Ces radiol. 2015, 69(3):213-219 | DOI: 10.55095/CesRadiol2015/033

MR diagnosis of middle ear cholesteatoma using non-echo-planar diffusion-weighted imaging (non-EPI DWI)Original article

Lenka Bakaj Zbrožková1, Tomáš Bakaj2, Eva Čecháková1, Miroslav Heřman1, Ivo Stárek2
1 Radiologická klinika LF UP a FN, Olomouc
2 Otorinolaryngologická klinika LF UP a FN, Olomouc

Aim: To evaluate the possibility of diagnosis of middle ear cholesteatoma on MRI using non-echo-planar diffusion-weighted imaging (non-EPI DWI).

Method: The prospective study included all patients indicated to primary or second-look surgery of middle ear cholesteatoma between 10/2012 and 1/2015. All these patients underwent MRI using non-EPI DWI technique before the surgery. There were 25 patients, two patients had bilateral disease. 10 patients were before primary surgery, 15 patients before second-look surgery. The MRI was performed from 0 to 106 days (median 2 days) before surgery. The results of the MR investigation were compared with those obtained by surgery and confirmed by definitive histopatological evaluations.

Results: The sensitivity of 93,75 %, specificity of 93,75 %, positive predictive value 93,75 %, negative predictive value 93,75 % was reached in detection of the middle ear cholesteatoma using MR with non-EPI DWI. The smallest correctly diagnosed cholesteatoma had the diameter of 4 mm, the largest 20 mm, mean 11 mm.

Conclusion: MR investigation using non-EPI DWI sequence is reliable method for the middle ear cholesteatoma diagnosis. It is possible to use this technique in patients before primary surgery as well as in patients before second-look or revision surgery.

Keywords: cholesteatoma, middle ear, MR, non-EPI DWI

Accepted: September 9, 2015; Published: September 1, 2015  Show citation

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Bakaj Zbrožková L, Bakaj T, Čecháková E, Heřman M, Stárek I. MR diagnosis of middle ear cholesteatoma using non-echo-planar diffusion-weighted imaging (non-EPI DWI). Ces radiol. 2015;69(3):213-219. doi: 10.55095/CesRadiol2015/033.
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