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- W2079641710 abstract "We propose a method for non-invasive quantification of hemodynamic changes in the pulmonary arteries resulting from pulmonary hypertension (PH).Using a two-element Windkessel model, and input parameters derived from standard MRI evaluation of flow, cardiac function and valvular motion, we derive: pulmonary artery compliance (C), mean pulmonary artery pressure (mPAP), pulmonary vascular resistance (PVR), pulmonary capillary wedge pressure (PCWP), time-averaged intra-pulmonary pressure waveforms and pulmonary artery pressures (systolic (sPAP) and diastolic (dPAP)). MRI results were compared directly to reference standard values from right heart catheterization (RHC) obtained in a series of patients with suspected pulmonary hypertension (PH).In 7 patients with suspected PH undergoing RHC, MRI and echocardiography, there was no statistically significant difference (p < 0.05) between parameters measured by MRI and RHC. Using standard clinical cutoffs to define PH (mPAP > 25 mmHg), MRI was able to correctly identify all patients as having pulmonary hypertension, and to correctly distinguish between pulmonary arterial (mPAP > 25 mmHg, PCWP < 15 mmHg) and venous hypertension (mPAP > 25 mmHg, PCWP > 15 mmHg) in 5 of 7 cases.We have developed a mathematical model capable of quantifying physiological parameters that reflect the severity of PH." @default.
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- W2079641710 date "2007-09-01" @default.
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- W2079641710 title "Long term efficacy of local methyl prednisolone acetate injection in the management of carpal tunnel syndrome" @default.
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