... machine, medical ultrasoundRicso Portable UltrasoundModel: Aurora-A1 1,General Descriptions Image mode B,B+B,4B,B+ M Scanning Depth ≥200mm ... (DRF)Dynamic Frequency Scan(DFS)Tissue Harmonic Imaging (THI) 2,Image processing Gray-scale suppressionGray mappingScanning angle selectionγ-correctionLeft-right reverseUp-down ...