Differentiation of Brain Tumor Microvasculature From Normal Vessels Using Optical Coherence Angiography

Farah Andleeb, Nitesh Katta, Aleksandra Gruslova, Bharadwaj Muralidharan, Arnold Estrada, Austin B. McElroy, Hafeez Ullah, Andrew J. Brenner, Thomas E. Milner

Research output: Contribution to journalArticlepeer-review

Abstract

Background and Objectives: Despite rapid advances and discoveries in medical imaging, monitoring therapeutic efficacy for malignant gliomas and monitoring tumor vasculature remains problematic. The purpose of this study is to utilize optical coherence angiography for vasculature characterization inside and surrounding brain tumors in a murine xenograft brain tumor model. Features included in our analysis include fractional blood volume, vessel tortuosity, diameter, orientation, and directionality. Study Design/Materials and Methods: In this study, five tumorous mice models at 4 weeks of age were imaged. Human glioblastoma cells were injected into the brain and allowed to grow for 4 weeks and then imaged using optical coherence tomography. Results: Results suggest that blood vessels outside the tumor contain a greater fractional blood volume as compared with vessels inside the tumor. Vessels inside the tumor are more tortuous as compared with those outside the tumor. Results indicate that vessels near the tumor margin are directed inward towards the tumor while normal vessels show a more random orientation. Conclusion: Quantification of vascular microenvironments in brain gliomas can provide functional vascular parameters to aid various diagnostic and therapeutic studies.

Original languageEnglish (US)
JournalLasers in Surgery and Medicine
DOIs
StateAccepted/In press - 2021

Keywords

  • angiogenesis
  • blood vessels
  • microenvironment
  • tumor

ASJC Scopus subject areas

  • Surgery
  • Dermatology

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