Correlation of Radiologic Versus Endoscopic Visualization of the Middle Ear: Implications for Endoscopic Ear Surgery: Objectives:
To determine the limits of visualization during transcanal endoscopic ear surgery (EES) by correlating the relationship between radiologic and endoscopic anatomy using angled optics.
Methods:
Radiology and endoscopic visualization of tensor fold, protympanum, facial sinus (FS), sinus tympani (ST), subtympanic sinus (STS), hypotympanum, and aditus ad antrum were analyzed using a transcanal approach in 30 human temporal bones specimens with different angled endoscopes (0 degree, 45 degrees, 70 degrees) to check for the full visualization of these regions. High-resolution computed tomography (CT) was performed prior to dissection to classify retrotympanic anatomy. According to previously published descriptions, FS, ST, and STS were classified into types A, B, and C depending on their morphology relative to the mastoid segment of the facial nerve. These radiologic findings were compared to endoscopic visualization of these same structures using a Chi-squared test.
Results:
Visualization of the posterior wall of three different retrotympanic areas was significantly associated (FS p 70% with 45 degrees and 70 degrees).
Conclusion:
Complete visual access to the hidden recesses of the middle ear can be achieved using angled endoscopes (45 degrees and 70 degrees). We observed a statistically significant association of endoscopic visualization to radiologic description of the retrotympanum on CT and the optical angle used. The prediction of the endoscopic exposure of the retrotympanum from the preoperative CT is possible. Even with the use of 70 degrees lens, retrotympanum is not fully visualized on transcanal endoscopy if a type C retrotympanic recesses (posterior and medial to the facial nerve) is present. This represents a technical limit of exclusive transcanal EES.
Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com
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- Spiritual care experiences by cancer pati
- Focused ultrasound robotic system for v
- Macrophage HIF-1{alpha} Is an Independent Prognost...
- Radiation with STAT3 Blockade Triggers Dendritic C...
- Rhabdoid Tumors Are Sensitive to the Protein-Trans...
- Tumor Subtype Determines Therapeutic Response to C...
- Editor's Note: The Pivotal Role of Integrin {beta}...
- Clinical variability in spinal muscular atrophy ty...
- Clinical Balance Testing to Screen for Patients Wi...
- The effectiveness of radiotherapy in the treatment...
- Prophet forecasting model: a machine learning appr...
- TET1 may contribute to hypoxia-induced epithelial ...
- Correlation of Radiologic Versus Endoscopic Visual...
- Consequences of Mastoidectomy on Bone Conducted So...
- Laterality of Audiovestibular Symptoms Predicts La...
- Visualizing Affected Nerve Bundles of Cranial Nerv...
- Malformations Associated With Pediatric Congenital...
- Definitive treatment of sporadic vestibular schwan...
- Long-term survival after cemented versus uncemente...
- giant retroperitoneal neurilemmoma
- Resveratrol prevents TNF-α-induced VCAM-1 and ICAM...
- Vocal trauma especially in females and children is...
- Brazilian butt lift (BBL) surgery
- Adipose-derived stem cell enrichment is counter-pr...
- Cognitive, language and motor development of infan...
- Prolonged Survival of a Patient with Chronic Myelo...
- Correlation between the Epworth Sleepiness Scale a...
- Iron induces cell death and strengthens the effica...
- Flumatinib versus Imatinib for Newly Diagnosed Chr...
- Immediate inhibition of spinal secretory phospholi...
- Eriodictyol produces antidepressant-like effects a...
- Electroacupuncture at GV24 and bilateral GB13 impr...
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