Aya Koyanagi
Okayama, 7010204, Japan
Last Updated: 09/26/2026
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Found 20 publications
Embryonic reference values for nuchal translucency thickness and ductus venosus blood flow at 8-10 + 6 gestational weeks.
Journal: Journal of medical ultrasonics (2001)
Published: November 25, 2025
Reference values for Japanese fetal penile length.
Journal: Journal of medical ultrasonics (2001)
Published: October 30, 2025
Reply.
Journal: Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology
Published: July 29, 2025
Abnormal fetal genitalia: two- and three-dimensional ultrasound assessment.
Journal: Journal of perinatal medicine
Published: April 17, 2025
Embryonic and Fetal Heart Development Before 12 Weeks of Gestation.
Journal: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine
Published: July 02, 2024
Fetal hyaloid artery in first trimester of pregnancy: slowflowHD study.
Journal: Case reports in perinatal medicine
Published: June 09, 2024
Transvaginal SlowflowHD for embryonic and fetal hearts: human cardiac development in first trimester of pregnancy.
Journal: Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology
Published: March 08, 2024
Isolated small ventricular septal defects in utero: HDlive Flow with spatiotemporal image correlation and HDlive Silhouette case study.
Journal: Australasian journal of ultrasound in medicine
Published: September 13, 2023
Isolated tortuous ductus arteriosus in a fetus: HDlive Flow with spatiotemporal image correlation (STIC) study.
Journal: Journal of perinatal medicine
Published: October 29, 2022
Artificial intelligence to understand fluctuation of fetal brain activity by recognizing facial expressions.
Journal: International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics
Published: August 22, 2022
Natural Course of Fetal Hyaloid Artery: SlowflowHD Longitudinal Study.
Journal: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine
Published: September 03, 2021
Coarctation of the aorta and persistent left superior vena cava: HDlive Flow features at 14 weeks of gestation.
Journal: Case reports in perinatal medicine
Published: August 20, 2021
Last Updated: 09/26/2026