巻号一覧
37 巻 (1986)
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37 巻, 5 号
選択された号の論文の8件中1～8を表示しています
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田中 満1986 年 37 巻 5 号 p. 373-377
発行日: 1986/10/10
公開日: 2010/02/22
ジャーナル フリーAlthough plane chest roentgenography, sectional roentgenography, bronchography, pulmonary andiography and so on have always been used for imaging diagnosis in the respiratory organs, the current widespread use of X-ray computed tomography (CT) promoted the early introduction of computers to the field of imaging diagnosis. As a result, combination of X-rays with a computer produced digital radiography (DR) as well as CT, while combination of high-energy physics with a computer produced positron computed tomography and magnetic resonance imaging (MRI). Among current procedures for imaging diagnosis in the respiratory organs, CT, DR, MRI and xerotomography are noted, but advances in imaging diagnostic techniques are marked and newly improved equipment has been successively produced. Moreover, the need for effective combination of imaging diagnostic apparatuses has also been stated. Advances in imaging diagnosis have been having a strong impact on conventional roentgen diagnosis. Therefore, various imaging diagnostic techniques are reviewed and introduced herein.抄録全体を表示PDF形式でダウンロード (5252K) -
村田 洋子, 室井 正彦, 吉田 操, 奥島 憲彦, 杉山 明徳, 井手 博子, 山田 明義1986 年 37 巻 5 号 p. 378-385
発行日: 1986/10/10
公開日: 2010/02/22
ジャーナル フリーAn appropriate therapy for a patient with esophageal carcinoma should be based on precise staging of the tumor. Recent advances in endoscopic ultrasonography (EUS) allowed us further evaluation of the diagnosis of esophageal carcinoma.
1) Estimation of depth of tumor invasion: Normal esophageal wall was consisted of 5 layers by EUS. Third layer corresponded to the submucosal layer and 4th layer also corresponded to the muscular layer. Tumor invasion destroyed those structures, so depth of tumor invasion could be estimated by EUS. Overall accuracy rate was 84%.
2) Estimation of lymph node metastasis: Mediastinal lymph nodes larger than 3mm in size could be detected by EUS. Lymph node metastases were suspected in case of lymph node of spherical shape with well defined border or that with hyperechoic spots scattered in it. Overall accuracy rate was 89%.抄録全体を表示PDF形式でダウンロード (8075K) -
杉山 明徳, 山田 明義, 佐藤 裕一, 奥島 憲彦, 村田 洋子, 吉田 操, 井手 博子, 磯部 義憲, 羽生 富士夫, 遠藤 光夫1986 年 37 巻 5 号 p. 386-392
発行日: 1986/10/10
公開日: 2010/02/22
ジャーナル フリーOne hundred and twenty eight patients with thoracic esophageal carcinomas encountered clinically were admitted to this study. In the present study, we diagnosed the metastasis of esophageal carcinoma to cervical and superior mediastinal lymph nodes, and its invasion into the neighboring structures such as trachea and bronchus based on CT scan.
We mentioned the usefulness and limitation of diagnosis by CT. Diagnostic accuracy of the metastasis to lymph nodes on CT was 93.3%. For lymph nodes more than 1cm in diameter, correct diagnosis by CT was made in 96.0%. About 25% of large lymph nodes in the area of 107 were complicated with anthracosis, so it seemed difficult to diagnose the presence of metastasis by CT. Diagnostic accuracy of the direct invasion was 99.2% in the trachea and 99.2% in the bronchus. Accordingly, CT scan was a useful method to know the degree of the tumor invasion in these regions.抄録全体を表示PDF形式でダウンロード (5245K) -
甲田 英一, 田中 満, 藤岡 睦久, 宮坂 勝之1986 年 37 巻 5 号 p. 393-399
発行日: 1986/10/10
公開日: 2010/02/22
ジャーナル フリーThis paper shows the efficacy of computed radiography for major airway in pediatrics. For this purpose, we examined 40 children (range 2 weeks to 14 years; mean 2.3 years) using Fuji Computed Radiography (FCR) and radiation dose using pediatric phantom under FCR and conventional film and screen system.
In comparison study with FCR and conventional film and screen system, FCR images are superior to conventional system in all cases. Scorings were done for the quality of the image of the pharynx, the trachea, and both main bronchi.
In phantom study to check radiation dose, radiation dose could be reduced 1/6 of the value using high speed film and screen and 1/15 of the value using conventional speed film and screen.
FCR also showed clear airway images in all cases but technical failure to evaluate the clinical lesion.
These results suggest that FCR is the adequate imaging modality to evaluate the major airway in children.抄録全体を表示PDF形式でダウンロード (7644K) -
熊川 孝三1986 年 37 巻 5 号 p. 400-407
発行日: 1986/10/10
公開日: 2010/02/22
ジャーナル フリーThe author evaluated the usefulness of digital radiography in the radiographic diagnosis of laryngeal diseases, utilizing Fuji Computed Radiography (CR) system. Main distinctive features of CR are as follows; photostimulable phosphor is used as the memory material, X-ray energy pattern is converted into digital signals, and then image signals are processed digitally.
As the result, three types of image processing of CR, i. e. contrast processing, spatial frequency enhancement, and image subtraction, were clinically useful methods. Especially, one shot dual energy subtraction method is a new technical procedure to extinguish both cervical spine and calcified cartilage shadows in plain antero-posterior laryngeal X-photograph. Although this method belongs to a kind of plain X-photography, the feature of the laryngeal soft structures can be clearly demonstrated without little mortion artifact during examination.
Digital radiography has so high spatial resolution and various image processing systems that it is possible to replace this system for some of the conventional screen-film method in X-ray analysis of laryngeal diseases.抄録全体を表示PDF形式でダウンロード (8623K) -
藤原 久郎, 松村 高洋1986 年 37 巻 5 号 p. 408-411
発行日: 1986/10/10
公開日: 2010/02/22
ジャーナル フリーConventional X-ray examination is most frequently performed in upper airway diseases of children. However, the information from conventional screening X-ray films is not enough for diagnosis of the diseases, because contrast between air and soft tissues can not be fully obtained by an ordinary radiography. Fuji Computed Radiography (FCR), one of the digital computed radiography, displays a highly qualified image of the lesions. FCR was applied to 2 cases of the subglottic stenosis after tracheotomy.
Case 1: A 4-year-old girl was treated by CO2 laser microsurgery and T-tube insertion under diagnosis of the subglottic stenosis. A quantitative evaluation of the stenosis was done by FCR before and after the surgery.
Case 2: A 1-year-old girl with subglottic granuloma was followed up by FCR for 1 month. The granulomatous lesion of the subglottic space subsided spontaneously. It is concluded from the present study that FCR is a useful method to observe the airway lesions precisely as compared to an ordinary radiography.抄録全体を表示PDF形式でダウンロード (3948K) -
藤本 泰幸, 田中 修, 宮田 守, 平出 文久, 森田 守1986 年 37 巻 5 号 p. 412-421
発行日: 1986/10/10
公開日: 2010/02/22
ジャーナル フリーMRI (magnetic resonance imaging) is a new diagnostic technique that is being applied to study disease processes that involve the upper aerodigestive tract and cranial nerves of interest to otolaryngologist.
Thirty six patients with head and neck tumor were enrolled to study the diagnostic efficacy of MRI in comparison with X-ray computed tomography (X-ray CT). Four cases with stenosis or/and obstruction of the airway caused by the head and neck tumors were presented. Characteristic findings of MRI in these cases were discussed.
Multiplanar information from MRI, especially from coronal and sagittal sections, made it easier to determine the type and extent of the lesion. MRI was found to be superior to X-ray CT in the point of tumor contrast (conspicuity). High signal linear structure which is in the periphery of the tumor offers important information that no adhesion is present.抄録全体を表示PDF形式でダウンロード (12651K) -
加藤 秀雄1986 年 37 巻 5 号 p. 422-423
発行日: 1986/10/10
公開日: 2010/02/22
ジャーナル フリーPDF形式でダウンロード (219K)
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