Predictors of Patient Response to Pulmonary Thromboendarterectomy
Colleen J. Bergin1,2,
Claude Sirlin1,
Reena Deutsch3,
Peter Fedullo4,
John Hauschildt1,
Tung Huynh1,
William Auger4 and
Michele Brown1
1
Department of Radiology, University of California, 200 W. Arbor Dr., San
Diego, CA 92103.
2
Present address: Department of Anatomy with Radiology, University of Auckland,
Park Rd., Auckland, New Zealand.
3
General Clinical Research Center, University of California, San Diego, CA
92103.
4
Department of Medicine, University of California, San Diego, CA 92103.

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Fig. 1. 63-year-old man with chronic thromboembolic pulmonary hypertension.
CT angiogram shows thromboembolic material lining posterior wall of right
pulmonary artery. Note thickened, irregular, calcified intimal surface of
pulmonary artery.
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Fig. 2A. 57-year-old woman with chronic thromboembolic pulmonary
hypertension. CT angiogram at mediastinal window shows weblike narrowing
(arrow) in lingular artery.
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Fig. 2B. 57-year-old woman with chronic thromboembolic pulmonary
hypertension. CT angiogram at lung window shows reduced caliber of lingular
branch to superior segment (straight arrow) and normal-appearing
branch to inferior segment (curved arrow) of lingula. Right upper
lobe anterior segmental artery is also diminutive (arrowhead).
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Fig. 3A. 57-year-old woman with chronic thromboembolic pulmonary
hypertension. CT angiogram at lung window shows mosaic perfusion in both upper
lobes with enlarged arteries in apicoposterior segment on left and in anterior
segment on right (arrows).
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Fig. 3B. 57-year-old woman with chronic thromboembolic pulmonary
hypertension. CT angiogram at mediastinal window shows normal contour and
contrast enhancement within arteries in apicoposterior segment on left and in
anterior segment of right upper lobe (arrows).
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Fig. 3C. 57-year-old woman with chronic thromboembolic pulmonary
hypertension. CT angiogram at mediastinal window shows normal-sized pulmonary
vessels. Notice smaller size of segmental vessels compared with B.
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Fig. 4. Bar graph shows relationship between postoperative pulmonary
vascular resistance and median number of segments revealed on CT angiography
to have abnormal perfusion but normal segmental arteries. Figures shown are
average scores for observers 1 and 2. Note that postoperative pulmonary
vascular resistance remained abnormal for patients whose preoperative CT
angiograms showed more than one segment in which perfusion was abnormal with
normal segmental artery.
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Copyright © 2000 by the American Roentgen Ray Society.