CT scan or MRI - which is better and what is the difference?

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2019-07-20 19:20:24

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A Huge number of illnesses and injuries may not be diagnosed only on the manifested symptoms. Very often the sick people seeking medical assistance, professionals administered a computer (CT) and magnetic resonance (Mr) imaging. What are the studies called? CT scan or MRI - which is better? In these matters it is necessary to understand.

Entity computed tomography

CT — a diagnostic method, proposed in 1972. Scientists have developed it due to the fact that conventional x-rays had shortcomings. She allowed the assistants during the examination of a specific patient to only one picture. At computed tomography the many advantages. First, thanks to this diagnostic method, you can get a number of shots. Secondly, the images no shadow overlay. Third, the CT sensitivity is higher compared to conventional radiography.

Computed tomography is based on the use of x-rays. When you use this diagnostic method uses a special MRI scanner. This is a complicated software and hardware, including:

  • The gantry (the moving part of the apparatus containing the scanning equipment);
  • High voltage generator;
  • The operator console;
  • Computer system.

CT scan or MRI which is better

Indications for computed tomography

CT is better than other techniques to visualize bone. Therefore, this diagnostic method is used when the detection patients have various injuries, fractures. For example, a person went to the doctor with a question: “What is better MRI or CT scan of the spine?” in the face of trauma specialist appoints CT. This study allows to examine the state of the vertebral processes, intervertebral disks.

Computed tomography is also assigned in the following cases:

  • If you suspect a stroke;
  • A person is in serious condition;
  • The presence of contraindications for Mr-imaging.

CT scan may be administered with the use of contrast agents. It is injected into the body of the examined patient, to improve the differentiation of internal organs from each other. The contrast material also allows to specify the nature of the detected pathological structures and to identify those changes that cannot be seen in conventional studies.

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CT scan or MRI which is better at identifying tumors

Contraindications for computed tomography

So, CT scan or MRI - which is better? CT, like any other diagnostic method, has contraindications. A study performed without contrast and with contrast, is not assigned:

  • Pregnant after x-ray radiation has a negative effect on the fetus;
  • Too full of people, because the specifications of the scanners indicates the maximum weight that the devices can withstand.

The computer imaging carried out with contrast agent administration, there are additional contraindications. This and allergies, and renal failure, and various diseases of the thyroid gland, and severe diabetes, and myeloma, and heavy condition of the patient under examination.

What is magnetic resonance imaging?

Another way to diagnose — MRI. This method of examination was established in 1973. CT scan or MRI - which is better? In answering this question, there are several advantages of magnetic resonance imaging before CT scan

  • Excellent resolution;
  • The possibility of making sections in different planes;
  • High contrast images.

The Main advantage of magnetic resonance imaging lies in the fact that the gamma-radiation effects on the human subject no. The reason is that MRI is based on the phenomenon of nuclear magnetic resonance not x-rays. For the MRI studies used a completely different scanners. Devices for MRI consist of magnets, gradient, semirough and radio frequency coils, cooling systems, systems of reception, transmission and processing of data, systems shielding.

what is better MRI or computed tomography of the spine

Indications for magnetic resonance imaging

MRI is assigned to people when indicated. These include:

  • Various inflammatory processes;
  • Congenital diseases, malformations;
  • Trauma
  • Vascular disorders;
  • Tumors.

CT scan or MRI which is better for the spine

Computer tomography or MRI - which is better in determining the tumors? This question is raised by many people. Magnetic resonance imaging of perfectly visualizes soft tissue. Bone structure do not affect the quality of the images. That's why doctors for suspected neoplasm, designate the MRI.

Contraindications to magnetic resonance imaging

When answering the question: ‘CT scan or MRI - which is better?” - it should be noted that magnetic resonance imaging can also be assigned not for all people. Absolutecontraindications of this method of diagnosis include:

  • The presence of non-removable electronic devices;
  • The presence in the body of metallic foreign bodies;
  • The presence of intracranial aneurysms, kopirovani ferromagnetic material;
  • Tattoos on a body with a content of metallic compounds.

Relative contraindications are:

  • Pregnancy in the early stages;
  • A fear of closed spaces;
  • Severe pain, not allowing it to keep still during the study;
  • Inappropriate behavior due to drugs or alcohol;
  • The need for monitoring indicators of vital functions.

Assignment CT and MRI: examples

Which method of diagnosis is the most informative? In answering this question, one cannot do without examples. You can consider the examination of the kidneys. CT scan or MRI? It is better for the kidneys? In complicated acute inflammatory processes a doctor appointed by ultrasound. This primary diagnostic method allows to estimate the size of the kidneys, structure of the parenchyma, the layers of fat as fiber. To assess and detail the prevalence of inflammatory changes in computed tomography is assigned.

CT scan or MRI what is best for kidneys

If during the ultrasound examination revealed a solid education or a complicated cyst, then CT scan is performed with contrast to clarify the diagnosis (contrast material significantly increases the information content). Despite the controversial results shown magnetic resonance imaging.

The Following example — a survey of man for suspected ischemic stroke. CT scan or MRI? It is better for the brain, assess its condition named disease? Computed tomography performed in the first day. It allows you to exclude hemorrhage. But with MRI it can be done. Magnetic resonance imaging is a highly informative only in the subacute (3-14 days) and chronic (more than 14 days) stages.

CT scan or MRI which is better for the brain

Thus, it is impossible to say which of the methods of diagnosis is most informative. CT scan or MRI - which is better for the spine, kidneys, brain and other internal organs? The answer to this question finds the doctor for each case. And computed tomography, and magnetic resonance imaging — those are the two informative method. The choice between them is always made by an expert, given the clinical picture, the condition of the sick person, the presence of disease.


Article in other languages:

AR: https://www.tostpost.com/ar/health/18498-ct-scan-or-mri---which-is-better-and-what-is-the-difference.html

BE: https://www.tostpost.com/be/zdaro-e/35390-kamputarnaya-tamagraf-ya-abo-mrt---shto-lepsh-chym-rozn-ca.html

DE: https://www.tostpost.com/de/gesundheit/35036-computertomographie-oder-mrt---was-ist-besser-und-was-ist-der-untersch.html

ES: https://www.tostpost.com/es/la-salud/34898-una-tomograf-a-computarizada-o-una-resonancia-magn-tica---que-es-mejor.html

HI: https://www.tostpost.com/hi/health/20165-ct-scan-or-mri---which-is-better-and-what-is-the-difference.html

JA: https://www.tostpost.com/ja/health/18164-ct-mri.html

KK: https://www.tostpost.com/kk/densauly/35677-komp-yuterl-k-tomografiya-nemese-mrt---b-l-zha-sy-zh-ne-ayyrmashyly-y-.html

PL: https://www.tostpost.com/pl/zdrowie/36811-tomografia-komputerowa-lub-mri---co-jest-lepsze-a-co-to-za-r-nica.html

PT: https://www.tostpost.com/pt/sa-de/36604-tomografia-computadorizada-ou-resson-ncia-magn-tica---o-que-melhor-e-q.html

TR: https://www.tostpost.com/tr/sa-l-k/32114-bilgisayarl-tomografi-veya-mr---hangisi-daha-iyi-ve-aralar-ndaki-fark-.html

UK: https://www.tostpost.com/uk/zdorov-ya/35934-komp-yuterna-tomograf-ya-abo-mrt---scho-krasche-v-chomu-r-znicya.html

ZH: https://www.tostpost.com/zh/health/6680-ct.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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