Hiroto Sakamoto

ORCID: 0009-0004-8135-4421
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About
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Research Areas
  • Infrared Thermography in Medicine
  • Blind Source Separation Techniques
  • Gastric Cancer Management and Outcomes
  • Mechanical Circulatory Support Devices
  • Thermoregulation and physiological responses
  • Gas Sensing Nanomaterials and Sensors
  • Spectroscopy and Quantum Chemical Studies
  • Glycosylation and Glycoproteins Research
  • Monoclonal and Polyclonal Antibodies Research
  • Gastrointestinal Tumor Research and Treatment
  • Gastrointestinal disorders and treatments
  • Transition Metal Oxide Nanomaterials
  • Non-Invasive Vital Sign Monitoring
  • Kawasaki Disease and Coronary Complications
  • Diverse Aspects of Tourism Research
  • Advanced Steganography and Watermarking Techniques
  • Electrostatics and Colloid Interactions
  • Mycobacterium research and diagnosis
  • Sleep and Work-Related Fatigue
  • Quantum, superfluid, helium dynamics
  • Digital Filter Design and Implementation
  • Burn Injury Management and Outcomes
  • Organ Transplantation Techniques and Outcomes
  • Numerical methods for differential equations
  • T-cell and B-cell Immunology

Tenri Hospital
2023-2024

Osaka Red Cross Hospital
2023

Shinshu University
2021

Amada (Japan)
2020

Matsumoto City Hospital
2014-2017

Kyushu University
2006-2011

Faculty of Design
2006

Kyushu Institute of Technology
1978-2003

Kogakuin University
2002

Kagoshima City Hospital
1997

Multisystem inflammatory syndrome in children (MIS-C) is a rare temporally related to severe acute respiratory coronavirus 2 (SARS-CoV-2). MIS-C shares similarities with Kawasaki disease, but left ventricular dysfunction more common MIS-C.

10.1253/circj.cj-21-0243 article EN Circulation Journal 2021-05-12

Objective Chronic pulmonary aspergillosis (CPA) is an important complication of nontuberculous mycobacterial disease (NTM-PD). However, its diagnosis challenging, as both CPA and NTM-PD present chronic cavitary disease. The study evaluated the impact on survival patients with revealed key computed tomography findings for a prompt diagnosis. Methods We retrospectively reviewed newly diagnosed in Tenri Hospital (Tenri City, Nara Prefecture, Japan) between January 2009 March 2018; were followed...

10.2169/internalmedicine.0836-22 article EN Internal Medicine 2023-03-14

Pyogenic granuloma (PG) is a polypoid lobular capillary hemangioma rarely observed in the gastrointestinal tract. Only few cases small bowel have been described literature. A 58-year-old man had suffering from general fatigue and severe anemia. Esophagogastroduodenoscopy colonoscopy did not reveal any significant bleeding. Abdominal computer tomography revealed hypervascular tumor intestine. Oral double-balloon endoscopy (DBE) detected lesion (2 cm diameter) jejunum. We performed...

10.1186/s12876-015-0355-6 article EN cc-by BMC Gastroenterology 2015-10-06

Graft-versus-host disease (GVHD) is known to cause profound dysregulation of the immune system, although its effector mechanisms are poorly understood. We now describe an lymphocyte unusual phenotype in skin mice with GVHD. This cell donor origin and expresses several T-cell surface proteins including Thy-1, CD2, CD4 but does not express CD8, CD3, NK1.1, or macrophage antigens. Mononuclear cells this predominant epidermis GVHD 3 weeks after transplant detected transplanted without Isolation...

10.1073/pnas.88.23.10890 article EN Proceedings of the National Academy of Sciences 1991-12-01

A 74-year-old man with no overt symptoms was referred for a chest computed tomography (CT) that revealed multiple bilaterally pulmonary ground-glass nodules (GGNs) subtle changes in size over eight months. Surgical lung biopsies were performed the left upper lobe. pathologic study confirmed intravascular large B-cell lymphoma (IVLBCL). This lesion nodule-like cluster of atypical cells, meaning it had been localized several Pulmonary IVLBCL may form focal lesions presenting as GGN on CT and...

10.2169/internalmedicine.2040-23 article EN Internal Medicine 2023-07-04

In this paper, two techniques are proposed for accelerating and stabilizing the Levenberg-Marquardt (LM) method where its conventional stabilizer matrix (identity matrix) is superseded by (1) a diagonal whose elements column norms of Jacobian J, or (2) non-diagonal square root JTJ. Geometrically, these make constraint conditions LM fitted better to relevant cost function than one. Results numerical simulations show that effective when both norm ratio J mutual interactions between arguments...

10.1093/ietfec/e88-a.7.1971 article EN IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences 2005-07-01

Nivolumab plus ipilimumab is one of the first-line treatments for advanced non-small-cell lung cancer (NSCLC), but safety and efficacy in patients on hemodialysis (HD) unclear. We herein report a patient with NSCLC HD whom nivolumab were initiated. observed general deterioration enlarged lesions, followed by long-term response. The developed secondary hypoadrenocorticism, an immune-related adverse event that was easily controlled. can be used safely HD. Long-term effectiveness after initial...

10.2169/internalmedicine.2270-23 article EN Internal Medicine 2023-08-08

The forest near paddies and village is called satoyama forest, which was historically utilized by local people. They had gathered fire wood, edible plants undergrowth as fertilizer. coexistence of human nature supported rich bio-diversity. However, most forests are nowadays being abandoned the biodiversity declined modernization in people's life styles agricultural activities. We consider should be recreation sites where people can enjoy hiking, gathering so on. Then public authorities must...

10.2750/arp.25.99 article EN JOURNAL OF RURAL PLANNING ASSOCIATION 2006-01-01

We propose an efficient encoding algorithm which decomposes a picture matrix A to singular values and eigen vectors of AA/sup T/ A/sup T/A, then encodes the DCT coefficients by PCM. transform first decomposed term, are flat do not have higher frequency components, 1 dimensional coefficients. The magnitude is small when vector flat, allowing us encode efficiently using this characteristic. For terms other than we able PCM with number bits without increasing quantization noise, since very small.

10.1109/icc.1995.524437 article EN 2002-11-19

This paper examines indigenous development in rural areas by tourism. As a method of evaluation, this estimates the economic effects (direct effects, indirect effects) yielded tourism using input-output analysis. The research example taken up is three community-based business (CTB) Yachiyo-Town, Hyogo Prefecture. Allotment (Freuden-Yachiyo), Restaurant (Erleben-Yachiyo) and Hotel (Edel-Sasayuri). CTB managed resident, local groups government. purposes are as follows: first, to analyze...

10.7310/arfe1965.40.278 article EN Journal of Rural Problems 2004-01-01

The competitive associative net, called CAN2-2, is presented for learning to approximate time-varying dynamics of a plant in order control the plant. Although method has been shown effective previous studies, it uses gradient involving local minima problems. To overcome problems, we here consider an asymptotic situation, where number units net very large, and show that mean square error CAN2-2 approximating function decreases minimized as increases when firing numbers are equated. Next,...

10.1109/iconip.2002.1199004 article EN 2003-08-27

Hereditary angioneurotic edema is a familial disease due to the absence or functional deficiency of inhibitor activated first component complement. It characterized by recurrent attacks localized affect ing skin and mucosal membranes; laryngeal mucosa may be fatal. Because trauma surgical intervention become trigger attacks, pitfall for surgeons physicians always present. We recently encountered patient with hereditary who successfully underwent open- heart surgery following short-term...

10.1177/153857448702100210 article EN Vascular Surgery 1987-03-01

Long-distance procurement of canine hearts following preservation by coro nary perfusion was twice attempted simple cooling under septic conditions. Following cardiac arrest cardioplegia, the donor heart excised and switched to a Langendorff's model. Continuous hypothermic, low-pressure cor onary with 4 ° C new modified Krebs solution performed for seventeen hours. Thereafter, graft placed in thermal (4°C) protected environment. In transportation 2,124 km, automobiles commercial air lines...

10.1177/153857449002400101 article EN Vascular Surgery 1990-01-01
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