Brain MRI

A dedicated magnetic resonance scan of the brain at the Radiodiagnostic Department of Vojenská nemocnice Olomouc. Brain MRI produces high-contrast images of the cerebral cortex, white matter, basal ganglia, cerebellum, brainstem, ventricles and vascular structures without any radiation exposure. It is the diagnostic standard for persistent headache, dizziness, memory decline, neurological symptoms and follow-up of previously identified findings. Self-pay patients at the Olomouc military hospital can book without a GP referral and receive a written report from an accredited specialist radiologist. Integration within a full acute-care hospital allows immediate specialist follow-up if the scan reveals a significant finding.

Brain MRI at Vojenská nemocnice Olomouc uses a strong superconducting magnet and multi-sequence radio-frequency protocols to generate millimetre-resolution images of the entire cranial anatomy without any ionising radiation. The examination is the gold standard for the investigation of neurological symptoms because it simultaneously captures cortical and subcortical grey matter, myelinated white-matter tracts, cerebrospinal fluid spaces, and the blood-vessel wall — structures that are invisible or poorly characterised on CT. The standard protocol for a brain MRI without contrast includes T1-weighted sagittal localiser (overall anatomy), T2-weighted axial and coronal sequences (grey-white matter differentiation, lesion detection), FLAIR (fluid-attenuated inversion recovery, suppressing CSF to reveal periventricular and subcortical white-matter lesions), and diffusion-weighted imaging (DWI, sensitive to acute ischaemia within minutes of onset). This battery covers the primary indications presenting to a hospital-based radiology department: ischaemic stroke, intracranial haemorrhage, demyelinating disease (multiple sclerosis), tumour or metastasis, hydrocephalus, and idiopathic intracranial hypertension. Intravenous gadolinium contrast is added when the referring physician or radiologist suspects blood-brain barrier disruption — the hallmark of active inflammation, neoplasm, abscess, or subacute infarction — or for assessment of meningeal enhancement, pituitary adenoma or acoustic neuroma. Contrast administration requires a brief assessment of renal function (eGFR) and an allergy screen; gadolinium is generally well tolerated, with severe reactions considerably rarer than for iodinated CT contrast. For the standard non-contrast study, no patient preparation is required. Patients may eat, drink normally and take all regular medications. The scan takes approximately 30–40 minutes of table time. The scanner generates rhythmic thumping and buzzing sounds at 70–90 dB during image acquisition; hearing protection (foam earplugs or noise-attenuating headphones) is provided as standard, and patients can communicate with the radiographer throughout via intercom. Absolute contraindications include ferromagnetic cardiac pacemakers and implantable defibrillators, ferromagnetic aneurysm clips within the cranium, and metallic foreign bodies in the orbit. Patients with any metallic cranial implants — cochlear implants, neurostimulators, VP shunts — should inform the department at the time of booking; many modern devices are MRI-conditional at specific field strengths and will require documentation of make and model before the appointment is confirmed. Claustrophobia can usually be managed with reassurance and the availability of the intercom; where significant anxiety is anticipated, patients may discuss mild anxiolytic premedication with their GP before attending. The written radiologist report is prepared by an accredited specialist radiologist and is typically available on the day of the examination or within 1–2 working days for complex studies. As the examination takes place within a full-service hospital, any clinically urgent finding can be referred directly to the relevant in-house specialist — neurology, neurosurgery, oncology — without delay.