Erythrocytes labeled with [18F]SFB as an alternative to radioactive CO for quantification of blood volume with PET
Article first published online: 23 APR 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Contrast Media & Molecular Imaging
Volume 8, Issue 4, pages 375–381, July/August 2013
How to Cite
Herance, J. R., Gispert, J. D., Abad, S., Victor, V. M., Pareto, D., Torrent, È. and Rojas, S. (2013), Erythrocytes labeled with [18F]SFB as an alternative to radioactive CO for quantification of blood volume with PET. Contrast Media Mol Imaging, 8: 375–381. doi: 10.1002/cmmi.1533
- Issue published online: 23 APR 2013
- Article first published online: 23 APR 2013
- Manuscript Accepted: 7 JAN 2013
- Manuscript Revised: 29 OCT 2012
- Manuscript Received: 9 JUL 2012
- labeled erythrocytes;
- blood volume;
- isotopic ventriculography
Inhaled radioactive CO is currently the tracer of choice for blood volume quantification by positron emission tomography (PET). This measurement is of great interest for several clinical and research applications. However, owing to the short half-life of the radiolabeled CO, it can only be used in centers equipped with a cyclotron. In the present work, we propose an alternative method to label the red blood cells with [18F] in order to obtain blood volume measurements by PET. The use of the radioactive synthon [18F] N-succinimidyl 4-[18F]fluorobenzoate ([18F]SFB) was evaluated for erythrocyte labeling and PET blood volume imaging. The images provided by [18F]SFB labeled erythrocytes were compared with those obtained with inhaled [11C]CO. Blood volumes obtained with [18F]SFB labeled erythrocytes were similar to those obtained with [11C]CO in all of the evaluated organs with the exception of spleen, which presented lower uptake with this method. Since the [18F]-SFB binds irreversibly to red blood cells, in vivo stability of the radiolabel was higher compared with the [11C]CO method. Additionally, owing to the longer half-life and the shorter positron range of [18F], the image quality was also higher with the [18F]SFB radiolabeled erythrocytes. The labeling of red blood with [18F]SFB represents an advantageous alternative to radioactive CO for blood volume measurement by PET and cardiovascular isotopic imaging. Copyright © 2013 John Wiley & Sons, Ltd.