Article Text

Download PDFPDF
Case report
Republished: Intracavitary ultrasound (ICARUS): a neuroendoscopic adaptation of intravascular ultrasound for intracerebral hemorrhage evacuation
  1. Alexander G Chartrain,
  2. Danny Hom,
  3. Joshua B Bederson,
  4. J Mocco,
  5. Christopher Paul Kellner
  1. Department of Neurosurgery, Icahn School of Medicine atMount Sinai, New York, NY, USA
  1. Correspondence to Dr Christopher Paul Kellner, The Mount Sinai Health System, New York, NY 10029, USA; christopher.kellner{at}


Neurosurgeons performing intracerebral hemorrhage evacuation procedures have limited options for monitoring hematoma evacuation and assessing residual hematoma burden intraoperatively. Here, we report the successful neuroendoscopic adaptation of intravascular ultrasound, referred to here as intracavitary ultrasound (ICARUS), in two patients. Pre-evacuation ICARUS demonstrated dense hematomas in both patients. Post-evacuation ICARUS in patient 1 demonstrated significant reduction in clot burden and two focal hyperechoic regions consistent with pockets of hematoma not previously seen with the endoscope or burr hole ultrasound. These areas were directly targeted and resected with the endoscope and suction device. Post-evacuation ICARUS in patient 2 showed significant reduction of hematoma volume without indication of residual blood. ICARUS findings were confirmed on intraoperative DynaCT and postoperative CT 24 hours later. ICARUS is feasibly performed in a hematoma cavity both before and after hematoma aspiration. ICARUS may provide additional information to the operating surgeon and assist in maximizing hematoma removal.

  • hemorrhage
  • endoscopy
  • ultrasound

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.


  • Republished with permission from BMJ Case Reports Published 13 October 2017; doi:10.1136/bcr-2017-013188

  • Contributors All authors contributed to the manuscript through manuscript composition and/or critical review. All authors provided final approval for publication.

  • Funding This paper was supported in part by a grant from Arminio and Lucyna Fraga and a grant from Mr. and Mrs. Durkovic.

  • Competing interests None declared.

  • Patient consent Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.