Prospects for multimodal visualisation of biological tissues using fluorescence imaging

D. K. Tuchina, I. G. Meerovich, O. A. Sindeeva, V. V. Zherdeva, N. I. Kazachkina, I. D. Solov'ev, A. P. Savitsky, A. A. Bogdanov, V. V. Tuchin

Research output: Contribution to journalReview articlepeer-review

4 Citations (Scopus)

Abstract

We investigate skin optical clearing in laboratory animals ex vivo and in vivo by means of low-molecular-weight paramagnetic contrast agents used in magnetic resonance imaging (MRI) and a radiopaque agent used in computed tomography (CT) to increase the sounding depth and image contrast in the methods of fluorescence laser imaging and optical coherence tomography (OCT). The diffusion coefficients of the MRI agents Gadovist®, Magnevist®, and Dotarem®, which are widely used in medicine, and the Visipaque® CT agent in ex vivo mouse skin, are determined from the collimated transmission spectra. MRI agents Gadovist® and Magnevist® provide the greatest optical clearing (optical transmission) of the skin, which allowed: 1) an almost 19-fold increase in transmission at 540 nm and a 7 - 8-fold increase in transmission in the NIR region from 750 to 900 nm; 2) a noticeable improvement in OCT images of skin architecture; and 3) a 5-fold increase in the ratio of fluorescence intensity to background using TagRFP-red fluorescent marker protein expressed in a tumour, after application to the skin of animals in vivo for 15 min. The obtained results are important for multimodal imaging of tumours, namely, when combining laser fluorescence and OCT methods with MRI and CT, since the contrast agents under study can simultaneously enhance the contrast of several imaging methods.

Original languageEnglish
Pages (from-to)104-117
Number of pages14
JournalQuantum Electronics
Volume51
Issue number2
DOIs
Publication statusPublished - Feb 2021
Externally publishedYes

Keywords

  • Contrast MRI and CT agents
  • CT
  • Ex vivo
  • In vivo
  • MRI
  • OCT
  • Optical clearing
  • Optical tomography
  • Skin of laboratory animals

Fingerprint

Dive into the research topics of 'Prospects for multimodal visualisation of biological tissues using fluorescence imaging'. Together they form a unique fingerprint.

Cite this