Zhang Li-chun, Hong Ru-jian, Dai Chun-fu, Chi Fang-lu, Sha Yan
Department of Radiology, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China.
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2009 Sep;44(9):736-8.
To evaluate the clinical application of multi-planar reformation (MPR) for the diagnosis of superior semicircular canal dehiscence syndrome.
A retrospective study was conducted on 9 patients who were diagnosed with SSCD syndrome in the Otology and Skull Base Surgery group of Fudan University. Three radiologists analyzed all the patients' 0.75 mm-collimated axial and coronal images and 0.75 mm-collimated MPR images, and they came up with the same results.
There were 18 superior semicircular canal in the 9 patients, of whom 9 were intact and 9 were defective. All the defective superior semicircular displayed a definite dehiscence in all the MPR images, which indicated the sensitivity was 100%; however, 7 of the 9 defective superior semicircular canal were diagnosed as dehiscence in axial images, while 8 of the 9 were diagnosed in coronal images, but the sensitivities were 77.8% and 88.9% respectively. The results of the other 9 with intact superior semicircular canal displayed in the MPR, axial, and coronal images were also different. In the MPR images, they all displayed definite intact roof over the superior semicircular canal. There were 2 dehiscence in all axial and coronal images, and the specificities were 77.8%.
The MPR image is more useful in diagnosis of superior semicircular canal dehiscence syndrome than that of the routine axial and coronal images.
评估多平面重建（MPR）在诊断半规管裂综合征中的临床应用价值。
对复旦大学耳科学与颅底外科组确诊为半规管裂综合征的9例患者进行回顾性研究。3名放射科医生分析了所有患者的0.75mm准直轴位和冠状位图像以及0.75mm准直MPR图像，得出了相同的结果。
9例患者共有18个半规管，其中9个完整，9个有缺损。所有有缺损的半规管在所有MPR图像上均显示明确的骨裂，敏感度为100%；然而，9个有缺损的半规管中，7个在轴位图像上被诊断为骨裂，8个在冠状位图像上被诊断为骨裂，敏感度分别为77.8%和88.9%。另外9个半规管完整的患者在MPR、轴位和冠状位图像上的表现也不同。在MPR图像上，它们均显示半规管上方明确完整的骨顶。在所有轴位和冠状位图像上有2例骨裂，特异度为77.8%。
与常规轴位和冠状位图像相比，MPR图像在诊断半规管裂综合征方面更具优势。
