Thoracic aortic diseases are one of the most common causes of cardiovascular morbidity and mortality, where imaging plays a central role in diagnosis. As a noninvasive technique, MR imaging has the potential to provide a comprehensive evaluation of the thoracic aorta from various aspects. However, clinical adoption of this modality is hindered by several limitations, i.e. long scan time and cumbersome setup for accommodating motion during data acquisition. In this work, we present an MR MultiTasking based 3D Multi-dimensional Assessment of Cardiovascular System (MT-MACS) technique that allows for ECG- and navigator-free thoracic aortic imaging within 6 minutes.