INTRACRANIAL HEMORRHAGE - GRADIENT-ECHO MR IMAGING AT 1.5-T - COMPARISON WITH SPIN-ECHO IMAGING AND CLINICAL-APPLICATIONS
INTRACRANIAL HEMORRHAGE - GRADIENT-ECHO MR IMAGING AT 1.5-T - COMPARISON WITH SPIN-ECHO IMAGING AND CLINICAL-APPLICATIONS
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DOI：
10.1148/radiology.168.3.3406410
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发表时间：
1988-09-01
期刊：
影响因子：
19.7
通讯作者：
GOMORI, JM
中科院分区：
文献类型：
--
作者：
ATLAS, SW;MARK, AS;GOMORI, JM
对57例颅内出血性病变患者进行了1.5T磁共振成像检查，同时使用自旋回波（SE）和梯度回波采集（GEA）技术，以评估GEA在高场强下评估颅内出血的临床应用和局限性。所有GEA图像均以长回波时间和短翻转角获得，以强调基于T2* 的对比度。在61例中，30例GEA图像比SE图像显示更多的出血性病变。在61例中，14例GEA图像未能显示病变或模糊了具体的诊断（如SE MR成像所示）。作者认为，目前形式的GEA成像在高场强下对颅内出血的评价具有有限但明确的指导作用。
Fifty-seven patients with hemorrhagic intracranial lesions were examined with magnetic resonance (MR) imaging at 1.5 T with use of both spin-echo (SE) and gradient-echo-acquisition (GEA) techniques to assess the clinical applications and limitations of GEA in evaluation of intracranial hemorrhage at high field strength. All GEA images were obtained with a long echo time and short flip angle to emphasize T2*-based contrast. In 30 of 61 cases, GEA images demonstrated more hemorrhagic lesions than SE images. In 14 of 61 cases, GEA images failed to depict the lesion or obscured the specific diagnosis (as depicted by SE MR imaging). The authors believe that GEA imaging in its current form has a limited but definite adjunctive role in the evaluation of intracranial hemorrhage at high field strength.