MR Imaging of the Trachea:In Vivo and In Vitro Study.
10.3348/jkrs.1994.30.6.1051
- Author:
Hyeon Joo JEONG
;
Jin Suck SUH
;
Myung Joon KIM
- Publication Type:In Vitro ; Original Article
- MeSH:
Cadaver;
Carcinoid Tumor;
Cartilage;
Healthy Volunteers;
Humans;
Magnetic Resonance Imaging*;
Mucous Membrane;
Neck;
Trachea;
Tracheal Stenosis;
Tracheoesophageal Fistula
- From:Journal of the Korean Radiological Society
1994;30(6):1051-1056
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To establish signal intensity characteristics of the trachea according to the histologic layers, we performed in vivo and in vitro MR studies. MATERIALS AND METHODS: We performed MR imaging of the trachea at 1.5T unit in 11 patients mediastinal masses, vascular anomalies, tracheal stenosis or iatrogenic tracheoesophageal fistula, aryepiglottic fold thickening or mass, tracheal carcinoid, one healthy volunteer and one cadaveric trachea. By using anterior, volume neck or 3 inch dual coil with various pulse sequences, axial and coronal images of the trachea were obtained. The tracheal layers with different signal intensity on MR images were correlated with the histology. RESULTS: In vivo and in vitro MR studies revealed two layers of the trachea ;the inner layer had intermediate to high signal and the outer had low signal. The tracheal cartilage showed low signal intensity in all pulse sequences. The submucosa appeared as intermediate signal intensity on T1 weighted images but high signal intersity on other images due to its abundant mucous and mucoserous glands. However, the mucosa and perichondrium could not be defined on MR images. CONCLUSION: Characterization of the signal intensity according to the histologic layers of the trachea might be helpful for the evaluation of intrinsic lesions of the irachea or the possibility of tracheal invasion from the adjacent tumors.
