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01-10-2017 | Vascular-Interventional

Chronic thromboembolic pulmonary hypertension: Evaluation of 2D-perfusion angiography in patients who undergo balloon pulmonary angioplasty

Authors: Sabine K. Maschke, Julius Renne, Thomas Werncke, Karen M. Olsson, Marius M. Hoeper, Frank K. Wacker, Bernhard C. Meyer, Jan B. Hinrichs

Published in: European Radiology | Issue 10/2017

Abstract

Objective

To evaluate the feasibility of 2D-perfusion angiography (2D-PA) in order to quantify perfusion changes of the lung parenchyma pre- and post-balloon pulmonary angioplasty (BPA).

Methods

Thirty consecutive interventions in 16 patients with 99 treated pulmonary artery segments were included. To quantify changes in pulmonary blood flow using 2D-PA, the acquired digital subtraction angiographies (DSA) pre- and post-BPA were post-processed. A reference ROI in the treated pulmonary artery and a distal target ROI in the lung parenchyma were placed in corresponding areas on DSA pre- and post-BPA. Time to peak (TTP), peak density (PD) and area under the curve (AUC) were assessed. The ratios reference ROI to target ROI (TTP_parenchyma/TTP_inflow; PD_parenchyma/PD_inflow; AUC_parenchyma/AUC_inflow) were calculated. Relative differences of the 2D-PA parameters were correlated to changes in the pulmonary-flow-grade-score.

Results

The pulmonary-flow-grade-score improved after BPA (p<0.0001). Likewise, the ratio TTP_parenchyma/TTP_inflow shortened by 10% (p=0.0002), the PD_parenchyma/PD_inflow increased by 46% (p<0.0001) and the AUC_parenchyma/AUC_inflow increased by 36% (p<0.0001). A significant correlation between changes in the pulmonary-flow-grade-score and changes in PD_parenchyma/PD_inflow (ρ=0.48, p<0.0001) and AUC_parenchyma/AUC_inflow (ρ=0.31, p=0.0018) was observed.

Conclusion

Quantification of pulmonary perfusion pre- and post-BPA using 2D-PA is feasible and has the potential to improve monitoring of BPA.

Key points

• Quantification of BPA results by use of 2D-PA is feasible.

• 2D-PA allows objective assessment of changes in lung parenchymal perfusion.

• 2D-PA has the potential to optimize BPA.

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Title: Chronic thromboembolic pulmonary hypertension: Evaluation of 2D-perfusion angiography in patients who undergo balloon pulmonary angioplasty
Authors: Sabine K. Maschke
Julius Renne
Thomas Werncke
Karen M. Olsson
Marius M. Hoeper
Frank K. Wacker
Bernhard C. Meyer
Jan B. Hinrichs
Publication date: 01-10-2017
Publisher: Springer Berlin Heidelberg
Published in: European Radiology / Issue 10/2017
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-017-4806-z

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Springer Medicine

Chronic thromboembolic pulmonary hypertension: Evaluation of 2D-perfusion angiography in patients who undergo balloon pulmonary angioplasty

Abstract

Objective

Methods

Results

Conclusion

Key points

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Objective

Methods

Results

Conclusion

Key points

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