Search Results - "Nishihara, Sadamitsu"

Proposal of a new method to prove that unnecessary information is not drawn on the image using statistical analysis by Isayama, Takaaki, Nishihara, Sadamitsu, Otsuka, Hideki

“…The purpose of this study is to propose a new method of image evaluation using statistical analysis. We used the Sign test and the Wilcoxon test to analyze the…”
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Accuracy of computed tomography attenuation measurements for diagnosing anemia by Lan, Hai, Nishihara, Sadamitsu, Nishitani, Hiromu

“…Purpose The purpose of this study was to determine which computed tomography (CT) attenuation parameter was the most appropriate to predict the presence or…”
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Using the MDCT thick slab MinIP method for the follow-up of pulmonary emphysema by Lan, Hai, Nishitani, Hiromu, Nishihara, Sadamitsu, Ueno, Junji, Takao, Shoichiro, Iwamoto, Seiji, Kawanaka, Takashi, Mahmut, Mawlan, Qingge, Si

“…Purpose: The purpose of this study was to evaluate the usefulness of thick slab minimum intensity projection (MinIP) as a follow-up method in patients with…”
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Production of a leaf electroscope having separators and proposal of an experiment using the diagnostic X-ray equipment by Matsuura, Takaaki, Hayashi, Hiroaki, Hanamitsu, Hiroki, Nishihara, Sadamitsu

“…In order to use the practical training for beginners by means of a diagnostic X-ray, a leaf electroscope (which has a function to explain the ionization) was…”
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Development of a counting method for black spots caused by radioactive contamination on the imaging plate by Hayashi, Hiroaki, Nishihara, Sadamitsu, Onuma, Yoji

“…Due to accidents of the nuclear power plants in Fukushima prefecture, a lot of radioisotopes were diffused into the environment. They adhered onto the surface…”
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Postprocessing technique with MDCT data improves the accuracy of the detection of lung nodules by Yoneda, Kazuhide, Ueno, Junji, Nishihara, Sadamitsu, Tsujikawa, Tetsuya, Morita, Naomi, Otsuka, Hideki, Furutani, Kaori, Nishitani, Hiromu, Kondo, Kazuya, Nishioka, Yasuhiko

“…The aim of this study was to determine whether postprocessing techniques could improve the accuracy of detecting lung nodules. A total of 154 segmented lung…”
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Estimation of activities caused by black spots in digital radiography systems: analysis of black spots by the low concentrate radioisotopes adhered directly to the surface of the phosphor plate by Hayashi, Hiroaki, Nishihara, Sadamitsu, Takashi, Satoru, Hanamitsu, Hiroki, Mori, Michiko, Miyoshi, Hirokazu, Onuma, Yoji

“…Because of an accident of the nuclear power plants in the Fukushima, many radioisotopes (RI) have been diffused to the environment. As a result, black spots…”
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10. Summary for basic thinking of image analysis by Nishihara, Sadamitsu

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1. Concept and overview for basic thinking of image analysis by Nishihara, Sadamitsu

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Effective method for decontaminating radioactive X-ray detectors (imaging plates) by Nishihara, Sadamitsu, Hayashi, Hiroaki

“…Several hospitals have been observing black spots in medical images, and the radioisotopes (RIs) that cause the spots needs to be removed from the X-ray…”
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Investigation of the columnar carbon-scatterer length for X-ray spectral measurement on 320-slice computed tomography by Kasai, Yohei, Nishihara, Sadamitsu, Yuasa, Masao, Kanoshige, Toshiya, Matsuura, Takaaki

“…A short length scatterer is adopted to measure the X-ray spectrum of computed tomography (CT) equipment with a wide irradiation field in the body axis…”
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Proposal of a cloud chamber experiment using diagnostic X-ray apparatus and an analysis assisted by a simulation code by Hayashi, Hiroaki, Hanamitsu, Hiroki, Nishihara, Sadamitsu, Ueno, Junji, Miyoshi, Hirokazu

“…A cloud chamber is a radiation detector that can visualize the tracks of charged particles. In this study, we developed a middle-type cloud chamber for use in…”
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Development of a pin-hole camera using a phosphor plate, and visualization of the scattered X-ray distribution and optical image by Hayashi, Hiroaki, Taniuchi, Shou, Kamiya, Naotaka, Nishihara, Sadamitsu, Tominaga, Masahide

“…In order to obtain an image of scattered X-ray in the diagnosis domain, we have newly developed a pin-hole camera. Because of the necessity of the X-ray…”
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An experiment to estimate locations of radioisotopes producing black spots on medical images by Nishihara, Sadamitsu, Hayashi, Hiroaki, Hanamitsu, Hiroki, Mori, Michiko

“…Caused by the accident of nuclear power plants in the Fukushima at 2011, many radioisotopes (RI) were diffused to the environment. As a result, X-ray detectors…”
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Radioisotope decontamination of X-ray detector (photostimulable phosphor plate) by Onuma, Yoji, Hayashi, Michiko, Hayashi, Hiroaki, Nishihara, Sadamitsu

“…We tried to remove contamination of radioisotope (RI) for an X-ray detector (photostimulable phosphor plate; IP) and verified that our procedure suggested by…”
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Fabrication of a visualization equipment for scattered X-rays in the diagnosis domain and proposal of a practical training by Kishida, Mina, Hayashi, Hiroaki, Kuboyabu, Tomomi, Takegami, Kazuki, Inoue, Tadashi, Hanamitsu, Hiroki, Nishihara, Sadamitsu

“…We have built equipment that can visualize the angle distributions of scattered X-rays. The main body of the equipment is made of a lead-shielded box 340 mm…”
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Experimental study of detectability of simulated lung nodule on computed radiography system using various X-ray beam qualities by Fujimoto, Koya, Nishihara, Sadamitsu, Yagi, Hirofumi, Soga, Akira

“…The purpose of this study was to discuss the optimal X-ray beam quality for detection of simulated lung nodule on a computed radiography system. We set up four…”
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Evaluation of osteoporosis in X-ray CT examination: A preliminary study for an automatic recognition algorithm for the central part of a vertebral body using abdominal X-ray CT images by Nishihara, Sadamitsu, Fujita, Hiroshi, Iida, Tadayuki, Takigawa, Atsushi, Hara, Takeshi, Zhou, Xiangrong

“…We have developed an algorithm that can distinguish the central part of the vertebral body from abdominal X-ray CT images to determine whether it is possible…”
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Physical imaging properties of a flat panel X-ray detector system by Yoshida, Akira, Nakamura, Satoru, Nishihara, Sadamitsu, Kohama, Chiyuki, Takahata, Akira, Fujikawa, Kouichi

“…We report the physical imaging properties of a flat panel detector (FPD) designed for radiographic imaging applications (Revolution XQ/i digital chest imaging…”
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Significance of the visual evaluation method using the two-visit method (two-sample preference test suggested by Ferris) by Nishihara, Sadamitsu, Harada, Akiko, Takahashi, Masashi, Koike, Masahiro, Watanabe, Shinji, Kohama, Chiyuki, Sanada, Taizo

“…To increase the accuracy of the visual evaluation method, we studied the significance of the two-sample preference test using the two-visit method, as proposed…”
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