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  • Title: Regional pulmonary perfusion following human heart-lung transplantation.
    Author: Lisbona R, Hakim TS, Dean GW, Langleben D, Guerraty A, Levy RD.
    Journal: J Nucl Med; 1989 Aug; 30(8):1297-301. PubMed ID: 2502608.
    Abstract:
    Ventilation and perfusion scans were obtained in six subjects who had undergone heart-lung transplantation with consequent denervation of the cardiopulmonary axis. Two of the subjects had developed obliterative bronchiolitis, which is believed to be a form of chronic rejection. Their pulmonary function tests demonstrated airflow obstruction and their scintigraphic studies were abnormal. In the remaining four subjects without obstructive airways disease, ventilation and planar perfusion scans were normal. Single photon emission computed tomography imaging of pulmonary perfusion in these patients revealed a layered distribution of blood flow indistinguishable from that of normal individuals. It is concluded that neurogenic mechanisms have little influence on the pattern of local pulmonary blood flow at rest.
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