Abstract #2548
In vivo 7T MR imaging triggered by phase information obtained from video signals of the human skin
Nicolai Spicher 1 , Markus Kukuk 1 , Mark E. Ladd 2,3 , and Stefan Maderwald 2
1
University of Applied Sciences and Arts
Dortmund, Dortmund, Germany,
2
Erwin
L. Hahn Institute for Magnetic Resonance Imaging,
University Duisburg-Essen, Essen, Germany,
3
Division
of Medical Physics in Radiology, German Cancer Research
Center, Heidelberg, Germany
A video of the forehead is used to offer an alternative
to contact-based triggering hardware. The video is
obtained from a camera installed above the subjects head
in a 7T MR bore; triggers are computed in real-time by
an algorithm based on phase information of mean pixel
intensities. During nonenhanced MR angiography of the
lower extremities of one volunteer, triggers from the
vendor-provided pulse oximeter and from the algorithm
were saved. Results suggest that the video-based
approach is principally able to reproduce the triggers
obtained by pulse oximetry but suffers in case of the
head motion.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Click here for more information on becoming a member.
