Comparison of whole body 131Iodine scan results in four, seven and nine days after radio-iodine therapy of differentiated thyroid cancer

Aryana, Kamran and Ramezani, Mohammad and Zakavi, Seyed Rasoul and Aghaee, Atena (2019) Comparison of whole body 131Iodine scan results in four, seven and nine days after radio-iodine therapy of differentiated thyroid cancer. Journal of Patient Safety & Quality Improvement, 7 (2). pp. 52-55.

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Abstract

Introduction: Finding optimum time of post ablation whole body iodine scan in patients with differentiated thyroid cancer(DTC) treated with I-131.Material and Methods: 20 patients with DTC, who were treated with I131 underwent post ablation whole body iodine scan (WBIS) in days 4, 7 and 9 after treatment. A dual head gamma camera (e-cam, Siemens) equipped with high energy parallel hole collimator was used for imaging. The images were acquired with 7cm/min and stored in a 1024 ×256 matrix. Results: 3 Patients had negative WBIS in all three sets of imaging and 17 patients had postsurgical thyroid remnants on all 3 scans. On days 4 and 7 we detected 11 patients with cervical lymph node metastases while on day 9 only 9 patients showed cervical lymph node metastases.(P=0.135)On all 3 sets of images, we encountered 4 patients with mediastinal lymph node metastases and 1 patient with bone metastasis. In addition, all 3 sets of images detected lung metastases in three patients. The total number of affected foci did not have any statistical differences in whole body scan of day 4, 7 and 9. (P = 0.083)Conclusion: According to the radiation safety hazards for staff and technicians of nuclear medicine department and lack of difference in scan findings between 4 and 7 days after RAI, scanning the DTC patients in the day 7 after RAI administration , is more practicable, with less probability of missing the sites of involvement. Performing whole body iodine scans after 1 week is not recommended.

Item Type: Article
Subjects: WN Radiology . Diagnostic Imaging
Divisions: Journals > J Patient Safety & Quality improvement
Depositing User: psj psj
Date Deposited: 08 Jun 2019 06:32
Last Modified: 08 Jun 2019 06:32
URI: http://eprints.mums.ac.ir/id/eprint/11503

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