Study: NCT04549636

Intervention type: OTHER
Intervention: V/Q SPECT-CT
Description: At visits 1 and 2, ventilation will be assessed by 99mTc Technegas SPECT ventilation scan and perfusion will be assessed by 99mTc Macroaggregated Albumin SPECT perfusion scan.

Intervention type: OTHER
Intervention: V/Q SPECT-CT
Description: At visits 1 and 2, ventilation will be assessed by 99mTc Technegas SPECT ventilation scan and perfusion will be assessed by 99mTc Macroaggregated Albumin SPECT perfusion scan.

Intervention type: OTHER
Intervention: V/Q SPECT-CT
Description: At visits 1 and 2, ventilation will be assessed by 99mTc Technegas SPECT ventilation scan and perfusion will be assessed by 99mTc Macroaggregated Albumin SPECT perfusion scan.

Intervention type: OTHER
Intervention: V/Q SPECT-CT
Description: At visits 1 and 2, ventilation will be assessed by 99mTc Technegas SPECT ventilation scan and perfusion will be assessed by 99mTc Macroaggregated Albumin SPECT perfusion scan.

Intervention type: OTHER
Intervention: St. George's Respiratory Questionnaire (SGRQ)
Description: At visits 1 and 2, quality of life will be evaluated using the St. George's Respiratory Questionnaire (SGRQ).

Intervention type: OTHER
Intervention: St. George's Respiratory Questionnaire (SGRQ)
Description: At visits 1 and 2, quality of life will be evaluated using the St. George's Respiratory Questionnaire (SGRQ).

Intervention type: OTHER
Intervention: St. George's Respiratory Questionnaire (SGRQ)
Description: At visits 1 and 2, quality of life will be evaluated using the St. George's Respiratory Questionnaire (SGRQ).

Intervention type: OTHER
Intervention: St. George's Respiratory Questionnaire (SGRQ)
Description: At visits 1 and 2, quality of life will be evaluated using the St. George's Respiratory Questionnaire (SGRQ).

Intervention type: OTHER
Intervention: mMRC (Modified Medical Research Council) Dyspnea Scale
Description: At visits 1 and 2, dyspnea will be evaluated using the mMRC (Modified Medical Research Council) Dyspnea Scale.

Intervention type: OTHER
Intervention: mMRC (Modified Medical Research Council) Dyspnea Scale
Description: At visits 1 and 2, dyspnea will be evaluated using the mMRC (Modified Medical Research Council) Dyspnea Scale.

Intervention type: OTHER
Intervention: mMRC (Modified Medical Research Council) Dyspnea Scale
Description: At visits 1 and 2, dyspnea will be evaluated using the mMRC (Modified Medical Research Council) Dyspnea Scale.

Intervention type: OTHER
Intervention: mMRC (Modified Medical Research Council) Dyspnea Scale
Description: At visits 1 and 2, dyspnea will be evaluated using the mMRC (Modified Medical Research Council) Dyspnea Scale.

Intervention type: OTHER
Intervention: Six-minute walk test (6MWT)
Description: At visits 1 and 2, exercise capacity will be evaluated using the six-minute walk test (6MWT).

Intervention type: OTHER
Intervention: Six-minute walk test (6MWT)
Description: At visits 1 and 2, exercise capacity will be evaluated using the six-minute walk test (6MWT).

Intervention type: OTHER
Intervention: Six-minute walk test (6MWT)
Description: At visits 1 and 2, exercise capacity will be evaluated using the six-minute walk test (6MWT).