Рентгенология & Радиология, 2011, XLХ 258-270

Problems of fluorescent imaging and its solution using nanofluorophores
Part I: Advantages of fluorescent nanoparticles
over conventional organic fluorophores
Z. Zhelev, G. Hadjidekov, G. Zlateva, L. Spasov, R. Bakalova

Abstract.

The application of fluorescence in deep-tissue imaging is rapidly expanding in last several years. The progress in fluorescent molecular probes and fluorescent imaging techniques gives an opportunity to detect single cells and even molecules in live organisms. The highly sensitive and highspeed fluorescent molecular sensors and detection devices allow the application of fluorescence in functional imaging. With development of novel bright fluorophores based on nanotechnologies and fluorescence scanners with high spatial and temporal resolution, the fluorescent imaging has a potential to become an alternative of the other non-invasive imaging techniques as magnetic resonance imaging, positron-emission tomography, X-ray, computing tomography. This review outlines the current status and future trends of fluorescent nanoparticles – quantum dots (QDs), as a new generation of fluorophores in experimental and pre-clinical fluorescent imaging diagnostic. Part 1 focuses on the advantages of quantum dots over conventional organic fluorophores and defines the major requirements to the “perfect” fluorophore for fluorescent deep-tissue imaging diagnostic. The analysis is based on the limitations of fluorescent imaging in vivo and overcome by using quantum dots.

Key words:  MOLECULAR IMAGING DIAGNOSTIC. FLUORESCENT IMAGING DIAGNOSTIC. NANOPARTICLES