Otol Neurotol. 2025 Feb 1;46(2):176-182. doi: 10.1097/MAO.0000000000004395. Epub 2024 Dec 18.
ABSTRACT
OBJECTIVE: To compare the diagnostic capability of Pöschl reformations created from temporal bone CT (TBCT) and high-resolution noncontrast CT head exams (HR-NECTH) to detect and classify superior semicircular canal (SSC) abnormalities.
STUDY DESIGN: Retrospective case review.
SETTING: Tertiary referral center.
PATIENTS: Individuals with normal and abnormal SSC who received TBCT and HR-NECTH.
INTERVENTIONS: Pöschl reformations of each patient’s temporal bones (TB) were created using TBCT and HR-NECTH. Screenshots displaying the SSC were randomized into an interpretation test sent to neuroradiologists who interpreted the SSC as normal/abnormal and classified abnormalities as thinning (SST)/dehiscence (SSD).
MAIN OUTCOME MEASURE: Analysis of responses to interpretation test, interrater reliability, and sensitivity, specificity, and positive/negative predictive values of Pöschl reformations from TBCT and HR-NECTH.
RESULTS: Fourteen patients were enrolled, 28 TB were reviewed. Sixteen TB demonstrated SST/SDD and 12 were normal as per gold standard TBCT. Interpretation test displaying screenshots of the SSC, in a randomized, blinded fashion, was completed by four neuroradiologists. Analysis of TBCT and HR-NECTH Pöschl reformation interpretations yielded no statistically significant difference in proportion of true/false-positive/negative responses (χ2 = 3.37, p = 0.83), similar and substantial interrater reliability (k = 0.78 vs. 0.73, respectively), and similar sensitivity, specificity, and positive/negative predictive values (0.86, 1, 1, 0.84 vs. 0.78, 0.96, 0.96, 0.77, respectively). Neuroradiologists also correctly classified SST/SSD on TBCT and HR-NECTH Pöschl reformations at a rate of 70.9% vs. 78.0%, respectively.
CONCLUSION: Pöschl reformations created from HR-NECTH demonstrated similar diagnostic capability as those created from TBCT to detect and classify SSC abnormalities.
PMID:39792981 | DOI:10.1097/MAO.0000000000004395
