Brain scintigraphy


1. When appointed?

2. How to prepare?

3. Contraindications

brain scintigraphy (GM) is a radioisotope diagnostic method that helps to detect blood disorders GM structures at the level of microcirculation, and also allows you to assess blood flow in different parts of the brain in epilepsy, stroke,head injuries, mental disorders and transient ischemic attacks.This study is based on the introduction into the patient radioactive drugs that gamma rays which detects scintillation counter.

scintigraphy GM - it is non-invasive and simple examination, which practically has no contraindications and cause complications.Radiation exposure scintigraphy corresponds to an annual dose of radiation exposure originating from natural sources.This procedure is now considered one of the most informative and sensitive methods for diagnosis of brain tumors and other pathologies (eg, encephalitis, meningitis, brain abscess).

radiopharmaceuticals used in brain scintigraphy, 99mTc-pertechnetate acts

.The substance is injected intravenously.Radioisotope from the blood first enters the modified GM vascular endothelium, and then - in the interstitial space with a further portion of the pathological accumulation of intracellular in the lesion.

brain scintigraphy is performed in static and dynamic modes.GM blood flow study in the dynamic mode is carried out with removal scintigrams for 40-60 seconds.

brain pathologies that provoke breach the blood-brain barrier, detected according scintigrams tomographic or planar static scintigrams four projections as a place of high content of the radioisotope.Scanning takes typically 15-45 minutes, and after 3 hours after intravenous Radiopreparat.

brain scintigraphy is performed in the following sequence:

  1. Medical history (questions about the beginning and course of the disease).
  2. patient briefing on the progress of
  3. procedures for providing information on possible complications.
  4. Signature patient documents, which are agreed to conduct a survey.
  5. Phase rest 30-45 minutes.
  6. Intravenous injection of radioisotope.
  7. Phase rest 15-45 minutes.
  8. Holding scanning.
  9. Discussion scintigraphy results.
  10. written medical certificate.

When appointed?

main indications for brain scintigraphy are:

  • Stroke (to detect cerebrovascular accidents).
  • Determining the severity of narrowing (stenosis) of the brain vessels.
  • diagnosis of all types of dementia.
  • Definition of cerebrovascular dysfunction in epilepsy.
  • diagnosis of meningitis, abscesses, brain encephalitis.
  • Alzheimer's disease (dementia, senile dementia, memory impairment).
  • brain tumors.
  • cerebral infarction.
  • Head Injury.
  • mental illness.

How to prepare?

brain scintigraphy does not require special preparation of the patient.

Contraindications Contraindications to the procedure are considered:

  • Idiosyncrasy radiopharmaceutical used scintigraphy GM.
  • Pregnancy and lactation (breastfeeding).
  • X-ray examination, which was conducted shortly before the scintigraphy.

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