Iodine-124: A Promising Positron Emitter for Organic PET Chemistry

Molecules

Lena Koehler¹  Katherine Gagnon¹  Steve McQuarrie¹ 

[1] ¹Institute of Radiopharmacy, Research Center Dresden-Rossendorf, Dresden, Germany ²Department of Physics, University of Alberta, Edmonton, Canada ³Department of Oncology, University of Alberta, Edmonton, Canada These two authors contributed equally to this work.

关键词: iodine-124;    positron emission tomography (PET);    molecular imaging;   

DOI  :  10.3390/molecules15042686

来源: mdpi

【 摘 要 】

The use of radiopharmaceuticals for molecular imaging of biochemical and physiological processes in vivo has evolved into an important diagnostic tool in modern nuclear medicine and medical research. Positron emission tomography (PET) is currently the most sophisticated molecular imaging methodology, mainly due to the unrivalled high sensitivity which allows for the studying of biochemistry in vivo on the molecular level. The most frequently used radionuclides for PET have relatively short half-lives (e.g. ¹¹C: 20.4 min; ¹⁸F: 109.8 min) which may limit both the synthesis procedures and the time frame of PET studies. Iodine-124 (¹²⁴I, t_1/2 = 4.2 d) is an alternative long-lived PET radionuclide attracting increasing interest for long term clinical and small animal PET studies. The present review gives a survey on the use of ¹²⁴I as promising PET radionuclide for molecular imaging. The first part describes the production of ¹²⁴I. The second part covers basic radiochemistry with ¹²⁴I focused on the synthesis of ¹²⁴I-labeled compounds for molecular imaging purposes. The review concludes with a summary and an outlook on the future prospective of using the long-lived positron emitter ¹²⁴I in the field of organic PET chemistry and molecular imaging.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.