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KMID : 1148920200540020120
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Nuclear Medicine and Molecular Imaging
2020 Volume.54 No. 2 p.120 ~ p.122
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Renal Potassium Excretion Visualized on 82Rubidium PET/CT
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Jochumsen Mads Ryo
Tolbod Lars Poulsen
Borre Michael
Frokiaer Jorgen
Bouchelouche Kirsten
Sorensen Jens
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Abstract
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The positron emission tomography (PET) flow tracer 82Rubidium is a known potassium analogue. During our studies of tumor blood flow in prostate cancer, we found that approximately 10% of the patients had high urinary 82Rubidium activity. In roughly half of these patients, the increased renal rubidium/potassium excretion was either causing hypokalemia or explained by Thiazide treatment. In the other half, there was no obvious explanation or clinical consequence of the renal rubidium/potassium excretion. This is the first time enhanced renal potassium excretion is visualized on 82Rubidium PET/CT.
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KEYWORD
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82Rubidium, Hypokalemia, Potassium, Renal excretion, Prostate cancer, PET
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