Table 3.

Visual Assessment of Residual Volume and Total Lung Capacity Visit 1 to 2 Volume Outliers

Scan Type	No. of Subjects with >20% V2 ΔAir Volume	Motion or Metal Artifacts*	Large BMI Changes*	Cases with Comorbidities Such as Fibrosis, Paralyzed Diaphragm, Lung Surgeries, etc.*	Mismatched Subjects (V1 vs. V2)*
TLC	80	18	1	3	1
RV	162	18	1	3	1

Definition of abbreviations: BMI = body mass index; RV = residual volume; TLC = total lung capacity; V1 = visit 1; V2 = visit 2.

Results of visual assessment of RV and TLC data sets found to have >20% V2 air volume difference relative to baseline V1 values.

^*Scans that were found to have visibly apparent differences beyond what would be expected from disease progression and beyond a simple mismatched breath hold (V2 vs. V1).