Technique for acquiring MR images of CSF flow during a Valsalva maneuver
Haughton V, Mistretta C, Wentland A, Korosec F, Wieben O
University of Wisconsin
Some Chiari I patients exhibit Valsalva-induced headaches. Hypothetically, the Valsalva maneuver creates CSF flow abnormalities. We have used an undersampled phase contrast projection reconstruction (PR PC) technique for evaluating CSF flow within the time span of a Valsalva maneuver in volunteers and Chiari I patients. Data have shown a significant increase in CSF flow in patients during a Valsalva maneuver but not in volunteers.