Korean Journal of Pediatrics 2009;52(10):1136-1139.
Published online October 15, 2009.
Relationship between the depth of cingulate sulcus on neonatal high resolution cranial ultrasound and gestational age
Young Chil Choi1, Jin Yong Choi2, Jung Hwa Lee3
1Department of Radiology, Konkuk University School of Medicine, Chungju, Korea
2Department of Neurology, Konkuk University School of Medicine, Chungju, Korea
3Department of Pediatrics, Konkuk University School of Medicine, Chungju, Korea
신생아 고해상 뇌 초음파검사에서 대상고랑의 깊이와 재태기간과의 관계
최영칠1, 최진영2, 이정화3
1건국대학교 의학전문대학원 영상의학교실
2건국대학교 의학전문대학원 신경과학교실
3건국대학교 의학전문대학원 소아과학교실
Correspondence: 
Jung Hwa Lee, Email: decidua@hanmail.net
Abstract
Purpose
: It is critical that the exact gestational age of a newborn baby, especially premature baby, be determined to evaluate the status of a disease and its management and to estimate the prognosis of a patient. This study aimed to investigate an easy and accurate method to estimate gestational age on cranial ultrasound, requiring minimal additional time and equipment.
Methods
: A high-resolution coronal sonographic image was obtained via the anterior fontanel with a 5-12 Mhz linear probe after the usual cranial sonographic examination. We measured the depth of cerebral hemisphere, thickness of corpus callosum, and depth of cingulate sulcus and obtained the correlations between these factors and gestational age.
Results
: Depth of cingulate sulcus had the highest correlation coefficiency with gestational age (r=0.878, P=0.000). All the cases, except for 2 cases, had a gestational age of more than 37 weeks, when the depths of cingulate sulcus were more than 0.55 cm, and had a gestational age less than 34 weeks, when the depths of cingulate sulcus were less than 0.35 cm.
Conclusion
: Measurement of the depth of cingulate sulcus was a simple and accurate method to estimate the gestational age on cranial ultrasound. The gestational age is more than 37 weeks, when the depth of cingulate sulcus is more than 0.55 cm, and is less than 34 weeks, when the depth of cingulate sulcus is less than 0.35 cm.
Key Words: Gestational age, Cranial ultrasound, Cingulate sulcus


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