Balanced radionuclide ventriculography

1. Diagnosis and cardiac function evaluation of myocardial ischemia in coronary heart disease. 2. Observation of cardiac function, timing of surgery and prognosis of heart disease before and after treatment of heart disease. 3. Diagnosis of ventricular aneurysm. 4. Diagnosis of abnormal ventricular conduction. 5. Auxiliary diagnosis of cardiomyopathy and myocarditis and evaluation of cardiac function. Treatment of diseases: coronary heart disease Indication 1. Diagnosis and cardiac function evaluation of myocardial ischemia in coronary heart disease. 2. Observation of cardiac function, timing of surgery and prognosis of heart disease before and after treatment of heart disease. 3. Diagnosis of ventricular aneurysm. 4. Diagnosis of abnormal ventricular conduction. 5. Auxiliary diagnosis of cardiomyopathy and myocarditis and evaluation of cardiac function. Contraindications 1. Patients with arrhythmia are not suitable for this examination. 2. Although the cardiac function is accurate, it is necessary to choose this test carefully because of the invasive examination and the exercise stress test. Preoperative preparation 1. Before the examination, introduce the purpose, method and precautions to the examinee and obtain the cooperation of the patient. 2. The medical history and physical examination should be carefully asked before the examination, and the rescue measures should be prepared. Emergency medicine should be available. An intravenous fluid circuit should be established if necessary. Pre-established treatments such as patient transport and access to the coronary care unit in the event of an acute cardiac event. 3. Stop taking -blockers and nitrates 1 day before the test. Surgical procedure (1) Imaging agent: Commonly used 99mTc-labeled red blood cells, and 99mTc-labeled DTPA can also be used to couple human serum albumin (DTPA-HSA). (2) resting imaging 1 Imaging was started 15 to 20 minutes after intravenous injection of the imaging agent. 2 Connect the ECG lead. 3 Routine acquisition of LAO45°, Ant, LL three position images, if necessary, add RAO30° image. The angle of LAO45° imaging is based on the best separation of left and right ventricular images. The left and right ventricular function can only be calculated from the image of the LAO45° position. The collection process takes about 15 to 20 minutes. (3) Load (exercise or drug) imaging 1 Normal human coronary artery has a strong reserve capacity. In the state of load, the coronary artery cannot be effectively dilated like a normal artery, and the blood flow in the perfusion area is significantly lower than that of the normal myocardium, which not only causes the supply and demand of local myocardial oxygen to be mismatched, but also destroys the entire wall contraction and relaxation. The result of coordination is that the entire heart function is not as enhanced as normal people, and sometimes it is reduced, especially the reduction of local wall motion. Therefore, the wall chamber movement, especially the local wall motion and cardiac function response to the load can be used to determine the coronary reserve capacity and early diagnosis of coronary heart disease. 2 After the resting imaging of the LAO 45° position, the movement or drug load test is performed at the LAO 45° position, and the 2 min image is immediately collected when the prescribed index is reached, and the patient is required to maintain the load state until the collection is completed. During the exercise or drug trial, the patient is required to keep his body as far as possible so as not to affect the image quality.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.