Non-invasive Diagnostics of Pulmonary Hypertension With Dual Energy Computed Tomography - Prospective Study
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Pulmonary Arterial Hypertension
- Sponsor
- Medical University of Graz
- Enrollment
- 55
- Locations
- 1
- Primary Endpoint
- Pulmonary blood flow and volume determined by dual energy computed tomography
- Status
- Completed
- Last Updated
- 8 years ago
Overview
Brief Summary
The aim of the study is to determine relevant hemodynamic parameters for the diagnostics of pulmonary arterial hypertension (PAH) by dynamic contrast enhanced dual-energy CT (DE-CT). In this prospective study the investigators validate DE-CT results of patients against hemodynamic parameters from right heart catheterisation and control the results by other clinical investigations. The investigators expect that using this non-invasive method, parameters relevant for the diagnosis of the patients with PAH, like pulmonary blood volume, blood flow and perfusion heterogeneity, can be determined.
Detailed Description
Pulmonary arterial hypertension (PAH) is a rare, life-threatening disease. It is characterized by the elevation of pulmonary arterial pressure and pulmonary vascular resistance. A remodeling of small pulmonary vessels characterized by the proliferation of the adventitia, the hypertrophy of the media and fibrosis of the intima can be observed on the microscopic level. Non-invasive techniques for hemodynamic assessment and identification of early pulmonary vascular remodeling and pulmonary hypertension have a marked practical advantage as compared to invasive right heart catheterization, however, their accuracy and reliability is not well established. In the present study the investigators examine patients who are scheduled for a thorax CT with an additional dynamic contrast-enhanced DE-CT protocol and derive established parameters for the diagnosis of PAH as well as novel parameters from the CT scans. These are compared to results from the right-heart catheterization and other investigations routinely carried out on these patients.
Investigators
Eligibility Criteria
Inclusion Criteria
- •patients with right heart catheterization data
Exclusion Criteria
- •patients with decreased renal function
- •patients who received CT in the previous six months
- •intolerance of contrast material
- •other standard CT contraindications
Outcomes
Primary Outcomes
Pulmonary blood flow and volume determined by dual energy computed tomography
Time Frame: measurements with right heart catheterisation within 1 month
validation of pulmonary blood flow and volume of pulmonary hypertension patients
Secondary Outcomes
- Comparison of dual energy computed tomography derived data with clinical findings of pulmonary hypertension patients(measurements with right heart catheterisation within 1 month)
- Lung perfusion heterogeneity determined by dual energy computed tomography(measurements with right heart catheterisation within 1 month)