In vivo measurement of [11C]verapamil kinetics in human tissues

N. H. Hendrikse, E. G.E. De Vries, E. J.F. Franssen, W. Vaalburg, W. T.A. Van Der Graaf

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Objectiva: To evaluate [11C]verapamil kinetics in humans. Methods: After intravenous injection of [11C]verapamil (370 MBq, specific activity >1600 GBq/mmol), kinetics were evaluated in five cancer patients using positron emission tomography (PET). Results: One hour after injection, accumulation of [11C] in lungs, heart and tumour was 43.0%, 1.3% and 0.9% of the injected verapamil dose, respectively. Half-lives of [11C]verapamil in these tissues were 46.2 min, 73.8 min and 23.7 min, respectively. Conclusions: Intravenously administered [11C] was mainly extracted by the lungs. Transport of a [11C]verapamil bolus out of solid tumour tissue is relatively fast.

Original languageEnglish
Pages (from-to)827-829
Number of pages3
JournalEuropean journal of clinical pharmacology
Issue number11
Publication statusPublished - 1 Dec 2001


  • Lung extraction
  • Positron emission tomography
  • [C]verapamil kinetics

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