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The article was written by Dr. Pham Manh Chung, Head of Diagnostic Imaging Department - Department of Diagnostic Imaging - Vinmec Ha Long International HospitalContrast agents in diagnostic imaging are substances used to enhance the contrast level of body structures or fluids during imaging examinations. The benefits of contrast agents help accurately diagnose the disease to be examined.
1. Contrast agent in diagnostic imaging
Contrast drugs such as Xenetix, Ultravist, Omipaque, Visipaque: used in computed tomography, urography - excretory system (UIV), retrograde cholangiopancreatography, DSA angiography, gastrointestinal circulation.
Magnetic contrast agents such as Dotarem, Magnevist, Omiscan used in magnetic resonance imaging.
Barium Sulfate Contrast: used to take X-ray of the esophagus - stomach, or X-ray of the colon.
Contrast agents used in ultrasound are also being applied in clinical practice such as: surveying liver tumors by ultrasound with injection of contrast agent Levovist, Sonovue. Ultrasound evaluation of fallopian tubes by contrast injection...
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2. Effect of contrast agent in diagnostic imaging
Contrast helps the doctor distinguish between normal and abnormal conditions of the body. Contrast agent will help to clearly show the organs in imaging examination such as X-ray, computed tomography, magnetic resonance, ultrasound to evaluate the enhancement properties, contrast drug removal of the organs, thereby accurately diagnosing the organs. normal or abnormal.
Most of the lesions of any organ in the body on imaging examination require contrast medicine to help accurately diagnose the lesion such as tumor, inflammation, abscess, aneurysm, vascular malformation ...
Contrast agent helps in differential diagnosis of lesions such as cancerous or benign tumors, tumorous or inflammatory lesions, inflammation with abscesses or not, vascular malformations... help doctors give the right and effective treatment for customers.
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3. What diseases need to use contrast agent in diagnostic imaging
Most cases of computed tomography, magnetic resonance imaging to accurately diagnose the disease require contrast injection, specifically:
Computed tomography, magnetic resonance imaging of the abdomen - subframe requires contrast injection. The test is used to diagnose pathologies in viscera such as hepatobiliary system, pancreas, spleen, urinary system, uterus and ovaries, and diseases of the digestive system. Suspected cases of tumor. Most cases of inflammation and abscess require contrast injection, except pneumonia, which has been diagnosed with certainty and does not need to be differentiated from other diseases. Vascular pathology such as aneurysm, pseudoaneurysm, vascular malformation, arterial dissection, arterial occlusive stenosis... Some special cases: sourcing of isolated pulmonary vasculature, assessment of reperfusion area of the lesion, diagnose the degree of septalization of the subacute subdural hematoma,... For diseases of the gastrointestinal tract such as oesophagus - stomach: must drink contrast agent to clearly visualize the structure. of the esophagus and stomach. Or colorectal pathology requires enema of the colon with contrast medium to assess colonic damage. However, today, with the development of flexible endoscopes along with endoscopic biopsy tools, esophageal and colon diseases are indicated more widely than X-ray methods with contrast. optical .
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4. Why should imaging examination using contrast agent at Vinmec international general hospital?
Before appointment to visit diagnostic imaging services, you will be evaluated by leading medical experts about your medical history, personal and family history and safety check (checklist with contrast medicine) ) to ensure the safety of customers before entering the shooting room. A team of good, professional and dedicated doctors and technicians at Vinmec system will make you confident in their expertise, peace of mind and comfort before, during and after the shoot. Modern imaging system such as multi-detector multi-segment computed tomography machine (640-array CLVT machine), 3.0 Tesla high-force magnetic resonance machine, digital X-ray machine system for accurate detection of are small lesions, newly formed lesions. To schedule an imaging examination using contrast medicine at Vinmec medical system with the most modern machine system today, you can immediately contact the nearest Vinmec International General Hospital facility system. .
Customers can directly go to Vinmec Health system nationwide to visit or contact the hotline here for support.
