Advanced

AJNR - American Journal of Neuroradiology

This Article Abstract Full Text Full Text (PDF) Supplemental Material Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Dolar, M. T. Articles by Quigley, M. Search for Related Content PubMed PubMed Citation Articles by Dolar, M. T. Articles by Quigley, M.

Effect of Craniocervical Decompression on Peak CSF Velocities in Symptomatic Patients with Chiari I Malformation

Maria T. Dolar^a,*, Victor M. Haughton^a, Bermans J. Iskandar^b and Mark Quigley^c

^a Department of Radiology, University of Wisconsin, Madison, WI
^b Department of Neurosurgery, University of Wisconsin, Madison, WI
^c Department of Medical Physics, University of Wisconsin, Madison, WI

View larger version (19K): [in a new window]   FIG 1. Graph displaying the peak caudad and cephalad velocities (in cm/s) in the subarachnoid space of the foramen magnum in patients with a Chiari I malformation before and after suboccipital decompression. In most patients, the caudad (systolic) and cephalad (diastolic) velocities are diminished following surgery.

View larger version (32K): [in a new window]   FIG 2. Graph of the velocities (in mm/s) at each of 14 time points in the cardiac cycle in each voxel in the subarachnoid space for TC (left) and MS (right) before (top row) and after (bottom row) decompression of the craniocervical junction. Time courses of voxels in the anterior subarachnoid space are colored red, and those in the posterior subarachnoid space colored green. Note that the velocities in a cephalad direction (positive values) are reduced following decompression. Velocities in the anterior subarachnoid space are more affected than those in the posterior subarachnoid space.