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Balloon Pulmonary Angioplasty. The right and left images are pre-BPA and post-BPA, respectively. Contrast-enhanced images from before and after additional treatment showing the lateral basal segmental artery of right lung (Rt.A9b). On DSA images, many peripheral vessels are seen post-BPA. Abbreviations: BPA, balloon pulmonary angioplasty; DSA, digital subtraction angiography.
