Information on the use of MRI in food

Eat less sugary foods, you can eat celery, millet, and eat more whole grains and high-fiber foods. Do not smoke or drink, ensure sleep, and develop good habits.

1. Because nuclear magnetic resonance is magnetic field imaging and has no radioactivity, it is harmless to the human body and very safe. It is understood that there are no reports of harm caused by the use of MRI in the world, and no increase in the incidence of genetic mutations or chromosomal aberrations caused by MRI has been found.

2. MRI is the most effective imaging diagnosis method for cranial and spinal cord diseases, which can not only detect tumors, cerebral infarction, cerebral hemorrhage, brain abscess, neurocysticercosis and congenital cerebrovascular malformations early, but also determine the types and causes of hydrocephalus.

Disadvantages of NMR:

1. Like CT, MRI is also an anatomical imaging diagnosis, and many lesions are still difficult to diagnose by MRI alone, unlike endoscopes, which can obtain both imaging and pathological diagnosis at the same time.

2. The examination of the lungs is not superior to X-ray or CT examination, and the examination of the liver, pancreas, adrenal glands and prostate is not superior to that of B ultrasound, but the cost is much higher.

Disadvantages: Relatively low sensitivity compared to UV-Vis and IR spectroscopy.

Advantages: Provides a greater amount of information at the atomic level than any other analytical method.

1 Advantages Multi-parameter imaging, multi-level scanning imaging, multi-directional imaging, can show blood vessels without contrast agent; It has obvious advantages in the localization, qualitative and quantitative diagnosis of many lesions. In addition, CT makes up for the shortcomings of CT in the diagnosis of thoracic lesions, such as distinguishing between vascular and nonvascular lesions, which can show pulmonary vascular malformations and dissecting aneurysms; The display of trachea, bronchus, large vessels, hilar lymph nodes and mediastinal lymph nodes in each group is better than the disadvantages It is not sensitive to the observation of calcifications, and there are metal foreign bodies in the body and cannot be MRI.

It is a diagnostic instrument that examines human diseases and is capable of performing stereoscopic scanning, including human cross-sectional, sagittal and coronal planes. Using the principle of electromagnetic waves, people can be re-scanned in a magnetic field in multiple directions. Diagnosis of tissue diseases in every part of the human body including bones, soft tissues, skull, heart, lungs, abdominal internal organs, etc.

By adjusting the magnetic field, the desired profile can be freely selected. Images of areas that are inaccessible or difficult to access with other imaging techniques. For intervertebral discs and spinal cords, sagittal plane, coronal plane, and cross-sectional imaging can be done, and nerve roots, spinal cord, and ganglia can be seen.

Three-dimensional images of the brain and spinal cord can be obtained, unlike CT (which can only obtain a cross-sectional view perpendicular to the long axis of the human body) and scan layer by layer and may miss the lesion.

It can diagnose cardiac lesions, but CT is difficult to handle nervous system lesions due to its slow scanning speed, including tumors, infarctions, hemorrhage, degeneration, congenital malformations, infections, etc., which have almost become a means of diagnosis. In particular, spinal cord and vertebral lesions, such as tumors, atrophy, degeneration, and traumatic disc lesions of the spine, have become the preferred examination methods.

Lesions of the large blood vessels of the heart; Lesions of the mediastinal diaphragm in the lungs.

examination of the abdomen and pelvic organs; The biliary system and urinary system are significantly better than CT.

soft tissue lesions on joints; It is very sensitive to aseptic necrosis of bone marrow and bone, and lesions are detected earlier than X-ray and CT

Nuclear magnetic resonance (NMR) is a physical phenomenon in which the nucleus of an atom in a static magnetic field is subjected to another alternating magnetic field. The term "nuclear magnetic resonance" refers to the technology that uses nuclear magnetic resonance phenomena to obtain information about the molecular structure and the internal structure of the human body.

NMR Encyclopedia.

1. Systemic soft tissue lesions: Tumors, infections, and degenerative lesions of nerves, blood vessels, lymphatic vessels, muscles, and connective tissues can be accurately located and qualitatively diagnosed.

2. Bone and joint: the diagnosis and scope of lesions of intraosseous infection, tumor and trauma, especially for some subtle changes such as bone contusion, intra-articular cartilage, ligament, meniscus, synovium, synovial sac and other lesions and bone marrow lesions have high diagnostic value.

3. Thoracic lesions: mediastinal masses, lymph nodes, pleural lesions, etc., which can show the relationship between the mass in the lung and the larger trachea and blood vessels.

4. Pelvic organs; Uterine fibroids, other uterine tumors, ovarian tumors, qualitative localization of pelvic masses, rectal, prostate and bladder masses, etc.

5. Abdominal organs: diagnosis and differential diagnosis of liver cancer, liver hemangioma and liver cyst, diagnosis and differential diagnosis of intra-abdominal mass, especially retroperitoneal lesions.

6. Nervous system lesions: cerebral infarction, brain tumor, inflammation, degenerative diseases, congenital malformations, trauma, etc., for the earliest application of human body systems, we have accumulated rich experience, and the positioning and qualitative diagnosis of lesions are more accurate and timely, and early lesions can be found.

7. Cardiovascular system: It can be used for the diagnosis of heart disease, cardiomyopathy, pericardial tumor, pericardial effusion, wall thrombosis, and stripping of intimal sheets.

Hello, MRI is an examination method that uses an electronic computer to analyze and diagnose the image of the human body, which does not use X-rays, but magnetic fields. The basic principle is that the hydrogen atoms contained in the human body will resonate after being given a specific high wave under a strong magnetic field, producing a high wave number of electromagnetic waves. Taking advantage of this property, MRI can show fat, organs, muscles, fast-flowing blood, bones, and air by using an electronic computer to collect, process, and graphize changes in the magnetic field.

The internal structure of the organ can also be clearly displayed. Doctors can well identify tumors, inflammation, necrotic lesions, abnormal material deposition, functional obstruction, blood circulation obstruction and other lesions in the patient's body. It is of great help in the diagnosis of various diseases of the nervous system, chest, abdomen and limbs.

Cervical spine MRI is generally done first, and will not be directly enhanced (to create a contrast) examination, if the non-contrast scan finds that there are lesions that need to be enhanced, the patient's consent must be asked to do it, and some hospitals also have to sign the consent form for the enhanced examination, because enhancement may cause allergic reactions, but this possibility is rare, very rare, almost one in a million; If there is no non-contrast direct enhancement, you have the right to refuse

1.MRI head can check for vascular diseases, such as cerebral ischemia, cerebral infarction, cerebral hemorrhage, vascular malformation, etc.;

2.Tumor lesions such as benign cysts, pituitary tumors, and meningiomas may be examined; malignant, glioma, brain metastases, etc.;

3.Head trauma, such as cerebral contusion and laceration, can be examined;

4.Sinus masses and sinus inflammation may be examined.

It is widely used in the diagnosis of clinical diseases, and has become an indispensable examination method for some lesions, which can be used to examine all parts of the body, such as the brain, spine, chest, abdomen, pelvis, and joints of all sizes of the body.

MRI, like CT, is also a means of perspective, but CT is a layer-by-layer plane view, while MRI is three-dimensional imaging. And NMR is safer without radiation. Guidance:

**It is related to the level of the hospital, generally the cost of an MRI in a tertiary hospital is about 700-900, some larger hospitals may be more expensive, and secondary hospitals are cheaper if they have this machine.

1. Central nervous system, including intracerebral vascular lesions, cranial tumors, various spinal cord lesions, intracranial infections, brain degeneration, congenital malformations of the brain, and craniocerebral trauma;

Second, the ENT department includes, intraorbital inflammation, intraorbital tumors, intraorbital vascular lesions, tongue tumors, parotid gland lesions, and various tumors of the ear;

3. The chest includes cardiac and macrovascular malformations and tumors, mediastinal tumors and mediastinal hernias, congenital malformations of the lungs, pulmonary vascular lesions and tumors;

Fourth, breast inflammation and proliferation and tumors;

5. The lungs include liver cancer, hemangiomas, biliary stones, spleen, kidney, pancreatic contusions, inflammation and tumors, prostatic hyperplasia, congenital malformations and tumors of the ovaries and uterus.

The cost of an MRI is about $400,600. Of course, this price is the basic price, because the examination of the same part is divided into a variety of different sequences, for example, the head MRI examination is divided into non-contrast scanning, enhancement, and cerebrovascular reconstruction, and the cost of the examination is also increased item by item. In addition, the level of the medical unit and the quality of the inspection equipment are also one of the factors that cause the fluctuation of the examination cost.

MRI is being recognized and accepted by the majority of patients because it does not have radiation damage.

Magnetic resonance (MR) is a method of medical examination and a revolution in medical imaging, in which biological tissues can be penetrated by short-wave components of the electromagnetic spectrum such as X-rays, but can block medium-wave components such as ultraviolet, infrared and long-wave rays.

Human tissues allow the long-wave components of magnetic resonance such as radio waves to pass through, which is one of the basic conditions for the application of magnetic resonance in clinical practice.

Magnetic resonance: also known as magnetic resonance imaging.

Dizziness and slowness in walking are what diagnoses strength.

Is it possible to find out how many fluorescent agents are in the body for five years?

MRI is almost suitable for the examination of different diseases of various systems of the body, such as tumors, inflammation, trauma, degenerative diseases and various congenital diseases, and has a wide range of indications in spine surgery, and the application range greatly exceeds that of CT examination, and the diagnostic value is significantly better than that of CT. The cost of examination is expensive, much higher than the cost of CT examination, the cost of MRI examination of a part is 800-1300 yuan, while CT is only 180-600 yuan.

MRI is suitable for almost all different diseases of the whole body

1. Cranial brain and spinal cord:

MRI is the first choice for central nervous system imaging due to its strong soft tissue contrast advantage. MRI is more sensitive than CT for the diagnosis of brain tumors, encephalitis, white matter lesions, cerebral infarctions, and congenital anomalies of the brain. Lesions at the base of the skull and brainstem can be visualized more clearly because there are no artifacts.

MRI can show cerebral blood vessels without contrast and detect aneurysms and arterial malformations, and MRI can also directly show some cranial nerves, which can detect early lesions that occur on these nerves. MRI can directly show the whole picture of the spinal cord, so it has important diagnostic value for spinal cord tumors or neuraxial tumors, spinal cord white matter lesions, syringomyelia, spinal cord injury, etc. MRI may show degeneration, protrusion, or bulging of the disc lesions.

Shows spinal stenosis is also good. The cervical, thoracic spine, and CT findings are often unsatisfactory, while the MRI findings are clear. MRI is also sensitive for showing metastatic tumors in the vertebral bodies.

2. Head and neck:

MRI shows good tumor lesions of the eyes, ears, nose and throat, such as the invasion of nasopharyngeal carcinoma to the skull base and cranial nerves, MRI shows more clearly and accurately than CT. MRI can also be done to angiogram the neck, which shows vascular abnormalities. For a lump in the neck, MRI also shows its extent and its characteristics to help characterize it.

3. Chest: MRI can directly display the myocardium and the left and right ventricular cavities (with electrocardiogram gating), which can understand the damage of myocardium and measure cardiac function. The condition of the large vessels in the mediastinum can be clearly visualized. It is also very helpful for the localization and characterization of mediastinal tumors, and can also show pulmonary edema, pulmonary embolism, and lung tumors.

It can distinguish the nature of the pleural effusion from the vascular section and the lymph nodes.

4. Abdomen: MRI can provide very valuable information for the diagnosis of diseases of the liver, kidney, pancreas, spleen, adrenal glands and other solid organs, which is helpful for diagnosis. Small lesions are also easier to visualize, allowing early lesions to be detected. MRI cholangiopancreatography (MRCP) can show the biliary tract and pancreatic duct, and can be used as an alternative to urography (MRU) to show dilated ureters, renal pelvis, and calyces, especially for patients with poor renal function and non-developing IVU.

5. Pelvic cavity: MRI can show lesions of uterus, ovaries, bladder, prostate, seminal vesicles and other organs, and can directly see the endometrium and myometrium, which is of great help for early diagnosis of uterine neoplastic lesions. It is also of great value for the qualitative diagnosis of lesions in the ovaries, bladder, prostate, etc.

6. Posterior peritoneum:

MRI is of great value in visualizing tumors in the posterior peritoneum and its relationship to surrounding organs. It can also show abdominal aorta or other macrovascular lesions, such as abdominal aortic aneurysm, Bucha-syndrome, renal artery stenosis, etc.

7. Musculoskeletal system:

MRI has a higher display rate of damage to cartilage discs, tendons, and ligaments in the joint than CT. Because it is sensitive to changes in the bone marrow, it can detect bone metastasis, osteomyelitis, aseptic necrosis, leukemia bone marrow infiltration and so on early. It shows the soft tissue blocks of bone tumors clearly, and also has a certain diagnostic value for soft tissue injuries.

It is used to examine tumors of the uterus, ovaries, bladder and prostate, and can stage cancers, and can also clearly show tumors of the liver and pancreas. Whether it is suitable for magnetic resonance examination, you can consult the doctor of Kang Zhangjiao Physical Examination Network.