X-RAY COMPUTED TOMOGRAPHY IMAGING APPARATUS AND X-RAY TUBE APPARATUS

摘要

According to one embodiment, an X-ray computed tomography imaging apparatus includes an X-ray tube, an X-ray detector, and control circuitry. The X-ray tube includes a cathode configured to generate thermoelectrons, an anode configured to generate X-rays upon receiving the thermoelectrons from the cathode, and a regulator configured to apply an electric field or a magnetic field to focus or bias the thermoelectrons from the cathode. The X-ray detector detects the X-rays generated by the anode. The control circuitry controls the regulator to switch at least one of the size and position of the focus of the thermoelectrons from the cathode on the anode between scan and warm-up.

主权项

1. An X-ray computed tomography imaging apparatus comprising:
an X-ray tube including a cathode configured to generate thermoelectrons, an anode configured to generate X-rays upon receiving the thermoelectrons from the cathode, and a regulator configured to apply an electric field or a magnetic field to focus or bias the thermoelectrons from the cathode; an X-ray detector configured to detect the X-rays generated by the anode; data acquisition circuitry configured to acquire data corresponding to the X-rays detected by the X-ray detector; image generation circuitry configured to generate an image based on the acquired data; and control circuitry configured to control the regulator to switch at least one of a size and a position of a focus of the thermoelectrons from the cathode on the anode between scan and warm-up.