S23 Accuracy of contrast enhanced MR lung perfusion compared to perfusion scintigraphy in diagnosing chronic thromboembolic pulmonary hypertension

Lung perfusion: MRI vs. SPECT for screening in suspected chronic thromboembolic pulmonary hypertension

PURPOSE To assess the diagnostic accuracy of magnetic resonance imaging (MRI) perfusion against perfusion single photon emission tomography (SPECT) screening for chronic thromboembolic pulmonary hypertension (CTEPH). Ventilation/perfusion (V/Q) scintigraphy is recommended to screen for suspected CTEPH. It has previously been shown that 3D dynamic contrast-enhanced (DCE) lung perfusion MRI has a...

Inflow-weighted pulmonary perfusion: comparison between dynamic contrast-enhanced MRI versus perfusion scintigraphy in complex pulmonary circulation

BACKGROUND Due to the different properties of the contrast agents, the lung perfusion maps as measured by 99mTc-labeled macroaggregated albumin perfusion scintigraphy (PS) are not uncommonly discrepant from those measured by dynamic contrast-enhanced MRI (DCE-MRI) using indicator-dilution analysis in complex pulmonary circulation. Since PS offers the pre-capillary perfusion of the first-pass tr...

Drug Therapy in Patients with Chronic Thromboembolic Pulmonary Hypertension

Background: Chronic Thromboembolic Pulmonary Hypertension (CTEPH) results from the obstruction of predominantly major pulmonary vessels by organized blood clots and is one of the causes of pulmonary hypertension. The disease is still underdiagnosed and the true prevalence is not clear. The objective of this study was to determine the clinical characteristics and current management of patients w...

Perfusion lung scanning in obliterative pulmonary hypertension.

Dynamic susceptibility contrast-enhanced perfusion MR Imaging of Brain Tumors