Semi-quantitation of pulmonary perfusion heterogeneity on respiratory-gated inspiratory and expiratory perfusion SPECT in patients with pulmonary emphysema.
OBJECTIVE Pulmonary perfusion heterogeneity (PPH) in pulmonary emphysema (PE) was semi-quantified by functional lung volume rate (FLVR) curves obtained from respiratory-gated inspiratory and expiratory single-photon emission computed tomography (SPECT). METHODS::METHODS:: Gated and ungated SPECT were obtained in 36 PE patients [25 with stage IIA and 11 with stage IIB for global initiative for chronic obstructive lung disease (GOLD) stage classification] ... Read more