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  1. Article

    Open Access

    Modeling cerebrospinal fluid dynamics across the entire intracranial space through integration of four-dimensional flow and intravoxel incoherent motion magnetic resonance imaging

    Bidirectional reciprocal motion of cerebrospinal fluid (CSF) was quantified using four-dimensional (4D) flow magnetic resonance imaging (MRI) and intravoxel incoherent motion (IVIM) MRI. To estimate various CS...

    Shigeki Yamada, Tomohiro Otani, Satoshi Ii, Hirotaka Ito in Fluids and Barriers of the CNS (2024)

  2. No Access

    Article

    Prediction Model for Severe Thrombocytopenia Induced by Gemcitabine Plus Cisplatin Combination Therapy in Patients with Urothelial Cancer

    Chemotherapy-induced thrombocytopenia is often a use-limiting adverse reaction to gemcitabine and cisplatin (GC) combination chemotherapy, reducing therapeutic intensity, and, in some cases, requiring platelet...

    Noriaki Matsumoto, Tomohiro Mizuno, Yosuke Ando, Koki Kato in Clinical Drug Investigation (2024)

  3. Article

    Open Access

    Remote follow-up by pharmacists for blood pressure control in patients with hypertension: a systematic review and a meta-analysis of randomized controlled trials

    Hypertension is a major cause of cardiovascular diseases. Several recent studies reported that pharmacists’ remote follow-up reduced hypertension patients’ blood pressure (BP). This meta-analysis aims to verif...

    Noriaki Matsumoto, Tsuyoshi Nakai, Mikio Sakakibara, Yukinori Aimiya in Scientific Reports (2024)

  4. Article

    Open Access

    Preventive effect of intermittent cerebrospinal fluid drainage for secondary chronic hydrocephalus after aneurysmal subarachnoid hemorrhage

    The efficacy of intermittent cerebrospinal fluid (CSF) drainage compared with that of continuous CSF drainage in patients with subarachnoid hemorrhage (SAH) remains undetermined to date. Therefore, we investig...

    Tomoyasu Yamanaka, Yusuke Nishikawa, Takashi Iwata in Fluids and Barriers of the CNS (2023)

  5. Article

    Open Access

    Aging-related volume changes in the brain and cerebrospinal fluid using artificial intelligence-automated segmentation

    To verify the reliability of the volumes automatically segmented using a new artificial intelligence (AI)-based application and evaluate changes in the brain and CSF volume with healthy aging.

    Shigeki Yamada, Tomohiro Otani, Satoshi Ii, Hiroto Kawano in European Radiology (2023)

  6. Article

    Open Access

    Long-term outcomes of delayed clozapine initiation in treatment-resistant schizophrenia: a multicenter retrospective cohort study

    Clozapine is the only antipsychotic medication with proven efficacy against treatment-resistant schizophrenia. This multicenter retrospective cohort study aimed to evaluate the impact of a delay in clozapine i...

    Masakazu Hatano, Hiroyuki Kamei, Ippei Takeuchi, Kazuhiko Gomi in BMC Psychiatry (2023)

  7. Article

    Open Access

    Efficacy of surgical treatment on polypharmacy of elderly patients with lumbar spinal canal stenosis: retrospective exploratory research

    Polypharmacy is a growing public health problem occurring in all healthcare settings worldwide. Elderly patients with lumbar spinal canal stenosis (LSS) who manifest low back and neuropathic pain and have a hi...

    Sota Nagai, Risa Inagaki, Takehiro Michikawa, Soya Kawabata, Kaori Ito in BMC Geriatrics (2023)

  8. Article

    Open Access

    Usefulness of intravoxel incoherent motion MRI for visualizing slow cerebrospinal fluid motion

    In the cerebrospinal fluid (CSF) dynamics, the pulsations of cerebral arteries and brain is considered the main driving force for the reciprocating bidirectional CSF movements. However, measuring these complex...

    Shigeki Yamada, Shinnosuke Hiratsuka, Tomohiro Otani in Fluids and Barriers of the CNS (2023)

  9. Article

    Open Access

    Risk factors for unfavourable outcomes after shunt surgery in patients with idiopathic normal-pressure hydrocephalus

    A number of vascular risk factors (VRFs) have been reported to be associated with idiopathic normal-pressure hydrocephalus (iNPH), but it remains unclear whether these VRFs are related to patient outcomes afte...

    Erena Kobayashi, Shigenori Kanno, Nobuko Kawakami, Wataru Narita in Scientific Reports (2022)

  10. Article

    Open Access

    Improvement in the long-term care burden after surgical treatment of patients with idiopathic normal pressure hydrocephalus: a supplementary study

    Idiopathic normal pressure hydrocephalus (iNPH) is a surgically treatable syndrome commonly observed in older adults. However, it is unclear whether clinical improvements after surgery can effectively reduce t...

    Masatsune Ishikawa, Shigeki Yamada, Masakazu Miyajima, Hiroaki Kazui in Scientific Reports (2021)

  11. Article

    Open Access

    Exploring mechanisms of ventricular enlargement in idiopathic normal pressure hydrocephalus: a role of cerebrospinal fluid dynamics and motile cilia

    Idiopathic normal pressure hydrocephalus (iNPH) is considered an age-dependent chronic communicating hydrocephalus associated with cerebrospinal fluid (CSF) malabsorption; however, the aetiology of ventricular...

    Shigeki Yamada, Masatsune Ishikawa, Kazuhiko Nozaki in Fluids and Barriers of the CNS (2021)

  12. Article

    Open Access

    Risk factors for cancer-associated thrombosis in patients undergoing treatment with immune checkpoint inhibitors

    Purpose Anticancer agents are known to increase cancer-associated thrombosis (CAT) onset. CAT onset rate is reported to be 1.92% in cisplatin-based therapy, 6.1% in paclitaxel plus ramucirumab combination therapy...

    Yosuke Ando, Takahiro Hayashi, Reiko Sugimoto, Seira Nishibe in Investigational New Drugs (2020)

  13. No Access

    Article

    Cerebrospinal fluid dynamics in idiopathic normal pressure hydrocephalus on four-dimensional flow imaging

    To evaluate complex CSF movements and shear stress in patients with idiopathic normal pressure hydrocephalus (iNPH) on four-dimensional (4D) flow MRI.

    Shigeki Yamada, Masatsune Ishikawa, Hirotaka Ito, Kazuo Yamamoto in European Radiology (2020)

  14. Article

    Open Access

    Optical Study of the Electronic Structure and Lattice Dynamics of NdBaMn2O6 Single Crystals

    We investigated the electronic structure and lattice dynamics of double perovskite NdBaMn2O6 single crystals through spectroscopic ellipsometry and Raman scattering spectroscopy. The optical absorption band cente...

    Rea Divina Mero, Kirari Ogawa, Shigeki Yamada, Hsiang-Lin Liu in Scientific Reports (2019)

  15. Article

    Open Access

    Longitudinal morphological changes during recovery from brain deformation due to idiopathic normal pressure hydrocephalus after ventriculoperitoneal shunt surgery

    The present study aimed to examine time-dependent change in cerebrospinal fluid distribution and various radiological indices for evaluating shunt effectiveness in patients with idiopathic normal pressure hydr...

    Shigeki Yamada, Masatsune Ishikawa, Makoto Yamaguchi, Kazuo Yamamoto in Scientific Reports (2019)

  16. No Access

    Article

    Cost-effectiveness analysis of shunt surgery for idiopathic normal pressure hydrocephalus based on the SINPHONI and SINPHONI-2 trials

    We showed that ventriculoperitoneal (VP) shunt and lumboperitoneal (LP) shunt surgeries are beneficial for patients with idiopathic normal pressure hydrocephalus (iNPH) in the Study of Idiopathic Normal Pressu...

    Masahiro Kameda, Shigeki Yamada, Masamichi Atsuchi, Teruo Kimura in Acta Neurochirurgica (2017)

  17. Article

    Open Access

    Comparison between hypersensitivity reactions to cycles of modified FOLFOX6 and XELOX therapies in patients with colorectal cancer

    Although hypersensitivity reactions (HSRs) to oxaliplatin (L-OHP) therapy are well-documented, few reports have compared different therapies in terms of HSR occurrence. In this study, we compared the frequency...

    Hideki Ohta, Takahiro Hayashi, Sumie Murai in Cancer Chemotherapy and Pharmacology (2017)

  18. Article

    Open Access

    Magnetic metal-complex-conducting copolymer core–shell nanoassemblies for a single-drug anticancer platform

    Nanoparticulate agents for magnetic drug delivery systems (DDSs) have extensive applications in targeted drug delivery, contrast imaging and therapeutics. However, no simple synthetic method for magnetic DDS a...

    Jeong-Hwan Kim, Haruki Eguchi, Masanari Umemura, Itaru Sato in NPG Asia Materials (2017)

  19. Article

    Open Access

    Choroidal fissure acts as an overflow device in cerebrospinal fluid drainage: morphological comparison between idiopathic and secondary normal-pressure hydrocephalus

    To clarify the pathogenesis of two different types of adult-onset normal-pressure hydrocephalus (NPH), we investigated cerebrospinal fluid distribution on the high-field three-dimensional MRI. The subarachnoid...

    Shigeki Yamada, Masatsune Ishikawa, Yasushi Iwamuro, Kazuo Yamamoto in Scientific Reports (2016)

  20. No Access

    Article

    An experimental feasibility study on applying SDN technology to disaster-resilient wide area networks

    The Internet may get catastrophic impacts when unexpected disasters such as earthquakes, tsunami, etc. happen. Therefore, it is necessary to equip resilient technologies for the Internet backbones in order to ...

    Kien Nguyen, Shigeki Yamada in Annals of Telecommunications (2016)

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