Research Information System
MEANDROS MEDICAL AND DENTAL JOURNAL, vol.23, no.4, pp.50-56, 2022 (ESCI)
Objective: To evaluate the role of transcerebellar diameter (TCD) as an independent parameter for estimation of gestational age (GA) in the second-trimester and its diagnostic performance compared with other fetal biometric parameters (FBP) such as biparietal diameter (BPD), femur length (FL), abdominal circumference (AC), and head circumference (HC). Materials and Methods: This retrospectively-designed cross-sectional study included recorded data of 120 healthy women between 19 and 24 weeks of gestation with normal singleton pregnancies who applied to our department for second-trimester anomaly scan between December 2020 and 2021. GA was calculated using nomograms on TCD and other FBP and compared with GA determined by last menstrual period (LMP). The relationship between GA based on LMP and FBP was evaluated. The correlation between parameters was evaluated with the Pearson correlation test. Results: The mean BPD, HC, AC, FL, TCD weeks and TCD values (mm) were 21.39 +/- 0.99, 21.36 +/- 0.98, 21.28 +/- 0.95, 21.24 +/- 1, 20.11 +/- 0.73, 21.21 +/- 1.09, respectively. The highest correlation for GA estimation was shown with FL (r=0.858), followed by AC (r=0.843), TCD values (mm) (r=0.834), and the TCD (week) (r=0.822), respectively. All "r" values indicated a strong correlation and ranged from 0.794 to 0.858. All parameters used in the detection of GA in the second-trimester were statistically significant (p<0.001). Conclusion: TCD provides successful results in the accurate estimation of GA in the second-trimester. Therefore, we recommend routine TCD measurements for anomaly screening