Traditional Culture Encyclopedia - Photography major - How to calculate arteriovenous circulation time in cerebral angiography
How to calculate arteriovenous circulation time in cerebral angiography
The calculation of arteriovenous circulation time can be realized by observing the movement of contrast agent in vascular system. The specific steps are as follows:
1. Inject contrast agent into the patient: After injecting contrast agent, observe the diffusion of contrast agent in the vascular system through continuous X-ray photography or computed tomography (ct).
2. Observe the perfusion and emptying of blood vessels: Observe the time when arteries and veins are filled with contrast agent and the time when contrast agent is emptied by continuous shooting or scanning.
3. Calculate the circulation time of artery and vein: the circulation time of artery refers to the time when artery is filled with contrast agent, and the circulation time of vein refers to the time when contrast agent drains from artery to vein. By observing the continuous angiographic images, these two time points can be accurately measured, so as to calculate the circulation time of the outflow vein.
It should be noted that there may be some errors in the calculation of arteriovenous circulation time in practical application, because the vascular system structure and contrast agent propagation speed of each patient may be different. Therefore, in clinical application, it is necessary to combine clinical symptoms and other imaging examination results for comprehensive judgment. If you have specific symptoms, it is recommended to consult a professional doctor to get an accurate answer.
- Previous article:Selected skills of conference news photography
- Next article:Baby photo contest
- Related articles
- What are the tourist attractions in Guiyang in May?
- How to find HD material? Which website can find HD?
- Peacock King Daming Bodhisattva Photography
- Is there anything delicious and interesting in Zhangmutou Town, Dongguan?
- How to write the copy of the school advertisement wall
- How do men and women soldiers on warships live?
- Mikan Ryu's profile?
- Who do you like best in the ninth season of Super Brain?
Now, Super Brain has gone through eight seasons and is about to usher in the ninth season.
- There are people on the shoulders of Thai horror movies.
- Chongqing senior self-driving photography