Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/4796
Title: CT assessment of tracheal carinal angle and its determinants
Authors: Karabulut, Nevzat
Keywords: adolescent
adult
aged
article
body mass
body weight
bronchus
computer assisted tomography
controlled study
correlation analysis
diagnostic value
disease association
female
heart atrium enlargement
heart left atrium
human
image analysis
image processing
image quality
image reconstruction
major clinical study
male
measurement
mediastinum
medical assessment
obesity
pathological anatomy
patient referral
patient selection
prospective study
sex difference
spine
thoracic cavity
trachea
Adolescent
Adult
Aged
Aged, 80 and over
Body Mass Index
Female
Heart Atria
Humans
Male
Middle Aged
Obesity
Sex Characteristics
Tomography, Spiral Computed
Trachea
Abstract: The aim of this study was to investigate the effect of body habitus, dimensions of the thoracic cavity, location of the carina within the mediastinum, and left atrial size on tracheal carinal angle using CT scan. The study population was drawn from the patients referred to CT scan for various indications. A total of 120 patients (65 men and 55 women; age range 17-85 years; mean age 56 years) who denied a history of prior thoracic surgery, and in whom CT scan excluded pulmonary fibrosis, moderate or severe emphysema, atelectasis, intrathoracic mass or adenopathy, pericardial or pleural effusion were prospectively enrolled. The interbronchial (IBA) and subcarinal (SCA) angles were measured on coronal reformatted images. The presternal and retrovertebral fat thickness, the anteroposterior and transverse diameters of the thorax, the distances from carina to the sternum and to the vertebral column were obtained at the level of carina. Three orthogonal dimensions and the volume of the left atrium were also assessed. The mean interbronchial angle was 77° ± 13° (range 49-109°) and subcarinal angle was 73° ± 16° (range 34-107°). IBA positively correlated with the female gender (r=0.25, p=0.007), body mass index (r=0.28, p=0.002), presternal (r=0.40, p=0.001) and retrovertebral fat thickness (r=0.31, p=0.001). The interbronchial angle was significantly greater in obese patients compared with lean patients (p=0.02). Both IBA and SCA were positively correlated with the left atrial volume (r=0.40, p=0.001 and r=0.34, p=0.001, respectively), and its transverse and craniocaudal dimensions. The carina-vertebral column distance inversely correlated with IBA (r= -0.42, p=0.001) and SCA (r= -0.41, p=0.001). The size of the thoracic cavity did not show significant relation to tracheal bifurcation angle. Tracheal bifurcation angle ranges widely in normal subjects, and absolute measurements of the carinal angle is of little diagnostic value. In addition to left atrial enlargement, female gender, obesity and close situs of carina relative to vertebral column are associated with greater tracheal bifurcation angle. © 2005 The British Institute of Radiology.
URI: https://hdl.handle.net/11499/4796
https://doi.org/10.1259/bjr/75107416
ISSN: 0007-1285
Appears in Collections:PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Tıp Fakültesi Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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