Abstract #4172

Dedicated 3-Channel Surface Coil for Interventional Magnetic Resonance Imaging at 3T - First Evaluation

Lena Sonnow^1,2,3, Wesley D Gilson⁴, Arne Hengerer⁵, Clifford R Weiss¹, Himanshu Bhat⁵, Frank Wacker^2,3, and Jan Fritz¹

¹Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, United States, ²Department of Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany, ³Research Campus STIMULATE, Hannover, Germany, ⁴Siemens Healthcare USA, Baltimore, MD, United States, ⁵Siemens Healthcare USA, Malvern, PA, United States

We developed a dedicated interventional MRI coil with 3 receiver channels and a wide central aperture for interventional access, which we benchmarked against a 4-channel system surface coil. We assessed signal-to-noise-ratios (SNR), geometry (g)-factors and instrument artifact size in a phantom and 100 subjects. The interventional MRI prototype coil produced similar SNR values and g-factors than the 4-channel system coil. There was no significant difference in artifacts, which were suitable for accurate and safe procedures. The central aperture of the interventional MRI prototype coil improved access and the coil performed error-free during a large variety of interventional MRI procedures.

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