Organ contrast echocardiography

Acoustic angiography, also called contrast-enhanced ultrasound, is an intravenous ultrasound contrast agent that enters the human body. Its main advantage is the ability to clearly show microcirculation perfusion of tissue. Based on this feature, the ultrasound diagnostic doctor makes a more accurate differential diagnosis based on the difference of blood perfusion of benign and malignant tumors, and also greatly improves the detection rate of early tumors and satellite lesions of malignant tumors. Its application is one of the most advanced medical imaging technologies in the world and a revolutionary advancement in ultrasound imaging. It has the unique advantages of real-time dynamic observation, high resolution, non-invasive, no X-ray radiation, good repeatability and other imaging medical imaging technologies. Basic Information Specialist classification: Oncology examination classification: ultrasound Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: (1) The method of blasting microbubbles is usually used to obtain rich harmonics. The myocardial perfusion image can be obtained by blasting contrast harmonic imaging by ECG triggering; in the abdominal organs such as the liver, manual triggering is used to obtain the phase image of the contrast agent for tumor perfusion. (2) Low mechanical index imaging can achieve continuous flow imaging of blood flow, and can also reduce interference of tissue harmonics. This technique uses a second generation contrast agent. Positive: Contrast-enhanced ultrasonography can clearly show the microcirculation blood perfusion characteristics of the tumor, so it can make a clear qualitative diagnosis of the tumor's benign and malignant. By achieving a level of tumor microcirculation development, ultrasound contrast can clearly show tiny tumors or other tiny masses. Contrast-enhanced ultrasound can clearly show lesions such as stenosis, occlusion, and vascular malformation. For traumatic bleeding caused by trauma, the location and extent of bleeding can be clearly shown. It can enhance the development of the entire heart chamber, so the endocardial edge will be more clearly depicted. Tips: Follow the doctor's advice and cooperate with the doctor to prepare for the test. Normal value In addition to conventional contrast harmonic imaging, ultrasound contrast imaging also includes intermittent ultrasound imaging, energy contrast harmonic imaging, inverse pulse harmonic imaging, stimulated acoustic emission imaging, low mechanical index imaging, and contrast blasting imaging. Regardless of the method used, an ultrasound device capable of contrast imaging must have sufficient bandwidth and high dynamic range to provide sufficient parameters such as contrast time, MI and sound intensity, and real-time dynamic hard disk storage. (1) Contrast agent blasting imaging method When using the first generation of contrast agent, in order to observe the distribution information of contrast agent in vascular organs and tissues, blasting microbubbles are usually used to obtain rich harmonics. The myocardial perfusion image can be obtained by blasting contrast harmonic imaging by ECG triggering; in the abdominal organs such as the liver, manual triggering is used to obtain the phase image of the contrast agent for tumor perfusion. (2) Low mechanical index imaging When the transmitted ultrasound is used and its mechanical index MI is less than 0.15, it is called a low mechanical index. An angiogram using such ultrasound that is lower than the energy at which the microbubbles are broken is referred to as a low mechanical index angiography. This method can achieve continuous harmonic imaging of blood flow, and can also reduce the interference of tissue harmonics. This technique uses a second generation contrast agent. Clinical significance Indications: 1. Qualitative diagnosis and early detection of abdominal organs, small organs (thyroid, breast) and retroperitoneal tumors. For example, the preoperative examination of liver tumors can determine the number and location of satellite lesions, avoiding “grasping large and small” and improving the treatment effect. 2. A definitive diagnosis of vascular stenosis, occlusion or vascular malformation, and the judgment of benign and malignant thrombosis. 3. The definitive diagnosis of traumatic disease, ultrasound angiography in the closed bed of the suspected liver and spleen can be judged by observing the abnormal perfusion and aggregation of contrast agent in the liver and spleen parenchyma. 4. Guide and monitor minimally invasive interventional treatment of liver and other parenchymal organs, help to select appropriate interventional treatment window, avoid direct puncture damage to the subcapsular tumor of the liver and cause uncontrollable bleeding; ultrasound cystography before renal cyst interventional therapy Check suspiciously to determine the relationship between the cystic dark area and the collection system. 5. Unsatisfactory two-dimensional image of the heart, diagnosis of ischemic heart disease, and detection of cardiac occupying lesions such as tumors and thrombosis. Abnormal performance: contrast-enhanced ultrasound can clearly show the microcirculation blood perfusion characteristics of the tumor, so it can make a clear qualitative diagnosis of the tumor's benign and malignant. By achieving a level of tumor microcirculation development, ultrasound contrast can clearly show tiny tumors or other tiny masses. Contrast-enhanced ultrasound can clearly show lesions such as stenosis, occlusion, and vascular malformation. For traumatic bleeding caused by trauma, the location and extent of bleeding can be clearly shown. It can enhance the development of the entire heart chamber, so the endocardial edge will be more clearly depicted. Positive results may be diseases: liver tumors, ovarian tumors, bladder tumors Before the test: Since the contrast agent has no nephrotoxicity and cardiotoxicity, no skin test is required. When inspecting: Follow the doctor's advice and cooperate with the doctor. Inspection process Intravenous ultrasound contrast agent enters the human body, and the contrast agent is mainly discharged through the respiratory tract. Related studies have shown that it can be eliminated by breathing after about 15 minutes of injecting into the human body. Not suitable for the crowd Unsuitable people: Due to the high price, complicated operation of the equipment and certain complications, it is not currently a census means for people at high risk of cerebrovascular disease. Adverse reactions and risks Nothing.

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