Objective: To evaluate the value of temporal bone dual phase contrast enhancement computed tomography (DPCT) in diagnosing the causes of pulsatile tinnitus (PT).
Methods: We retrospectively analyzed the DPCT findings of 157 patients with unilateral PT. Temporal bone High-resolution CT (HRCT) was performed in 71 patients, magnetic resonance imaging (MRI) in 80 and digital subtraction angiography (DSA) in 89.
Results: In 71 patients with both DPCT and HRCT scan, a total of 68 causes were found. The accuracy of DPCT was 100% it was significant higher than that of HRCT (77.9%). In 80 patients with both DPCT and MRI, 83 causes were known. The accuracy of DPCT (94.0%) was significantly higher than that of MRI (8.4%). In 89 patients with both DPCT and DSA scan, 99 causes were identified. The accuracy of DPCT was 91.9% and it was significantly higher than that of DSA (15.2%).
Conclusion: DPCT may be an ideal imaging modality for diagnosing the causes of PT.
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