X-ray ct apparatus, control method by x-ray ct apparatus, and storage medium

An X-ray CT apparatus comprising:

• a scanner unit having an imaging system;
• a support unit that supports the scanner unit and configured to move the scanner unit in a vertical direction;
• and
• processing circuitry configured to:
• define at least part of an area between an outer periphery of an opening into which a subject is inserted and the subject as a detection area and detect that the subject is present in the detection area or that an object other than the subject is present in the detection area;
• and
• stop an operation of the scanner unit when it is detected that the subject is present in the detection area while the scanner unit is operating, wherein
• the processing circuitry does not perform control to stop the operation of the scanner unit when it is detected that the object other than the subject is present in the detection area.

A control method by an X-ray CT apparatus comprising a scanner unit having an imaging system, and a support unit that supports the scanner unit and configured to move the scanner unit in a vertical direction, the control method comprising:

• performing control to:
• defining at least part of an area between an outer periphery of an opening into which a subject is inserted and the subject as a detection area and detecting an object present in the detection area;
• and
• defining an area in which movement of the subject is restricted as a non-detection area;
• and
• stopping an operation of the scanner unit when it is detected that the object is present in the detection area excluding the non-detection area while the scanner unit is operating.

A non-transitory computer readable medium comprising instructions that cause a computer of an X-ray CT apparatus, the X-ray CT apparatus comprising a scanner unit having an imaging system, and a support unit that supports the scanner unit and configured to move the scanner unit in a vertical direction, to execute:

• performing control to:
• defining at least part of an area between an outer periphery of an opening into which a subject is inserted and the subject as a detection area and detecting an object present in the detection area;
• and
• defining an area in which movement of the subject is restricted as a non-detection area;
• and
• stopping an operation of the scanner unit when it is detected that the object is present in the detection area excluding the non-detection area while the scanner unit is operating.