发明名称 |
CONTRAST-ENHANCED MRA INCLUDING AN EFFECTIVE ZERO-LATENCY METHOD OF BOLUS DETECTION |
摘要 |
To generate a magnetic resonance angiograph, a patient is injected with a contrast-enhancing agen (210). An ellipsoidal central portion of k-space (300) and a first surrounding region (310) are continuously sampled (220). A portion of each central data set (300, 310) is reconstructed (230) into a low-resolution volume and mximum-intensity-projected (240) onto a line. The maximum-intensity projection (240) is processed (250) in order to detect the arrival of the contrast enhancing bolus within a volume of interest. Upon detection of the arrival of the bolus, the acquisition of a high-resolution magnetic resonance angiograph is triggered (260) in which higher phase encode portions (310, 420) of k-space are sampled. The central data set (300) along with the higher phase encode views (310, 420) are reconstructed (290) into a high-resolution magnetic resonance angiogram. The present technique allows for substantially zero latency between the detection of the contrast-enhancing agent bolus and the acquisition of the magnetic resonance angiogram. |
申请公布号 |
WO02057803(A2) |
申请公布日期 |
2002.07.25 |
申请号 |
WO2001US49979 |
申请日期 |
2001.11.07 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
ANAND, CHRISTOPHER, K.;MARGOSIAN, PAUL, M.;THOMPSON, MICHAEL, R. |
分类号 |
G01R33/28;G01R33/561 |
主分类号 |
G01R33/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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