Genetic structures of allopatric and sympatric populations in Pseudorasbora pumila pumila and Pseudorasbora parva

K Koga, A Goto - Ichthyological Research, 2005 - Springer
Pseudorasbora pumila pumila was collected to investigate its genetic relationships from 11
localities in Hokkaido and eastern Honshu of Japan with Pseudorasbora parva from 6 …

Development of automated extraction method of biliary tract from abdominal CT volumes based on local intensity structure analysis

K Koga, Y Hayashi, T Hirose, M Oda… - Medical Imaging …, 2014 - spiedigitallibrary.org
In this paper, we propose an automated biliary tract extraction method from abdominal CT
volumes. The biliary tract is the path by which bile is transported from liver to the duodenum. …

The development of an automatically produced cholangiography procedure using the reconstruction of portal-phase multidetector-row computed tomography images …

T Hirose, T Igami, K Koga, Y Hayashi, T Ebata… - Surgery today, 2017 - Springer
Purpose Fusion angiography using reconstructed multidetector-row computed tomography (MDCT)
images, and cholangiography using reconstructed images from MDCT with a …

A method for automated extraction of biliary tract from 3D abdominal contrast CT images based on local intensity structure analysis

K Koga, Y Hayashi, T Hirose, M Oda… - … Report; IEICE Tech …, 2013 - ken.ieice.org
(in English) In this paper, we propose a method for automated extraction of the biliary tract
from abdominal contrast CT volumes based on local intensity structure analysis. Our method …

Development of segmentation method of bile duct from abdominal CT volumes by using Support Vector Machine

K Koga, Y Hayashi, T Hirose, M Oda… - … Report; IEICE Tech …, 2015 - ken.ieice.org
(in English) In this paper, we propose a segmentation method of bile duct (BD) from abdominal
CT volumes. In order to classify voxels into BD or its surrounding tissues, our method …

Expression of TrkB and BDNF is associated with poor prognosis in non-small cell lung cancer

…, T Harada, S Wang, K Ijichi, K Furuyama, T Koga… - Lung cancer, 2012 - Elsevier
High expression levels of TrkB and BDNF are associated with aggressive malignant behavior
in tumor cells and a poor prognosis in patients with various types of cancer. In this study, …

Can PD-L1 expression evaluated by biopsy sample accurately reflect its expression in the whole tumour in gastric cancer?

K Yamashita, M Iwatsuki, K Harada, Y Koga… - British journal of …, 2019 - nature.com
Programmed death ligand 1 (PD-L1) expression as a predictive biomarker for programmed
cell death 1 (PD-1) inhibitor efficacy in gastric cancer (GC) remains controversial. We …

Ferromagnetism of cold fermions loaded into a decorated square lattice

K Noda, A Koga, N Kawakami, T Pruschke - Physical Review A—Atomic …, 2009 - APS
We investigate two-component ultracold fermions loaded into a decorated square lattice,
which are described by the Hubbard model with repulsive interactions and nearest-neighbor …

Prospective evaluation of common hepatic duct histopathology at the time of choledochal cyst excision ranging from children to adults

K Nikai, H Koga, K Suda, K Miyahara, GJ Lane… - Pediatric Surgery …, 2023 - Springer
Purpose To evaluate common hepatic duct just distal to the HE anastomosis (d-CHD)
prospectively for mucosal damage, inflammation, fibrosis, dysplasia, carcinoma in situ, malignant …

Induction of mitosis in primary cultures of adult rat hepatocytes under serum-free conditions

K Hasegawa, K Watanabe, M Koga - Biochemical and Biophysical …, 1982 - Elsevier
When adult rat hepatocytes were cultured in a serum-free, hormone-supplemented medium
containing 1 mM of Ca 2+ , DNA synthesis was induced in about 50% of hepatocytes. …