This is an unblinded pilot study to investigate the technical feasibility of using an electrical impedance tomography device for noninvasive pulmonary function monitoring in ALS patients.~For both Cohort I and II, subject participation will require two visits (initial and 3-4 month follow up), which are expected to last approximately 30 minutes. Subjects will undergo EIT imaging with the investigational device prior to and while performing a standard PFT procedure. The actual EIT imaging will last for 10 to 15 minutes.
This is an unblinded pilot study to investigate the technical feasibility of using an electrical impedance tomography device for noninvasive pulmonary function monitoring in ALS patients. The study will enroll patients with ALS in one cohort and healthy volunteers in a second cohort that will both undergo EIT imaging with the investigational device prior to and while performing a standard PFT procedure.