Yuya Nakano

ORCID: 0000-0002-4154-5467
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About
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Research Areas
  • Gastric Cancer Management and Outcomes
  • Handwritten Text Recognition Techniques
  • Advanced Image and Video Retrieval Techniques
  • Image Retrieval and Classification Techniques
  • Metastasis and carcinoma case studies
  • Esophageal Cancer Research and Treatment
  • Liver Disease Diagnosis and Treatment
  • Esophageal and GI Pathology
  • Face and Expression Recognition
  • Gastrointestinal Tumor Research and Treatment
  • Gallbladder and Bile Duct Disorders
  • Neuroendocrine Tumor Research Advances
  • Pancreatic and Hepatic Oncology Research
  • Liver Diseases and Immunity
  • Colorectal Cancer Surgical Treatments
  • Vehicle License Plate Recognition
  • Image and Object Detection Techniques
  • Gastrointestinal Bleeding Diagnosis and Treatment
  • Interconnection Networks and Systems
  • Complement system in diseases
  • Adrenal and Paraganglionic Tumors
  • Advanced Memory and Neural Computing
  • Pediatric Hepatobiliary Diseases and Treatments
  • Low-power high-performance VLSI design
  • Endometriosis Research and Treatment

Gunma Saiseikai Maebashi Hospital
2020-2025

Shizuoka Children's Hospital
2024

Saitama Medical University
2021-2022

Saitama International Medical Center
2022

Showa University
2009-2020

Kyoto Pharmaceutical University
2015

Tokushima Red Cross Hospital
2014

Chiba Hospital
2009

Kyushu Sangyo University
2004-2005

Shinshu University
1992-2003

A pattern-oriented segmentation method for optical character recognition that leads to document structure analysis is presented. As a first example, of handwritten numerals touch are treated. Connected pattern components extracted, and spatial interrelations between measured grouped into meaningful patterns. Stroke shapes analyzed finding the touching positions separates about 95% connected correctly described. Ambiguities handled by multiple hypotheses verification recognition. An extended...

10.1109/5.156471 article EN Proceedings of the IEEE 1992-07-01

Abstract Objectives Although a novel submucosal injection material consisting of fully synthetic, self‐assembling peptide solution, PuraLift, has recently become commercially available in Japan, there are few reports regarding the usefulness this solution. The aim study was to investigate feasibility PuraLift for conventional endoscopic mucosal resection (EMR) clinical practice. Methods This multicenter retrospective conducted at endoscopy units five institutions from January 2023 May 2023....

10.1002/deo2.70069 article EN cc-by DEN Open 2025-02-13

Objective The therapeutic effect of pemafibrate on metabolic dysfunction-associated fatty liver disease (MAFLD) remains unknown. This retrospective, single-arm study investigated the efficacy and safety in MAFLD patients with hypertriglyceridemia. Methods A total 10 who received (oral, 0.1 mg, twice a day) at Gunma Saiseikai Maebashi Hospital between September 2018 2019 were included. All underwent biopsy, grade stage pathologically assessed based FLIP algorithm. Results median age was 66.0...

10.2169/internalmedicine.6574-20 article EN Internal Medicine 2021-02-21

An algorithm to normalize the skew of document images is proposed. The angle detected in two stages. In first stage, connected regions an image are extracted and some feature parameters for each region. second Hough transform calculated parameters, which gives minimum estimated as angle. experiments using CCITT standard documents, a detection accuracy less than 0.1 degrees obtained printed documents. When graphical elements included documents addition characters, deteriorates 0.2 .< <ETX...

10.1109/icpr.1990.119320 article EN 2002-12-04

Abstract Colorectal endoscopic submucosal dissection (ESD) is a difficult procedure, and its introduction to trainees has been debated. Although the criteria for performing colorectal ESD vary among institutions, it often allowed after gaining experience surgeries in animals upper gastrointestinal ESD. This pilot study aimed compare treatment outcomes of performed by using multi-loop traction device (MLTD group) those conventional experts (control group). It also determine whether MLTD can...

10.1038/s41598-022-14407-3 article EN cc-by Scientific Reports 2022-06-17

This paper presents a digit classification system to recognize telephone numbers written on signboards. Candidate regions of digits are extracted from an image through edge extraction, enhancement and labeling. Since the in images often have skew slant, recognized after slant correction. To correct skew, Hough transform is used, corrected using method circumscribing with tilted rectangles. In experiments, we tested total 1332 signboards 11939 digits. We obtained extraction rate 99.2%...

10.1109/icdar.2003.1227689 article EN 2004-03-02

The purpose of our research is to improve the recognition rate offline character systems using HMM (Hidden Markov Model) without increasing number parameters too much. Some 2-dimensional have been proposed increase representational power. However since 2D has a much more complex structure and thus requires than 1-dimensional HMM, it becomes very hard gather sufficient samples in order guarantee successful generalization. To overcome problem, we propose method for 1D HMMs multiple directions...

10.1109/icdar.1999.791722 article EN 1999-01-01

The machine recognition of the 26 letters Roman alphabet presents some difficult problems and it does not take much imagination to see that Chinese characters is vastly more complex. reduction this complexity would therefore be great help, we shall describe in article a means simplifying problem.

10.1088/0031-9112/24/5/013 article EN Physics Bulletin 1973-05-01

1. The aim of this study was to develop a population pharmacokinetic (PK) model for 5-fluorouracil (5-FU) and perform simulations identify the circadian rhythm PK 5-FU degree effects on plasma concentrations.

10.3109/00498254.2015.1100767 article EN Xenobiotica 2015-10-27

This paper proposes a method to improve the off-line character classifiers which are learned from examples by using virtual synthesized on-line database. To obtain good classifiers, usually large database contains enough number of variations handwritten characters is required. However, in practice collecting data time-consuming and costly. In this paper, we propose train SVM for recognition based on artificially augmented characters. our method, example an applying affine transformation each...

10.1109/icdar.2005.170 article EN 2005-01-01

During conventional endoscopic submucosal dissection (ESD), increased intragastric pressure due to insufflation sometimes causes discomfort and pain the patient. However, gel immersion endoscopy (GIE), which has been developed improve intraoperative visualization identify bleeding point easily [1] [2] [3] [4], may reduce patient because it can be performed under low [5]. Here, we report a case of ESD superficial esophageal cancer via GIE, using novel product (VISCOCLEAR; Otsuka...

10.1055/a-1578-2543 article EN cc-by-nc-nd Endoscopy International Open 2021-11-01

A method of document structure extraction using generic layout knowledge is described. With this method, it possible to translate images multimedia documents, i.e. documents that include pictures, graphics, and color information, hypertext. Hypertext consists decomposed elements linked with each other through some logical relationship. The principal components the are a rectangular set operation generation hierarchical links between extracted elements. It shown experimentally technical paper...

10.1109/miv.1989.40564 article EN 2003-01-13

This paper proposed a new method for the face extraction from complex background. Based on space gray level dependence (SGLD) matrices, facial texture model composed by set of inequalities was derived. Using this textural model, authors designed kind scanning scheme detection in backgrounds. An experiment using 60 images containing 150 faces gave error rate 0% with false alarm 5.4%.

10.1109/icpr.1994.576245 article EN 2002-12-17

Endoscopic submucosal dissection (ESD) of anorectal tumors close to the dentate line poses an increased risk intraoperative and delayed bleeding due development venous flora, including hemorrhoids, in rectal submucosa. Moreover, narrow lumen proximity anal sphincter decrease maneuverability visibility resection field [1] [2]. Recently, during endoscopic hemostasis for gastrointestinal bleeding, “gel immersion endoscopy” technique, involving injection clear gel, was used displace blood clots...

10.1055/a-1519-6939 article EN Endoscopy 2021-07-02

This study aimed to investigate the effect of being overweight on outcome ablation therapy for patients with early-stage hepatocellular carcinoma (HCC). retrospective included 198 HCC who underwent radiofrequency or microwave at Gunma Saiseikai Maebashi Hospital between April 2017 and December 2021. We divided into two groups based their body mass index (BMI): (BMI ≥ 25 kg/m2, n = 74 (37.4%)) non-overweight &lt; 124 (62.6%)). The technical success rates (TSRs) in first session were 78.4%...

10.3390/cancers15041289 article EN Cancers 2023-02-17

Describes a method to improve the cumulative recognition rates of pattern using decision directed acyclic graph (DDAG) based on support vector machines (SVM). Though original DDAG has high level performance and its execution speed is fast, it does not consider so-called rate. We construct which can incorporate As result our experiment for handprinted Hiragana characters in JEITA-HP, rate improved time almost same as 30 times faster than Max Win Algorithm one famous methods multi-class problem.

10.1109/iwfhr.2002.1030884 article EN 2003-06-25

Abstract Esophageal endoscopic submucosal dissection (ESD) of tumors located on the gravity side is technically challenging. Given that gel immersion ESD (GIESD) performed by immersing lesions in gel, we hypothesized it could be used to eliminate disadvantage associated with submerging side. Here, GIESD using VISCOCLEAR for superficial esophageal cancer esophagus, monopolar devices. This study aimed evaluate short-term outcomes cancer. Fifteen patients 16 cancers underwent a single operator,...

10.1055/a-1894-0719 article EN cc-by-nc-nd Endoscopy International Open 2022-07-07

To evaluate the outcomes and factors influencing colorectal endoscopic submucosal dissection (ESD) with a long procedure time.In this single-center, retrospective study, we included 1,100 patients 1,199 lesions who underwent ESD between April 2016 December 2020. was performed using an advanced system knife for >20 mm. An S-O clip used as traction device. The long-time group (LP; time >120 min) normal-time (NP; <120 were compared.The times 166.86 44.72 min in LP NP groups, respectively....

10.1080/00365521.2021.1958000 article EN Scandinavian Journal of Gastroenterology 2021-07-29

要旨:Dabigatran etexilate methanesulfonate(プラザキサ®)内服中に症候性頭蓋内出血を来した症例を報告する.症例は5 例で,いずれも非弁膜性心房細動患者で,数年間ワルファリンコントロールの後,かかりつけ医によりdabigatran へ内服変更されていた.ワルファリンコントロール中のイベントはなく,dabigatran へ変更後1~2 カ月で頭蓋内出血を来し,直接当院に搬送されていた.搬入時の血液所見に凝固異常や,顕著な異常を認めず,腎機能障害が推測された症例も1 例のみであった.1 例は死亡し,1 例は植物状態となり社会復帰した症例は1 例のみであった.初診時には服薬情報が得られないまま手術的治療を行った症例もあり,複数の経口抗凝固薬が登場した現在重要な問題である.

10.3995/jstroke.36.186 article JA Nosotchu 2014-01-01

Recently, underwater endoscopic mucosal resection (UEMR) was introduced for superficial non-ampullary duodenal epithelial tumors (SNADETs), and good treatment outcomes have been reported [1] [2]. However, it can be difficult to maintain a sufficient amount of saline in the duodenum soak lesion. In some cases, target lesion cannot easily visualized because mixture intestinal juice, blood, saline, making accurate snaring difficult. To overcome this difficulty, we report unique approach using...

10.1055/a-1633-3303 article EN cc-by-nc-nd Endoscopy International Open 2021-12-01

Aims & Objectives: Intensive care unit-acquired weakness (ICU-AW) is a major complication in patients receiving long-term mechanical ventilation (MV). To prevent ICU-AW, our postoperative management of tracheoplasty has been modified to liberate from MV as early possible during the approximately 2 weeks tracheal intubation. The aim this study was reveal historical transition recovery time physical function and length hospital stay (LOS). Methods: A single center retrospective observational...

10.1097/01.pcc.0001085344.72519.02 article EN Pediatric Critical Care Medicine 2024-11-01

This paper proposes an experimental character recognition system to recognise place-names written on signboards. Recently, mobile phones with digital cameras and handy have be come popular, so we think this is useful. In experiments, tested a total of 112 natural scene images 320 characters. We obtained correct rate 99% place-name 98% (with rejection 2%).

10.1109/iwfhr.2002.1030916 article EN 2003-06-25
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