Assessment of the preoperative computed tomographic predictability for round window membrane visibility and accessibility during cochlear implant surgery

• DOI: 10.4103/ejo.ejo_4_19
• Publication Date: 2019-08-21T11:31:05Z
• Authors: Ahmed Galal; Omneya G. Eldin; Fatthi Baki; Mario Sanna
• Keywords: Round window; Visibility; Cadaveric spasm; Cut-off

The aim of the present study was to assess preoperative predictability multi-slice computed tomography for round window membrane (RWM) visibility and accessibility through niche (RWN) intraoperatively. Patients methods Computed tomographic scans 61 adult cochlear implant patients with otherwise normal temporal bone anatomy were studied RWN extent using two methods. first a modification method by Park colleagues another simple proposed our group. assessed intraoperatively after performing posterior tympanotomy good exposure RWN. Statistical analysis then performed. Modified statistically significant in predicting RWM (P=0.018) cutoff point detected at more than or equal 0.7 specificity 69.23% low no RWM. Our also (P=0.001) 1.43mm 96.15%. depth has been repeatedly literature only rarely correlation intraoperative findings. These frequently either cadaveric radiological complex reconstruction, thus doubtful clinical value. In study, used found be predict degree modified Park’s can significantly However, had higher smaller P