Asia Oceania Journal of Nuclear Medicine and Biology

Asia Oceania Journal of Nuclear Medicine and Biology

Subcutaneous Extravasation of Sr-89: Usefulness of Bremsstrahlung Imaging in Confirming Sr-89 Extravasation and in the Decision Making for the Choice of Treatment Strategies for Local Radiation Injuries Caused by Sr-89 Extravasation

Document Type : Case report

Authors
Joji Kawabe 1
Shigeaki Higashiyama 1
Kohei Kotani 1
Atsushi Yoshida 1
Hiroyuki Tsushima 2
Takashi Yamanaga 3
Daisuke Tsuruta 4
Susumu Shiomi 1
1 Department of Nuclear Medicine, Graduate School of Medicine, Osaka City University, Japan
2 Department of Radiological Sciences, Ibaraki Prefectural University of HealthSciences, Japan
3 Department of Radiology, Osaka City University Hospital, Japan
4 Deaprtment of Dermatology, Graduate School of Medicine, Osaka City University, Japan
10.7508/aojnmb.2013.02.009
Abstract
A male patient in his 20s presented at our clinic with pain caused by bone metastases of the primitive neuroectodermal tumor, and Sr-89 was administrated to palliate the pain. After receiving the injection, the patient complained of a slight burning pain at the catheterized area. Slight reddening and small circular swelling (diameter, 0.5 cm) were observed at the catheterized area. Sr-89 extravasation was suspected. To estimate the amount of subcutaneous Sr-89 leakage, bremsstrahlung imaging was immediately performed. We speculated that the skin-absorbed dose from the subcutaneous Sr-89 leakage was 1.78 Gy. The mildest clinical sign of local radiation injury was erythema. The received dose was higher than 3 Gy, and the time of onset was from 2 to 3 weeks. In our patient, local radiation injuries (LRIs) did not occur. Though requiring further verification, subsequent bremsstrahlung imaging and estimation of the skin-absorbed dose from the subcutaneous Sr-89 leakage are useful in confirming Sr-89 extravasation and in the decision making for the choice of treatment strategies for LRIs caused by Sr-89 extravasation.
Keywords
Sr-89
Extravasation
local radiation injury
Bremsstrahlung imaging
Subjects
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Asia Oceania Journal of Nuclear Medicine and Biology
Volume 1, Issue 2 - Serial Number 2
October 2013
Pages 56-59