Annals of African Medicine

ORIGINAL ARTICLE
Year
: 2015  |  Volume : 14  |  Issue : 3  |  Page : 132--136

Relationship between ultrasound estimated fetal gestational age and cerebellar appearance in healthy pregnant Nigerian women


Ademola A Adeyekun, Michael O Orji 
 Department of Radiology, University of Benin Teaching Hospital, PMB 1111, Benin City, Nigeria

Correspondence Address:
Ademola A Adeyekun
Department of Radiology, University of Benin Teaching Hospital, PMB 1111, Benin City
Nigeria

Background: Fetal biometry by ultrasound provides reliable and important information about fetal growth and wellbeing. Evaluation of the fetal posterior fossa is useful in the assessment of neural tube-defects. Studies on normal ultrasound fetal cerebellar appearance and diameter across gestational age (GA) are scanty in the Nigerian medical literature. This study was carried out to study normal fetal cerebellar appearance and diameter at various GAs among healthy pregnant Nigerian Africans. Materials and Methods: This was a prospective study of 450 healthy singleton pregnant women between 13 and 42 weeks gestation. A curvilinear probe with a 3.5 MHz transducer of a SonoAce X6 (Medison Inc., Korea 2010) scanner was used to assess fetal transcerebellar diameter (TCD) and appearance. GA was also determined using fetal biometric parameters such as the biparietal diameter, femur length, and abdominal circumference. Fetal cerebellar appearance was correlated against GA. Results: The cerebellar appearance was graded into: Grade I: 164 fetuses (36.4%), Grade II; 102 fetuses (22.7%) and Grade III: 184 fetuses (40.9%). Mean GA and TCD was 21 weeks and 21.2 mm for Grade I; 28 weeks and 32.6 mm for Grade II; and 35 weeks and 47.1 mm for Grade III. There was significance difference among the cerebellar grades at the GA groups and transverse cerebellar diameter (P < 0.000). Conclusion: There is a gradual and steady change in ultrasonographic appearance of the fetal cerebellar and diameter appearance with advancing gestation. The changes ranged from anechoic, DQpair of eye glassDQ appearance at second trimester to relatively echogenic, DQdumb-bellDQ appearance at early third trimester, and solid, DQfan-shapeDQ in late third trimester.


How to cite this article:
Adeyekun AA, Orji MO. Relationship between ultrasound estimated fetal gestational age and cerebellar appearance in healthy pregnant Nigerian women.Ann Afr Med 2015;14:132-136


How to cite this URL:
Adeyekun AA, Orji MO. Relationship between ultrasound estimated fetal gestational age and cerebellar appearance in healthy pregnant Nigerian women. Ann Afr Med [serial online] 2015 [cited 2020 Nov 30 ];14:132-136
Available from: https://www.annalsafrmed.org/article.asp?issn=1596-3519;year=2015;volume=14;issue=3;spage=132;epage=136;aulast=Adeyekun;type=0