Dual element X-nuclei coil for high B1 and excellent signal to noise on the chest and abdomen: Our dual element 20 cm coils offers very high transmit B1 efficiency compared with larger (clam-shell style) coils and gives good coverage and high signal to noise ratio for applications in the chest and abdomen, particularly the heart, lungs, liver and kidneys. This coil is ideal for hyperpolarised MRI and is compatible with PET/MRI systems as well as many other multinuclear applications.