巻号一覧
15 巻 (1998)
- 3 号 p. 124-
- 2 号 p. 68-
- 1 号 p. 2-
15 巻, 3 号
選択された号の論文の6件中1～6を表示しています
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大庭 健1998 年 15 巻 3 号 p. 124-134
発行日: 1998/10/08
公開日: 2012/08/27
ジャーナル フリーThe orthopantomograph, an apparatus for panoramic radiography of the jaws, was introduced by Paatero in 1954. It has been widely used, not only in dentistry but also in otorhinolaryngology, for the radiological diagnosis of jaw lesions. Many investigations have been reported its usefulness for the radiological examination of jaw lesions.
The present report concerns the significance of the panoramic radiography in the diagnosis of jaw lesions. Panoramic radiographs obtained from the clinical cases were reviewed in this report. The value of the panoramic radiography in dental mass surveys, using a prototype panoramic x - ray machine the PTM 2001 modified for photofluorography, is also introduced.
In 1995, the Japanese Ministry of Health Welfare began to examine the feasibility of periodontal disease examinations as a routine check up for the elderly. The PTM 2001 offered good possibilities with regard to periodontal examination of the elderly because of its low- radiation, short time needed, and low cost.
This new panoramic radiography might be used for mass surveys or mass screenings of抄録全体を表示PDF形式でダウンロード (8502K) -
THE DlGlTAL HOLOGRAPHYTM SYSTEMの技術本田 凡, 高橋 成明, S. J. HART, R. J. RANKIN1998 年 15 巻 3 号 p. 135-145
発行日: 1998/10/08
公開日: 2012/08/27
ジャーナル フリーVoxel has developed the Digital Holography TM System that consists of three elements, the Voxcam(R): holographic camera, the Voxbox(R): light box and Voxfilm(R) media: holographicfilm, which together enable a user to produce and examine Voxgram(R): true threedimensionalmedical image. In this system, a volumetric multiple-exposure hologram of MRor CT data is automatically made and used for the creation of a copy hologram, an imagehologram to be observed on a Voxbox viewer in which the light source is a halogen lampinstead of a laser light source. In this paper, the new medical holographic system isintroduced, and the technologies used here are discussed.抄録全体を表示PDF形式でダウンロード (4253K) -
蔡 篤儀, 渡邉 伸司, 小島 克之, 高木 規宏, 富田 政明1998 年 15 巻 3 号 p. 146-151
発行日: 1998/10/08
公開日: 2012/08/27
ジャーナル フリーWe describe a method for optimizing the membership functions (MSF's) of fuzzy rules using genetic algorithms (GA's) and apply this GA - based fuzzy reasoning to discriminate heard diseases from echocardiograms. The method is to use Gaussian - distributed MSF's obtained from texture features of the echocardiograms. The standard deviations of the MSF's acting as parameters are optimized through training process using the GA. In the GA - based training, a two-step fitness function for selection phase is employed in order to increase the accuracy of the classification. The results of our experiments are very promising.抄録全体を表示PDF形式でダウンロード (2023K) -
樋口 清伯1998 年 15 巻 3 号 p. 152-158
発行日: 1998/10/08
公開日: 2012/08/27
ジャーナル フリーPDF形式でダウンロード (905K) -
ビデオ入力システムによる透視像の活用小縣 裕二, 西岡 左智, 橋爪 由美子, 松本 光弘, 井ノ上 信一, 稲本 一夫1998 年 15 巻 3 号 p. 159-170
発行日: 1998/10/08
公開日: 2012/08/27
ジャーナル フリーIn order to detect esophageal cancers efficiently, we constructed a video input system with a personal computer. The first, images of fluoroscopy are recorded on S-VHS video tapes, and then these images are transferred to the computer for adding some image processing techniques. This system could be applied to most of the routine x-ray TV systems. It is true that fluoroscopic images of the x-ray TV are inferior to it's radiographic ones. We studied how to improve the less quality fluoroscopic images to be equal to radiographic images. For this purpose we used image processing techniques on pictures of the video fluoroscopic image. As the result, it would be beneficial for detection of small pathologic lesion. This trial was succeeded to improve the image quality and beneficial for detection of a small cancer lesion in esophagus. Efficient use of the fluoroscopic image on video tape and decrease of number of radiography at the examination will diminish the patient burden because radiation dose at the radiography is higher than that of the fluoroscopy. We believe our system will be widely used to the gastrointestinal examinations in near future.抄録全体を表示PDF形式でダウンロード (4155K) -
加藤 元浩, 藤田 広志, 原 武史, 遠藤 登喜子1998 年 15 巻 3 号 p. 171-178
発行日: 1998/10/08
公開日: 2012/08/27
ジャーナル フリーPDF形式でダウンロード (2419K)
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