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15 inductive stent heating and strain within an electromagnetic field

by:Newland     2019-10-05
The mechanical properties of traditional coronary stent in magnetic field are considered to be a concern in magnetic resonance imaging (MRI)
After the deployment of coronary stent.
The current recommendation is to wait up to six weeks after stent placement before selective MRI imaging.
The potential problem is mobilization of the support or possible heating.
We performed thermal and strain tests in MRI with strength 3 using commercial stainless steel and Cobalt Chromium Coronary Stent. 0 T, and 9. 4 T.
In order to measure the strain, the force is calculated according to the weight, tension and gravity constant of the support, while in the magnetic field of the equal Center.
The thermal test is carried out with a thermal resistor using a 1.
5 cc normal saline test room containing related brackets.
Baseline temperature and continuous monitoring were obtained during the application of energy within imaging coils and MRI scanners. (Table)
View this table: strain and heating of stainless steel and Cobalt Chromium Coronary Stent are negligible in standard clinical 3.
0 Tesla and high field survey 9.
4 Tesla imaging magnet (MRI).
The development of cardiac MRI has made coronary imaging a frontier.
High-resolution coronary imaging in the clinic is often required shortly after stent placement.
Our data support the MRI safety of patients placed with a recent stent using clinical magnetic field strength MRI 3.
0t and a very strong field currently only used for investigation.
At these field strengths, no significant strain or heat transfer was applied to the stent during MRI.
The mechanical properties of traditional coronary stent in magnetic field are considered to be a concern in magnetic resonance imaging (MRI)
After the deployment of coronary stent.
The current recommendation is to wait up to six weeks after stent placement before selective MRI imaging.
The potential problem is mobilization of the support or possible heating.
We performed thermal and strain tests in MRI with strength 3 using commercial stainless steel and Cobalt Chromium Coronary Stent. 0 T, and 9. 4 T.
In order to measure the strain, the force is calculated according to the weight, tension and gravity constant of the support, while in the magnetic field of the equal Center.
The thermal test is carried out with a thermal resistor using a 1.
5 cc normal saline test room containing related brackets.
Baseline temperature and continuous monitoring were obtained during the application of energy within imaging coils and MRI scanners. (Table)
View this table: strain and heating of stainless steel and Cobalt Chromium Coronary Stent are negligible in standard clinical 3.
0 Tesla and high field survey 9.
4 Tesla imaging magnet (MRI).
The development of cardiac MRI has made coronary imaging a frontier.
High-resolution coronary imaging in the clinic is often required shortly after stent placement.
Our data support the MRI safety of patients placed with a recent stent using clinical magnetic field strength MRI 3.
0t and a very strong field currently only used for investigation.
At these field strengths, no significant strain or heat transfer was applied to the stent during MRI.
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