Kulinna-Cosentini Christiane, Czerny Christian, Baumann Arnulf, Weber Michael, Sinko Klaus
Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, A-1090, Vienna, Austria.
Department of Cranio-, Maxillofacial and Oral Surgery, Medical University Vienna, Vienna, Austria.
Eur Radiol. 2016 Sep;26(9):2892-8. doi: 10.1007/s00330-015-4115-3. Epub 2015 Nov 28.
To evaluate the image quality of two fast dynamic magnetic resonance imaging (MRI) sequences: True fast imaging with steady state precession (TrueFisp) was compared with half-Fourier acquired single turbo-spin-echo (HASTE) sequence for the characterization of velopharyngeal insufficiency (VPI) in repaired cleft palate patients.
Twenty-two patients (10 female and 12 male; mean age, 17.7 ± 10.6 years; range, 9-31) with suspected VPI underwent 3-T MRI using TrueFisp and HASTE sequences. Imaging was performed in the sagittal plane at rest and during phonation of "ee" and "k" to assess the velum, tongue, posterior pharyngeal wall and a potential VP closure. The results were analysed independently by one radiologist and one orthodontist.
HASTE performed better than TrueFisp for all evaluated items, except the tongue evaluation by the orthodontist during phonation of "k" and "ee". A statistically significant difference in favour of HASTE was observed in assessing the velum at rest and during phonation of "k" and "ee", and also in assessing VP closure in both raters (p < 0.05). TrueFisp imaging was twice as fast as HASTE (0.36 vs. 0.75 s/image).
Dynamic HASTE images were of superior quality to those obtained with TrueFisp, although TrueFisp imaging was twice as fast.
• Dynamic MRI is an invaluable tool for diagnosing VPI. • Dynamic HASTE images were of superior quality to those obtained with TrueFisp. • TrueFisp imaging was twice as fast as HASTE imaging.
评估两种快速动态磁共振成像（MRI）序列的图像质量：将稳态进动快速成像（TrueFisp）与半傅里叶采集单次涡轮自旋回波（HASTE）序列进行比较，以用于腭裂修复患者腭咽闭合不全（VPI）的特征分析。
22例疑似VPI患者（10例女性，12例男性；平均年龄17.7±10.6岁；范围9 - 31岁）接受了使用TrueFisp和HASTE序列的3T MRI检查。在矢状面静息状态以及发“ee”和“k”音时进行成像，以评估软腭、舌、咽后壁及潜在的腭咽闭合情况。结果由一名放射科医生和一名正畸医生独立分析。
除正畸医生在发“k”和“ee”音时对舌的评估外，在所有评估项目中HASTE的表现均优于TrueFisp。在评估静息状态下以及发“k”和“ee”音时的软腭，以及两位评估者对腭咽闭合的评估方面，观察到HASTE具有统计学显著优势（p < 0.05）。TrueFisp成像速度是HASTE的两倍（0.36 vs. 0.75秒/图像）。
动态HASTE图像质量优于TrueFisp获得的图像，尽管TrueFisp成像速度是其两倍。
• 动态MRI是诊断VPI的重要工具。• 动态HASTE图像质量优于TrueFisp获得的图像。• TrueFisp成像速度是HASTE成像的两倍。
