Measurement of Tracheobronchial Tree Using 3D CT

Computed Tomography Clinical Trial

Official title:

Measurement of Tracheobronchial Tree Using Multiplane CT Reconstructions to Guide Selecting Double-lumen Tubes

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT03378180
• Other study ID #: JHBahk_RUA
• Status: Not yet recruiting
• Phase: N/A
• First received: December 11, 2017
• Last updated: December 17, 2017
• Start date: December 25, 2017
• Est. completion date: March 30, 2018

Study information

• Verified date: December 2017
• Source: Seoul National University Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Anatomical variations of right main bronchus have been discouraged anesthesiologists' use of right-sided double lumen tubes to facilitate one-lung anesthesia. However, there are absolute indications of right-sided DLTs surgically, such as left pneumonectomy or in cases with left main endobronchial lesions.

With recent advances of 3-dimensional spiral CT reconstruction technique, the investigators conducted this retrospective study to measure accurate length of right and left main bronchus and the angle between the center of the right main bronchus and right upper lobe orifice in axial image to help choosing and further manufacturing right-sided double-lumen tubes.

Description:

All CT images will be reviewed using the image measurement software with a slice thickness of 1 mm. A level of -450 Hounsfield units and a width of 1000 Hounsfield units were used for bronchial window settings.

The length of right and left main bronchus will be measured from the tracheal bifurcation to the point of their first branches, respectively, in both 2D- and 3D-CT images. The anteroposterior angulation of right upper lobar bronchus will be measured from the axial 2D-images by the angle between the horizontal midline of the right main bronchus and the center of the RUL orifice which indicates the origin of the RUL bronchus in which the right upper lobar bronchus shows maximal diameter.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 400
• Est. completion date: March 30, 2018
• Est. primary completion date: February 20, 2018
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 80 Years

Eligibility

Inclusion Criteria:

• 3D- thoracic CT scan images obtained between March 1st and October 31th, 2016

Exclusion Criteria:

• younger than 18

• with intraluminal lesions in main bronchus

• with abnormalities of tracheobronchial tree

• with history of tracheobronchial injury or surgery

• diagnosed musculoskeletal deformity.

Related Conditions & MeSH terms

• Computed Tomography
• Double Lumen Tube

Locations

Country	Name	City	State
Korea, Republic of	Seoul National University Hospital	Seoul

Sponsors (1)

Lead Sponsor	Collaborator
Seoul National University Hospital

Country where clinical trial is conducted

Korea, Republic of, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	right upper lobe orifice	the angle between the center of the right main bronchus and right upper lobe orifice in axial image	through study completion, an average of 1 year
Secondary	length of right and left main bronchus	accurate length of both main stem bronchi measured by 3D CT	through study completion, an average of 1 year