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Computed tomography evaluation of the poorly or nonvisualized kidney 肾脏显影不良或未显影的计算机断层扫描评价
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90040-X
Sheldon R. Karasick , William Herring
{"title":"Computed tomography evaluation of the poorly or nonvisualized kidney","authors":"Sheldon R. Karasick ,&nbsp;William Herring","doi":"10.1016/0363-8235(80)90040-X","DOIUrl":"10.1016/0363-8235(80)90040-X","url":null,"abstract":"<div><p>Computed tomography (CT) can provide a quick and accurate evaluation of the poorly or nonvisualized kidney on intravenous pyelogram. End stage renal disease can be differentiated from hydronephrosis. Chronic pyelonephritis, perirenal abscess and congenital absence of the kidney can also be determined.</p></div>","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 1","pages":"Pages 39-46"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90040-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18381066","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: 6
Evaluation of adrenal disease by computed tomography 计算机断层扫描对肾上腺疾病的评价
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90018-6
John A. Curtis, Richard E. Brennan, Alfred B. Kurtz
{"title":"Evaluation of adrenal disease by computed tomography","authors":"John A. Curtis,&nbsp;Richard E. Brennan,&nbsp;Alfred B. Kurtz","doi":"10.1016/0363-8235(80)90018-6","DOIUrl":"10.1016/0363-8235(80)90018-6","url":null,"abstract":"<div><p>CT is the imaging modality of choice for screening possible adrenal pathology. It is non-invasive, safe, accurate and widely available. Excretory urography is not a good screening procedure. Ultrasound and radionuclide scanning are complementary procedures which often resolve equivocal or unsatisfactory CT studies. Angiography should be reserved for demonstration of vascular anatomy and/or cases unsolved by other techniques.</p></div>","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 3","pages":"Pages 165-168"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90018-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18439510","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: 6
The effects of sampling on CT images 采样对CT图像的影响
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90023-X
Peter M. Joseph , Robin D. Spital , Charles D. Stockham
{"title":"The effects of sampling on CT images","authors":"Peter M. Joseph ,&nbsp;Robin D. Spital ,&nbsp;Charles D. Stockham","doi":"10.1016/0363-8235(80)90023-X","DOIUrl":"10.1016/0363-8235(80)90023-X","url":null,"abstract":"<div><p>Among the most important parameters that characterize CT data collection are the linear sample spacing, and the nominal beam-width. In this paper, we study the effects of these parameters on CT imaging using both a theoretical model and simulated images. An exact treatment of the point spread function in our model, which properly accounts for aliasing and reconstruction algorithm effects, is given for the case of parallel beam geometry. It is shown that it is always desirable to make the sample spacing as small as possible. In particular, aliasing artifacts are shown to decrease as sample spacing is decreased, both in the theoretical point spread function and in simulated CT images. Furthermore, abasing is shown to destroy the spatial invariance of the point spread function, whose shape will then depend on the exact location of the point in the scan field. Also investigated is the “volcano effect”, in which the point spread function develops a central depression when small sample spacing is used. It is shown that this effect produces no unusual distortions in the reconstruction of objects larger in diameter than the beam width; and further, that an attempt to avoid the volcano effect by means of inadequate sampling can have disastrous consequences for the reconstructed image.</p></div>","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 3","pages":"Pages 189-206"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90023-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18439514","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: 33
Computer assisted tomography in pre-operative evaluation for splenectomy 计算机辅助断层扫描在脾切除术术前评价中的应用
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90021-6
E. Besigye, G. Lund
{"title":"Computer assisted tomography in pre-operative evaluation for splenectomy","authors":"E. Besigye,&nbsp;G. Lund","doi":"10.1016/0363-8235(80)90021-6","DOIUrl":"10.1016/0363-8235(80)90021-6","url":null,"abstract":"<div><p>Two patients with anemia and clinically palpable spleens, 7 and 5 fingers below the costal margin respectively, had abdominal CT done as part of general assessment prior to contemplated splenectomy. Case 1, with long-standing myelofibrosis, showed hepato-splenomegaly and ascites. The enormous spleen extended deep into the pelvis. The second case, had a retroperitoneal tumour displacing both the spleen and the left kidney. Histology was that of a liposaroma. Clinically and by conventional radiography, the findings were unanticipated. They clearly testify the significant role of CT in pre-operative procedures, and are the basis of this report.</p></div>","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 3","pages":"Pages 177-179"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90021-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18439512","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
Clinical nuclear imaging 1980 临床核影像，1980
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90044-7
{"title":"Clinical nuclear imaging 1980","authors":"","doi":"10.1016/0363-8235(80)90044-7","DOIUrl":"https://doi.org/10.1016/0363-8235(80)90044-7","url":null,"abstract":"","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 1","pages":"Page i"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90044-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137124542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A pitfall in the diagnosis of a subphrenic abscess seen on computerized tomography 计算机断层扫描诊断膈下脓肿的一个缺陷
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90016-2
Harris Newmark III , Ralph Burrows , Ellis L. Silberman , Julius J. Smith , Eugene Fishman , Harold Brourman
{"title":"A pitfall in the diagnosis of a subphrenic abscess seen on computerized tomography","authors":"Harris Newmark III ,&nbsp;Ralph Burrows ,&nbsp;Ellis L. Silberman ,&nbsp;Julius J. Smith ,&nbsp;Eugene Fishman ,&nbsp;Harold Brourman","doi":"10.1016/0363-8235(80)90016-2","DOIUrl":"10.1016/0363-8235(80)90016-2","url":null,"abstract":"<div><p>The authors describe a case in which a delayed diagnosis of an absecess in the right upper quadrant (secondary to a ruptured gallbladder) was caused by a mistaken diagnosis of interposition of the colon between the liver and the diaphragm on a computed tomogram scan and the lack of significant clinical symptomatology. This case report is presented hopefully to enable one to suggest an earlier diagnosis of a similar situation and to illustrate additional pathology on computed tomography scans.</p></div>","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 3","pages":"Pages 155-157"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90016-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18439509","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: 1
A distended bladder simulating a neoplastic or cystic mass on computed tomography 膀胱膨胀在计算机断层扫描上表现为肿瘤或囊性肿块
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90020-4
Harris Newmark III
{"title":"A distended bladder simulating a neoplastic or cystic mass on computed tomography","authors":"Harris Newmark III","doi":"10.1016/0363-8235(80)90020-4","DOIUrl":"10.1016/0363-8235(80)90020-4","url":null,"abstract":"<div><p>The author presents a case in which a patient clinically was diagnosed as having an abdominal and pelvic mass. Initially, the computerized tomogram scan appeared to show a large abdominal mass which after intravenous contrast enhancement was then correctly interpreted as showing a large bladder secondary to bladder outlet obstruction.</p></div>","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 3","pages":"Pages 173-175"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90020-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18439511","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
Computed tomography of the kidneys 肾脏的计算机断层扫描
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90039-3
John A. Curtis , Richard E. Brennan , Carl Rubin , Alfred Kurtz , Barry B. Goldberg
{"title":"Computed tomography of the kidneys","authors":"John A. Curtis ,&nbsp;Richard E. Brennan ,&nbsp;Carl Rubin ,&nbsp;Alfred Kurtz ,&nbsp;Barry B. Goldberg","doi":"10.1016/0363-8235(80)90039-3","DOIUrl":"10.1016/0363-8235(80)90039-3","url":null,"abstract":"<div><p>Computed tomography has assumed an important role in evaluating renal disorders. It is especially suited to the study of masses suspected of containing fat, parapelvic masses, displacement or malposition of the urinary tract and kidneys which are poorly visualized by other means. The need for correlation with clinical findings and other imaging methods is stressed.</p></div>","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 1","pages":"Pages 17-37"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90039-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18381065","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: 9
On the impact of CT scanning on radiotherapy planning CT扫描对放疗计划的影响
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90042-3
J. Van Dyk, J.J. Battista , J.R. Cunningham, W.D. Rider, M.R. Sontag
{"title":"On the impact of CT scanning on radiotherapy planning","authors":"J. Van Dyk,&nbsp;J.J. Battista ,&nbsp;J.R. Cunningham,&nbsp;W.D. Rider,&nbsp;M.R. Sontag","doi":"10.1016/0363-8235(80)90042-3","DOIUrl":"10.1016/0363-8235(80)90042-3","url":null,"abstract":"<div><p>Computed tomography (CT) is used more frequently for planning radiotherapy techniques as well as for computing dose distributions. A CT based treatment planning system has been in routine clinical use in the Princess Margaret Hospital for the past 6 months. In this report, a review is given of our practical experience. The benefit of CT-aided treatment planning lies in three areas: (a) tumour and normal tissue localization, (b) more accurate dose computations and (c) tumour regression information. Although the efficacy of CT-aided treatment planning can only be determined with systematic clinical trials evaluating better tumour control and reduced normal tissue complications, such studies will not provide data for a number of years to come. However, we are considering a number of specific sites in detail from the point of view of tissue density determination and corresponding dosage calculations. The results of the upper half body irradiation study are reviewed and a proposed cervix study is summarized. Two specific patient cases are considered to illustrate practical clinical situations which are not suitable for evaluation in prospective clinical trials. In addition to the detailed studies, the main impact of CT scanning in radiotherapy may well lie in the improvements that are made in individual treatment procedures.</p></div>","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 1","pages":"Pages 55-65"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90042-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18381068","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: 20
Computed tomography and trauma myron 计算机断层扫描和创伤myron
Computerized tomography Pub Date : 1980-01-01 Epub Date: 2004-04-15 DOI: 10.1016/0363-8235(80)90041-1
Myrron L. Blumberg
{"title":"Computed tomography and trauma myron","authors":"Myrron L. Blumberg","doi":"10.1016/0363-8235(80)90041-1","DOIUrl":"10.1016/0363-8235(80)90041-1","url":null,"abstract":"<div><p>The evaluation of patients with trauma to the acetabulum may be difficult due to the complex bony structures and the patient's clinical condition. Computed tomography is a method for simple and accurate examination.</p></div>","PeriodicalId":75732,"journal":{"name":"Computerized tomography","volume":"4 1","pages":"Pages 47-53"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0363-8235(80)90041-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18381067","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: 5
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