Publications by authors named "A Ohya"
Purpose: To reveal problems of magnetic resonance imaging (MRI) for diagnosing gastric-type mucin-positive (GMPLs) and gastric-type mucin-negative (GMNLs) cervical lesions.
Methods: We selected 172 patients suspected to have lobular endocervical glandular hyperplasia; their pelvic MR images were categorised into the training (n = 132) and validation (n = 40) groups. The images of the validation group were read twice by three pairs of six readers to reveal the accuracy, area under the curve (AUC), and intraclass correlation coefficient (ICC).
Purpose: The purposes of the study are to assess the diagnostic performance of preoperative imaging for staging factors in gastric-type endocervical adenocarcinoma (GEA) and to compare the performance for GEA with that of usual-type endocervical adenocarcinoma (UEA) among patients preoperatively deemed locally early stage (DLES) (< T2b without distant metastasis).
Materials And Methods: For this multi-center retrospective study, 58 patients were enrolled. All had undergone MRI with or without CT and FDG PET-CT preoperatively and had been pathologically diagnosed with GEA at five institutions.
Article Synopsis
- The study focuses on placenta previa complicated by placenta accrete spectrum (PAS), emphasizing the need for preoperative diagnosis to ensure proper management of this serious condition.
- Researchers analyzed MRI images from 145 patients to identify 11 features related to PAS, finding eight features significantly correlated with the condition, particularly placental/uterine bulge and myometrial thinning.
- A decision tree model, based on five key MRI features, was developed and demonstrated high sensitivity (90%) and specificity (95.5%) for predicting PAS in patients diagnosed with placenta previa.
Background: Primary ciliary dyskinesia (PCD) is a rare genetic disease caused by defects in various genes affecting ciliary function. It is currently unclear why DRC1 gene variants are a relatively frequent cause of disease in Japanese and Korean patients.
Methods: A 12-year-old Japanese girl with bronchiectasis was suspected of PCD and examined using whole-exome sequencing (WES).
Article Synopsis
- The study aimed to assess the performance of a specific mixture (n-butyl cyanoacrylate-Lipiodol-iopamidol) in embolizing medium-sized arteries using various scenarios, including the use of microcoils and flow control.
- An experimental model of the common hepatic artery was tested under six different embolization scenarios, observing the migration of the mixture after injection.
- Results showed that the mixture effectively embolized the arteries when combined with microcoils, especially with flow control, but without flow control, it led to partial migration of the mixture away from the target site.