Cervical spine: three-dimensional MR imaging with magnetization transfer prepulsed turbo field echo techniques.
In 11 volunteers, magnetic resonance (MR) imaging of the cervical spine was performed with a magnetization transfer preparatory pulse (prepulsed), three-dimensional Fourier transform, turbo field echo sequence. The effects of flip angle, number of shots, phase-encoding profile order, and magnetization transfer prepulse offset frequency on cerebrospinal fluid-to-cord contrast were evaluated. The contrast was improved by lowering the flip angle, increasing the number of shots, and implementing a magnetization transfer prepulse and linear phase-encoding profile order. Maximum myelographic effect was achieved with the magnetization prepulse (500-Hz frequency offset), 3 degrees flip angle, six shots, and linear phase-encoding profile order.
Melhem
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ER
Department of Radiology, Boston University Medical Center, MA 02118, USA.
Caruthers
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SD
Jara
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H
D000328:Adult; D002555:Cerebrospinal Fluid; D002574:Cervical Vertebrae / Q000033:anatomy & histology*; D005069:Evaluation Studies as Topic; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D008297:Male; D012016:Reference Values; D013116:Spinal Cord / Q000033:anatomy & histology