静脉造影-腿部

定义

静脉造影术 for legs is a test used to see the veins in the leg.

x射线 are a form of electromagnetic radiation, like visible light is. However, these rays are of higher energy. Therefore, they can go through the body to form an image on film. Structures that are dense (such as bone) will appear white, 空气会变黑, and other structures will be shades of gray.

Veins are not normally seen in an x-ray, so a special dye is used to highlight them. This dye is called contrast.

选择的名字

Phlebogram - leg; 静脉造影术 - leg; Angiogram - leg

How the Test is Performed

This test is usually done in a hospital. You will be asked to lie on an x-ray table. A numbing medicine is applied to the area. You may ask for a sedative if you are anxious about the test.

The health care provider places a needle into a vein in the foot of the leg being looked at. An 静脉注射 (IV) line is inserted through the needle. The contrast dye flows through this line into the vein. A tourniquet may be placed on your leg so the dye flows into the deeper veins.

x射线 are taken as the dye flows through the leg.

The catheter is then removed, and the puncture site is bandaged.

How to Prepare for the Test

You will wear hospital clothing during this procedure. You will be asked to sign a consent form for the procedure. Remove all jewelry from the area being imaged.

告诉供应商:

• 如果你怀孕了
• 如果你有 allergies to any medicines
• Which medicines you are taking (including any herbal preparations)
• 如果你有 ever had any 过敏反应 to x-ray contrast material or iodine substance

How the Test will Feel

The x-ray table is hard and cold. You may want to ask for a blanket or pillow. You will feel a sharp poke when the 静脉注射 catheter is inserted. As the dye is injected, you may experience a burning sensation.

There may be tenderness and bruising at the site of the injection after the test.

Why the Test is Performed

This test is used to identify and locate 血凝块 in the veins of the legs.

正常的结果

Free flow of the blood through the vein is normal.

What Abnormal Results Mean

Abnormal results may be due to a blockage. The blockage can be caused by:

• 血凝块
• 肿瘤
• 炎症

风险

风险 of this test are:

• Allergic reaction to the contrast dye
• 肾功能衰竭, especially in the older adults or people with diabetes who take the medicine metformin (Glucophage)
• Worsening of a clot in the leg vein

There is low radiation exposure. However, most experts feel that the risk of most x-rays is smaller than other daily risks. Pregnant women and children are more sensitive to the risks of the x-ray.

注意事项

超声波 is used more often than this test because it has fewer risks and side effects. MRI and CT scans may also be used to look at the veins in the leg.

参考文献

Ameli-Renani S, Belli A-M, Chun J-Y, Morgan RA. Peripheral vascular disease intervention. In: Adam A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. 格兰杰 & Allison's Diagnostic Radiology: A Textbook of Medical Imaging. 7日艾德. Philadelphia, PA: Elsevier; 2021:chap 80.

Bechara CF. 静脉造影术. In: Sidawy AN, Perler BA, eds. Rutherford's Vascular Surgery and Endovascular Therapy. 10日艾德. Philadelphia, PA: Elsevier; 2023:chap 28.