Ascendant Aortic Aneurysm
Conditions
Brief summary
We will demonstrate the validity of measurements with a low-dose, EKG-gated CT without contrast in the ascending aorta evaluation, compared with the current Angio-CT measurements.
Detailed description
The actual protocol used in aorta evaluation consist of two CT-scans on the same study. The first scan that detects calcifications is using parameters with low-dose current, non EKG-gated and without contrast. The second scan uses iodine-contrast, EKG-gating and higher current dose to obtain higher image quality of diagnostic value. The study will optimize the first scan parameters and compare the measures of the aorta diameters from the standard protocol. By modifying the first scan parameters, we would demonstrate that the follow-up of an aortic aneurysm can safely be made with lower radiation exposure.
Interventions
OTHERModified Low-dose, EKG-gated CT without contrast for the evaluation of aortic aneurysm
On the same day, the subject will do : 1. Modified low-dose, EKG-gated CT without contrast 2. Usual high-dose, EKG-gated CT with contrast Comparing aortic diameters from the two protocols.
Sponsors
Université de Sherbrooke
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
60 Years to 100 Years
Healthy volunteers
Yes
Inclusion criteria
* 60 years old and more * 85 bpm or less
Exclusion criteria
* aortic material * EKG gating not possible * aorta pathology (thrombus, dissection)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Measures validity (aorta diameter in mm from scan images) | 12 months | Comparing aorta diameters from the two modalities. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Radiation (in msev from scanner report) | 12 months | Comparing radiation exposure with the two modalities |
Countries
Canada
Outcome results
None listed