Measurement of Lung Volumes: Usefulness of Spiral CT
Journal of the Korean Radiological Society
; : 709-714, 1996.
Article
in Korean
| WPRIM (Western Pacific)
| ID: wpr-123411
Responsible library:
WPRO
ABSTRACT
PURPOSE:
To evaluate the usefulness of spiral CT in the measurement of lung volumes. MATERIALS ANDMETHODS:
Fifteen healthy volunteers were studied by both spirometer and spiral CT at full inspiration and expiration inorder to correlate their results, including total lung capacity (TLC), vital capacity (VC) and residual volume(RV). 3-D images were reconstructed from spiral CT, and we measured lung volumes at a corresponding CT window range ; their volumes were compared with the pulmonary function test (paired t-test).RESULTS:
The window range corresponding to TLC was from -1000HU to -150HU (p=0.279, r=0.986), and for VC from -910HU to -800HU (p=0.366,r=0.954) in full-inspiratory CT. The optimal window range for RV in full-expiratory CT was from -1000HU to -450HU (p=0.757, r=0.777), and TLC-VC in full-inspiratory CT was also calculated (p=0.843, r=0.847).CONCLUSION:
Spiral CT at full inspiration can used to lung volumes such as TLC, VC and RV.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Respiratory Function Tests
/
Total Lung Capacity
/
Vital Capacity
/
Imaging, Three-Dimensional
/
Tomography, Spiral Computed
/
Healthy Volunteers
/
Lung
Language:
Korean
Journal:
Journal of the Korean Radiological Society
Year:
1996
Document type:
Article