UNASSIGNED: A single-center case series of 7 consecutive singleton pregnancies with complex upper airway obstruction (2013-2019).
UNASSIGNED: A tertiary fetal medicine unit performing EXIT surgery.
UNASSIGNED: MRI SRR of the trachea was performed involving rigid motion correction of acquired 2D MRI slices combined with robust outlier detection to reconstruct an isotropic high-resolution volume. SRR, 2D MRI, and paired data were blindly assessed by 3 radiologists in 3 experimental rounds.
UNASSIGNED: Airway patency was correctly diagnosed in 4 of 7 cases (57%) with 2D MRI as compared with 2 of 7 cases (29%) with SRR alone or paired 2D MRI and SRR. Radiologists were more confident (P = .026) in airway patency diagnosis when using 2D MRI than SRR. Anatomic clarity was higher with SRR (P = .027) or paired data (P = .041) in comparison with 2D MRI alone. Radiologists detected further anatomic details by using paired images versus 2D MRI alone (P < .001). Cognitive load, as assessed by the NASA Task Load Index, was increased with paired or SRR data in comparison with 2D MRI.
UNASSIGNED: The addition of SRR to 2D MRI does not increase fetal airway patency diagnostic accuracy but does provide improved anatomic information, which may benefit surgical planning of EXIT procedures.
■7例连续单胎妊娠合并复杂上呼吸道阻塞的单中心病例系列(2013-2019年)。
■执行EXIT手术的三级胎儿医学单位。
■进行气管的MRISRR,涉及对采集的2DMRI切片进行刚性运动校正,并结合鲁棒的异常检测,以重建各向同性的高分辨率体积。SRR,2DMRI,和配对数据由3名放射科医师在3个实验轮中进行盲目评估.
■使用2DMRI正确诊断7例中的4例(57%)气道通畅,而使用单独的或配对的2DMRI和SRR的7例中的2例(29%)正确诊断。放射科医师使用2DMRI比SRR对气道通畅性诊断更有信心(P=0.026)。与单独的2DMRI相比,SRR(P=.027)或配对数据(P=.041)的解剖清晰度更高。放射科医师通过使用配对图像与单独的2DMRI来检测进一步的解剖细节(P<.001)。认知负荷,根据NASA任务负荷指数的评估,与2DMRI相比,配对或SRR数据增加。
■在二维MRI中增加SRR不会提高胎儿气道通畅性诊断的准确性,但确实提供了改善的解剖信息,这可能有利于EXIT程序的手术计划。