Abstract #1478
Static Lung Volumes Assessed on MRI with Spirometry Control in Comparison to Body-Plethysmography
Yanping Sun 1 , Christian M Lo Cascio 1 , Firas S Ahmed 2 , Meghaq A Parikh 1 , Yongqiang Tan 2 , Binsheng Zhao 2 , Robert C Basner 1 , Paul Enright 3 , Martin R Prince 4 , and R Graham Barr 1
1
Medicine, Columbia University Medical
Center, New York, NY, United States,
2
Radiology,
Columbia University Medical Center, New York, NY, United
States,
3
Medicine,
University of Arizona, Tucson, AZ, United States,
4
Radiology,
Cornell University Medical Center, New York, NY, United
States
Lung volumes such as total lung capacity (TLC),
functional residual capacity (FRC) and residual volume
(RV) are used to quantify restriction, hyperinflation
and gas trapping. Absolute static lung volumes are often
measured using a body-plethysmograph; however,
measurements are indirect, derived based upon Boyles
Law, and can be imprecise. We tested the reproducibility
of lung volumes measured directly on MRI with
concomitant spirometry control and compared to
body-plethysmograph measurements. TLC and RV measured by
MRI met ATS/ERS criteria for reproducibility, as did TLC
and FRC by plethysmography . TLC on MRI and
plethysmography were highly correlated (r=0.98;
P<0.001).
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