Session Information
Date: Thursday, June 8, 2017
Session Title: Other
Session Time: 1:15pm-2:45pm
Location: Exhibit Hall C
Objective: The aim of the study was to optimize MRI sequences in order to make possible a safe MRI examination for DBS patients. The optimized MRI sequences should be comparable with the sequences used in everyday clinical practice with regard to image quality and scan time.
Background: Magnetic resonance imaging (MRI) of patients with implanted deep brain stimulation (DBS) devices is a challenge for healthcare providers. Due to the safety concerns about the magnetic field interaction with the device, e.g. thermal damage due to the radiofrequency heating, the device manufacturer admitted stringent guidelines. New stimulators allow whole-body measurements with 1.5T MRI, provided that a high-frequency transmission field (B1rms) of a maximum of 2.0 μT is maintained.
Methods: We optimized MRI protocols from the following body parts (brain, spine, heart, liver, knee) according to the requirements of the manufacturer (Medtronic). The protocols are based on sequences used in everyday clinical practice. The MRI protocols were optimized for two MRI scanners (Achieva 1,5T scanner, Philips Medical Systems, Best, The Netherlands and Aera 1,5T scanner, Siemens Medical Solutions, Erlangen, Germany). The standard protocols and the optimized protocols were measured for each body region in 5 subjects each. The images were compared and evaluated by 3 blinded radiologists with regard to image quality. This was done by means of a standardized questionnaire.
Results: Results showed that the energy-optimized sequences have a similar image quality compared to the standard sequences. The measurement times of the optimized protocols did not differ significantly from the protocols used in everyday clinical practice.
Conclusions: The optimized MRI sequences showed a good image quality at acceptable scan time and make whole body MRI measurements in standard body regions possible. When MRI sequences are adapted to required energy conditions, MRI examination of DBS patients is no longer a contraindication.
To cite this abstract in AMA style:
C. Drews, S. Wolff, L. Lunden, O. Jansen. Optimization and evaluation of whole body MRI sequences for patients with deep brain stimulators [abstract]. Mov Disord. 2017; 32 (suppl 2). https://www.mdsabstracts.org/abstract/optimization-and-evaluation-of-whole-body-mri-sequences-for-patients-with-deep-brain-stimulators/. Accessed June 15, 2025.« Back to 2017 International Congress
MDS Abstracts - https://www.mdsabstracts.org/abstract/optimization-and-evaluation-of-whole-body-mri-sequences-for-patients-with-deep-brain-stimulators/