Self-gating techniques can be used to solve and compensate for cardiac or respiratory motion during MRI with free-breathing. In this work, a self-gating based motion correction scheme is proposed, and combined with a 3D variable-flip-angle TSE sequence for high-efficiency thoracic aorta imaging. Specifically, the slab-selective SPACE sequence is modified to acquire self-gating signals, which are used for detecting the respiratory motion. The image data is subsequently corrected based on the binning motion correction and image registration approach. The comparison was conducted on healthy volunteers and compared against a conventional diaphragmatic navigator-gated acquisition to assess the feasibility of the proposed scheme.