scholarly journals Usefulness of real-time 3D reconstruction CT-gastrography guided PEG for stroke patients with VP shunts

Nosotchu ◽  
2019 ◽  
Vol 41 (3) ◽  
pp. 203-204
Author(s):  
Kazuhiro Tomiyasu ◽  
Takeo Oshima ◽  
Masami Yoshii ◽  
Hiromi Suzuki ◽  
Joji Inamasu ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Real Time ◽  
Stroke Patients ◽  
Ct Gastrography

scholarly journals Real-time 3D reconstruction of non-rigid shapes with a single moving camera

2016 ◽  
Vol 153 ◽  
pp. 37-54 ◽  
Author(s):  
Antonio Agudo ◽  
Francesc Moreno-Noguer ◽  
Begoña Calvo ◽  
J.M.M. Montiel
Keyword(s):  
3D Reconstruction ◽  
Real Time ◽  
Moving Camera

Abstract WP239: Real Time Prospective Measurement of aPTT Predicts Paradoxical Embolism in Cryptogenic Stroke

Stroke ◽  
2017 ◽  
Vol 48 (suppl_1) ◽  
Author(s):  
Bo Song ◽  
Wenjun Deng ◽  
Lindsay Fisher ◽  
I-ying Chou ◽  
Max Oyer ◽  
...  
Keyword(s):  
Real Time ◽  
Protein C ◽  
Cryptogenic Stroke ◽  
Protein S ◽  
Paradoxical Embolism ◽  
Proof Of Concept ◽  
Stroke Patients ◽  
Neurologic Diseases ◽  
Coagulation Testing ◽  
Coagulation Status

Patent foramen ovale (PFO) is an important underlying source of cryptogenic stroke (CS) associated with hematologic procoagulability. However, the association of genetically identified hyperocagulability and paradoxical embolism has been difficult to establish due to retrospective analysis and the limited numbers of of known genetically identified hypercoagulable conditions. In this study, we explored the utility of conventional coagulation status in PFO related stroke, as the patients may harbor genetically unidentified hyperocoagulable conditions. Method: Eligible pts were prospectively recruited in accordance with IRB, and underwent conventional coagulation testing (PT/PTT) testing within 12 hours of stroke. All patients underwent full cryptogenic workup such as MRI/MRA, mobile cardiac outpatient telemetry (>30 days), cardiac echo, and hypercoagulable testing. Results: We screened 4,831 pts admitted with acute neurologic diseases, and recruited 358 eligible acute ischemic stroke pts. 54 (15.1%) pts had CS and 32 pts had PFO related stroke. While there is no difference between PFO-related CS and PFO-unrelated CS on full hypercaogulable screen (protein S, protein C, FVL, PTGM, ATIII, APLAb, LA, hcy), aPTT was statistically significantly shortened in PFO-related stroke patients (PFO CS vs. non-PFO CS: aPTT 27.2±4.1s vs. 29.9±2.3s). ROC curve indicates early shortened aPTT can predict PFO related stroke (sensitivity 70%, specificity 81.5%, p=0.017) (see Figure). Conclusion: We found real time aPTT to be significantly shortened in patients eventually diagnosed with paradoxical embolism related to PFO. While studies in larger pt cohorts accounting for other potential confounders are underway, this proof-of-concept study demonstrates the importance and utility of early conventional coagulation testing in identifying paradoxical embolism. Pts with shortened aPTT may need additional workup for other underlying hypercoagulable conditions.

scholarly journals A Smartphone Interface for a Wireless EEG Headset with Real-Time 3D Reconstruction

2011 ◽  
pp. 317-318 ◽  
Author(s):  
Arkadiusz Stopczynski ◽  
Jakob Eg Larsen ◽  
Carsten Stahlhut ◽  
Michael Kai Petersen ◽  
Lars Kai Hansen
Keyword(s):  
3D Reconstruction ◽  
Real Time ◽  
Wireless Eeg

Abstract 103: A Phase I Current Escalation Study for Transcranial Direct Current Stimulation in Ischemic Stroke Patients

Stroke ◽  
2017 ◽  
Vol 48 (suppl_1) ◽  
Author(s):  
Pratik Y Chhatbar ◽  
Rong Chen ◽  
William DeVries ◽  
Ha M Lee ◽  
Mark S George ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Skin Temperature ◽  
Real Time ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Stopping Rules ◽  
Stroke Patients ◽  
Abrupt Decrease ◽  
Direct Current Stimulation ◽  
Body Resistance

Introduction: Positive dose-response relationship with the use of Transcranial direct current stimulation (tDCS) in post-stroke upper limb motor recovery demands investigating the efficacy of higher tDCS doses. Safety and tolerability of tDCS current higher than typically used 2 mA has not been investigated in stroke patients. Hypothesis: tDCS application up to 4 mA for 30 minutes is safe and tolerable in stroke patients Methods: A 3+3 study design with current escalation schedule of 1, 2, 2.5, 3, 3.5 and 4 mA was adopted for this tDCS safety study ( Fig. A ). Patients with first-ever ischemic stroke and unilateral hemiparesis were recruited. Single session of tDCS and customatory occupational therapy for 30 minutes using a device (Chattanooga Ionto) with 5х7 cm 2 sponge electrodes (Soterix Medical) on a bihemispheric montage (C3/C4, anode on lesional side) were administered. Stopping rules were (1) second degree scalp burn, or (2) seizure, or (3) new lesion(s) on DWI sequence of MRI or decreased ADC. Tolerability was assessed by tDCS questionnaire administered before and after tDCS. Body resistance and skin temperature at electrode contact site were monitored in real time. Results: Eighteen patients were enrolled and completed the study. The current was escalated to 4 mA without any major safety concerns (stopping rule). 50% of patients revealed transient skin redness at anodal site and 17% at cathodal side. No patient had any persistent skin perception issues at the end of tDCS ( Fig. B ). We also present real-time monitoring of body resistance and skin temperature to ensure safety during tDCS administration ( Fig. C ). Skin barrier remained intact through tDCS, as demonstrated by absence of abrupt decrease in body resistance (<400 Ω). Skin temperatures remained well below body temperature (range 26°C-35°C) Conclusion: Our data support that tDCS current up to 4 mA is safe and tolerable in ischemic stroke patients. Efficacy and safety should be further tested in a phase II study.

A Robust and Real-Time Full 3D Reconstruction Method Based on Multiple Kinect

2018 ◽  
pp. 1420-1428
Author(s):  
Xiongfeng Peng ◽  
Liaoyuan Zeng ◽  
Wenyi Wang ◽  
Zhili Liu ◽  
Yifeng Yang ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Real Time ◽  
Reconstruction Method

scholarly journals Real-Time 3D Reconstruction of Thin Surface Based on Laser Line Scanner

Sensors ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 534 ◽  
Author(s):  
Yuan He ◽  
Shunyi Zheng ◽  
Fengbo Zhu ◽  
Xia Huang
Keyword(s):  
3D Reconstruction ◽  
Real Time ◽  
Laser Line ◽  
Frame Rate ◽  
Processing Unit ◽  
Memory Usage ◽  
Central Processing ◽  
Time Performance ◽  
Topological Errors ◽  
Line Scanner

The truncated signed distance field (TSDF) has been applied as a fast, accurate, and flexible geometric fusion method in 3D reconstruction of industrial products based on a hand-held laser line scanner. However, this method has some problems for the surface reconstruction of thin products. The surface mesh will collapse to the interior of the model, resulting in some topological errors, such as overlap, intersections, or gaps. Meanwhile, the existing TSDF method ensures real-time performance through significant graphics processing unit (GPU) memory usage, which limits the scale of reconstruction scene. In this work, we propose three improvements to the existing TSDF methods, including: (i) a thin surface attribution judgment method in real-time processing that solves the problem of interference between the opposite sides of the thin surface; we distinguish measurements originating from different parts of a thin surface by the angle between the surface normal and the observation line of sight; (ii) a post-processing method to automatically detect and repair the topological errors in some areas where misjudgment of thin-surface attribution may occur; (iii) a framework that integrates the central processing unit (CPU) and GPU resources to implement our 3D reconstruction approach, which ensures real-time performance and reduces GPU memory usage. The proposed results show that this method can provide more accurate 3D reconstruction of a thin surface, which is similar to the state-of-the-art laser line scanners with 0.02 mm accuracy. In terms of performance, the algorithm can guarantee a frame rate of more than 60 frames per second (FPS) with the GPU memory footprint under 500 MB. In total, the proposed method can achieve a real-time and high-precision 3D reconstruction of a thin surface.

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