Hemodynamic assessment ofpulmonary arteryon smokerswith 3.0T phase-contrast MR imaging: initial experience

Hemodynamic assessment of pulmonary artery on smokers with 3.0T phase-contrast MR imaging: initial experience To investigate pulmonary blood flow of main pulmonary artery and its changes induced by smoking with phase-contrast MR imaging (PC-MRI).Ten smokers and ten non-smokers, underwent PC-MRI of main pulmonary artery. Main measurement parameters included peak positive velocity, average flow, average positive flow and distensibility. Average flow and average positive flow of main pulmonary artery in smokers group were significantly lower than these and in non-smokers group. Peak positive velocity and distensibility of main pulmonary artery in smokers group were also lower than these in non-smokers group, but there were no statistical differences between them. The findings of this study suggest that PC-MRI may reflect pulmonary blood flow change induced by smoking, which is useful to quantitatively evaluate and monitor pulmonary blood flow change in smokers.

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