Derlatka-Kochel Magdalena, Kumoniewski Pawel, Majos Marcin, Ludwisiak Kamil, Pomorski Lech, Majos Agata
Department of Radiological, Isotopic Diagnosis and Therapy, Medical University of Lodz, Poland.
Department of General and Oncological Surgery, Chair of Surgical Clinical Sciences, Medical University of Lodz, Poland.
Pol J Radiol. 2019 Sep 25;84:e368-e374. doi: 10.5114/pjr.2019.89122. eCollection 2019.
To verify the value of dynamic magnetic resonance imaging (MRI) sequences, fast field echo (FFE), and balanced gradient echo (true fast imaging with steady-state free precession - TRUFI) in the evaluation of vocal fold mobility in healthy volunteers, against ultrasound examination (US) as the reference test.
Vocal fold mobility in 35 healthy volunteers (age 20-59 years, 20 women and 15 men) with no history of laryngeal disorders and neck surgeries was determined by means of US and MRI during normal breathing and phonation of the "hiiii" sound. US images were used to determine the glottic angles. During MRI two dynamic sequences, fast field echo and balanced gradient echo, were applied to determine the minimum and maximum values of the glottic angles, along with the rima glottidis area, separately for the right and left compartments. Due to differences in larynx anatomy, the abovementioned parameters were analysed separately for women and men.
No significant differences were observed between the glottic angle values obtained during US and dynamic MRI (FFE and TRUFI sequences). Regardless of the dynamic MRI sequence used, a positive correlation was found between the maximum values of glottic angle and the rima glottidis area. This correlation was strong and statistically significant among men, but not in women.
Dynamic MRI of vocal folds using FFE and TRUFI sequence is an accurate method for the objective evaluation of rima glottidis width.
以超声检查（US）作为参考测试，验证动态磁共振成像（MRI）序列、快速场回波（FFE）和平衡梯度回波（稳态自由进动真快速成像 - TRUFI）在评估健康志愿者声带活动度方面的价值。
对35名无喉部疾病和颈部手术史的健康志愿者（年龄20 - 59岁，20名女性和15名男性）在正常呼吸和发“hiiii”音时，通过US和MRI测定声带活动度。US图像用于确定声门角。在MRI检查中，应用快速场回波和平衡梯度回波这两个动态序列分别确定左右声门区声门角的最小值和最大值以及声门裂面积。由于喉解剖结构的差异，上述参数分别对女性和男性进行分析。
在US和动态MRI（FFE和TRUFI序列）获得的声门角值之间未观察到显著差异。无论使用哪种动态MRI序列，声门角最大值和声门裂面积之间均呈正相关。这种相关性在男性中很强且具有统计学意义，但在女性中并非如此。
使用FFE和TRUFI序列对声带进行动态MRI检查是客观评估声门裂宽度的准确方法。
