Knowledge

Cardiovascular angiography is to quickly inject a transparent contrast agent containing organic compounds into the bloodstream under X-ray irradiation.

Explain the purpose of the angiography and possible complications and accidents to the patient and family members, and sign the angiography agreement.

DSA technology has great diagnostic value in cerebrovascular diseases and brain tumors. It is mainly used to check the origin of the carotid artery.

Compared with the traditional film, DSA technology significantly reduces the use of contrast agent, saves the dose.

The subtraction process of DSA is carried out in four sequences: filming a normal film, preparing a mask image, filming an angiography film.

High-voltage generator: using intermediate frequency or high-frequency technology, controlled by a microprocessor.

The X-ray digital subtraction angiography machine enhances the signal of the uncontrasted image after passing through the human body.