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Clinical Trial Summary

The main objective of the study is to evaluate the efficacy of indocyanine green (ICG) endoscopy to evaluate tissue perfusion during endoscopic neurosurgery. This includes patients with pituitary and intracranial tumors and treatment of vascular abnormalities such as aneurysms and compressive syndromes. ICG will be evaluated to determine the value of the additional visual information supplied during the treatment of these pathologies.


Clinical Trial Description

Over the past decade, a technique widely used by ophthalmologists to assess retinal blood flow, near-infrared ICG angiography, has been applied to neurosurgical patients undergoing a wide variety of cerebrovascular procedures. This technique offers the advantage of real-time visualization of cerebral blood flow through the operating microscope at the time the procedure is being performed. Indocyanine green is an ideal agent for imaging vessels as it is tightly bound to plasma albumin, has a short half-life, and maintains an acceptable safety profile. Furthermore, the excitation and emission profiles for ICG lie in the near-infrared wavelengths, which allow penetration and imaging of vessels below a few millimeters of tissue.

Patients with either an aneurysm, compressive syndromes or pituitary and intracranial tumor will be enrolled in the study. By taking advantage of the natural fluorescence of indocyanine green (ICG) within the red spectrum and applying a light filter to the endoscope eyepiece and camera it will show as to whether this technique provides adequate visual information to differentiate perfusion in tumor and surrounding structures and to evaluate normal vessels for aneurysm and compressive syndromes procedures. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02383628
Study type Observational
Source University of Pittsburgh
Contact
Status Completed
Phase
Start date October 2015
Completion date June 2018

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