Digital imaging to erase the background of cerebral arteries

The article was professionally consulted by Specialist Doctor I Vo Cong Hien - Radiologist - Radiology Department - Vinmec Nha Trang International General Hospital.

Cerebral angiography using a digitized background eraser allows the diagnosis and detection of cerebrovascular diseases or suspicion of accidental injuries causing brain artery damage.

Cerebral angiography using a digital background eraser is an imaging technique that uses iodinated contrast to clear the background, thereby showing clearly the entire structure of the cerebrovascular system including arteries, veins and capillaries. circuit. Thereby, allowing detection and assessment of blood circulation in the brain.

Cerebral angiography using a digital background eraser is indicated in the following cases:
Diagnosis of diseases related to cerebrovascular malformations such as cerebral aneurysm, cerebral artery stenosis, cerebral arteriovenous catheterization, ...caused by vasculitis or atherosclerosis or acute cerebral artery occlusion, cavernous carotid artery dissection. Assess the blood supply to the brain tumor. Experimental evaluation of collateral circulation prior to embolization. Serving radiological intervention and diagnosis before interventional treatment.

Digital scan of cerebral artery background is performed with the following steps:
Step 1: Anesthetize the patient by placing the patient supine on the scanning table, setting up an intravenous line, and administering local anesthesia. For cases that cannot cooperate or are stimulated, fear can inject pre-anesthetic drugs for general anesthesia before the procedure. Step 2: The technique used to insert the catheter into the artery is Seldinger, the entry from the femoral artery. Only when access from the femoral artery is not possible should an alternative route of entry be selected, that is, the axillary artery, brachial artery, or the radial, primary carotid artery.

Step 3: Disinfect and anesthetize the needle puncture site to insert the catheter into the artery. Cerebral angiography included the internal and external carotid arteries and the vertebral arteries. Insert the catheter to the desired location and inject iodinated contrast medium with different volumes, speeds, and pressures. For the internal carotid artery, insert the catheter into the lumen and into the internal carotid artery, inject the drug with a volume of 10 ml, a rate of 4 ml/s and a pressure of 500 PSI; then continuously take and focus on the cranial area in straight, 45 degree and completely tilted positions. For the external carotid artery, insert the catheter into the lumen and into the external carotid artery, inject the drug with a volume of 8 ml, a rate of 3 ml/s and a pressure of 500 PSI; then, focusing on the cranial area in 2 positions straight and completely tilted at 2-3 frames/s. Finally in cerebral angiography is the vertebral artery, insert the Vertebral 4-5F catheter into the artery lumen to the left vertebral artery, inject the drug with a volume of 8ml, speed 3ml/s, pressure 500PSI ; then continuously take and focus on the posterior fossa cranial area in straight, 25-degree, 45-degree and full-tilt positions. During the imaging process, depending on the suspected pathology, 3D imaging can be performed. Step 4: Finish the cerebral angiogram after meeting the requirements. Withdraw the catheters and tubes, stop bleeding for the patient, apply pressure directly on the puncture site and hold for 15 minutes, then apply pressure for 8 hours, or you can also use specialized tools to close the needle. way into the blood vessel. The results of cerebral angiography by digitizing the background erasing machine using iodinated contrast must clearly show the structure of the arterial system inside the skull including the internal carotid artery, the vertebral artery, the anterior and middle cerebral arteries and the vertebral artery. behind both sides. The results allow to detect damage if any such as aneurysm, narrowing of the artery, etc., thereby helping the doctor to choose the method of emergency examination and treatment right away in the known pathology through CT examination or vascular MRI. brain hemorrhage due to rupture of aneurysms or aneurysms at risk of rupture, acute cerebral artery occlusion, cavernosal carotid artery catheterization...
Cerebral angiography using a digital background eraser is a diagnostic imaging technique. Modern imaging allows doctors to diagnose diseases related to cerebral blood vessels and suspect accidental injury causing damage to cerebral blood vessels.
Digitization of cerebral artery background is an imaging technique that requires a high level of experience of the doctor and the perfect coordination of the patient. In order to achieve high diagnostic efficiency, patients need to choose reputable addresses that have digital scanning machines to erase the background and have modern and standard medical equipment from which to have timely treatment.

Vinmec International General Hospital is a hospital with a full convergence of general and specialized doctors to perform, examine, operate, diagnose and treat diseases. In particular, at Vinmec, digital imaging techniques are performed to remove the background to diagnose images, thereby offering treatment plans for many different diseases and providing optimal treatment results for customers. Basically, after conventional cerebral vascular intervention, the patient's hospital stay is quite short, only 3-5 days, which greatly reduces the cost for the patient.
BSCK I Vo Cong Hien has many years of experience in the field of imaging, especially in diagnostic ultrasound for general abdominal diseases, advanced cardiac - vascular, obstetrics and gynecology. Doctor Vo Cong Hien used to work at the Imaging Department of the University of Medicine and Pharmacy Hospital - Hoang Anh Gia Lai before working at the Imaging Department of Vinmec Nha Trang International General Hospital.
To register for examination and treatment at Vinmec International General Hospital, you can contact Vinmec Health System nationwide, or register online HERE.

In April & May 2021, when there is a need for examination and treatment of cerebral aneurysms at Vinmec Times City International Hospital and Vinmec Da Nang International General Hospital, customers will enjoy preferential treatment. Double:
- Free specialist examination and free x-ray
- 50% discount on costs for customers with appointment of post-examination treatment. The program is limited to the corresponding technique of each hospital and to customers who perform this treatment technique for the first time at Vinmec.