RT Journal Article SR Electronic T1 Inadvertent Intraarterial Injection of 18F-FDG: A Case Report and Literature Review of Hot Forearm and Hot Hand Signs JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 249 OP 251 DO 10.2967/jnmt.111.089011 VO 39 IS 4 A1 Zhaohui Zhu A1 Mohan Doss A1 Huangying Tan A1 Steven Feigenberg A1 Jian Q. Yu YR 2011 UL http://tech.snmjournals.org/content/39/4/249.abstract AB Unintentional intraarterial injection of radiotracers may cause artifacts leading to difficulties in accurately interpreting PET/CT images. We report a case of a 73-y-old man with a history of metastatic colon cancer who underwent a PET/CT scan for restaging. In the PET scan, there was intense and diffuse distribution of 18F-FDG in his left forearm and hand. This is a classic sign of an accidental intraarterial injection of 18F-FDG in the antecubital region. Similar phenomena after inadvertent intraarterial injection of other radiotracers are reviewed. The associated risk factors, preventive measures, and radiation dose to the arm are discussed.