1. Which of the following is not the advantage of DSA:
A. High density resolution
B. Less contrast agent
C. Unable to store
D. Providing more blood vessel information
2. Among the following DSA imaging functions, What has nothing to do with rotary DSA is:
A.3D-Raodmap
B. Vascular endoscope
C.3D-DSA
D. Step-by-step DSA
3. Image blur effect mitigation DSA is:
A.X-ray plain film system combined with computer digital image system
B.X-ray TV system.
the combination of c.x-ray plain film system and angiography system
the combination of d.x-ray television system and angiography system
4. The most common locations for arterial DSA vascular puncture are:
a. Right brachial artery
b. Right femoral artery in inguinal region
c. Left femoral artery in inguinal region
5. DSA Left brachial artery < The shortcomings of cervical spondylosis with broken vertebral artery are:
A. The diagnosis of localized compression and dynamic compression is accurate
B. The positioning of intervertebral space under fluoroscopy is accurate
C. It is easy to judge the source of vertebral artery compression
D. For diffuse vertebral artery lesions, Its sensitivity is high
6. The following are not the direct signs of DSA of pulmonary embolism: < P > A. Filling defect in pulmonary artery cavity < P > B. weeping willow sign < P > C. Pulmonary artery trunk obstruction < P > D. Pulmonary artery branch stenosis < P > Reference answer and analysis
1. Analysis: DSA can store.
2. refer to answer D. Step-by-step angiography is a one-time injection of contrast agent, and the image of the whole lower limb blood vessels and branches is obtained by automatic tracking angiography, which is a two-dimensional image. In other options, three-dimensional image data must be obtained before image processing can be performed.
3. refer to answer B. Analysis: Investigating DSA Chinese DSA is the combination of X-ray TV system and computer digital image system.
4. refer to answer B. Analysis: The most commonly used part of arterial puncture is the femoral artery in the right inguinal region, where the femoral artery is thick in diameter, shallow in position and easy to fix, and there are no important organs around it. It is convenient and safe for doctors to puncture and compress to stop bleeding, and the incidence of complications is low.
5. refer to answer D. Analysis: DSA examination of vertebral artery is accurate in the diagnosis of localized compression and dynamic compression, accurate in the positioning of intervertebral space under fluoroscopy, and easy to judge the source of vertebral artery compression. In addition, DSA examination can take special positions and repeat the operation in multiple positions. The disadvantage is invasive examination, and there are restrictions on the side effects and dosage of contrast agent. Compared with MRA, the sensitivity of diffuse vertebral artery lesions, such as vertebral artery tortuosity caused by vertebral instability, has no significant advantage. For diffuse vertebral artery lesions, its sensitivity is low.
6. refer to answer B. Analysis: the direct signs of DSA of pulmonary embolism include filling defect in pulmonary artery cavity; Double track sign appears; Obstruction and stenosis of pulmonary artery trunk or branch; The wall of pulmonary artery is irregular and uneven.
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