Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica最新文献_第9页

[Feasibility of CT attenuation values in the diagnosis of anemia]. 【CT衰减值在贫血诊断中的可行性】。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-09-01

Youichi Sato, Eito Kozawa, Shunji Tsukuda, Makoto Amanuma

{"title":"[Feasibility of CT attenuation values in the diagnosis of anemia].","authors":"Youichi Sato, Eito Kozawa, Shunji Tsukuda, Makoto Amanuma","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: To verify the possible correlation between CT attenuation value and hemoglobin (Hb).Materials and methods: CT attenuation was evaluated in 113 CT studies. Anemia was defined as an Hb level less than 14 g/dl in males and less than 12 g/dl in females. Hb was compared visually by grading (Grade 1: cardiac muscle density much higher than lumen, Grade 2: cardiac muscle density higher than lumen, Grade 3: cardiac muscle density equal to lumen), and with HU of CT attenuation on unpaired t-test (p<0.01). Correlations were calculated using the linear regression method.Results: Hb of less than 6 g/dl was found to be Grade 1, while that over 12 g/dl was considered Grade 3 on visual grading. The attenuation numbers of subjects with anemia yielded low values, whereas those of normal subjects were higher. There were significant differences between subjects with anemia and normal subjects (p<0.01). HU versus hemoglobin showed a linear increase, with a correlation coefficient of 0.76.Conclusions: This simple, readily available information may provide a valuable adjunct in the interpretation of CT examinations.","PeriodicalId":19251,"journal":{"name":"Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica","volume":"64 7","pages":"394-7"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24938573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[History of radiation therapy]. [放射治疗史]。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-09-01

Yukio Tateno

引用次数: 0

[Proposal for a system of recording radiation exposure for individual patients]. [关于建立个体病人辐射暴露记录系统的建议]。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-09-01

Norinobu Honda

引用次数: 0

[Radiation exposure doses in medical procedures]. [医疗过程中的辐射暴露剂量]。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-09-01

Kazuo Awai

引用次数: 0

[Risk of radiation-related cancer following exposure to diagnostic radiation]. [诊断性辐射暴露后患辐射相关癌症的风险]。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-09-01

Michiaki Kai

{"title":"[Risk of radiation-related cancer following exposure to diagnostic radiation].","authors":"Michiaki Kai","doi":"","DOIUrl":"","url":null,"abstract":"The paper on the risk of radiation-related cancer following exposure to diagnostic X-ray, appeared in the issue of Jan 31, 2004 of the Lancet, and described an attributable risk estimate of 3.2% from the current medical exposure among the cancer incidences in Japan. While the fact that Japan is known as a country with the highest level of medical exposure, the quantification of radiation-related cancer risk have made quite an impact on medical society. The risk estimate based on the linear-non-threshold (LNT) dose response that remains unresolved scientifically need further research, but the radiation risk has been a useful tool not only for decision-making by risk-benefit analysis such as justification of medical use of radiation, but also for comparison with other risks. Recent radiation biology suggests that a bystander effect and adaptive response might modify the estimated cancer risk based on the LNT model at low doses. The risk from most diagnostic X-rays may be so small that excess cancer due to radiation can not be statistically detected. However, a diagnosis giving a relatively higher dose such as computer tomography in children should be carefully justified using a risk estimate. Raising awareness of low-dose cancer risk should involve not only understanding the process of risk estimation including data and assumption but also understanding there is indirect evidence for risk of lower level radiation exposure in medical procedures.","PeriodicalId":19251,"journal":{"name":"Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica","volume":"64 7 Suppl","pages":"11-5"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24938638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[History of radiation therapy]. [放射治疗史]。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-07-01

Yukio Tateno

引用次数: 0

[Clinical usefulness of multidetector-row CT to evaluate coronary artery calcium score in type 2 diabetes]. [多排CT评价2型糖尿病患者冠状动脉钙评分的临床价值]。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-07-01

Makiko Nishioka, Toru Sakuma, Hironari Sano, Kazunori Utsunomiya, Toshihiko Agata, Keisuke Shimizu, Naoko Tajima

{"title":"[Clinical usefulness of multidetector-row CT to evaluate coronary artery calcium score in type 2 diabetes].","authors":"Makiko Nishioka, Toru Sakuma, Hironari Sano, Kazunori Utsunomiya, Toshihiko Agata, Keisuke Shimizu, Naoko Tajima","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: According to recent studies, multidetector-row CT (MDCT) with a retrospective ECG-gating reconstruction algorithm shows a high correlation with coronary artery calcium score determined using electron-beam CT. Diabetes leads to many macrovascular complications, including coronary artery disease. The aim of this study was to evaluate risk factors for cardiac macroangiopathy in type 2 diabetes using MDCT.Materials and methods: An observational cross-sectional study was performed in 90 patients with diabetes mellitus. Coronary calcium data was acquired by MDCT (SOMATOM Volume Zoom, Siemens AG, Medical Solutions, Germany). Physical examinations, laboratory data, glycemic control, and control of other risk factors were analyzed.Results: The coronary artery calcium score increased with age. Multivariant analysis revealed that the coronary calcium score was closely correlated with electrocardiogram evaluation and control of hypertension.Conclusions: Coronary artery calcium score as determined by MDCT can be used as a screening radiological examination for cardiac macroangiopathy in diabetes patients with electrocardiogram abnormality and hypertension.","PeriodicalId":19251,"journal":{"name":"Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica","volume":"64 5","pages":"288-93"},"PeriodicalIF":0.0,"publicationDate":"2004-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24689323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Breast cancer screening in Japan--present status and recent movement]. 【日本乳腺癌筛查的现状及近期动向】。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-07-01

Tokiko Endo

{"title":"[Breast cancer screening in Japan--present status and recent movement].","authors":"Tokiko Endo","doi":"","DOIUrl":"","url":null,"abstract":"As the incidence of breast cancer and deaths from breast cancer have been increasing, the Ministry of Public Welfare and Labor has been promoting breast cancer screening. Mammography screening began in fiscal year 2000 for those women 50 years of age or over, but attendance has not been increasing. This year (2004), the Ministry determined that mammography would be applicable to those 40 years of age or over and that screening with palpation alone would be abolished. To determine the effectiveness of the measures, mammography equipment, technologists, and readers were calculated. If the attendance were 50% of the 35,497 thousand women in this biennial screening, 40 persons would be examined by one apparatus per day, and, as there are 200 working days in a year, 1,109 apparatus would be needed. In the same way, if a technologist can examine 5,000 women, and a doctor can read 10,000 cases a year, both are apparently deficient in some prefectures. The standards of quality control for digital mammography have been determined by the Japan Radiological Society, and a \"step phantom for mammography\" has been developed. Qualitative evaluation of hard-copy clinical images has also started. All of the standards are presented in \"Mammography Guidelines, Second Edition,\" published by Igakushoin, Tokyo, Japan, 2004.","PeriodicalId":19251,"journal":{"name":"Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica","volume":"64 5","pages":"277-83"},"PeriodicalIF":0.0,"publicationDate":"2004-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24689321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[A case of extrapontine myelinolysis precipitated by correction of a hyper-osmolar state]. [1例高渗透压状态矫正引起的外胆管髓鞘溶解]。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-07-01

Sachiko Achiwa, Kumiko Ando, Reiichi Ishikura, Yoshihiro Takada, Yusuke Takahashi

引用次数: 0

[A comparative study of CT and barium enema examination in diagnosis of peritoneal metastasis from gastric carcinoma]. 【CT与钡灌肠检查诊断胃癌腹膜转移的比较研究】。

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica Pub Date : 2004-07-01

Satoshi Nozu, Tetsuo Nakajima, Toshihiro Ichikawa, Katsuhiko Okayasu

{"title":"[A comparative study of CT and barium enema examination in diagnosis of peritoneal metastasis from gastric carcinoma].","authors":"Satoshi Nozu, Tetsuo Nakajima, Toshihiro Ichikawa, Katsuhiko Okayasu","doi":"","DOIUrl":"","url":null,"abstract":"Objective: To compare the results of CT and barium enema examination in the diagnosis of peritoneal metastasis from gastric carcinoma.Materials: Peritoneal metastases were pathologically confirmed in nine patients with gastric carcinoma who had had abdominal CT and barium enema examinations prior to surgery.Methods and results: Five patients were reported to have colonic wall rigidity on preoperative barium enema examination. Review of the images indicated that six cases showed rigidity. On the other hand, no CT findings suggestive of peritoneal metastasis were reported in eight patients without ascites. No patients were indicated to have intraperitoneal nodules. For the retrospective evaluation, we changed the diagnostic procedure: the CT window setting was changed in wide window width (from 250 Hounsfield units (HU) to 400HU)and low window level (50-60HU to 0 HU), and reading mode was changed to a cine paging mode with a picture archiving and communication system (PACS) instead of hard-copy review. It followed that intraperitoneal nodules suggestive of peritoneal metastasis were detected in eight patients.Conclusion: On conventional image reading, barium enema examination is of greater assistance than CT examination for detecting peritoneal metastasis from gastric carcinoma. However, the new CT reading method with PACS is more sensitive than barium enema examination for diagnosing peritoneal metastasis.","PeriodicalId":19251,"journal":{"name":"Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica","volume":"64 5","pages":"284-7"},"PeriodicalIF":0.0,"publicationDate":"2004-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24689322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0