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Total photon cross-sections of compounds in the energy range 145–1120 keV 145-1120 keV能量范围内化合物的总光子截面
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90056-K
R. Jayaraman, V. Visweswara Rao
{"title":"Total photon cross-sections of compounds in the energy range 145–1120 keV","authors":"R. Jayaraman,&nbsp;V. Visweswara Rao","doi":"10.1016/0883-2889(92)90056-K","DOIUrl":"10.1016/0883-2889(92)90056-K","url":null,"abstract":"<div><p>Total photon cross-sections have been measured in 15 compounds and in 3 selected elements at 7 different photon energies in the range of 145–1120 keV on a good geometry set-up using a NaI(Tl) detector coupled to a ND 60 multichannel analyser. The results include some data points which have not been previously reported. From the measured total cross-sections per molecule of the compound, atomic cross-sections in elements have been extracted using the mixture rule. The derived atomic cross-sections have been compared with the theoretical Hubbell-Scofield values and of Storm and Israel. In addition, the experimental total photon cross-sections of the three selected elements are compared with those derived from measurements on the compounds containing the selected elements. A good agreement is observed amongst the different values, within experimental error.</p></div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1139-1142"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90056-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73054332","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: 3
A wide-range flexible gamma probe 一种宽量程灵活的伽马探针
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90063-K
R.J. Nickles , O.H. Solin
{"title":"A wide-range flexible gamma probe","authors":"R.J. Nickles ,&nbsp;O.H. Solin","doi":"10.1016/0883-2889(92)90063-K","DOIUrl":"10.1016/0883-2889(92)90063-K","url":null,"abstract":"","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1169-1170"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90063-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76563247","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: 2
An update on the recovery of [18O]water during the synthesis of [18F]FDG by a simple modification in the procedure 在合成[18F]FDG过程中通过简单修改程序回收[18O]水的最新情况
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90049-K
Thomas Chaly, Dibyendu Bandyopadhyay, Ralph Matacchieri, Donald Margouleff
{"title":"An update on the recovery of [18O]water during the synthesis of [18F]FDG by a simple modification in the procedure","authors":"Thomas Chaly,&nbsp;Dibyendu Bandyopadhyay,&nbsp;Ralph Matacchieri,&nbsp;Donald Margouleff","doi":"10.1016/0883-2889(92)90049-K","DOIUrl":"10.1016/0883-2889(92)90049-K","url":null,"abstract":"<div><p>A simple procedural change for the synthesis of [<sup>18</sup>F]FDG has been used to recover [<sup>18</sup>O]water by direct distillation. The [<sup>18</sup>O]water thus recovered is reusable to produce [<sup>18</sup>F]fluoride without further purification. The recovery of [<sup>18</sup>O]water is reliable and our results are based on over 300 routine FDG preparations. The [<sup>18</sup>F]fluoride present in the target water is converted to potassium fluoride during the distillation and will be available for further reaction to complete the synthesis of FDG. The same procedure can be used to recover [<sup>18</sup>O]water in similar situations where [<sup>18</sup>F]fluoride is converted to potassium fluoride and in turn used to react with kryptofix for labeling other precursors.</p></div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1089-1091"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90049-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87857235","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: 1
On-line [11C]methylation using [11C]methyl iodide for the automated preparation of 11C-radiopharmaceuticals 使用[11C]甲基碘化物进行在线[11C]甲基化，用于自动制备11C-放射性药物
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90048-J
Ren Iwata , Claudio Pascali , Mitsuaki Yuasa , Kazuhiko Yanai , Toshihiro Takahashi , Tatsuo Ido
{"title":"On-line [11C]methylation using [11C]methyl iodide for the automated preparation of 11C-radiopharmaceuticals","authors":"Ren Iwata ,&nbsp;Claudio Pascali ,&nbsp;Mitsuaki Yuasa ,&nbsp;Kazuhiko Yanai ,&nbsp;Toshihiro Takahashi ,&nbsp;Tatsuo Ido","doi":"10.1016/0883-2889(92)90048-J","DOIUrl":"10.1016/0883-2889(92)90048-J","url":null,"abstract":"<div><p>A novel method for the efficient preparation of <sup>11</sup>C-radiopharmaceuticals by on-line [<sup>11</sup>C]methylation using [<sup>11</sup>C]methyl iodide has been developed and applied to a rapid, convenient automated system. [<sup>11</sup>C]Methyl iodide is first trapped in a short column, containing an adsorber and coated substrate, which is connected to an HPLC injector. DMF is then introduced. Alternatively the substrate is added with the DMF. A whole reaction mixture can be easily injected onto an HPLC column for purification by switching the injector valve immediately after the reaction. Thus, radiochemical yields in the preparation of <sup>11</sup>C-labeled doxepin, benztropine, cyproheptadine and <em>N</em>-methylspiperone have been improved remarkably and the synthetic procedure simplified.</p></div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1083-1088"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90048-J","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12503772","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: 30
Radiation protection dosimetry: Respiratory tract dosimetry 辐射防护剂量学:呼吸道剂量学
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90066-N
Lisa R. Karam
{"title":"Radiation protection dosimetry: Respiratory tract dosimetry","authors":"Lisa R. Karam","doi":"10.1016/0883-2889(92)90066-N","DOIUrl":"10.1016/0883-2889(92)90066-N","url":null,"abstract":"","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Page 1179"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90066-N","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80675265","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
Synthesis, characterization and biodistribution of the cationic technetium(II), 1,10-phenanthroline chelate 阳离子1,10-邻菲罗啉螯合物锝(II)的合成、表征及生物分布
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90047-I
K. Schwochau, K.H. Linse, Z.F. Su
{"title":"Synthesis, characterization and biodistribution of the cationic technetium(II), 1,10-phenanthroline chelate","authors":"K. Schwochau,&nbsp;K.H. Linse,&nbsp;Z.F. Su","doi":"10.1016/0883-2889(92)90047-I","DOIUrl":"10.1016/0883-2889(92)90047-I","url":null,"abstract":"<div><p>[<sup>99</sup>Tc(phen)<sub>3</sub>]Cl<sub>2</sub> was synthesized by reduction of pertechnetate with sodium borohydride in the presence of an excess of 1,10-phenanthroline and characterized by FAB mass spectrometry, magnetic susceptibility measurements, and i.r./vis/u.v. spectrophotometry. For biodistribution evaluation in mice [<sup>99m</sup>Tc(phen)<sub>3</sub>]Cl<sub>2</sub> could be obtained in a radiochemical purity of 92.5% using a similar procedure. The rather hydrophilic chelate was predominantly excreted by the kidneys. Its low blood retention resulted in a heart/blood activity ratio of 4.2 at 100 min post-injection.</p></div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1079-1082"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90047-I","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12503771","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: 3
Migration of 210Po in lead to the surface 铅中的210Po向表面迁移
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90058-M
A. Zastawny, J. Białoń, T. Sosiński
{"title":"Migration of 210Po in lead to the surface","authors":"A. Zastawny,&nbsp;J. Białoń,&nbsp;T. Sosiński","doi":"10.1016/0883-2889(92)90058-M","DOIUrl":"10.1016/0883-2889(92)90058-M","url":null,"abstract":"<div><p>Measurements and analysis of the kinetics of the phenomenon of migration of polonium to the surface in lead are presented. Polonium atoms diffuse to surface because their thermodynamic potential on surface is lower than inside the lead of the raw production. The effect is very weak for the case of thermal diffusion at room temperature, but very strong when close-to-surface layer is plastically deformed for instance by cutting of the surface. After several vacuum-remelting processes all the effect decrease.</p></div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1147-1150"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90058-M","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79845730","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: 16
Facile oxygen-18 labelling of phosphate and its delabelling under various conditions 磷酸盐的简易氧-18标记及其在各种条件下的去标记
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90062-J
Victor Middelboe, Henrik Saaby Johansen
{"title":"Facile oxygen-18 labelling of phosphate and its delabelling under various conditions","authors":"Victor Middelboe,&nbsp;Henrik Saaby Johansen","doi":"10.1016/0883-2889(92)90062-J","DOIUrl":"10.1016/0883-2889(92)90062-J","url":null,"abstract":"","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1167-1168"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90062-J","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75338900","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 “RB” reactor uranium fuel enrichment verification by gamma-ray spectroscopy “RB”反应堆铀燃料浓缩的伽玛能谱验证
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90060-R
S. Avdić, M. Pešić
{"title":"The “RB” reactor uranium fuel enrichment verification by gamma-ray spectroscopy","authors":"S. Avdić,&nbsp;M. Pešić","doi":"10.1016/0883-2889(92)90060-R","DOIUrl":"10.1016/0883-2889(92)90060-R","url":null,"abstract":"<div><p>Gamma spectrometry analysis of natural and 2% enriched uranium metal fuel at the RB reactor was performed by germanium gamma spectrometer applying developed computer code ANA. Different samples of the RB reactor uranium fuel, placed at various distances from the Ge detector, were used during measurements. Gamma-ray self-absorption in the fuel material and the geometrical corrections were included in the calculation performed by computer code EFI based on a Monte Carlo method. Evaluated experimental data were used to determine branching ratio for the 1001 keV gamma line of <sup>234m</sup>Pa which is in equilibrium with <sup>238</sup>U. Obtained results were in good agreement with the results of other authors. Applied gamma spectrometry method is used for examination of the fresh fuel composition and validation of isotopic enrichment of the 2% enriched uranium fuel at the RB reactor.</p></div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1155-1157"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90060-R","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84193556","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
Initial evaluation of a Gaussian scatter correction technique 高斯散射校正技术的初步评价
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90054-I
M.S. Rosenthal , L.J. Henry
{"title":"Initial evaluation of a Gaussian scatter correction technique","authors":"M.S. Rosenthal ,&nbsp;L.J. Henry","doi":"10.1016/0883-2889(92)90054-I","DOIUrl":"10.1016/0883-2889(92)90054-I","url":null,"abstract":"<div><p>We have performed an initial evaluation of a new scatter correction algorithm, Gaussian Subtraction technique, for correction of SPECT images. This technique was evaluated by Monte Carlo simulations.</p><p>The Gaussian Subtraction technique uses a non-scatter (standard 20% energy window) and high energy windows. The window on the high energy side of the non-scattered peak is used to fit a Gaussian to the spectral peak. This technique directly determines the number of unscattered photon events detected by a gamma camera.</p><p>We find that this scatter correction technique can correct reasonably well (to within 10–15%) for scatter, for the simple phantom cases used here, using scatter windows &lt; ∼ 20 keV wide, for <sup>99m</sup>Tc. The Gaussian scatter technique does not require <em>a priori</em> knowledge of source distributions. Implementation of scatter correction would improve image contrast and quantitation in SPECT studies.</p></div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1123-1128"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90054-I","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88341757","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: 4
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