Among all the medical imaging modalities, Ultrasound Imaging (UI) is widely used due to its cost-efficiency and safety. However, one of the main impediments of this modality is its poor image quality. Thus, various beamforming techniques have been proposed to compensate for this issue. Delay-and-Sum (DAS) beamformer is a commonly used algorithm because of its simplicity. Its reconstructed images suffer from poor resolution and contrast. Recently, the Filtered Delay-Multiply-and-Sum (F-DMAS) beamformer was suggested to provide better image quality than the DAS beamformer. Moreover, Double-Stage DMAS (DS-DMAS) technique leads to lower sidelobes in comparison with F-DMAS. Additionally, Short-Lag DMAS (SL-DMAS) beamformer has provided new insights into the relation between the performance of the F-DMAS algorithm and the spatial-coherence of backscattered signals.