Radiofrequency saturation induced bias in aqueductal cerebrospinal fluid flow quantification obtained using two‐dimensional cine phase contrast magnetic resonance imaging

2017 ◽  
Vol 79 (4) ◽  
pp. 2067-2076 ◽  
Author(s):  
Sudarshan Ragunathan ◽  
James G. Pipe
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cerebrospinal Fluid ◽  
Fluid Flow ◽  
Phase Contrast ◽  
Flow Quantification ◽  
Two Dimensional ◽  
Resonance Imaging ◽  
Cerebrospinal Fluid Flow ◽  
Contrast Magnetic Resonance ◽  
Cine Phase Contrast

Quantitative Assessment of Surgical Decompression of the Cervical Spine with Cine Phase Contrast Magnetic Resonance Imaging

Neurosurgery ◽  
2002 ◽  
Vol 50 (4) ◽  
pp. 791-796 ◽  
Author(s):  
Teiji Tominaga ◽  
Noriaki Watabe ◽  
Toshiyuki Takahashi ◽  
Hiroaki Shimizu ◽  
Takashi Yoshimoto
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cerebrospinal Fluid ◽  
Flow Velocity ◽  
Phase Contrast ◽  
Resonance Imaging ◽  
Cerebrospinal Fluid Flow ◽  
Contrast Magnetic Resonance Imaging ◽  
Phase Contrast Magnetic Resonance ◽  
Contrast Magnetic Resonance ◽  
Cine Phase Contrast

Abstract OBJECTIVE: We measured cerebrospinal fluid flow velocity by use of cine phase contrast magnetic resonance imaging to quantitate the effectiveness of surgical decompression in patients with cervical myelopathy. METHODS: Forty-seven patients with cervical myelopathy attributable to either spondylosis or ossification of the posterior longitudinal ligament were studied. Thirty-five patients underwent anterior cervical decompression and fusion; 12 others underwent expansive laminoplasty. Patients were examined preoperatively and postoperatively by use of a 1.5-T scanner with a pulse-gated cine phase contrast sequence. Cerebrospinal fluid flow direction and velocity in the ventral subarachnoid space were determined at the C1 and T1 levels. Forty-four healthy control subjects were examined to determine normal flow velocity parameters. Severity of cervical myelopathy was evaluated preoperatively and postoperatively by use of Japan Orthopedic Association scores to calculate the extent of recovery. RESULTS: Preoperatively, cerebrospinal fluid flow velocity in the caudal direction was significantly lower at both C1 and T1 than velocities measured in healthy controls. Both decompressive procedures essentially returned patient velocities to control values. Clinical recovery from myelopathy did not differ between anterior and posterior decompression. Postoperative increase in flow velocity correlated with clinical recovery after posterior (P < 0.0008) but not anterior decompression. CONCLUSION: Cine phase contrast magnetic resonance imaging provides quantitative assessment of cervical spine decompression, with particularly good clinical applicability to posterior procedures.

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