• Biological Half-Life: 24 hours* • Effective Half-Life: 4.8 hours* * These are “generic” biological and effective half-lives; the specific labeled compound may alter.• Specific Activity: 5.3 x 106 Ci/gram 1.95 x 1017 Bq/g • Specific Gamma Constant:(@...
The half-life of ~(99m)Tc in various chemical conditions has been measured precisely. The ~(99m)Tc was produced by the reaction of ~(100)Mo(γ, n)~(99)Mo, followed by disintegration to ~(99m)Tc. The half-life of ~(99m)Tc was determined within the good precision of the ...
有效半减期(effective half life)指生物体内的放射性核素由于从体内排出和物理衰变两个因素作用,减少至原有放射性活度的一半所需的时间(Teff ) 临床最常用的肿瘤非特异性显像剂 201Tl与99mTc-MIBI 67Ga 脑血流灌注显像剂有哪几种 99mTc-ECD(99mTc-双胱乙酯)或99mTc-HMPAO(99Tcm-六甲基丙烯胺肟) ...
Tc-99m's half life of 6.0058 hours is considerably longer (by 14 orders of magnitude, at least) than most nuclear isomers, though not unique. This is still a short half-life relative to many other known modes of radioactive decay, and it is in the middle of the range of...
Tc-99m's half life of 6.0058 hours is considerably longer (by 14 orders of magnitude, at least) than most nuclear isomers, though not unique. This is still a short half-life relative to many other known modes of radioactive decay, and it is in the middle of the range of half lives...
In conclusion, 99Tcm HMPAO seems to be a promising platelet label for imaging thrombotic lesions but not for platelet-survival studies because of the short physical half-life of 99Tcm. 展开 DOI: 10.1097/00006231-198810000-00024 被引量: 7 ...
The Tc-99m RBC method was first described in 1979. The major advantage over Tc-99 sulfur colloid is that imagescan be acquired for a longer length of time, limited only by the physical half-life of Tc-99m and the stability of the radiolabel, thus usually up to 24 hours....
(mCi/g). and a conveniently rapid rate of decay, whereas its daughter product, Tc-99m, has a specific activity which is almost nine orders of magnitude lower and a half life which is roughly eight orders of magnitude longer. For the organism being studied or diagnosed the slow rate of ...
半衰期Technetium Tc 99m decays by isomeric transition with a physical half-life of 6.02 hours. 清除Following intravenous administration in normal subjects, Technetium Tc 99m Mebrofenin was rapidly cleared from the circulation. ATC代码V09DA04
The radioactive half-life of the Tc-99m nm is of 6 hours. It is important to consider this short half-life as the use of this agent should be done within the active time.5Tc-99m nm presents a serum half-life of 1.5 hours and an elimination phase half-life of 10.5 hours.7 ...