Shelton C, Harnsberger H R, Allen R, King B
Division of Otolaryngology, University of Utah School of Medicine, Salt Lake City, USA.
Otolaryngol Head Neck Surg. 1996 Jan;114(1):71-6. doi: 10.1016/S0194-59989670286-3.
The advent of magnetic resonance imaging has greatly improved our ability to diagnose acoustic tumors, but it is a relatively expensive imaging modality. In the present climate of medical cost restraints, methods that reduce costs but maintain quality are extremely desirable. We report a new magnetic resonance imaging technique that uses fast spin echo without gadolinium. It provides ultrahigh-resolution images of the internal auditory canal and cerebellopontine angle. The sensitivity of this technique for the detection of acoustic tumors is equivalent to conventional gadolinium-enhanced magnetic resonance imaging, but the global cost is comparable with that of brain stem audiometry. In our practice fast spin echo magnetic resonance imaging has replaced brain stem audiometry as a screening modality to evaluate most acoustic tumor suspects. Also, the intricate detail of the internal auditory canal anatomy provided by this technique is useful in planning surgical removal of acoustic tumors.
磁共振成像的出现极大地提高了我们诊断听神经瘤的能力，但它是一种相对昂贵的成像方式。在当前医疗成本受限的环境下，降低成本同时保持质量的方法非常值得期待。我们报告了一种新的磁共振成像技术，该技术使用快速自旋回波且不使用钆。它能提供内耳道和桥小脑角的超高分辨率图像。该技术检测听神经瘤的灵敏度与传统钆增强磁共振成像相当，但总体成本与脑干听觉测定法相当。在我们的实践中，快速自旋回波磁共振成像已取代脑干听觉测定法，作为评估大多数疑似听神经瘤的筛查方式。此外，该技术提供的内耳道解剖结构的精细细节，有助于规划听神经瘤的手术切除。
