickness, wall structure, and vascular tests that use Doppler ultrasound or contrast agents. While all of these have been reported to be useful, at this time, no single parameter has been established as superior to others; therefore, a comprehensive evaluation of these parameters is justified. In addition, evaluating the elasticity of lesions using elastography is particularly useful for distinguishing between fibrous and inflammatory stenoses. However, the lack of objectivity is the biggest drawback of using ultrasound. Standardizing and popularizing the ultrasound process will be necessary, including scanning methods, equipment settings, and image analysis.
Dynamic Chest X-Ray Using a Flat-Panel Detector System: Technique and Applications
Hata Akinori,Yamada Yoshitake,Tanaka Rie,Nishino Mizuki,Hida Tomoyuki,Hino Takuya,Ueyama Masako,Yanagawa Masahiro,Kamitani Takeshi,Kurosaki Atsuko,Sanada Shigeru,Jinzaki Masahiro,Ishigami Kousei,Tomiy 대한영상의학회 2021 Korean Journal of Radiology Vol.22 No.4
Dynamic X-ray (DXR) is a functional imaging technique that uses sequential images obtained by a flat-panel detector (FPD). This article aims to describe the mechanism of DXR and the analysis methods used as well as review the clinical evidence for its use. DXR analyzes dynamic changes on the basis of X-ray translucency and can be used for analysis of diaphragmatic kinetics, ventilation, and lung perfusion. It offers many advantages such as a high temporal resolution and flexibility in body positioning. Many clinical studies have reported the feasibility of DXR and its characteristic findings in pulmonary diseases. DXR may serve as an alternative to pulmonary function tests in patients requiring contact inhibition, including patients with suspected or confirmed coronavirus disease 2019 or other infectious diseases. Thus, DXR has a great potential to play an important role in the clinical setting. Further investigations are needed to utilize DXR more effectively and to establish it as a valuable diagnostic tool.
Hata, Satoshi,Nagai, Naoyuki,Yasui, Toyoaki,Tsukamoto, Hiroshi Korean Society for Fluid machinery 2008 International journal of fluid machinery and syste Vol.1 No.1
For mechanical drive steam turbines, the investigation results of corrosion fatigue phenomena in the transient zone are introduced, including basic phenomena on expansion line and actual design and damage experience. These results were analyzed from the standpoint of stress intensity during the start of cracking. In order to resolve such problems, preventive coating and blade design methods against fouling and corrosive environments are developed. Detailed evaluation test results are given for coating performance using a unique test procedure simulating fouling phenomena and washing conditions. Finally, the results of the successful modification of internals and on-line washing results on site are introduced.
Development of the Portable Two-Wheeled Inverted Pendulum Type Personal Vehicle
Hiroki Hata,Takashi Takimoto 제어로봇시스템학회 2014 제어로봇시스템학회 국제학술대회 논문집 Vol.2014 No.10
Some inverted pendulum type personal mobility devices, including the Segway have already been invented. However, they cannot go over the obstacles such as stairs or curbs on the road. In order to resolve this problem, we have developed a portable personal vehicle. It looks like a skateboard or snowboard. It is light and small enough to carry in comparison with others. It is maneuvered by detecting the vehicle’s angle with the accelerometer and the gyroscope. When an operator applies the body weight onto a front foot plate, the vehicle leans to the front and its angle is detected, then the vehicle goes forward. Although some of the same type of vehicles have already been developed, the different point of our development vehicle is that it has two wheels on one axle. It makes our vehicle possible to spin in place or to turn tightly. Additionally, because it doesn’t have a handlebar, we can drive it without hands.
( Toshihiko Hata ),( Hiroyuki Sato ),( Ako Machino ),( Mai Wakabayashi ),( Morito Kise ),( Hiroki Ohashi ),( Daisuke Yamashita ),( Kaoru Sakural ),( Toru Matsubayashi ),( Masahiko Hatao ),( Ken Ueda ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
31yrs. old female known to have hypertension and dyslipidemia for 1 yr.presented with h/o weight loss around 10 kg for 1 yr,palpiations,diaphoresis and hypertensive urgencyBp 210/110 mmhg)and also found to have diabetes (newly diagnosed)further investigations shows large adrenal mass (left side)suspicion of phaechromocytoma and urine catecholamoines was high, urology was consulted and she underwent left adrenalectomy and biopsy confi rm the diagnosis of malignant phaechromcytoma. Repeat Urine catecholamines which was quite high on presentation later normalized after surgey. Now she is under active follow up with endocrinologist and on antihypertensive medications very minimal doses and for her diabetes she is not on any medications as well after surgery.
( Toshihiko Hata ),( Ken Ueda ),( Hiroshi Maruyama ),( Toshiki Takaya ),( Hiroshi Kuraishi ),( Kenji Maeda ),( Hiroki Tomita ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: In super acute phase after the Great East Japan Earthquake (11 March 2011), Disaster medical association team (DMAT) consisted of emergency physicians acted in disaster areas in the East Coast of Japan. On the other hand, these areas needed chronic care support by general physicians because of the enormous destructions of the medical facilities by the tsunami. So then, the Japanese Red Cross Society had sent disaster emergency outpatient assistance doctors to Isinomaki Red Cross Hospital, was intact because it was moved away from the Pacifi c Ocean three years ago. Methods: Determination of specialism by direct hearing and information from home page of each Red Cross Hospitals. Results: Cumulative 81 medical doctors were 38 internal medicine physicians, trainees 15, emergency physicians 12, surgeon 6, pediatrician 3, orthopedic surgeon 3, anesthesiologist 2, obstetrician 2, from April to August 2011. At fi rst 6 dispatched doctors were resident and did emergency outpatient work in Ishinomaki Red Cross Hospital for 6 days and dipatched. A lot of Cases of pneumonia and bronchial asthma due to debris and rubble by Tsunami were seen. All dispatch doctors corresponded to primary surgery including fractures and trauma, pediatric diseases, and posttraumatic stress disorder due to earthquake itself, tsunami damage, and radiation problem of Fukushima. Conclusions: The role of general physicians is very important in chronic phase of disaster medical assistance. Medical facilities in the area with many earthquakes should be moved apart from the sea in order to avoid the damage of tsunami.
Fuzzy Logic in Trans-Skull Ultrasonic Imaging System
Yutaka Hata,Syoji Kobashi,Toshio Yanagida 한국지능시스템학회 2010 한국지능시스템학회 학술발표 논문집 Vol.20 No.2
This paper describes a fuzzy logic approach to image a brain surface and skull from arbitrary places. This paper first describes a trans-skull sonography system that can visualize the shape of the skull and brain surface from any point to examine skull fracture and some brain diseases. We employ fuzzy signal processing to determine the skull and brain surface. Two human subjects’ foreheads are applied in our system. The all shapes of the skin surface, skull surface, skull bottom, and brain tissue surface are successfully determined. Second, we consider a ultrasonic refraction of the skull to image brain sulcus. We do an experiment by using a cow scapula to imitate the skull bone and a biological phantom to imitate the cerebral sulcus. We calculate the refractive angle of ultrasonic wave and visualize the image considering the refraction of ultrasonic wave. In the result of applying our method, we can estimate the thickness of scapula at all points, and successfully visualize the phantom surface image.