Magnetic resonance imaging and computerized tomography in malignant external otitis

Area of Science:

• Radiology
• Nuclear Medicine
• Otolaryngology

Background:

• Malignant external otitis (MEO) diagnosis and treatment monitoring present challenges.
• Accurate assessment of disease extent and therapeutic response is crucial for effective MEO management.

Observation:

• This study evaluated four MEO patients using MRI, CT, Tc-99 bone scans, and Ga-67 citrate scans.
• MRI demonstrated superiority in delineating soft tissue involvement compared to CT and radionuclide imaging.

Findings:

• MRI is highly effective for assessing the anatomic extent of soft tissue changes in MEO.
• MRI alone is insufficient for evaluating the physiological response to MEO therapy.
• MRI significantly enhances the interpretation of Tc-99 bone and Ga-67 citrate scans in MEO.

Implications:

• MRI is a valuable tool for staging MEO, guiding treatment decisions.
• Combining MRI with radionuclide imaging offers a comprehensive approach to MEO management.
• Further research is warranted to fully integrate MRI into MEO treatment protocols.