Magnetic resonance imaging procedure with injection of non-specific contrast agent

The article is professionally consulted by Dr. Pham Quoc Thanh - Radiologist - Department of Diagnostic Imaging - Vinmec Hai Phong International General Hospital.

Magnetic resonance angiography with non-specific contrast injection is a special method used to detect diseases that are directly related to the lymphatic vessels and lymph nodes.

Magnetic resonance lymphatic system has been used since the 1990s. Magnetic resonance imaging has many advantages over lymphatic scintigraphy such as high spatial and temporal resolution, 3-D, exposure-free imaging. radiation like other conventional imaging methods. Magnetic resonance imaging in medicine is also abbreviated as MIR.
In addition to the advent of magnetic contrast agents and new techniques in magnetic resonance imaging, magnetic resonance imaging allows the evaluation of lymphatic vessels and lymph nodes.
Lymphatic resonance with injection of magnetic contrast agent into the interstitial tissue allows evaluation of anatomical structure as well as partial lymphatic system function. Engraftment of the lymphatic system (including blood vessels and lymph nodes) allows drainage pathways and sentinel lymph nodes to be identified as targets for biopsy.
In addition, it also has the ability to provide information about the status of lymphatic transport function to the lymphatic vessels and lymph nodes in the injured limb. Lymphatic MRI is currently considered the optimal, routine method in the evaluation of lymphedema in clinical practice.

It is an advanced diagnostic method with the most modern Silent technology today. The patient's body is not affected by radiation factors. Ensure biological safety. Sharp, clear, 3D-capable images are easy to diagnose. High resolution, showing better detailed images than CT scans. Contrast agents rarely cause side effects. Shooting time is shortened, noise is minimized. There is no need for contrast injection during angiography. Create comfort, reduce stress for the patient during the scan. Subjects using MRI can be the elderly, young children, people with weak health, people undergoing surgery,... Handling the patient's manipulations, taking 3-D vascular reconstruction without injections. . Maximum support for expert doctors to easily diagnose the patient's medical condition accurately to give the best treatment. Magnetic resonance imaging (MRI) of lymphatics diagnoses a variety of diseases related to the lymphatic system (including blood vessels and lymphatic vessels), especially lymphatic vasculitis.

Patients will undergo magnetic resonance angiography when there are signs directly related to the lymphatics (typically lymphatic vasculitis).
The patient may see red streaks on the surface of the skin from the infected area to the nearest lymph gland. They can be translucent or very clear and very small. These may extend from a wound or cut. In some cases, they may be accompanied by blisters.

Chills Swollen lymph nodes Fever Irritability or feeling unwell Loss of appetite Headache Muscle pain.

Before taking the scan, the patient needs to understand the following requirements:
No need to fast. The patient is carefully explained about the procedure to cooperate well with the doctor. Check for contraindications Instruct the patient to change into the MR dressing room and remove contraindicated items. Have a copy of the clinician's request for a scan with a clear diagnosis or complete medical record (if necessary) Patient position Place the patient on the examination table, place the patient's feet towards the machine frame, use Use a suitable receiver coil. Technicians can observe and communicate directly with the patient from the control room. Procedure The patient lies supine. Can be injected intradermally or subcutaneously Before injecting the contrast agent, dissolve Lidocaine 1% (1.5ml) into a 15ml Gd vial. Intradermal injection in the dorsal interphalangeal area at four points, the volume of each injection point is 0.7-0.8ml. After injection, massage at the injection site. Pulse sequences used: TSE, TSEFS, MIP. Dynamic imaging after injection with 3D T1W GRE pulse sequence at 5, 10, 15, 20, 25, 30 minutes after injection. Slice thickness: 2mm. Notes before lymphatic magnetic resonance imaging When feeling suspicious of lymphatic system damage, it is necessary to immediately go to medical centers to conduct medical examination. During the imaging process, patients are not allowed to use electromagnetic devices such as pacemakers, anti-vibration machines, cochlear implants, automatic drug pumping devices under the skin, etc. People who are afraid of the dark or fear of being alone is contraindicated with this method of magnetic resonance imaging. Lymphatic vessels are one of the main components of the immune system, helping to fight off invasions of harmful bacteria. Therefore, people need to take good care of their own lymphatic vessels by seeing a doctor when there are signs of abnormality.

Vinmec International General Hospital is a unit that has a 3.0 Tesla magnetic resonance imaging machine system with modern Silent technology that brings outstanding advantages and owns an examination room that meets the standards of the Ministry of Health. The MRI scanner will evaluate the entire venous system in a specific, multi-plane, 3D rendering. Anti-magnetic drugs in the examination of the lymphatic system are common anti-magnetic drugs that will not cause complications or affect the patient's health. The scan time is about 45-60 minutes and the patient will receive the MRI results after 15-30 minutes, depending on the abnormalities in the body of the scanner.
The introduction of a 3.0 Tesla magnetic resonance imaging machine with Silent technology will bring outstanding advantages such as:
Silent technology is especially beneficial for patients who are children, the elderly, and the sick. Healthy and weak patients and patients undergoing surgery Limit noise, create comfort and reduce stress for customers during the shooting process, help capture better quality images and shorten shooting time. Magnetic resonance imaging technology is the technology applied in the most popular and safest imaging method today because of its accuracy, non-invasiveness and no use of X-rays. Doctor. Pham Quoc Thanh has received intensive training and participated in many national and international scientific conferences on diagnostic imaging. The doctor has 13 years of experience in the field of diagnostic imaging and is currently a doctor at the Department of Diagnostic Imaging, Vinmec Hai Phong International General Hospital.