Publications | Site Map     Research Surgery Critical Care Hemodialysis Radiology OEM About Contact FAQ's             Probe Placements Flow-Assisted Aneurysm Surgery Courtesy F.T. Charbel, MD, Associate Professor, Dept. of Neurosurgery University of IL at Chicago   Aneurysm Location Probe Placement Technical Recommendations MCA M2 outlet vessels A relatively straightforward case for the surgeon and one of the easiest places to position a flowprobe. Carotid Bifurcation MCA and/or ACA The technical challenge is to preserve flow in the M1 and A1 outlet vessels. Flow in the ICA can also be checked. Carotid - Ophthamic MCA and/or ACA, ICA Flow must be preserved in the ICA and M1 and A1 outlet vessels. Usually large aneurysms with no proximal control. Anterior Communicating Ipsilateral A1 (and/or Contraleteral), both A2s. High Risk. The technical challenge is to preserve flow in the A2 outlet vessels. No change in both A2s indicates that flow is fully preserved. One A1 usually predominates and feeds both vessels. Basilar Tip Ipsilateral P2 and SCA, Pcom (prelude to sacrifice) The perforators will still need to be inspected. Superior Cerebellar Artery Ipsilateral SCA and PCA Check flow in the ipsilateral SCA and PCA. Posterior Communicating MCA and ACA, ICA This is the one location where the probe might not be used because the surgeon may only expose the carotid and the aneurysm. Posterior Inferior Communicating Proximal or distal VA and/or PICA Check the PICA and VA. Anterior Choroidal MCA and ACA, ICA, Anterior Choroidal Flow in the anterior choroidal is particularly important. The 1.5 mm probe is good for this vessel.         Start receiving our Flow Matters™ Newsletter.             Print Page View Catalog          Surgery | Critical Care | Research | Hemodialysis | OEM | Publications | Customer Service      ©2007 Transonic Systems Inc.  All rights Reserved. Privacy Statement