Broda R, Dziel T, Muklanowicz A, Listkowska A, Pieńkowski Ł, Patocka A, Kołakowska E
Laboratory of Radioactivity Standards, Institute of Atomic Energy POLATOM Radioisotope Centre, Swierk, Poland.
Appl Radiat Isot. 2010 Jul-Aug;68(7-8):1278-81. doi: 10.1016/j.apradiso.2009.11.017. Epub 2009 Nov 13.
The Radioisotope Centre (RC) has organized for the first time in Polish hospitals a comparison of activity measurements of (99)Tc(m) and (131)I. From the 58 Polish hospitals invited, 37 participated in the comparison. Each participant got about 4 mL of (99)Tc(m) eluate and two (131)I capsules, low- and high-activity. Sources were standardized in the RC before dispatch using a 4pi ionization chamber calibrated by standard solutions. Participants used their own radionuclide calibrators. The measurement results were evaluated using the E(n) criterion and the z'-score. From all 118 measurement results received from participants, 75 results (64%) lay within +/-5% of the RC value, and 99 results (84%) lay within +/-10.0%.
放射性同位素中心（RC）首次在波兰医院组织了锝-99m（99Tc(m)）和碘-131（131I）活度测量的比对。在受邀的58家波兰医院中，37家参与了此次比对。每位参与者获得了约4毫升的99Tc(m)洗脱液以及两粒131I胶囊，分别为低活度和高活度的。在分发之前，源在放射性同位素中心使用由标准溶液校准的4π电离室进行了标准化。参与者使用他们自己的放射性核素校准仪。测量结果使用E(n)准则和z'分数进行评估。从参与者收到的所有118个测量结果中，75个结果（64%）在放射性同位素中心值的±5%范围内，99个结果（84%）在±10.0%范围内。
