Interobserver and intraobserver reliability of skull base angles measured on magnetic resonance images  

作　　者：Volkan Kizilgoz Sonay Aydin Huseyin Aydemir Papatya Keles Mecit Kantarci 

机构地区：[1]Department of Radiology,Erzincan Binali Yıldırım University,Faculty of Medicine,Erzincan 24000,Türkiye [2]Department of Anatomy,University of Health Sciences,Hamidiye Faculty of Medicine,İstanbul 34674,Türkiye

出　　处：《World Journal of Clinical Cases》2024年第34期6687-6695,共9页世界临床病例杂志（英文）

摘　　要：BACKGROUND Determination of platybasia and basilar kyphosis are significant parts of routine cranial magnetic resonance(MR)interpretations.These situations may explain a patient’s symptoms or may be associated with other anomalies.AIM To indicate the interobserver and intraobserver reliability of the skull base angles(SBA)(Koenigsberg standard)and modified SBA(mSBA)measurement techniques.METHODS In total,391 patients who had undergone cranial MR imaging were re-assessed regarding the SBA measurements.The SBA and mSBA techniques were used on MR images.Two reviewers independently measured the same angles twice within a 15-day interval,using different monitors.Intraclass correlation coefficient(ICC)was calculated to reveal the intraobserver and interobserver agreements.RESULTS There was an excellent agreement between reviewers regarding both angle measurements(ICC was 0.998 for SBA and mSBA).Excellent agreement levels were also observed for intraobserver measurements.ICC was 0.998 for SBA and 0.999 for mSBA for reviewer 1.ICC was 0.997 for SBA and 0.999 for mSBA according to the measurement results of reviewer 2.Higher SBA and mSBA values were observed for females compared to males.There was no correlation between SBA and age for SBA.However,a negative and low-level correlation was observed between mSBA values and age for both reviewers.CONCLUSION SBA and mSBA measurements indicated excellent agreement regarding interobserver and intraobserver differences.The study results showed that SBA angles were reliable measurement techniques to be used on MR images.

关 键 词：Magnetic resonance imaging RADIOGRAPHY Skull base angles Platybasia Observer reliability 

分 类 号：R445.2[医药卫生—影像医学与核医学]