NCT01829672

Non-invasive Diagnostics of Pulmonary Hypertension With Dual Energy Computed Tomography

Non-invasive Diagnostics of Pulmonary Hypertension With Dual Energy Computed Tomography - Prospective Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 55 (actual)
• Sponsor: Medical University of Graz · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

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.

Conditions

• Pulmonary Arterial Hypertension

Interventions

Type	Name	Description
RADIATION	Dual-energy computed tomography investigation	1x 20ml Ultravist (370mg J/ml)3-5ml/s, i.v. 1x 40ml Ultravist (370mg J/ml)3-5ml/s i.v. Contrast agent administration

Timeline

• Start date: 2013-03-01
• Primary completion: 2017-03-01
• Completion: 2017-03-01
• First posted: 2013-04-11
• Last updated: 2017-07-11

Locations

1 site across 1 country: Austria