A5074444907- Maternal and fetal healthcare
- Pregnancy and preeclampsia studies
- Prenatal Screening and Diagnostics
- Fetal and Pediatric Neurological Disorders
- COVID-19 Impact on Reproduction
- Maternal and Perinatal Health Interventions
- Congenital Heart Disease Studies
- Assisted Reproductive Technology and Twin Pregnancy
- Gestational Diabetes Research and Management
- Birth, Development, and Health
- COVID-19 and healthcare impacts
- Ectopic Pregnancy Diagnosis and Management
- Pregnancy-related medical research
- Congenital Diaphragmatic Hernia Studies
- Ultrasound in Clinical Applications
- Generative Adversarial Networks and Image Synthesis
- Congenital Anomalies and Fetal Surgery
- Uterine Myomas and Treatments
- Artificial Intelligence in Healthcare and Education
- COVID-19 Digital Contact Tracing
- Advanced Neural Network Applications
- Organ Donation and Transplantation
- Neonatal Respiratory Health Research
- Intestinal and Peritoneal Adhesions
- Parvovirus B19 Infection Studies
Showa University
2015-2024
Showa University Hospital
2022
John Wiley & Sons (United Kingdom)
2020
Hudson Institute
2020
Artificial Intelligence (AI) technologies have recently been applied to medical imaging for diagnostic support. With respect fetal ultrasound screening of congenital heart disease (CHD), it is still challenging achieve consistently accurate diagnoses owing its manual operation and the technical differences among examiners. Hence, we proposed an architecture Supervised Object detection with Normal data Only (SONO), based on a convolutional neural network (CNN), detect cardiac substructures...
Diagnostic support tools based on artificial intelligence (AI) have exhibited high performance in various medical fields. However, their clinical application remains challenging because of the lack explanatory power AI decisions (black box problem), making it difficult to build trust with professionals. Nevertheless, visualizing internal representation deep neural networks will increase and improve confidence professionals decisions. We propose a novel learning-based explainable “graph chart...
Image segmentation is the pixel-by-pixel detection of objects, which most challenging but informative in fundamental tasks machine learning including image classification and object detection. Pixel-by-pixel required to apply support fetal cardiac ultrasound screening; we have detect substructures precisely are small change shapes dynamically with heartbeats, such as ventricular septum. This task difficult for general methods DeepLab v3+, U-net. Hence, here proposed a novel method named...
To clarify the effectiveness of ultrasound screening at 36 weeks' gestation for predicting a non-reassuring fetal status during labor (NRFS).A prospective cohort study was conducted between 2012 and 2013. Ultrasound evaluations umbilical cord placental abnormalities biometry were performed among pregnant females gestation. Patients who underwent divided into three risk level groups according to their abnormalities. After delivery, NRFS emergency Cesarean section (eCS) rate compared groups.A...
To determine whether uterine artery (UtA) Doppler findings and three-dimensional (3D) ultrasound measurement of placental volume during the first trimester allowed prediction early- late-onset pregnancy-induced hypertension (early PIH late PIH).Subjects with singleton pregnancy who underwent an scan at 11-13 weeks' gestation delivered between 2011 2013 were enrolled prospectively into study. The UtA indices on 3D in cases that developed early (< 34 weeks) or later (≥ compared values...
The application of segmentation methods to medical imaging has the potential create novel diagnostic support models. With respect fetal ultrasound, thoracic wall is a key structure on assessment chest region for examiners recognize relative orientation and size structures inside thorax, which are critical components in neonatal prognosis. In this study, improve performance ultrasound videos, we proposed model-agnostic method using deep learning techniques: Multi-Frame + Cylinder (MFCY)....
Acoustic shadows are common artifacts in medical ultrasound imaging. The caused by objects that reflect such as bones, and they shown dark areas images. Detecting is crucial for assessing the quality of This will be a pre-processing further image processing or recognition aiming computer-aided diagnosis. In this paper, we propose an auto-encoding structure estimates shadowed their intensities. model once splits input into estimated shadow shadow-free through its encoder decoder. Then, it...
This study aimed to clarify the relationship between maternal mortality and advanced age in Japan provide useful information for future perinatal management. Maternal death rates by group were investigated all deaths an 11-year period, from 2010 2021. among those aged ≥ 40 years examined detail determine cause, number of cause was calculated. The causes onset most common also investigated. 0.8 (95% confidence interval [CI] 0.3-4.7) < 20 years, 2.6 CI 1.7-3.8) 20-24 2.9 2.3-3.6) 25-29 3.9...
In order to prevent fetal mortality due vasa previa, it is necessary obtain an antenatal diagnosis and perform elective cesarean section prior membrane rupture. Under present circumstances, management strategies for previa depend on each institutional policy. our institution, patients are not routinely admitted, although precise outpatient management, including confirming the presence of uterine contractions monitoring cervical length, growth heart rate, provided pregnant females with...
Abstract Aim The aim of this study was to evaluate the effect long‐term use tocolytic agents prevent preterm delivery and improve perinatal outcome. Methods A historical cohort performed in a single center. maternal characteristics, frequency labor prescribed dose were compared before after changing management protocol for threatened premature delivery. Results total 1548 deliveries carried out 1444 afterwards. There no significant difference characteristics revision except age. number...
Unlike Europe and the United States, Japan has seen numerous maternal deaths from hemorrhagic strokes related to hypertensive disorders of pregnancy (HDP). This study retrospectively analyzed associated with HDP-related stroke in determine number that may have been prevented blood pressure control during pregnancy.This included cases. The proportion patients without proteinuria whose exceeded 140/90 mmHg between 14+0 33+6 weeks gestation were determined. Lastly, application tight...
Abstract Objective: To investigate, how causes of intrauterine fetal death (IUFD) have changed in recent years with the advancement prenatal diagnosis at a single perinatal center Japan. Methods: Medical records were retrospectively reviewed for all cases IUFDs that occurred between 2001 and 2014. The most commonly associated deaths compared 2001–2007 2008–2014. Results: number IUFD after 20 weeks’ gestation/all deliveries our was 38/6878 (0.53%) 35/7326 (0.48%) leading cause abnormalities...
Objective To identify independent risk factors for severe COVID-19 in pregnant women and to evaluate the impact of disease severity on preterm birth. Design A case–control study based data from a nationwide questionnaire-based survey maternity services Japan. Setting questionnaire was mailed all 2135 delivery institutions Japan between July August 2021. total 1288 responded (60% Japan). 566 facilities reported having cared with COVID-19, 722 had no such patients. Participants One thousand...
Cardiovascular disease (CVD) is the leading cause of maternal deaths in high-income countries. This study aimed to assess characteristics due CVDs and quality care provided patients, identify elements improve Japan.This descriptive used death registration data Maternal Deaths Exploratory Committee Japan between 2010 2019.Of 445 eligible pregnancy-related deaths, 44 (9.9%) were attributed CVD. The most frequent was aortic dissection (18 40.9%), followed by peripartum cardiomyopathy (8 18.2%),...
mRNA vaccination is an effective, safe, and widespread strategy for protecting pregnant women against infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, information on factors such as perinatal outcomes, safety, coverage of vaccinations among limited in Japan. Therefore, this study aimed to investigate the coverage, adverse effects, short-term safety well vaccine hesitancy women.We conducted a multicenter online survey postpartum who delivered...
We have developed a novel fetal cardiac screening system that is used deep leaning technology. This can real-timely and automatically detect each part in echocardiographic movie was acquired 2nd trimester examination. Artificial intelligence (AI) based on convolutional neural networks. Whereas, the decision process of AI, especially learning, has been unexplainable still black box. Therefore, we tried to visualise explain its toward practical utilisation our clinic. 42 normal heart movies...
Purpose: To assess whether the ultrasonographic measurement of inferior vena cava (IVC) diameter in postpartum women is a useful parameter evaluating actual blood loss during delivery due to massive hemorrhage. Materials and methods: In with ≥500 g, abdominal ultrasonography was performed 1 hour after delivery. The IVC measured inspiration (IVCi) expiration (IVCe). maternal heart rate, pressure, shock index (heart rate/systolic pressure) were also measured. predictive value these parameters...
Hemorrhagic shock is a relatively common occurrence in the postpartum period. In our hospital, we performed abdominal ultrasonography using focused assessment with sonography for obstetrics (FASO) technique (a modified version of FAST). The aim present study was to determine reference values ultrasonographic findings establish criteria diagnosis hemorrhage and severe FASO.The prospective cohort included all women who vaginally delivered singleton infants. Abdominal after delivery....