Impact of residual 18F-fluoride in 18F-FDOPA for the diagnosis of neuroblastoma
| Autor: | Ya-Yao Huang, Chien Chu Liu, Chyng Yann Shiue, Ching Hong Chiu, Yen Lin Liu, Kuang Hua Tang, Hsiang Ping Wen, Chia Ling Tsai, Kai-Yuan Tzen |
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| Rok vydání: | 2015 |
| Předmět: |
Male
Fluorine Radioisotopes Future studies Whole body imaging Bone Neoplasms Residual Multimodal Imaging Neuroblastoma chemistry.chemical_compound medicine Humans Whole Body Imaging Radiology Nuclear Medicine and imaging Child Oncogene Proteins Chromatography N-Myc Proto-Oncogene Protein medicine.diagnostic_test business.industry Infant Nuclear Proteins General Medicine Pet imaging medicine.disease Dihydroxyphenylalanine chemistry Positron emission tomography Child Preschool Positron-Emission Tomography Female Growth plates Radiopharmaceuticals Tomography X-Ray Computed Nuclear medicine business Fluoride Follow-Up Studies |
| Zdroj: | Annals of Nuclear Medicine. 29:489-498 |
| ISSN: | 1864-6433 0914-7187 |
| DOI: | 10.1007/s12149-015-0970-x |
| Popis: | PET imaging with (18)F-FDOPA has been successfully applied in the diagnosis and surveillance of neuroblastoma (NB) by targeting the overexpression of aromatic L-amino acid decarboxylase. This study aims to assess the impact of residual (18)F-fluoride on (18)F-FDOPA PET in NB and to implement a method to maintain low (18)F-fluoride content in future studies.Automatic synthesis of (18)F-FDOPA was based on the electrophilic method using TRACERlab FXFE module. Radio-TLC was employed to determine residual (18)F-fluoride levels. We analyzed the impact of residual (18)F-fluoride on the images of 35 patients undergoing (18)F-FDOPA PET at initial diagnosis and/or follow-ups of NB.In 35 batches of (18)F-FDOPA products from 9/28/2010 to 07/27/2011, the mean residual (18)F-fluoride level was 4.4 % (range 0.2-19.1 %). Residual (18)F-fluoride level ≥4.0 % was associated with dense uptake in the growth plates, skull, and pelvis on PET scans, which may interfere with the interpretation of (18)F-FDOPA imaging in NB. By applying stringent restraints in (18)F-FDOPA production, including regular renewal of reagents, exclusive use of NH4OH, and timely replacement of HPLC column, the incidence of (18)F-FDOPA batches with residual (18)F-fluoride level ≥4.0 % was reduced from 33 to 4 % (P 0.0001) during 7/30/2011-4/29/2013.By monitoring residual (18)F-fluoride levels and keeping stringent restraint procedures, low (18)F-fluoride content was achieved in most batches of (18)F-FDOPA, which diminished false-positive skeletal uptake. An appropriate upper limit of (18)F-fluoride level is suggested to be included in the criteria of routine quality control of (18)F-FDOPA productions. |
| Databáze: | OpenAIRE |
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