发布求助
文献互助 智能选刊 最新文献

American journal of physiologic imaging最新文献

筛选
英文 中文
Effect of cyclosporin A on bile flow in experimental animals using technetium-99m EHIDA. 环孢素A对锝-99m EHIDA实验动物胆汁流量的影响。
American journal of physiologic imaging Pub Date : 1990-01-01
A Owunwanne, A Shihab-Eldeen, S Sadek, T Yacoub, M Awdeh, H M Abdel-Dayem
{"title":"Effect of cyclosporin A on bile flow in experimental animals using technetium-99m EHIDA.","authors":"A Owunwanne,&nbsp;A Shihab-Eldeen,&nbsp;S Sadek,&nbsp;T Yacoub,&nbsp;M Awdeh,&nbsp;H M Abdel-Dayem","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The effect of cyclosporin A (CyA) on bile flow was studied in experimental rabbits by radionuclide imaging and measurement of bilirubin levels. The rabbits were dosed intravenously with 15 mg/kg CyA for 4 consecutive days. Each rabbit served as its own control. The rabbits were injected IV with technetium (Tc)-99m EHIDA, and dynamic images were obtained prior to and 1, 4, 8, and 15 days after CyA treatment. There was no difference in half-times of blood clearance in control and CyA-treated rabbits. There were differences in the half-times of liver curve and bilirubin measurements between control and 4-day treated rabbits. By the 15th day after CyA treatment both the radionuclide findings and bilirubin levels became normal. The results suggest that CyA causes intrahepatic cholestasis and demonstrate evidence of reversibility of CyA's toxic effect on bile flow after treatment is discontinued.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 1","pages":"30-5"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13522869","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
Radionuclide imaging in osteitis deformans. 骨炎畸形的放射性核素显像。
American journal of physiologic imaging Pub Date : 1990-01-01
T K Chaudhuri, S Fink
{"title":"Radionuclide imaging in osteitis deformans.","authors":"T K Chaudhuri,&nbsp;S Fink","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>New knowledge of osteoclastic function and new treatments to reduce osteolytic activity have combined to yield new degrees of biochemical control over the increased rate of bone resorption and formation that characterized osteitis deformans (OD; Paget's disease). We have briefly outlined current concepts, and provided an example of the role radionuclide imaging can play in delineating the skeletal areas involved in this disease.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 1","pages":"42-5"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13349788","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
Time profile; space- and time-condensed images. 时间剖面;空间和时间压缩的图像。
American journal of physiologic imaging Pub Date : 1990-01-01
W Pilloy
{"title":"Time profile; space- and time-condensed images.","authors":"W Pilloy","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A method has been developed to generate \"condensed images\" and to produce instantaneously time-activity curves from rectangular regions of interest. It uses readily available tomographic software. Examples of esophageal transit and thyroid perfusion are shown. Further developments are discussed.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 1","pages":"26-9"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13522867","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
Preparation and biokinetic evaluation of various halogenated iminodiacetic acid-type compounds labeled with technetium-99m for hepatobiliary scintigraphy in the baboon (Papio ursinus) model. 用锝-99m标记的各种卤化亚氨基二乙酸型化合物在狒狒(Papio ursinus)肝胆显像中的制备及生物动力学评价。
American journal of physiologic imaging Pub Date : 1990-01-01
I C Dormehl, C Grobbelaar, A van Wyk, L Jacobs, M Maree, D Oliver
{"title":"Preparation and biokinetic evaluation of various halogenated iminodiacetic acid-type compounds labeled with technetium-99m for hepatobiliary scintigraphy in the baboon (Papio ursinus) model.","authors":"I C Dormehl,&nbsp;C Grobbelaar,&nbsp;A van Wyk,&nbsp;L Jacobs,&nbsp;M Maree,&nbsp;D Oliver","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In an evaluation of various 99mTc-labeled halogenated (F, Cl, Br, I) iminodiacetic acid (IDA) derivatives for hepatobiliary scintigraphy, it was found that, in the baboon model, none of these compounds performed as well as did disida. F-IDA was least effective, with the lowest biliary excretion and highest renal participation, but multihalogen substitution as in penta-F-IDA increased the biliary specificity and reduced urinary excretion to the extent that penta-F-IDA scored second to disida and even above I-IDA, with its high molecular weight. Surprising also was the relatively good performance of Cl-IDA compared to Br-IDA and I-IDA.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 1","pages":"3-7"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13522868","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
Feasibility of measuring first pass extraction and flow with rubidium-82 in the kidneys. 用铷-82测定肾脏第一次萃取和流量的可行性。
American journal of physiologic imaging Pub Date : 1990-01-01
N A Mullani, R D Ekas, S Marani, E E Kim, K L Gould
{"title":"Feasibility of measuring first pass extraction and flow with rubidium-82 in the kidneys.","authors":"N A Mullani,&nbsp;R D Ekas,&nbsp;S Marani,&nbsp;E E Kim,&nbsp;K L Gould","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A feasibility study has been carried out to evaluate rubidium-82, a potassium analog and generator-produced positron emitter, for measuring renal blood flow using a first pass model. Seven acute dogs were studied with beta probes and positron emission tomography to understand the dynamics of rubidium-82 in the kidneys. Preliminary results show that first pass extraction fraction for rubidium-82 ranged from 80-95% with an average of 89%. During the 150 sec of data collection, approximately 44.5% of the injected dose is excreted in the venous side and 9.75% in the ureter. Flow measurements with rubidium-82 and microspheres correlated well with the average control flow of 5.0 ml/min/gm measured by microspheres and 4.5 ml/min/gm of flow measured by rubidium-82 using the first pass model.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 4","pages":"133-40"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13245824","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
Portrayal of adrenergic denervation in the presence of myocardial infarction: a feasibility study. 心肌梗死时肾上腺素能失神经支配的描述:可行性研究。
American journal of physiologic imaging Pub Date : 1990-01-01
J C Sisson, J Johnson, G Bolgos, J J Lynch, A Uprichard, E Driscoll, D M Wieland, B Lucchesi
{"title":"Portrayal of adrenergic denervation in the presence of myocardial infarction: a feasibility study.","authors":"J C Sisson,&nbsp;J Johnson,&nbsp;G Bolgos,&nbsp;J J Lynch,&nbsp;A Uprichard,&nbsp;E Driscoll,&nbsp;D M Wieland,&nbsp;B Lucchesi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Myocardial infarction interrupts adrenergic neurons beyond the region of necrosis to give peri-infarct denervation. A method to define the regions of denervation would be a valuable aid in determining the role that loss of adrenergic neurons plays in myocardial infarction and particularly in causing arrhythmias. [123I] meta-iodobenzylguanidine (MIBG) was used to portray scintigraphically the intact neurons in dog hearts. Occlusion of the left circumflex (LCX) or the left anterior descending coronary artery (LAD) produced defects that appeared to be regularly larger in the [123I]MIBG images than in the [201T1]images of the same heart; the differences were considered to be the regions of denervation which were relatively larger after LCX than LAD infarcts. Ex vivo measurements of endogenous norepinephrine and residual [125I]MIBG concentrations gave confirmation of neuronal injury. A computer program to quantify the regions of denervation appeared imprecise, but gave some promise. Scintigraphy of [123I]MIBG offers a method to define patterns of denervation in the living animal and man.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 4","pages":"151-66"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13245826","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
Thrombogenicity and long-term patency in autologous vein, polytetrafluoroethylene (PTFE) and silk grafts in a sheep model: evaluated through the use of indium-III-labeled platelets. 绵羊模型中自体静脉、聚四氟乙烯(PTFE)和丝移植物的血栓形成性和长期通畅:通过使用铟iii标记血小板进行评估
American journal of physiologic imaging Pub Date : 1990-01-01
J T Christenson, A Owunwanne, M Nazzal
{"title":"Thrombogenicity and long-term patency in autologous vein, polytetrafluoroethylene (PTFE) and silk grafts in a sheep model: evaluated through the use of indium-III-labeled platelets.","authors":"J T Christenson,&nbsp;A Owunwanne,&nbsp;M Nazzal","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Vascular conduits have different thrombogenicity and since platelet sequestration onto a graft surface is a contributing factor for subsequent graft occlusion, this constitutes an important feature. Most studies on thrombogenicity have been done as short-term experiments. In the present communication we have evaluated graft thrombogenicity for autologous vein, polytetrafluoroethylene (PTFE), and pure chinese silk grafts, immediately after graft implantation, 1, and 2 months thereafter, using Indium-111-labelled platelets, evaluated platelet consumption, and studied patency up to 4 months after graft implantation in a sheep model. The least thrombogenic graft material was found to be the autologous vein, followed by the silk graft and the PTFE graft. Already 1 month after graft implantation healing of the grafts seems to have occurred, resulting in a minimal detectable platelet sequestration. Platelet consumption by the graft can be seen as a decrease in platelet count in the peripheral blood. Four months after graft implantation the autologous vein grafts showed a patency rate of 71%, the silk grafts 55%, and the PTFE grafts 38%. The pure silk prosthesis revealed though at harvest of the grafts, a high incidence of aneurysmal graft dilatation.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 2","pages":"80-3"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13406183","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
Current status of imaging in the diagnosis of acute appendicitis. 急性阑尾炎的影像学诊断现状。
American journal of physiologic imaging Pub Date : 1990-01-01
T K Chaudhuri, S Fink, C B Mahon, H Mahadevan, A Farpour
{"title":"Current status of imaging in the diagnosis of acute appendicitis.","authors":"T K Chaudhuri,&nbsp;S Fink,&nbsp;C B Mahon,&nbsp;H Mahadevan,&nbsp;A Farpour","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The diagnosis of acute appendicitis remains a problem in clinical surgery. Negative appendectomy represents misdiagnosis, and perforation may be the result of delayed diagnosis. The accuracy of diagnosis has improved little in decades, with a rate of 20% for negative appendectomy and 21% for perforation in one large series [Lewis FR: Arch Surg 110:677-685, 1975. Clearly, the need exists for a sensitive yet specific diagnostic imaging tool. The purpose of this paper is to review the role of currently available imaging modalities in the diagnosis of acute appendicitis.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 2","pages":"89-96"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13404100","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
Subcortical arteriosclerotic encephalopathy: single photon emission computed tomography-magnetic resonance imaging correlation. 皮质下动脉硬化性脑病:单光子发射计算机断层扫描与磁共振成像的相关性。
American journal of physiologic imaging Pub Date : 1990-01-01
M T De Cristofaro, M Mascalchi, A Pupi, P Nencini, A R Formiconi, D Inzitari, G Dal Pozzo, U Meldolesi
{"title":"Subcortical arteriosclerotic encephalopathy: single photon emission computed tomography-magnetic resonance imaging correlation.","authors":"M T De Cristofaro,&nbsp;M Mascalchi,&nbsp;A Pupi,&nbsp;P Nencini,&nbsp;A R Formiconi,&nbsp;D Inzitari,&nbsp;G Dal Pozzo,&nbsp;U Meldolesi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Regional cerebral blood flow was studied using 99mTc-HM-PAO and single photon emission computed tomography (SPECT) in five healthy subjects and in eight patients with clinical and computed tomography (CT) features of subcortical arteriosclerotic encephalopathy. All the patients and controls underwent magnetic resonance imaging (MRI). Circumscribed cortical hypoperfusion was observed in three patients, and in one case there was no evidence of cortical or sulcal alterations on MRI. In all the patients, a reduction of the white matter perfusion was found in periventricular and/or supraventricular regions. This pattern was substantially correlated with the typical white matter hyperintensities shown by MRI scans. These findings support the hypothesis that white matter hypoperfusion is the most prominent functional abnormality in subcortical arteriosclerotic encephalopathy.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 2","pages":"68-74"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13406181","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
Iron dextran: bone imaging patterns of absorption--a case report. 右旋糖酐铁:骨吸收成像模式1例报告。
American journal of physiologic imaging Pub Date : 1990-01-01
B Eisenberg, A J Meholic, E R Arrington, T M Elliott, P W Wiest, R L Olander
{"title":"Iron dextran: bone imaging patterns of absorption--a case report.","authors":"B Eisenberg,&nbsp;A J Meholic,&nbsp;E R Arrington,&nbsp;T M Elliott,&nbsp;P W Wiest,&nbsp;R L Olander","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This case illustrates two different patterns of absorption of Iron Dextran in the gluteal soft tissues due to an intramuscular and a more proper Z-track technique. A 65 year old female presented to the nuclear medicine service for a bone scan to rule out metastatic disease from a surgically resected colon cancer. While the first bone scan showed no evidence of metastases, an abnormal accumulation of Technetium-99m methylene diphosphonate was noted in the left gluteal soft tissue region.</p>","PeriodicalId":76992,"journal":{"name":"American journal of physiologic imaging","volume":"5 3","pages":"116-8"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13435502","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信