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

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01607489
First Posted: May 30, 2012
Last Update Posted: July 17, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Collaborator:
Ludwig Boltzmann Gesellschaft
Information provided by (Responsible Party):
Medical University of Graz
  Purpose
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 pilot study the investigators investigate patients who underwent right heart catheterisation with DE-CT to determine hemodynamic parameters 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.

Condition Intervention
Pulmonary Arterial Hypertension Radiation: Dual-energy computed tomography investigation

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: Non-invasive Diagnostics of Pulmonary Hypertension With Dual Energy Computed Tomography - Pilot Study

Resource links provided by NLM:


Further study details as provided by Medical University of Graz:

Primary Outcome Measures:
  • Pulmonary blood flow and volume determined by dual energy computed tomography [ Time Frame: measurements with right heart catheterisation within 1 month ]
    determination of differences in pulmonary blood flow and volume of pulmonary hypertension patients


Secondary Outcome Measures:
  • Comparison of dual energy computed tomography derived data with clinical findings of pulmonary hypertension patients [ Time Frame: measurements with right heart catheterisation within 1 month ]
    comparison of different state or type of pulmonary hypertension

  • Lung perfusion heterogeneity determined by dual energy computed tomography [ Time Frame: measurements with right heart catheterisation within 1 month ]
    quantification of regional perfusion differences in pulmonary hypertension patients


Enrollment: 25
Study Start Date: June 2011
Study Completion Date: March 2017
Primary Completion Date: March 2017 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
pulmonary vascular disease
Dual-energy computed tomography investigation
Radiation: Dual-energy computed tomography investigation

1x 20ml Ultravist (370mg J/ml)3-5ml/s,

1x 70ml Ultravist (370mg J/ml)3-5ml/s Contrast agent administration

Other Name: CT

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 underwent right heart catheterization and 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.

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
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
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01607489


Locations
Austria
Medical University Graz, Division of Pulmonology
Graz, Steiermark, Austria, 8010
Sponsors and Collaborators
Medical University of Graz
Ludwig Boltzmann Gesellschaft
Investigators
Principal Investigator: Horst Olschewski, MD Medical University of Graz
  More Information

Publications:
Responsible Party: Medical University of Graz
ClinicalTrials.gov Identifier: NCT01607489     History of Changes
Other Study ID Numbers: 23-356 ex 10/11
First Submitted: April 13, 2012
First Posted: May 30, 2012
Last Update Posted: July 17, 2017
Last Verified: July 2017
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Keywords provided by Medical University of Graz:
Early diagnosis of pulmonary arterial hypertension
dynamic dual-energy computed tomography

Additional relevant MeSH terms:
Hypertension
Hypertension, Pulmonary
Familial Primary Pulmonary Hypertension
Vascular Diseases
Cardiovascular Diseases
Lung Diseases
Respiratory Tract Diseases


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