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Cardiac Magnetic Resonance Imaging at 7 Tesla
Published on: January 6, 2019
Ultra high spatial and temporal resolution breast imaging at 7T.
B L van de Bank1, I J Voogt, M Italiaander
1Department of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands; Department of Radiology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.
NMR in Biomedicine
|October 19, 2012
Summary
Researchers developed a 7T unilateral breast MRI coil to improve breast lesion detection. This new coil enables simultaneous high spatial and temporal resolution imaging, enhancing diagnostic specificity.
Area of Science:
- Magnetic Resonance Imaging (MRI)
- Medical Imaging Technology
- Radiology
Background:
- Improving specificity in breast lesion detection via MRI is crucial.
- Current MRI techniques face limitations in simultaneously achieving high spatial and temporal resolution.
- Ultra-high spatial resolution is often sacrificed due to time constraints during contrast uptake, while functional imaging resolution limits small lesion detection.
Purpose of the Study:
- To develop and test a 7T unilateral breast MRI coil system for simultaneous high spatial and temporal resolution imaging.
- To enhance signal-to-noise ratio (SNR) and enable effective acquisition acceleration for improved breast MRI.
- To merge morphological imaging with Dynamic Contrast-Enhanced (DCE)-MRI and acquire high-resolution functional imaging with reduced distortion.
Main Methods:
- Development of a unilateral breast coil for 7T MRI, featuring a dual-channel transmit coil and a 30-channel receive array.
- Utilizing high-density coil elements for efficient acceleration in multiple directions.
- Acquisition of ultra-high spatial resolution (0.6 mm isotropic) and high spatial resolution (1.5 mm isotropic) MRI, alongside low-distortion Diffusion Weighted Imaging (DWI) at 7T.
Main Results:
- Achieved ultra-high spatial resolution MRI (0.6 mm isotropic) with a temporal resolution of 69 seconds.
- Acquired high spatial resolution MRI (1.5 mm isotropic) with an ultra-high temporal resolution of 6.7 seconds.
- Demonstrated low-distortion DWI at 7T and validated the system in phantoms, healthy volunteers, and a patient with a BI-RADS IV lesion.
Conclusions:
- The developed 7T unilateral breast coil system successfully enables simultaneous high spatial and temporal resolution MRI.
- This technology advances breast MRI by improving lesion detection capabilities and reducing image distortion.
- The system shows significant potential for enhanced diagnostic accuracy in breast cancer screening and evaluation.
