Paired inspiratory/expiratory spiral CT and continuous respiration cine CT in the diagnosis of tracheal instability

被引:41
作者
Heussel, CP
Hafner, B
Lill, J
Schreiber, W
Thelen, M
Kauczor, HU
机构
[1] Univ Mainz, Dept Radiol, D-55131 Mainz, Germany
[2] Univ Mainz, Dept Ear Nose Throat Surg, D-55131 Mainz, Germany
[3] Univ Mainz, Dept Pneumol Internal Med 3, D-55131 Mainz, Germany
关键词
cine CT; helical CT; image display and recording; trachea; stenosis or obstruction;
D O I
10.1007/s003300100818
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
In tracheo- and bronchomalacia, localisation and determination of collapse is necessary for planning of surgical procedure. We compared inspiratory and expiratory spiral CT, cine CT, bronchoscopy, exemplary cine MR, and evaluated the clinical relevance. Twenty-nine patients (2 follow-ups; mean age 61 years, age range 27-85 years) with suspected or verified tracheal stenosis or collapse (post-tracheotomy: n = 17; neoplasm: n = 5; other: n = 7) underwent paired breath-hold inspiratory and expiratory spiral CT. Forty-five additional cine CT were performed at 1-4 levels (mean 1.5) during continuous respiration (increment 100 ms) to clarify respiratory collapse. The tracheal cross-sectional diameters of both techniques were calculated. Comparison with bronchoscopy, follow-up, and influence upon therapy were evaluated retrospectively. Exemplary comparison with cine MR (8 frames/s) was done in 3 cases. In addition to bronchoscopy, further information concerning localisation, extent, collapse, stability of the tracheal wall, distal portions of the stenosis and extraluminal compressions were obtained. A significantly higher degree and more pathological collapses (> 50 %) were seen using cine CT (38 %) compared with paired spiral CT (13 %; degree: p < 0.0001; number: p < 0.001). The findings changed the further therapeutic procedure in 16 of 29 patients. Further stenoses were excluded and bronchoscopy was verified in another 13 of 29. Temporal resolution of cine CT and cine MR is sufficient; however, spatial resolution of cine MR is inferior. Paired inspiratory and expiratory spiral CT localises tracheal stenoses and demonstrates relevant extraluminal compression. Significantly improved evaluation of respiratory collapse and further information of localised tracheal instability is obtained by cine CT. Cine MR promises more functional information especially due to free choice of imaging plane.
引用
收藏
页码:982 / 989
页数:8
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