This is an automatically translated article.
The article was consulted with Specialist Doctor I Vo Cong Hien - Radiologist - Diagnostic Imaging Department - Vinmec Nha Trang International General Hospital.DSA background erasure angiography helps detect blood vessel abnormalities early, pinpointing damaged blood vessel locations. DSA background angiography is now considered a "golden procedure" in imaging techniques for vascular pathology.
1. DSA . background removal angiography technique
DSA (Digital Subtraction Angiography) angiography technique is based on the principle of using fluorescent light and X-rays to take pictures of blood vessels at the sites to be checked before contrast is injected and after contrast is injected. light into the blood vessel to be scanned. The computer will then blur the background images to clarify the vascular system.
A DSA capture system includes components: X-ray generator, image receiver, digital image processor, display unit,... In which, digital image processor (digital image processor) processing system) is the central part of the system. To perform background erasure angiography, the machine will take an initial image of the patient's blood vessels before contrast is injected. Then, a catheter will be inserted into the femoral artery up to the artery to be examined to inject contrast. Contrast has the effect of brightening blood vessels, is not harmful and will be excreted in the urine. The system will record the process of acquiring an animated image when the contrast material is introduced into the body for a set period of time. Based on the similar anatomical structures between the two images, the processing unit will take the original image without contrast as the background image and proceed to exclude the background image with the image obtained when the contrast is present.
Hình ảnh chụp mạch máu xóa nền DSA mạch máu não
Currently, DSA background angiography is applied in many diagnoses and interventions such as:
Diagnosis and treatment of cerebral aneurysms, cerebral vascular malformations, and internal and external arteriovenous shunts. skull, intracranial and extracranial vascular-rich tumors. Emergency intervention to remove cerebral artery thrombosis in cerebrovascular embolism stroke. Diagnosis and treatment of spinal and spinal vascular diseases Diagnosis and intervention of abnormalities of the aorta, renal artery, carotid artery, limb artery and peripheral artery. Cardiac catheterization, closure of cardiac catheterization, angioplasty, intra-aortic balloon counterpulsation. Exploration and treatment of electrophysiology, uterine tumor, liver cancer, brain tumor, cerebrovascular abnormalities,... Place vena cava filter, pacemaker, remove foreign body in circulatory system, ultrasonography echoes in the blood vessels and chambers of the heart.
2. Advantages of DSA . background removal angiography
DSA background angiography is now considered a "golden procedure" in vascular imaging techniques. Background erasure angiography (DSA) helps to provide accurate information about blood circulation as it passes through parts of the body, especially the blood supply to the brain and heart. The technique helps to detect abnormalities of blood vessels early, facilitating the doctor to accurately diagnose diseases related to blood circulation in the body, accurately determining the location of damaged blood vessels, from which early treatment and intervention plan. Many cases of patients with serious cardiovascular diseases such as myocardial infarction, cerebrovascular accident, etc., thanks to the DSA scan, were accurately diagnosed and intervened in time, so their lives were saved.
Chụp DSA động mạch não cho thấy phình mạch dạng túi (mũi tên)
DSA scan also plays an important role in supporting minimally invasive thoracic endoscopic surgery. Under the guidance of vascular imaging, minimally invasive cardiothoracic surgery is performed to help patients reduce pain, reduce bleeding, reduce the risk of complications, and speed up recovery. reduce hospital stay. Unlike open surgery, the scars of laparoscopic surgery are very small and translucent, bringing high aesthetics to the patient.
Vinmec International General Hospital with a system of modern facilities, medical equipment and a team of experts and doctors with many years of experience in neurological examination and treatment, patients can completely peace of mind for examination and treatment at the Hospital.
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