Cholesteatoma Imaging by diffusion and 3D T2 heavily weighed sequences: Role of fused images in localizing the white pearl. | ||||
| Egyptian Journal of Ear, Nose, Throat and Allied Sciences | ||||
| Articles in Press, Accepted Manuscript, Available Online from 07 November 2024 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejentas.2024.314646.1778 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Lamya Abdel galil Eissa  1; Hager Shinkar2; Hesham Kotb3; Ahmed Hesham Moustafa Galal 4
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| 1Alexandria faculty of medicine | ||||
| 2Alexndria Faculty of Medicine | ||||
| 3Alexandria Faculty of Medicine Radiology Department | ||||
| 4otorhinolaryngology department, faculty of medicine, Alexandria university, Egypt | ||||
| Abstract | ||||
| BACKGROUND The most popular and successful technique for diagnosing preoperative cholesteatomas is diffusion imaging. In spite of its limited capacity to distinguish anatomical features. In order to create thin-section cross-sectional imaging images, attempts were undertaken to merge diagnostic diffusion images with corresponding anatomical images. PATIENTS AND METHODS: We studied MR images of 30 patients having CSOM. Imaging techniques included thin-section “Non-EPI” diffusion and “MRI-fluid-sensitive- cisternography”. The “Fused images” were then generated by dedicated software. A cholesteatomatous “white pearl” is ascribed a certain location of oto-mastoid cavity. Fused and non-fused images are compared by inter-observer agreement. RESULTS: Cholesteatomas were most frequently seen in the "attic" section (60%) and the "mastoid cavity" (20%), then the "tympanic cavity; other than attic (10%), and finally the mastoid antrum (10%). When comparing fused images to non-fused images, all of the accuracy numbers were greater. CONCLUSIONS: “In order to effectively delineate the cholesteatomas pearl, fused images—which are produced by over-riding thin-section non-echo-planar diffusion and heavily T2W 3D ultra-thin sequences—can replace other thick-section anatomical images, which are unable to override thin-section diffusion images and may overlook minute pearls. | ||||
| Keywords | ||||
| MRI; cholesteatoma; diffusion; fused-images | ||||
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