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Changes of ALFF in patients with COPD compared with controls.
Notes: (A) Uncontrolling for SaO2, (B) controlling for SaO2. P<0.05 (corrected). Red to yellow indicates an increase, blue indicates a decrease.
Abbreviations: ALFF, amplitude of low-frequency fluctuation; COPD, chronic obstructive pulmonary disease; L, left; R, right.
