Abstract: After the introduction of the working principle of digital subtraction angiography （DSA） bulb tube, through the analysis of three typical faults of DSA bulb tube, the main causes of the faults were found, and the common fault types of DSA bulb tube were summarized. It was concluded that when installing a new bulb tube, it was necessary to check the wiring of the oil pump carefully, and carry out the necessary training and preheating of the bulb tube to ensure its stable operation. Finally the maintenance and acceptance procedures and standards of the various parts of DSA bulb tube were described in detail.

Key words: Digital subtraction angiography, Bulb tube fault, Preventive maintenance, Filament open circuit, Acceptance criteria