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  • Title: Wedge and subselective pulmonary angiography in pulmonary hypertension secondary to venous obstruction.
    Author: Bowen JS, Bookstein JJ, Johnson AD, Peterson KL, Moser KM.
    Journal: Radiology; 1985 Jun; 155(3):599-603. PubMed ID: 4001359.
    Abstract:
    Pulmonary wedge or subselective angiography provided key diagnostic information in two cases of pulmonary hypertension secondary to pulmonary venous obstruction. Whereas conventional pulmonary angiograms and ventilation-perfusion lung scans were interpreted as showing embolism, plain radiographs demonstrated Kerley B lines, suggesting venous obstruction. Subselective or wedge angiography of nonopacified arteries verified their anatomical patency and also revealed venous stenoses, collaterals, and atrophy indicative of obstruction.
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