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Published in:

01-09-2003 | Original Article

Phase-contrast MR assessment of pulmonary venous blood flow in children with surgically repaired pulmonary veins

Authors: Emanuela R. Valsangiacomo, Catherine Barrea, Christopher K. Macgowan, Jeffrey F. Smallhorn, John G. Coles, Shi-Joon Yoo

Published in: Pediatric Radiology | Issue 9/2003

Abstract

Background

Pulmonary venous (PV) obstruction may complicate surgical repair of PV abnormalities. By combining phase-contrast cine (PC) imaging and contrast-enhanced angiography, magnetic resonance (MR) imaging can provide physiological information complementing anatomical diagnosis.

Objectives

To compare the PV flow pattern observed after surgical repair of PV abnormalities with normal PV flow pattern and to investigate the changes occurring in the presence of PV stenosis by using PC MR in children.

Materials and methods

By using PC MR, PV flow was evaluated in 14 patients (3 months-14 years) who underwent surgical repair for PV abnormalities. Eleven children (8–18 years) were studied as normal controls. Peak flow velocities and patterns were compared among three groups: normal veins (n=23), surgically repaired veins without (n=44) and with stenosis (n=10).

Results

Normal and unobstructed pulmonary veins after surgery showed a biphasic or triphasic flow pattern with one or two systolic peaks and a diastolic peak. Unobstructed surgically repaired veins showed decreased peak systolic velocity (P =0.001) and an increased peak diastolic velocity (P=0.005) when compared to normal values. Obstructed veins showed decreased systolic and diastolic velocities when measured upstream from the stenosis.

Conclusion

PC MR shows different flow patterns among normal, surgically repaired pulmonary veins with and without stenosis.

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Title: Phase-contrast MR assessment of pulmonary venous blood flow in children with surgically repaired pulmonary veins
Authors: Emanuela R. Valsangiacomo
Catherine Barrea
Christopher K. Macgowan
Jeffrey F. Smallhorn
John G. Coles
Shi-Joon Yoo
Publication date: 01-09-2003
Publisher: Springer-Verlag
Published in: Pediatric Radiology / Issue 9/2003
Print ISSN: 0301-0449
Electronic ISSN: 1432-1998
DOI: https://doi.org/10.1007/s00247-003-0983-9

At a glance: The STEP trials

Springer Medicine

Phase-contrast MR assessment of pulmonary venous blood flow in children with surgically repaired pulmonary veins

Abstract

Background

Objectives

Materials and methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Background

Objectives

Materials and methods

Results

Conclusion

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