X-ray diagnostic imaging apparatus, monitoring server and anomaly detection method

An anomaly detection method of detecting an anomaly in an X-ray diagnostic imaging apparatus including an X-ray tube that irradiates an object with X-rays, an X-ray detector that detects X-rays having been transmitted through the object, and an image creation unit that creates a medical image of the object on the basis of the output of the X-ray detector, the method comprising:

• a measurement step of measuring a change amount of an X-ray focal point which is an X-ray generation point of the X-ray tube;
• and
• an anomaly detection step of detecting an anomaly in the X-ray tube on the basis of whether or not the change amount falls within a predetermined normal change range,
• wherein the anomaly detection step includes a comparison step of comparing the change amount with the normal change range correlated with scanning conditions when the change amount is measured, so as to determine the presence or absence of an anomaly in the X-ray tube.