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[Computer tomographic densitometry of the normal vertebral body spongiosa]. [正常椎体海绵体的计算机层析密度测量]。
Computertomographie Pub Date : 1983-09-01
G C Robotti, P Fritschy, J Triller
{"title":"[Computer tomographic densitometry of the normal vertebral body spongiosa].","authors":"G C Robotti,&nbsp;P Fritschy,&nbsp;J Triller","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The absorption values of cancellous bone of the third lumbar vertebral body were measured in 80 patients by CT. It was possible to demonstrate a statistically significant linear correlation between absorption values and patient age. The older the patient, the lower the average absorption values of cancellous bone. The average absorption values in patients between 20 and 30 Jrs. were found to be about 200 HU, between 30 and 50 Jrs. 180, between 60 and 70 Jrs. 120 and between 70 and 80 Jrs. 100 HU. Although correlation between calcium salt content and absorption of bone under CT are well known, there are other factors (mainly fatty involution of bone marrow) who influences the absorption behaviour of cancellous bone.</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 3","pages":"124-7"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695700","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
[Radiation exposure in whole body and cranial CT studies in relation to parameters of the examination technic]. [全身辐射暴露与头颅CT研究与检查技术参数的关系]。
Computertomographie Pub Date : 1983-09-01
B J Fiebach, K Ewen, H B Makoski
{"title":"[Radiation exposure in whole body and cranial CT studies in relation to parameters of the examination technic].","authors":"B J Fiebach,&nbsp;K Ewen,&nbsp;H B Makoski","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The article gives the organ doses for whole body CT examinations of the thoracic region, the upper abdomen, the mesogastric and pelvic regions as well as of the lumbar vertebral column and for CT scanning of the skull. The examinations were performed using an Alderson-Rando phantom with the whole body computer tomograph Somatom DR2 supplied by Siemens and with the skull computer tomograph Siretom 2000, also supplied by Siemens. It was found that the magnitude of radiation exposure of the patient depends not only on instrument-specific properties, but also to a very large measure on the examination parameters and techniques which can vary considerably from one clinic to another.</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 3","pages":"108-11"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695697","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
[Comparison between experimentally and theoretically determined CT values]. [实验与理论CT值的比较]。
Computertomographie Pub Date : 1983-09-01
G Christ, W G Schmitt
{"title":"[Comparison between experimentally and theoretically determined CT values].","authors":"G Christ,&nbsp;W G Schmitt","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The article presents two methods for the theoretical determination of CT values. These methods involve relatively little work and cost and enable at least an estimation of the CT value of any object to be examined. The results are compared with the experimental data, and possible sources of errors are shown. The article concludes with a discussion of a few examples from actual practice.</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 3","pages":"112-8"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695698","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
[Bow artefact in B-image sonography]. b超中的弓形伪影。
Computertomographie Pub Date : 1983-09-01
J A Bönhof, M Stapff, B Bönhof, H Kremer, N Zöllner, P Linhart
{"title":"[Bow artefact in B-image sonography].","authors":"J A Bönhof,&nbsp;M Stapff,&nbsp;B Bönhof,&nbsp;H Kremer,&nbsp;N Zöllner,&nbsp;P Linhart","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Bow-shaped artifacts can often be seen in B-mode-ultrasound examinations. In order to find out the origin of these artifacts, water tank experiments were carried out and compared with in vivo observations. The studies showed that bow-shaped artifacts are caused by beam breadth, and that their shape is influenced by the type of the B-mode-instrument, the adjustment of the machine, and by the shape of the reflector. In vitro and in vivo, bow-shaped artifacts arise at strong reflectors and are visible in regions of low echogeneity. In vivo bow-shaped artifacts may imitate pathological findings such as septa or sludge.</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 3","pages":"133-7"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695703","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
[Temperature storage ability and radiation ability of rotating anodes in high-performance roentgen tubes]. [高性能x光管中旋转阳极的储温能力和辐射能力]。
Computertomographie Pub Date : 1983-09-01
P Schreiber
{"title":"[Temperature storage ability and radiation ability of rotating anodes in high-performance roentgen tubes].","authors":"P Schreiber","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In long time or serial operation metal anode discs with blackened layer can be loaded much higher than graphite anode discs, because the distance between thermal source and temperature sensitive spot in metal discs is larger than in graphite discs and the maximum permissible temperature for metal discs is much higher than that for graphite discs.</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 3","pages":"101-5"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695695","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
[Nuclear magnetic resonance tomography in gynecologic tumors]. [核磁共振断层扫描在妇科肿瘤中的应用]。
Computertomographie Pub Date : 1983-09-01
K Pfändner, H Hötzinger, A Atzinger, G Ries
{"title":"[Nuclear magnetic resonance tomography in gynecologic tumors].","authors":"K Pfändner,&nbsp;H Hötzinger,&nbsp;A Atzinger,&nbsp;G Ries","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The article discusses initial experiences of NMR examinations of carcinoma of the uterus and cervix uteri (resistive magnet, NMR prototype of Siemens). All examined carcinomas show prolonged relaxation times. Variation of measurement parameters results in good optical presentation of carcinoma tissue in the resonance scans. The results are compared with those of CT-scans and in one case with the site of the operation.</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 3","pages":"119-23"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695699","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
[Determination of integral dose in cranial CT by measurement of radiation exposure of the brain]. [通过测量脑辐射暴露来确定颅脑CT积分剂量]。
Computertomographie Pub Date : 1983-09-01
K Ewen, W Ischebeck
{"title":"[Determination of integral dose in cranial CT by measurement of radiation exposure of the brain].","authors":"K Ewen,&nbsp;W Ischebeck","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>To estimate risks involved in x-ray diagnosis, it is useful to employ the concepts of organ dose and integral dose, whereas the surface dose should be considered as unsuitable. Although the methods of measurement differ from each other, they can lead to comparable results, as is demonstrated in this article, eg, for computerised tomography of the skull.</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 3","pages":"106-7"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695696","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
[Budd-Chiari syndrome: the CT image]. [Budd-Chiari综合征:CT图像]。
Computertomographie Pub Date : 1983-09-01
W Becker
{"title":"[Budd-Chiari syndrome: the CT image].","authors":"W Becker","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The article reports on the CT image of a venous thrombosis of the liver with severe parenchymal damage (Budd-Chiari's syndrome) in a young woman, resulting in her death. The x-ray morphology image showed a liver pattern of reduced density in spot form with hepatomegaly and ascites. The hypodense areas were both circumscribed and disseminated over both lobes with density values between +15 and +30 HE. Enlargement of the lobus caudatus is considered as typical of the disease (4, 7).</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 3","pages":"128-9"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695701","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
[Acute orbital paranasal sinus complications: the CT image]. 急性眶副鼻窦并发症:CT影像。
Computertomographie Pub Date : 1983-09-01
W Becker, W Appel, D Uhlenbrock
{"title":"[Acute orbital paranasal sinus complications: the CT image].","authors":"W Becker,&nbsp;W Appel,&nbsp;D Uhlenbrock","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The authors report on an orbital complication in a child of 14 years of age with an abscess on the upper eyelid and pansinusitis on the left side. The clinical suspicion of involvement of the orbita could be definitely clarified with computed tomography only. The article describes the regression of this finding.</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 3","pages":"130-2"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695702","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
[Pancreas tail pseudotumor--CT for the detection of position variants of the pancreas tail as a cause for pathologic findings in conventional radiographic and ultrasound studies]. 【胰腺尾部假性肿瘤——CT检测胰腺尾部位置变异，作为常规影像学和超声检查病理发现的原因】。
Computertomographie Pub Date : 1983-06-01
C H Neumann, C Büttner
{"title":"[Pancreas tail pseudotumor--CT for the detection of position variants of the pancreas tail as a cause for pathologic findings in conventional radiographic and ultrasound studies].","authors":"C H Neumann,&nbsp;C Büttner","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Four cases are presented, in whom conventional radiography of the abdomen including tomography and ultrasound raised high suspicion of a left suprarenal tumor. Abdominal CT explained the finding in each case as being produced by a normal anatomic variation of the pancreatic tail, which was found in a paraspinal and suprarenal location. The statistical incidence of such a variation is discussed.</p>","PeriodicalId":79210,"journal":{"name":"Computertomographie","volume":"3 2","pages":"80-3"},"PeriodicalIF":0.0,"publicationDate":"1983-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17695691","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
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