SINGLE-BREATH-HOLD VENOUS OR ARTERIAL FLOW SUPPRESSED PULMONARY VASCULAR MR-IMAGING WITH PHASED-ARRAY COILS

被引：17

作者：

FOO, TKF

MACFALL, JR

SOSTMAN, HD

HAYES, CE

机构：

[1] Applied Science Laboratory, GE Medical Systems, Waukesha, Wisconsin, 53188

[2] Department of Radiology., Duke University Medical Center, Durham, North Carolina

[3] Department of Radiology, University of Washington School of Medicine, Seattle

来源：

JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1993年 / 3卷 / 04期

关键词：

ARTIFACT; FLOW SUPPRESSION; PULMONARY ARTERIES; STENOSIS OR OBSTRUCTION; PULMONARY VEINS; PULSE SEQUENCES; RAPID IMAGING; VASCULAR STUDIES;

D O I：

10.1002/jmri.1880030410

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

A method for acquiring pulmonary vascular magnetic resonance (MR) images with either venous or arterial flow suppression is described. The proposed method only marginally increases the overall imaging time compared with conventional flow-suppression techniques. This enables an acquisition to be completed within a single breath hold with some selectivity as to flow direction. Instead of applying a spatially selective presaturation pulse before each radio-frequency (RF) excitation pulse, the flow presaturation pulse is applied once every 16-20 RF excitation pulses. To avoid image artifacts and to maintain a steady state, each presaturation pulse interval is followed by a normal imaging segment but with data acquisition turned off. Overall imaging time is increased by two TR intervals for each presaturation segment. For a 256 x 128 matrix acquisition, venous flow presaturation increases overall imaging time by approximately 14 TR intervals, while arterial flow suppression increases imaging time by 10 TR intervals.

引用

页码：611 / 616

页数：6

共 9 条

[1] Foo TKF, MacFall JR, Hayes CE, Sostman HD, Slayman BE, Pulmonary vasculature: single breath‐hold MR imaging with phased‐array coils, Radiology, 183, pp. 473-477, (1992)
[2] MacFall JT, Sostman HD, Foo TKF, Thick‐section, single breath‐hold magnetic resonance pulmonary angiography, Invest Radiol, 27, pp. 318-322, (1992)
[3] Wielopolski PA, Haacke EM, Adler LP, Three‐dimensional MR imaging of the pulmonary vasculature: preliminary experience, Radiology, 183, pp. 465-472, (1992)
[4] Felmlee JP, Ehman RL, Spatial presaturation: a method for suppressing flow artifacts and improving depiction of vascular anatomy in MR imaging, Radiology, 164, pp. 559-564, (1987)
[5] Keller PJ, Drayer BP, Fram EK, Williams KD, Domoulin CL, Souza SP, MR angiography with two‐dimensional acquisition and three‐dimensional display, Radiology, 173, pp. 527-532, (1989)
[6] Scheilbler M, Listerud J, Holland G, Foo TKF, Geftner WA, Single breath‐hold high resolution pulmonary MRA in patients with pulmonary emboli (abstr), Book of abstracts: Society of Magnetic Resonance in Medicine 1992, (1992)
[7] Roemer PB, Edelstein WA, Hayes CE, Souza SP, Mueller OM, The NMR phased array, Magn Reson Med, 16, pp. 192-225, (1990)
[8] Hayes CE, Hattes N, Roemer PB, Volume imaging with MR phased arrays, Magn Reson Med, 18, pp. 309-319, (1991)
[9] Pauley J, Le Roux P, Nishimura D, Macovski A, Parameter relations for the Shinnar‐Le Roux selective excitation pulse design algorithm, IEEE Trans Med Imaging, 10, pp. 53-65, (1991)

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