- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04300972
Comparison of Contrast Agent Administration Protocols
The will compare two different ways of administering contrast media in CT exams of the chest:
- a fixed dose of contrast medium
- a weight- and body-type-adapted dose of contrast medium
The goal is to see if one protocol is superior to the other in reliably producing diagnostic CT images.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The continuing advances in computed tomographic (CT) technology in the past decades have provided ongoing opportunities to improve CT image quality, clinical practice and discover new clinical CT imaging applications. New CT technology, however, has introduced new challenges in clinical radiology practice. One of the challenges deals with intravenous contrast medium (CM) administration. Although multidetector CT allows more efficient and flexible use of contrast medium than single-detector CT, to fully reap the benefits of multidetector CT, certain technical challenges involving maximum contrast enhancement and optimal contrast material delivery must be met (1). While CT technology has evolved, the practice of CT intravenous CM administration has been continually debated and updated. The users of new CT technology, accompanied with its newly added technical complexity, discover they fall short of achieving a desired image quality with the traditional standard administration of CM. This entails a change in practice. In the department of Radiology at St Olav University Hospital (SOH), a new protocol for CM administration is now developed and is ready for implementation. This protocol is based on a body weight adapted CM administration, while the current protocol has a fixed CM injection. In this study, this newly CM administration protocol for thoracic CT will be compared to the fixed CM injection protocol. To our knowledge, very few studies (2) have been published on the use of body weight adapted injection protocols for Thoracic CT. Most of the studies report the impact of body weight adapted CM injection protocols for the coronary arteries of CT angiography (3- 5). Therefore, the aim of this study is to determine whether individually tailored protocol(s) for the injection of CM results in higher and more homogeneous vascular attenuation at thoracic CT compared with conventional injection protocols using fixed injection parameters. We know that to achieve optimal contrast enhancement in thoracic CT involves essential factors such as CT tube voltage and CT attenuation, patient factors, CM factors and CT scanning factors (1) and thus all these factors will be addressed and discussed in this investigation.
Specific aims of the study:
- To assess and compare the CT attenuation achieved with both protocols
- Compare the required amount of CM using weight adapted CM protocol and fixed CM injection protocol
- Compare the quality of the images using weight adapted CM protocol and fixed CM injection protocol
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
All patients referred for a thoracic CT (only) at St. Olavs Hospital will be screened for eligibility Inclusion criteria are
-referral indicates the need for contrast administration (as decided by a radiologist)
Exclusion criteria are:
- impaired renal function (glomerular filtration rate <60 ml/min)
- congenital heart disease (as indicated by referral)
- congestive heart failure (as indicated by referral)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Diagnostic
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: fixed dose
|
a fixed amount of contrast media is used, independently of weight and body type
|
Experimental: weight and body type adapted dose
|
contrast media dose is adapted to weight and body type
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
CT density of large vessel, measured in Hounsfield units (HU) in the imaging software (PACS)
Time Frame: immediately after imaging
|
immediately after imaging
|
Collaborators and Investigators
Sponsor
Collaborators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- CMProtokoll
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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