The mri is MRI magnetic resonance imaging. MRI examination is able to detect kidney stones. Kidney stones are stones deposited in the human renal system, and they can usually be detected by X-ray, ultrasound, CT, and MRI. However, in general for the examination of kidney stones, the resolution of magnetic resonance imaging is not as good as CT, and the cost is more expensive, so it is usually not as the first choice of kidney stone examination. Clinically for patients suspected of having kidney stones, the first choice is usually to do ultrasound examination of the urinary tract, because ultrasound is not radiation, and the cost is relatively inexpensive, the examination is fast. If it is more complex urinary stones or need to carry out surgical treatment of the patient is recommended to carry out CT examination, to further clarify the specific positioning of the stone and size. Since kidney stones may cause urinary tract infections or even affect normal kidney function, patients with kidney stones are advised to actively cooperate with their doctors in order to recover as soon as possible.