Abstract #5226

Adaptive combine reconstruction of sodium MRI data of breast and knee at 7 T: optimization and comparison to sum-of-square reconstruction.

Lenka Minarikova^1,2, Stefan Zbyn^1,2,3, Olgica Zaric^1,2, Stephan Gruber^1,2, Armin Nagel^4,5, and Siegfried Trattnig^1,2

¹High Field MR Centre, Department of Medical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria, ²Christian Doppler Laboratory for Clinical Molecular MR Imaging, Vienna, Austria, ³Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland, ⁴Institute of Radiology, University Hospital Erlangen, Erlangen, Germany, ⁵Division of Medical Physics in Radiology, German Cancer Research Centre (DKFZ), Heidelberg, Germany

In this work, adaptive combine (AC) reconstruction was optimized on breast and knee sodium MRI data, acquired with a 14-channel breast and a 15-channel knee coils. AC reconstruction was compared with the standard sum-of-square (SoS) reconstruction. The optimal reconstruction parameters were: the lowest interpolation factor of two and an overlap of the analysis block of two to eight pixels. Images reconstructed using the AC had lower noise floor when compared to the SoS. However, when a multichannel coil with low noise correlation between elements is used, the advantage of AC reconstruction decreases.

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