NMR venography using the susceptibility effect produced by deoxyhemoglobin.
A new angiography technique using the susceptibility effect is proposed. Blood containing deoxyhemoglobin is more paramagnetic than surrounding tissue and thereby produces a susceptibility effect at blood-tissue interfaces. By use of a specially tailored RF pulse, signals from normal tissues are suppressed while the signals from blood interfaces, where strong susceptibility-induced fields are created, are enhanced. The design and characteristic behavior of the tailored RF pulse are discussed and experimental results obtained using both a phantom and a human volunteer with a 2.0-T whole-body NMR system are also presented.
Cho
Z H
ZH
Department of Electrical Science, Korea Advanced Institute of Science, Seoul.
Ro
Y M
YM
Lim
T H
TH
D001808:Blood Vessels / Q000033:anatomy & histology*; D003198:Computer Simulation; D006454:Hemoglobins / Q000378:metabolism*; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008961:Models, Structural; D012815:Signal Processing, Computer-Assisted
D006454:Hemoglobins; C100003:deoxyhemoglobin