Automatic ultrasound assessment of placenta previa during the third trimester for rural areas

Ana Cecilia Saavedra, Junior Arroyo, Lorena Tamayo, Miguel Egoavil, Berta Ramos, Benjamin Castaneda

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

6 Citas (Scopus)


Placenta previa describes the abnormal implantation of the placenta in the uterus of pregnant women, entirely or partially obstructing the internal cervical os. For clinical significance, it is suggested to assess the final placental location in the third trimester. In rural areas of developing countries, the absence of radiologists and sophisticated ultrasound systems make difficult the diagnosis of this condition. Ten pregnant women in their third trimester (age range of 22-43 years) were enrolled in this study. A volume sweep imaging obstetric protocol based on eight free-hand sweeping (three transverse and five longitudinal throughout the maternal abdominal area) was used. The acquisition was performed using a portable ultrasound scanner by a non-specialist. The dataset consisted of eight videos per volunteer and one hundred frames per video on average. Placental segmentation was carried out using the U-Net deep learning architecture and the leave one out cross-validation approach. The output masks combined with the knowledge of the acquisition protocol allowed to assess the spatial location likelihood of the placenta in the uterus, which is represented by a heat map. The method showed a sensitivity of 75% and a specificity of 92 %. Albeit the need for further validation, this approach may automatically warn of possible risks in childbirth, giving the chance to notify the specialist.

Idioma originalInglés
Título de la publicación alojadaIUS 2020 - International Ultrasonics Symposium, Proceedings
EditorialIEEE Computer Society
ISBN (versión digital)9781728154480
EstadoPublicada - 7 set. 2020
Evento2020 IEEE International Ultrasonics Symposium, IUS 2020 - Las Vegas, Estados Unidos
Duración: 7 set. 202011 set. 2020

Serie de la publicación

NombreIEEE International Ultrasonics Symposium, IUS
ISSN (versión impresa)1948-5719
ISSN (versión digital)1948-5727


Conferencia2020 IEEE International Ultrasonics Symposium, IUS 2020
País/TerritorioEstados Unidos
CiudadLas Vegas


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