Nomogram of the width, length, and area of the fetal optic chiasm according to gestational week.

IF 0.7 4区医学 Q4 OBSTETRICS & GYNECOLOGY Zeitschrift fur Geburtshilfe und Neonatologie Pub Date : 2025-03-19 DOI:10.1055/a-2550-6724

Aytakin Mahammadaliyeva, Ayşegül Özel, İbrahim Kale

{"title":"Nomogram of the width, length, and area of the fetal optic chiasm according to gestational week.","authors":"Aytakin Mahammadaliyeva, Ayşegül Özel, İbrahim Kale","doi":"10.1055/a-2550-6724","DOIUrl":null,"url":null,"abstract":"<p><p>Using transabdominal 2D ultrasonography, we aimed to establish nomograms for fetal optic chiasm (OC) width, length, and area between 16-37 weeks of gestation.OC measurements were performed by a resident and a perinatologist. An agreement was evaluated using intraclass correlation coefficients (ICCs) with 95% confidence intervals. Then, nomogram tables of OC width, length, and area measurements were derived using these measurements. A strong positive correlation was found between OC measurements and gestational week (GW) (r=0.873 for width, r=0.827 for length, r=0.863 for area; p<0.001). The regression equations obtained were: OC width=1.164+0.206×GW, OC length=0.072+0.180×GW, OC area =-25.226+2.228×GW. Interobserver agreement was high, with ICC values of 0.798 for width, 0.705 for length, and 0.758 for area, indicating consistent measurements between observers.This is the first study to establish normative data and nomograms for OC dimensions. Our findings confirm that OC width, length, and area increase linearly with advancing gestation. The high interobserver reliability suggests that these measurements can be reliably used in clinical practice and future research.</p>","PeriodicalId":23854,"journal":{"name":"Zeitschrift fur Geburtshilfe und Neonatologie","volume":" ","pages":""},"PeriodicalIF":0.7000,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zeitschrift fur Geburtshilfe und Neonatologie","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1055/a-2550-6724","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"OBSTETRICS & GYNECOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Using transabdominal 2D ultrasonography, we aimed to establish nomograms for fetal optic chiasm (OC) width, length, and area between 16-37 weeks of gestation.OC measurements were performed by a resident and a perinatologist. An agreement was evaluated using intraclass correlation coefficients (ICCs) with 95% confidence intervals. Then, nomogram tables of OC width, length, and area measurements were derived using these measurements. A strong positive correlation was found between OC measurements and gestational week (GW) (r=0.873 for width, r=0.827 for length, r=0.863 for area; p<0.001). The regression equations obtained were: OC width=1.164+0.206×GW, OC length=0.072+0.180×GW, OC area =-25.226+2.228×GW. Interobserver agreement was high, with ICC values of 0.798 for width, 0.705 for length, and 0.758 for area, indicating consistent measurements between observers.This is the first study to establish normative data and nomograms for OC dimensions. Our findings confirm that OC width, length, and area increase linearly with advancing gestation. The high interobserver reliability suggests that these measurements can be reliably used in clinical practice and future research.

查看原文