[Cerebral SPET in vertigo syndrome]

Area of Science:

• Neurology
• Radiology
• Medical Imaging

Background:

• Diagnosing vertigo, particularly when no permanent tissue damage is evident, remains a clinical challenge.
• Functional deficits in vertigo are often linked to reduced cerebral blood perfusion.
• Existing diagnostic methods like CT, NMR, and Doppler have limitations in certain vertigo cases.

Purpose of the Study:

• To evaluate the diagnostic utility of cerebral Single-Photon Emission Computed Tomography (SPET) in patients with vertigo.
• To compare the effectiveness of cerebral SPET against CT, NMR, and Doppler investigations for vertigo diagnosis.
• To determine if cerebral SPET can identify perfusion deficits associated with vertigo, even without permanent tissue damage.

Main Methods:

• Cerebral SPET was performed on 23 patients with central vertigo, 10 with peripheral vertigo, and 17 healthy controls.
• Results from cerebral SPET were compared with findings from Computed Tomography (CT), Nuclear Magnetic Resonance (NMR), and Doppler investigations.
• The study focused on assessing specificity and sensitivity of SPET in differentiating vertigo types and identifying perfusion deficits.

Main Results:

• Cerebral SPET demonstrated higher specificity and sensitivity compared to CT, NMR, and Doppler for investigating peripheral vertigo.
• The technique effectively identified reduced cerebral blood perfusion in patients with vertigo, correlating with functional deficits.
• SPET proved particularly useful in diagnosing vertigo of vascular origin.

Conclusions:

• Cerebral SPET is a valuable tool for diagnosing vertigo, especially when vascular causes are suspected.
• The findings support the use of SPET in identifying perfusion deficits in various pathologies beyond vertigo.
• Cerebral SPET offers a sensitive and specific method for evaluating functional deficits linked to blood perfusion reduction.