Mri system, mri apparatus, and mri method

An MRI system comprising:

• a pressure device configured to externally pressure a blood vessel of an object;
• a scanner configured to perform imaging on the object;
• and
• processing circuitry configured to
• control the pressure device in such a manner that ischemia and reperfusion are caused with respect to the object,
• determine a start timing of the imaging based on a state of pressurization caused by the pressure device,
• cause the scanner to perform the imaging on the object in accordance with the start timing, and
• generate an image by using data acquired in the imaging.

An MRI method comprising:

• pressuring a blood vessel of an object to cause ischemia and reperfusion in the object;
• determine a start timing of imaging based on a state of pressurization of the blood vessel;
• imaging the object in accordance with the start timing;
• and
• generating an image by using data acquired in the imaging.