Nuclear ventriculography

定义

Nuclear ventriculography is a test that uses radioactive materials called tracers to show the heart chambers. 程序如下 非侵入性. The instruments do not directly touch the heart.

选择的名字

Cardiac blood pooling imaging; Heart scan - nuclear; Radionuclide ventriculography (RNV); Multiple gate acquisition scan (MUGA); 核心脏病学; Cardiomyopathy - nuclear ventriculography

How the Test is Performed

The test is done while you are resting.

The health care provider will inject a small amount of radioactive material called technetium into your vein. This substance attaches to red blood cells and passes through the heart.

The red blood cells inside the heart that carry the material form an image that a special camera can pick up. These scanners trace the substance as it moves through the heart area. The camera is timed with an 心电图. A computer then processes the images to make it appear as if the heart is moving.

How to Prepare for the Test

You may be told not to eat or drink for several hours before the test.

考试的感觉如何

You may feel a brief sting or pinch when the IV is inserted into your vein. Most often, a vein in the arm is used. You may have trouble staying still during the test.

Why the Test is Performed

The test will show how well the blood is pumping through different parts of the heart.

正常的结果

Normal results show that the heart squeezing function is normal. The test can check the overall squeezing strength of the heart (ejection fraction). A normal value is above 50% to 55%.

The test also can check the motion of different parts of the heart. If one part of the heart is moving poorly while the others move well, it may mean that there has been damage to that part of the heart.

What Abnormal Results Mean

Abnormal results may be due to:

• Blockages in the coronary arteries (coronary artery disease)
• 心脏瓣膜病
• Other cardiac disorders that weaken the heart (reduced pumping function)
• 既往心脏病发作(心肌梗死)

The test may also be performed for:

• Dilated cardiomyopathy
• 心脏衰竭
• Idiopathic cardiomyopathy
• Peripartum cardiomyopathy
• Ischemic cardiomyopathy
• Testing whether a medicine has affected heart function

风险

Nuclear imaging tests carry a very low risk. Exposure to the radioisotope delivers a small amount of radiation. This amount is safe for people who do not have nuclear imaging tests often.

参考文献

博格特J，西蒙斯R. Ischaemic heart disease. 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 15.

Dorbala S, Di Carli MF. 核心脏病学. In: Libby P, Bonow RO, Mann DL, Tomaselli GF, Bhatt DL, Solomon SD, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 12日艾德. Philadelphia, PA: Elsevier; 2022:chap 18.

Kramer CM, Beller GA, Hagspiel KD. Noninvasive cardiac imaging. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26日艾德. Philadelphia, PA: Elsevier; 2020:chap 50.

Mettler FA, Guiberteau MJ. 心血管系统. In: Mettler FA, Guiberteau MJ, eds. Essentials of Nuclear Medicine and Molecular Imaging. 7日艾德. Philadelphia, PA: Elsevier; 2019:chap 5.