Ko Watanabe

ORCID: 0000-0003-0252-1785
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About
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Research Areas
  • Gastric Cancer Management and Outcomes
  • Pancreatic and Hepatic Oncology Research
  • Metastasis and carcinoma case studies
  • Gastrointestinal Tumor Research and Treatment
  • Esophageal and GI Pathology
  • Neuroendocrine Tumor Research Advances
  • Pancreatitis Pathology and Treatment
  • Gallbladder and Bile Duct Disorders
  • Helicobacter pylori-related gastroenterology studies
  • Gastrointestinal disorders and treatments
  • Esophageal Cancer Research and Treatment
  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Gastroesophageal reflux and treatments
  • IgG4-Related and Inflammatory Diseases
  • Non-Invasive Vital Sign Monitoring
  • Pediatric Hepatobiliary Diseases and Treatments
  • Speech and dialogue systems
  • Geothermal Energy Systems and Applications
  • EEG and Brain-Computer Interfaces
  • Inflammatory Biomarkers in Disease Prognosis
  • Cancer Genomics and Diagnostics
  • Personal Information Management and User Behavior
  • Autopsy Techniques and Outcomes
  • Dysphagia Assessment and Management
  • Video Analysis and Summarization

Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau
2023-2025

German Research Centre for Artificial Intelligence
2022-2025

Seirei Hamamatsu General Hospital
2021-2025

University of Koblenz and Landau
2024-2025

University of Kaiserslautern
2021-2024

Hosei University
2003-2022

Fukushima Medical University Hospital
2014-2021

Fukushima Medical University
2012-2021

Nara Institute of Science and Technology
2017-2018

University Gastroenterology
2018

Introduction: A prior study with 22‐gauge needles recommended more than seven needle passes for endoscopic ultrasound‐guided fine‐needle aspiration biopsy (EUS‐FNA) of solid pancreatic lesions (SPL) without onsite cytopathology optimal acquisition cytopathological diagnosis. The feasibility this recommendation should be re‐evaluated considering the later development and popularity 25‐gauge EUS‐FNA needles. We aimed to determine number specimen SPL. Methods: preliminary prospective 22...

10.1111/j.1443-1661.2012.01311.x article EN Digestive Endoscopy 2012-04-10

As gemcitabine is a key anti-tumor agent for unresectable pancreatic ductal adenocarcinoma (PDAC), it important to predict the outcomes of chemotherapy. The present study aimed confirm whether derived neutrophil‑to‑lymphocyte ratio (dNLR) able chemotherapy outcomes. To elucidate role dNLR in patients that underwent chemotherapy, current evaluated clinicopathological variables 31 with PDAC treated gemcitabine. correlation between variables, and progression‑free survival (PFS) overall (OS)...

10.3892/ol.2016.4381 article EN Oncology Letters 2016-03-29

Human-in-the-loop (HITL) frameworks are increasingly recognized for their potential to improve annotation accuracy in emotion estimation systems by combining machine predictions with human expertise. This study focuses on integrating a high-performing image-based model into HITL framework evaluate the collaborative of human-machine interaction and identify psychological practical factors critical successful collaboration. Specifically, we investigate how varying reliability cognitive framing...

10.48550/arxiv.2502.07404 preprint EN arXiv (Cornell University) 2025-02-11

Personal space, also known as peripersonal is crucial in human social interaction, influencing comfort, communication, and stress. Estimating respecting personal space essential for enhancing human-computer interaction (HCI) smart environments. preferences vary due to individual traits, cultural background, contextual factors. Advanced multimodal sensing technologies, including eye-tracking wristband sensors, offer opportunities develop adaptive systems that dynamically adjust user comfort...

10.48550/arxiv.2502.07441 preprint EN arXiv (Cornell University) 2025-02-11

10.5220/0013162800003890 article EN Proceedings of the 14th International Conference on Agents and Artificial Intelligence 2025-01-01

The COVID-19 pandemic has had a significant impact on healthcare, including cancer management. This study aimed to investigate the prognostic of pandemic, throughout its duration, patient care for pancreatic ductal adenocarcinoma (PDAC). We collected clinical data patients with unresectable PDAC who underwent palliative chemotherapy at five medical facilities in Fukushima, Japan. were divided into two groups: group A (nonpandemic cohort) and B (pandemic cohort). Survival analysis was...

10.5387/fms.24-00011 article EN FUKUSHIMA JOURNAL OF MEDICAL SCIENCE 2025-01-01

Background: Large-scale radiographic datasets often include errors in labels such as body–part or projection, which can undermine automated image analysis. Purpose: To develop and externally validate two deep learning models—one for categorizing radiographs by body-part, another identifying projection rotation of chest radiographs—using large, diverse datasets. Methods: We retrospectively collected from multiple institutions public repositories. For the first model (Xp-Bodypart-Checker), we...

10.1101/2025.03.12.25322948 preprint EN public-domain medRxiv (Cold Spring Harbor Laboratory) 2025-03-15

Measuring the level of engagement among participants in a meeting is crucial for evaluating collective understanding. While previous studies have utilized multiple sensors, such as wearable devices, to gauge levels offline environments, shift remote meetings due COVID-19 pandemic presents new challenges. In this study, we propose method measuring student during online using only built-in web cameras on their devices. We collect high, middle, and low recording data from 24 students. decided...

10.1109/access.2023.3279428 article EN cc-by-nc-nd IEEE Access 2023-01-01

Engagement is one of the core cognitive states in communication. Increased engagement improves quality and immersion conversation. In this demonstration, we aim to present a metacognition augmentation application called Metacognition-EnGauge. This work aims discover three research questions. Does self-metacognition levels support participant be engaged meetings? group-metacognition Do participants prefer none, self, or intervention online To answer these questions, conducted meeting...

10.1145/3652920.3653054 article EN 2024-04-04

Fixation of an esophageal self-expandable metal stent (SEMS) with over-the-scope-clip (OTSC) system for a benign stricture to prevent migration has been reported. However, the efficacy SEMS fixation OTSC malignant remains unclear. The aim this retrospective study was evaluate feasibility stricture.Twelve patients who underwent placement and were included in study. primary endpoint technical success. secondary clinical success, which defined as improvement at least 1 grade dysphagia score...

10.1055/s-0043-111793 article EN cc-by-nc-nd Endoscopy International Open 2017-10-26

Background and study aims The safety efficacy of endoscopic submucosal dissection (ESD) for early gastric cancer (EGC) in very elderly patients remains unclear. aim this was to evaluate the ESD EGC age 85 years older. Patients methods who underwent between September 2003 April 2015 were divided into 3 groups: (≥ years; 43 patients), (65 - 84 511 non-elderly ( ≤ 64 161 patients). Adverse events (AEs) used as primary endpoint assess ESD, treatment outcomes (i. e., en bloc resection rate,...

10.1055/s-0042-122960 article EN cc-by-nc-nd Endoscopy International Open 2017-01-01

To investigate the location to which a pancreatic stent should be inserted prevent post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP).Over ten-year period at our hospital, 296 patients underwent their first ERCP procedure and had inserted; this study included 147 who performed primarily for biliary investigation PEP. We divided these into two groups: 131 with head (head group) 16 up body or tail (body/tail group). Patient characteristics factors were compared...

10.3748/wjg.v24.i22.2392 article EN cc-by-nc World Journal of Gastroenterology 2018-06-08

The management of health through daily monitoring heartbeat and respiration signals is major importance for early diagnosis to prevent diseases the respiratory circulatory system. However, such possible only if system physically psychologically noninvasive. In this paper, an unconstrained method measuring signals, by using a thermistor measure air flows from mattress tube accompanying subject's respiration, proposed. SN ratio with interference opening closing door as environmental noise was...

10.1109/tbcas.2012.2189007 article EN IEEE Transactions on Biomedical Circuits and Systems 2012-04-09

Schwannomas are difficult to diagnose using imaging alone. Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is an effective and safe tissue sampling technique. Nevertheless, few reports have described EUS-FNA for schwannoma.This study evaluates the efficacy of diagnosing retrospective examined six consecutive schwannoma patients who were diagnosed as having either from results or surgically resected specimens. The primary endpoint was diagnostic accuracy schwannoma. secondary...

10.5387/fms.2015-21 article EN FUKUSHIMA JOURNAL OF MEDICAL SCIENCE 2017-01-01

The aim of this study was to review the efficacy contrast-enhanced harmonic endoscopic ultrasonography (CH-EUS) in diagnosing gallbladder (GB)-protruded lesions. Thirty-eight patients underwent CH-EUS for diagnosis GB-protruded Twenty-four whose major axes their largest lesions were longer than 10 mm recruited. ability diagnose malignant or benign reviewed. We treated with brindled enhanced patterns as and those uniformly unenhanced benign. Furthermore, three gastroenterologists who not...

10.1038/srep25848 article EN cc-by Scientific Reports 2016-05-10

Objectives The aim of this study was to review the suitability endoscopic ultrasonography‐guided fine needle aspiration (EUS‐FNA) for ruling out malignancy in autoimmune pancreatitis patients. Methods We retrospectively reviewed 40 patients (type 1:37 patients; type 2: two possible pancreatitis: one patient) who received EUS‐FNA. Among patients, 34 were not histopathologically diagnosed with by EUS‐FNA, and they followed up more than 6 months our hospital. Moreover, 14 pancreatic cancer...

10.1002/jum.14265 article EN Journal of Ultrasound in Medicine 2017-07-03

This paper describes a non-invasive, less restrictive, stable measurement system for brain-computer interface (BCI) second-language (L2) learning. The outputs the arousal of Yerkes-Dodson law. We employ non-invasive near-infrared spectroscopy (NIRS) as basic device to measure blood volume. However, volume measured by NIRS includes base-line drift and is not stable. Here, we introduce new drift-free variable defined flow, which time derivative Problems be considered are: 1) Can flow represent...

10.1109/jsen.2016.2519886 article EN IEEE Sensors Journal 2016-01-20
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