WorldCat Identities

Shiota, Takahiro

Works: 17 works in 68 publications in 2 languages and 879 library holdings
Genres: Case studies 
Roles: Editor, Author, Contributor
Publication Timeline
Most widely held works about Takahiro Shiota
Most widely held works by Takahiro Shiota
Filtering, segmentation, and depth by M Nitzberg( Book )

17 editions published in 1993 in English and Undetermined and held by 515 WorldCat member libraries worldwide

"Computer vision seeks a process that starts with a noisy, ambiguous signal from a TV camera and ends with a high-level description of discrete objects located in 3-dimensional space and identified in a human classification. This book addresses the process at several levels. First to be treated are the low-level image-processing issues of noise removaland smoothing while preserving important lines and singularities in an image. At a slightly higher level, a robust contour tracing algorithm is described that produces a cartoon of the important lines in the image. Thirdis the high-level task of reconstructing the geometry of objects in the scene. The book has two aims: to give the computer vision community a new approach to early visual processing, in the form of image segmentation that incorporates occlusion at a low level, and to introduce real computer algorithms that do a better job than what most vision programmers use currently. The algorithms are: - a nonlinear filter that reduces noise and enhances edges, - an edge detector that also finds corners and produces smoothed contours rather than bitmaps, - an algorithm for filling gaps in contours."--PUBLISHER'S WEBSITE
3D echocardiography by Takahiro Shiota( )

19 editions published between 2007 and 2014 in English and Undetermined and held by 179 WorldCat member libraries worldwide

This highly illustrated text on 3D echocardiography will provide the reader with a definitive viewpoint on the benefits of utilizing 3D echocardiography, a relatively new imaging tool in the clinical armamentarium. The contributing experts share the basic facts of 3D, as well as their personal experience in the field. This book reflects the latest technology in 3D echocardiographic imaging, this source is highly illustrated with top quality illustrations reflecting the advancement in diagnostic technology
Selected papers by David Mumford( Book )

10 editions published in 2010 in English and held by 74 WorldCat member libraries worldwide

Complex cases in echocardiography by Robert J Siegel( Book )

5 editions published between 2013 and 2015 in English and held by 35 WorldCat member libraries worldwide

This book features 75 cases demonstrating uncommon and puzzling echocardiogram findings. Each case begins with a brief clinical presentation, and related images, followed by multiple-choice questions. Detailed answers include patient outcomes and follow-up recommendations
Clinical 3D echocardiography : Comparison with 2D echocardiography : Case presentations by Takahiro Shiota( )

3 editions published in 2010 in English and held by 24 WorldCat member libraries worldwide

Three-dimensional echocardiography by Takahiro Shiota( )

1 edition published in 2007 in English and held by 22 WorldCat member libraries worldwide

Rinshō sanjigen shin'ekō : shōrei kara manabu nijigen shin'ekō tono hikaku by Takahiro Shiota( )

2 editions published in 2011 in Japanese and held by 19 WorldCat member libraries worldwide

Characterization of Jacobian varieties in terms of soliton equations by Takahiro Shiota( )

2 editions published in 1984 in English and held by 3 WorldCat member libraries worldwide

Nonlinear image smoothing with edge and corner enhancement by M Nitzberg( Book )

1 edition published in 1990 in English and held by 1 WorldCat member library worldwide

Association of postprocedural aortic regurgitation with mitral regurgitation worsened after transcatheter aortic valve replacement( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Abstract : Background: There is a paucity of investigation which demonstrates a predictor of mitral regurgitation (MR) worsened after aortic valve replacement (TAVR). Aim: The aim of this study was to identify the predictor of worsened MR after transcatheter TAVR. Methods: We retrospectively studied a total of 209 patients with mild or less MR at baseline who underwent TAVR for the treatment of severe aortic stenosis with the balloon‐expandable device. We found the presence of MR worsened after TAVR in 6% (12 patients) of all patients. Moderate or more postprocedural aortic regurgitation (AR) (odds ratio, 8.104; 95% confidence interval, 1.78–36.87; P =.007) was identified as a predictor of MR worsening after TAVR. In‐hospital outcomes indicated that patients within whom MR worsened suffered congestive heart failure more than those with unchanged or improved MR after TAVR ( P <.05). Conclusion: Significant postprocedural AR was associated with MR worsened from mild or less to moderate or more after TAVR. Worsened MR might affect in‐hospital congestive heart failure
Transballoon intravascular ultrasound imaging during balloon angioplasty in animal models with coarctation and branch pulmonary stenosis( )

1 edition published in 1997 in English and held by 1 WorldCat member library worldwide

BACKGROUND: Intravascular ultrasound (IVUS) studies performed after balloon dilation provide a method for evaluating the adequacy of angioplastyature of associated changes in vessel walls. Previously, IVUS studies required the use of separate scanning catheters inserted independently before and after balloonangioplasty. We tested a 0.035-in, 30-MHz IVUS transducer wire that images from within commercially available 5F balloon dilation catheters. METHODS AND RESULTS: Seven stenoses were created in the left pulmonary artery (n = 3) and in the aortic isthmus (n = 4) in six lambs (weight, 3.4 to 12.5 kg). The balloon catheter selected was advanced across the stenotic area and the IVUS wire advanced in the guide lumen to the center of the balloon. Continuous IVUS images were obtained through balloons before, during, and after dilation. Transballoon imaging confirmed balloon location within the stenotic segment. Luminal diameters of stenotic and adjacent vessel segments before and after angioplasty by IVUS showed good correlation with angiographicmeasurements (r = .93, P less th. or = .001). After successful dilation, imaging during deflation allowed the assessment of vascular elastic recoil, mural dissection, and luminal size without requiring changes in balloon position. Repeat dilation could be undertaken and the inflation pressure and technique modified on the basis of the observed results. CONCLUSIONS: This transballoon IVUS system provides important on-line information about lumen diameter and wall structure for evaluation of angioplasty without the need for catheter changes, providing a method to possibly reduce the likelihood of excessive wall damage and to potentially reduce the number of angiograms required to accomplish and confirm results
Subclinical leaflet thrombosis in surgical and transcatheter bioprosthetic aortic valves: an observational study( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Background: Subclinical leaflet thrombosis of bioprosthetic aortic valves after transcatheter valve replacement (TAVR) and surgical aortic valve replacement (SAVR) has been found with CT imaging. The objective of this study was to report the prevalence of subclinical leaflet thrombosis in surgical and transcatheter aortic valves and the effect of novel oral anticoagulants (NOACs) on the subclinical leaflet thrombosis and subsequent valve haemodynamics and clinical outcomes on the basis of two registries of patients who had CT imaging done after TAVR or SAVR. Methods: Patients enrolled between Dec 22, 2014, and Jan 18, 2017, in the RESOLVE registry, and between June 2, 2014, and Sept 28, 2016, in the SAVORY registry, had CT imaging done with a dedicated four-dimensional volume-rendered imaging protocol at varying intervals after TAVR and SAVR. We defined subclinical leaflet thrombosis as the presence of reduced leaflet motion, along with corresponding hypoattenuating lesions shown with CT. We collected data for baseline demographics, antithrombotic therapy, and clinical outcomes. We analysed all CT scans, echocardiograms, and neurological events in a masked fashion. Findings: Of the 931 patients who had CT imaging done (657 [71%] in the RESOLVE registry and 274 [29%] in the SAVORY registry), 890 [96%] had interpretable CT scans (626 [70%] in the RESOLVE registry and 264 [30%] in the SAVORY registry). 106 (12%) of 890 patients had subclinical leaflet thrombosis, including five (4%) of 138 with thrombosis of surgical valves versus 101 (13%) of 752 with thrombosis of transcatheter valves (p=0·001). The median time from aortic valve replacement to CT for the entire cohort was 83 days (IQR 33–281). Subclinical leaflet thrombosis was less frequent among patients receiving anticoagulants (eight [4%] of 224) than among those receiving dual antiplatelet therapy (31 [15%] of 208; p<0·0001); NOACs were equally as effective as warfarin (three [3%] of 107 vs five [4%] of 117; p=0·72). Subclinical leaflet thrombosis resolved in 36 (100%) of 36 patients (warfarin 24 [67%]; NOACs 12 [33%]) receiving anticoagulants, whereas it persisted in 20 (91%) of 22 patients not receiving anticoagulants (p<0·0001). A greater proportion of patients with subclinical leaflet thrombosis had aortic valve gradients of more than 20 mm Hg and increases in aortic valve gradients of more than 10 mm Hg (12 [14%] of 88) than did those with normal leaflet motion (seven [1%] of 632; p<0·0001). Although stroke rates were not different between those with (4·12 strokes per 100 person-years) or without (1·92 strokes per 100 person-years) reduced leaflet motion (p=0·10), subclinical leaflet thrombosis was associated with increased rates of transient ischaemic attacks (TIAs; 4·18 TIAs per 100 person-years vs 0·60 TIAs per 100 person-years; p=0·0005) and all strokes or TIAs (7·85 vs 2·36 per 100 person-years; p=0·001). Interpretation: Subclinical leaflet thrombosis occurred frequently in bioprosthetic aortic valves, more commonly in transcatheter than in surgical valves. Anticoagulation (both NOACs and warfarin), but not dual antiplatelet therapy, was effective in prevention or treatment of subclinical leaflet thrombosis. Subclinical leaflet thrombosis was associated with increased rates of TIAs and strokes or TIAs. Despite excellent outcomes after TAVR with the new-generation valves, prevention and treatment of subclinical leaflet thrombosis might offer a potential opportunity for further improvement in valve haemodynamics and clinical outcomes. Funding: RESOLVE (Cedars-Sinai Heart Institute) and SAVORY (Rigshospitalet)
Filtering, segmentation, and depth by M Nitzberg( Book )

1 edition published in 1993 in English and held by 1 WorldCat member library worldwide

Reemergent phase of antiferromagnetic order in iron-based superconductor LaFe(As1-xPx)O probed by 31P-NMR( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

Development of sandwich type laminated steel sheets by K Shirayama( Book )

1 edition published in 1986 in English and held by 0 WorldCat member libraries worldwide

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WorldCat IdentitiesRelated Identities
Filtering, segmentation, and depth
3D echocardiographySelected papers
Alternative Names
Shiota, T.

Shiota Takahiro

Shioto, T.

Shioto, T. (Takahiro)

Takahiro Shiota

Takahiro Shiota Japanese mathematician

Takahiro Shiota japanischer Mathematiker

Takahiro Shiota Japans wiskundige

Takahiro Shiota matemático japonés

Takahiro Shiota mathématicien japonais

シオタ, タカヒロ

塩田隆比呂 数学者