Mr. Bryant Baek Profile

Bryant Baek

Clinical Engineer at San Francisco VA Medical Ctr

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 17 March 2008 Paper

Assessment of the potential for catheter heating during MR imaging

Bryant Baek, David Saloner, Gabriel Acevedo-Bolton, Randall Higashida, John Comstock, Alastair Martin

Proceedings Volume 6918, 691824 (2008) https://doi.org/10.1117/12.769582

KEYWORDS: Synthetic aperture radar, Magnetic resonance imaging, Head, Temperature metrology, Tissues, Temperature sensors, Safety, Blood circulation, Injuries, Scanners

Read Abstract +

There is an increasing interest in using MR imaging as a means of guiding endovascular procedures due to MR's unparalleled soft tissue characterization capabilities and its ability to assess functional parameters such as blood flow and tissue perfusion. In order to evaluate the potential safety risk of catheter heating, we performed in vitro testing where we measured heat deposition in sample non-ferrous 5F catheters ranging in length from 80cm - 110cm within a gel phantom. To identify the conditions for maximum heat deposition adjacent to catheters, we measured (1) the effect of variable immersed lengths, (2) the effect of variable SAR, and (3) whether heating varied along the catheter shaft. Net temperature rise per scan and initial rate of temperature rise were determined for all configurations. The temperature recordings clearly and consistently demonstrated the correlations between MR scanning under the three variable conditions and heat deposition. Our overall maximum heating condition, which combined the maximum heating conditions of all three variables, was modest (<2°C/min), but well above the temperature response of the gel well away from the catheter. Reduced SAR acquisitions effectively limited these temperature rises, and RF exposure levels of 0.2W/kg produced little detectible temperature change over the 2 minute MR acquisitions studied here. A combination of SAR limits and imaging duty cycle restrictions appear to be sufficient to permit MR imaging in catheterized patients without concern for thermal injury.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years