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The clinical safety, biodistribution and internal radiation dosimetry of [F-18]fluciclovine in healthy adult volunteers
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Radiology, Oncology and Radiation Science, Section of Nuclear Medicine and PET.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Radiology, Oncology and Radiation Science, Oncology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Radiology, Oncology and Radiation Science, Section of Nuclear Medicine and PET.
2013 (English)In: European Journal of Nuclear Medicine and Molecular Imaging, ISSN 1619-7070, E-ISSN 1619-7089, Vol. 40, no 8, 1256-1264 p.Article in journal (Refereed) Published
Abstract [en]

We report on the biodistribution and internal radiation dosimetry in humans of [F-18]fluciclovine, a synthetic L-leucine analogue being investigated as a potential diagnostic biomarker for neoplasia. Whole-body positron emission tomography (PET) scans of 6 healthy volunteers were acquired at up to 16 time points up to about 5 h after a bolus administration of [F-18]fluciclovine (153.8 +/- 2.2 MBq). Venous blood samples were taken up to about 4 h post-injection from which F-18 activity concentrations in whole blood and plasma were measured. Urine was collected as voided up to 4 h post-injection, from which the excreted F-18 activity was measured. Absolute values of the F-18 activity contained in up to 11 source regions (brain, salivary glands, lung, heart, pancreas, spleen, liver, red bone marrow, kidneys, uterus and urinary bladder contents) were determined directly from quantitative analysis of the images. For each source region, the F-18 activity decay-corrected and normalised to that injected, as a function of time, was fit by an analytical function which was subsequently integrated to yield the cumulated activity normalised to the injected activity. These normalised cumulated activities were then used as input to the Organ Level INternal Dose Assessment/EXponential Modelling (OLINDA/EXM) package to calculate the internal radiation dosimetry of each subject following the Medical Internal Radiation Dose (MIRD) schema. An effective dose was then estimated for each subject. [F-18]Fluciclovine was clinically well tolerated in this study. Very little F-18 was excreted with only a mean value of 3.3 % present in the urine at about 4 h post-injection; no activity within the intestinal contents was noted. The highest mean initial uptakes were measured in the liver (13.8 %), red bone marrow (11.1 %) and lung (7.1 %). The highest mean radiation absorbed doses per unit administered activity were received by the pancreas (102.2 mu Gy/MBq), the cardiac wall (51.7 mu Gy/MBq) and the uterine wall (44.6 mu Gy/MBq). The mean effective dose per unit administered activity was 22.1 mu Sv/MBq. The internal radiation dosimetry of [F-18]fluciclovine appears acceptable for PET imaging.

Place, publisher, year, edition, pages
2013. Vol. 40, no 8, 1256-1264 p.
Keyword [en]
Clinical safety, Biodistribution, Internal radiation dosimetry, [F-18]Fluciclovine
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-204838DOI: 10.1007/s00259-013-2403-1ISI: 000321521000016OAI: oai:DiVA.org:uu-204838DiVA: diva2:640319
Available from: 2013-08-13 Created: 2013-08-12 Last updated: 2017-12-06Bibliographically approved

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Wall, AndersJohansson, SilviaSörensen, Jens

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