Search results for: Tomohiro Ando

Items from 1 to 20 out of 58 results

article

7‐1: Developing new Ferroelectric Liquid Crystal for LCOS

Tomohiro Ando, Yuta Kanamori, Manabu Nakamura, Michelle Livingston, more

SID Symposium Digest of Technical Papers > 55 > 1 > 45 - 48

Ferroelectric liquid crystals (FLCs) have two attractive characteristics: very fast switching speeds and stable alignment against electrical fringe fields from neighboring pixels. However, care needs to be taken because FLC panels can be prone to alignment defects caused by Chevron structures. At this time, we have succeeded in developing a new FLC which has an improved temperature range, with a wider SmC phase, and which is more stable, thus making it less likely to have alignment defects. We look forward to demonstrating this to you with LCOS panels containing this new FLC.

article

CT and MR imaging findings of non-neoplastic cystic lesions of the parotid gland

Hiroki Kato, Masaya Kawaguchi, Tomohiro Ando, Mitsuhiro Aoki, more

Japanese Journal of Radiology > 2019 > 37 > 9 > 627-635

A variety of neoplastic and non-neoplastic lesions of the parotid gland can present with a predominantly cystic architecture, and although radiologists frequently encounter cystic parotid tumors, other non-neoplastic lesions should also be included in the differential diagnoses of cystic parotid lesions. Non-neoplastic cystic lesions are usually classified as either congenital/acquired cystic lesions...

article

Pleomorphic adenoma of salivary glands: common and uncommon CT and MR imaging features

Hiroki Kato, Masaya Kawaguchi, Tomohiro Ando, Keisuke Mizuta, more

Japanese Journal of Radiology > 2018 > 36 > 8 > 463-471

Pleomorphic adenoma (PA) is the most common salivary gland tumor and is characterized by cytomorphological and architectural diversity. On CT and MR images, PAs are shown as well-defined lesions occasionally accompanied by characteristic lobulated contours. On T2-weighted images, typical PAs show marked hyperintensity, which reflects the abundant myxochondroid stroma, with a hypointense rim indicating...

article

MR findings of the orbit in patients with Vogt–Koyanagi–Harada disease

Tomohiro Ando, Hiroki Kato, Kiyofumi Mochizuki, Kenji Ozawa, more

Neuroradiology > 2018 > 60 > 4 > 421-426

Purpose We aimed to evaluate the MR findings of the orbit in patients with Vogt–Koyanagi–Harada disease (VKHD). Methods We included 14 patients with clinically diagnosed VKHD, who underwent orbital MR imaging before treatment between May 2011 and August 2017. The mean duration from initial symptom onset to MR imaging was 16 days (range, 2–36 days). Fat-suppressed gadolinium-enhanced T1-weighted...

article

Widespread deformation of the tongue in a neurofibromatosis type 1 patient: A case report

Gen Udagawa, Takuya Naganawa, Akira Kumasaka, Yasuhiro Fujimoto, more

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology > 2017 > 29 > 6 > 555-558

Neurofibromatosis type 1 (NF1) is an inherited, autosomal-dominant disorder, also known as von Recklinghausen’s disease. This pathology was first described from a series of patients displaying a combination of nervous system tumors and findings such as café-au-lait spots, eye lesions, and bone lesions. Oral mucosal tumors are common in association with NF1, but are relatively rare on the lateral border...

article

Cytological character of mini pig mesenchymal stromal cells from various tissues and the attempt of cell sheet formation

Nobuyuki Kaibuchi, Takanori Iwata, Satoru Onizuka, Kosei Yano, more

Regenerative Therapy > 2017 > 6 > Complete > 83-89

Large animal experiments are important for translational research in regenerative medicine. Recently, mini pigs have been used in large animal studies and surgical training. The use of multipotent mesenchymal stromal cell (MSC) sheets for the treatment of many diseases is increasing. The purpose of the present study was to establish optimal methods for generating mini pig MSC sheets from various tissues...

article

Water purification using porous ceramics prepared by recycling volcanic ash and waste glass

Tomohiro Ando, Yuki Fujita, Mayu Kakinaga, Nobuto Oka, more

Applied Water Science > 2017 > 7 > 7 > 4109-4115

Water purification was examined using porous ceramics prepared by sintering a powder mixture of volcanic ash, waste glass and a small amount of wood charcoal. The porous ceramics had cross-linked 3D-channels of which the diameter ranged from several nm to several μm. Three kilograms of porous ceramics placed in 90 L of circulating artificial seawater, in which several tropical fishes were actually...

article

Comparison between MR imaging findings of intracranial and extracranial schwannomas

Tomohiro Ando, Hiroki Kato, Masayuki Matsuo

Clinical Imaging > 2017 > 42 > C > 218-223

To evaluate the differences of MR imaging findings between intracranial and extracranial schwannomas.We retrospectively reviewed the MR images of 98 schwannomas and compared the imaging findings between intracranial and extracranial schwannomas.The number of intratumoral cysts was greater in intracranial than in extracranial schwannomas (4.8±7.2 vs 1.8±4.1; p<0.05).The number of intratumoral cysts...

article

Transcatheter Arterial Embolization for Primary Postpartum Hemorrhage: Predictive Factors of Need for Embolic Material Conversion of Gelatin Sponge Particles to N-Butyl Cyanoacrylate

Yukichi Tanahashi, Satoshi Goshima, Hiroshi Kondo, Tomohiro Ando, more

CardioVascular and Interventional Radiology > 2017 > 40 > 2 > 236-244

Purpose To identify predictive factors for embolic material conversion to N-butyl cyanoacrylate (NBCA) for the treatment of primary postpartum hemorrhage (PPH) after failed transcatheter arterial embolization (TAE) using gelatin sponge (GS). Materials and Methods Institutional review board approval was obtained. We retrospectively studied 62 consecutive women with primary PPH who underwent TAE between...

article

Regulation of the NLRP3 inflammasome in Porphyromonas gingivalis-accelerated periodontal disease

Yohei Yamaguchi, Tomoko Kurita-Ochiai, Ryoki Kobayashi, Toshihiko Suzuki, more

Inflammation Research > 2017 > 66 > 1 > 59-65

Objective Porphyromonas gingivalis is involved in the pathogenesis of chronic inflammatory periodontal disease. Recent studies have suggested that the NLRP3 inflammasome plays an important role in the development of chronic inflammation. We investigated a possible association between the inflammasome in gingival inflammation and bone loss induced by P. gingivalis infection using NLRP3-deficient mice...

article

Multipotent mesenchymal stromal cell sheet therapy for bisphosphonate-related osteonecrosis of the jaw in a rat model

Nobuyuki Kaibuchi, Takanori Iwata, Masayuki Yamato, Teruo Okano, more

Acta Biomaterialia > 2016 > 42 > C > 400-410

Bisphosphonates (BPs) inhibit bone resorption and are frequently used to treat osteoporosis, bone metastasis, and other conditions that result in bone fragility. However, numerous studies have reported that BPs are closely related to the development of osteonecrosis of the jaw (BRONJ), which is an intractable disease. Recent studies have demonstrated that intravenous infusion of multipotent mesenchymal...

article

Recommendation to include dentists/oral surgeons in child abuse prevention teams of general hospitals in Japan

Takuya Naganawa, Abhishek Kumar, Tomohiro Ando

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology > 2016 > 28 > 3 > 263

chapter

Functional Data Analysis of the Dynamics of Gene Regulatory Networks

Tomohiro Ando, Seiya Imoto, Satoru Miyano

Lecture Notes in Computer Science > Knowledge Exploration in Life Science Informatics > 69-83

A new method for constructing gene networks from microarray time-series gene expression data is proposed in the context of Bayesian network approach. An essential point of Bayesian network modeling is the construction of the conditional distribution of each random variable. When estimating the conditional distributions from gene expression data, a common problem is that gene expression data contain...

article

Effect of motivational interviewing on medication non-adherence for patients with chronic intraoral pain

Takuya Naganawa, Eiko Naganawa, Abhishek Kumar, Hitoshi Sato, more

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology > 2016 > 28 > 2 > 165-169

Motivational interviewing (MI) is a technique for helping clients to recognize and address their problems. This approach is useful for clients who are reluctant to change or who are ambivalent about changing their behaviors. We describe a case of medication non-adherence in a patient with chronic intraoral neuropathic pain. A 54-year-old man visited the Tokyo Women's Medical University Hospital with...

article

Panel Data Models with Grouped Factor Structure Under Unknown Group Membership

Tomohiro Ando, Jushan Bai

Journal of Applied Econometrics > 31 > 1 > 163 - 191

This paper studies panel data models with unobserved group factor structures. The group membership of each unit and the number of groups are left unspecified. We estimate the model by minimizing the sum of least squared errors with a shrinkage penalty. The number of explanatory variables can be large. The regressions coefficients can be homogeneous or group specific. The consistency and asymptotic...

article

Characteristics of patients with benign partial epilepsy in infancy without PRRT2 mutations

Noriko Sangu, Keiko Shimojima, Okumura Akihisa, Tomohiro Ando, more

Epilepsy Research > 2015 > 118 > C > 10-13

Mutations in the proline-rich transmembrane protein 2 gene (PRRT2) are known to cause clinical symptoms of paroxysmal kinesigenic dyskinesia (PKD), benign partial epilepsy in infancy (BPEI), and infantile convulsions with choreoathetosis (ICCA) syndrome; however, not all patients with BPEI have PRRT2 mutations, and the genetic backgrounds for such patients are still unknown. To characterize BPEI patients...

article

Intracranial hemorrhage after tooth extraction in a patient with chronic disseminated intravascular coagulation

Takuya Naganawa, Kosuke Sakuma, Abhishek Kumar, Satoshi Fukuzawa, more

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology > 2015 > 27 > 6 > 854-857

Disseminated intravascular coagulation (DIC) is a condition causing severe bleeding, which requires hemostatic measures be taken after surgical treatment. However, there is no clear method to assess coagulation and bleeding after surgical treatment. Here, we describe a rare case of intracranial hemorrhage after tooth extraction in a patient with chronic DIC associated with aortic dissection. A 76-year-old...

article

A simple new test for slope homogeneity in panel data models with interactive effects

Tomohiro Ando, Jushan Bai

Economics Letters > 2015 > 136 > C > 112-117

We consider the problem of testing for slope homogeneity in high-dimensional panel data models with a factor error structure. We consider the Swamy-type test for slope homogeneity by incorporating interactive fixed effects. We show that the proposed test statistic is asymptotically normal. Our test allows the explanatory variables to be correlated with the unobserved factors, factor loadings, or with...

article

Merchant selection and pricing strategy for a platform firm in the online group buying market

Tomohiro Ando

Annals of Operations Research > 2018 > 263 > 1-2 > 209-230

The online group-buying market is characterized by intense competition between brokers, called platform firms, which function as intermediaries between merchants and consumers. In an environment of intense competition, merchant selection and pricing strategies are critical for platform firms. This paper employs business analytics to support strategy formulation for these firms by forecasting market...

article

Cell Sheets for Periodontal Tissue Engineering

Takanori Iwata, Masayuki Yamato, Kaoru Washio, Tomohiro Ando, more

Current Oral Health Reports > 2015 > 2 > 4 > 252-256

Cell Sheet Technology was first utilized in a clinical trial for corneal reconstruction in 2003; since then, several clinical trials have been performed not only in Japan but also in Europe. The key technology of Cell Sheet is a temperature-responsive polymer (poly N-isopropylacrylamide), which characteristics dramatically change from hydrophobic to hydrophilic by changing the temperature. This intelligent...

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INFONA - science communication portal

Search results for: Tomohiro Ando

7‐1: Developing new Ferroelectric Liquid Crystal for LCOS

CT and MR imaging findings of non-neoplastic cystic lesions of the parotid gland

Pleomorphic adenoma of salivary glands: common and uncommon CT and MR imaging features

MR findings of the orbit in patients with Vogt–Koyanagi–Harada disease

Widespread deformation of the tongue in a neurofibromatosis type 1 patient: A case report

Cytological character of mini pig mesenchymal stromal cells from various tissues and the attempt of cell sheet formation

Water purification using porous ceramics prepared by recycling volcanic ash and waste glass

Comparison between MR imaging findings of intracranial and extracranial schwannomas

Transcatheter Arterial Embolization for Primary Postpartum Hemorrhage: Predictive Factors of Need for Embolic Material Conversion of Gelatin Sponge Particles to N-Butyl Cyanoacrylate

Regulation of the NLRP3 inflammasome in Porphyromonas gingivalis-accelerated periodontal disease

Multipotent mesenchymal stromal cell sheet therapy for bisphosphonate-related osteonecrosis of the jaw in a rat model

Recommendation to include dentists/oral surgeons in child abuse prevention teams of general hospitals in Japan

Functional Data Analysis of the Dynamics of Gene Regulatory Networks

Effect of motivational interviewing on medication non-adherence for patients with chronic intraoral pain

Panel Data Models with Grouped Factor Structure Under Unknown Group Membership

Characteristics of patients with benign partial epilepsy in infancy without PRRT2 mutations

Intracranial hemorrhage after tooth extraction in a patient with chronic disseminated intravascular coagulation

A simple new test for slope homogeneity in panel data models with interactive effects

Merchant selection and pricing strategy for a platform firm in the online group buying market

Cell Sheets for Periodontal Tissue Engineering

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