Search Results for author: David B. Camarillo

Found 13 papers, 0 papers with code

Data-driven decomposition of brain dynamics with principal component analysis in different types of head impacts

no code implementations27 Oct 2021 Xianghao Zhan, Yuzhe Liu, Nicholas J. Cecchi, Olivier Gevaert, Michael M. Zeineh, Gerald A. Grant, David B. Camarillo

The brain dynamics decomposition enables better interpretation of the patterns in brain injury metrics and the sensitivity of brain injury metrics across impact types.

Rapidly and accurately estimating brain strain and strain rate across head impact types with transfer learning and data fusion

no code implementations31 Aug 2021 Xianghao Zhan, Yuzhe Liu, Nicholas J. Cecchi, Olivier Gevaert, Michael M. Zeineh, Gerald A. Grant, David B. Camarillo

To address the computational cost of FEM, the limited strain rate prediction, and the generalizability of MLHMs to on-field datasets, we propose data fusion and transfer learning to develop a series of MLHMs to predict the maximum principal strain (MPS) and maximum principal strain rate (MPSR).

Transfer Learning

Kinematics clustering enables head impact subtyping for better traumatic brain injury prediction

no code implementations7 Aug 2021 Xianghao Zhan, Yiheng Li, Yuzhe Liu, Nicholas J. Cecchi, Olivier Gevaert, Michael M. Zeineh, Gerald A. Grant, David B. Camarillo

However, due to different kinematic characteristics, many brain injury risk estimation models are not generalizable across the variety of impacts that humans may sustain.

Car Racing Clustering +2

Applying physics-based loss functions to neural networks for improved generalizability in mechanics problems

no code implementations30 Apr 2021 Samuel J. Raymond, David B. Camarillo

Physics-Informed Machine Learning (PIML) has gained momentum in the last 5 years with scientists and researchers aiming to utilize the benefits afforded by advances in machine learning, particularly in deep learning.

BIG-bench Machine Learning Physics-informed machine learning

Predictive Factors of Kinematics in Traumatic Brain Injury from Head Impacts Based on Statistical Interpretation

no code implementations9 Feb 2021 Xianghao Zhan, Yiheng Li, Yuzhe Liu, August G. Domel, Hossein Vahid Alizadeh, Zhou Zhou, Nicholas J. Cecchi, Samuel J. Raymond, Stephen Tiernan, Jesse Ruan, Saeed Barbat, Olivier Gevaert, Michael M. Zeineh, Gerald A. Grant, David B. Camarillo

To better design brain injury criteria, the predictive power of rotational kinematics factors, which are different in 1) the derivative order (angular velocity, angular acceleration, angular jerk), 2) the direction and 3) the power (e. g., square-rooted, squared, cubic) of the angular velocity, were analyzed based on different datasets including laboratory impacts, American football, mixed martial arts (MMA), NHTSA automobile crashworthiness tests and NASCAR crash events.

Relationship between brain injury criteria and brain strain across different types of head impacts can be different

no code implementations18 Dec 2020 Xianghao Zhan, Yiheng Li, Yuzhe Liu, August G. Domel, Hossein Vahid Alizadeh, Samuel J. Raymond, Jesse Ruan, Saeed Barbat, Stephen Tiernan, Olivier Gevaert, Michael Zeineh, Gerald Grant, David B. Camarillo

The results show a significant difference in the relationship between BIC and brain strain across datasets, indicating the same BIC value may suggest different brain strain in different head impact types.

regression

Deep Learning Head Model for Real-time Estimation of Entire Brain Deformation in Concussion

no code implementations16 Oct 2020 Xianghao Zhan, Yuzhe Liu, Samuel J. Raymond, Hossein Vahid Alizadeh, August G. Domel, Olivier Gevaert, Michael Zeineh, Gerald Grant, David B. Camarillo

Results: The proposed deep learning head model can calculate the maximum principal strain for every element in the entire brain in less than 0. 001s (with an average root mean squared error of 0. 025, and with a standard deviation of 0. 002 over twenty repeats with random data partition and model initialization).

Feature Engineering

Autonomous Driving in the Lung using Deep Learning for Localization

no code implementations16 Jul 2019 Jake Sganga, David Eng, Chauncey Graetzel, David B. Camarillo

To improve intraoperative registration, we develop two deep learning approaches to localize the bronchoscope in the preoperative CT map based on the bronchoscopic video in real-time, called AirwayNet and BifurcationNet.

Autonomous Driving Navigate

Deep Learning for Localization in the Lung

no code implementations25 Mar 2019 Jake Sganga, David Eng, Chauncey Graetzel, David B. Camarillo

We developed two deep learning approaches to localize the bronchoscope in the preoperative CT map in real time and tested the algorithms across 13 trajectories in a lung phantom and 68 trajectories in 11 human cadaver lungs.

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