Dr. Ryan J. Halter Profile

Dr. Ryan J. Halter

at Thayer School of Engineering at Dartmouth

SPIE Involvement:

Conference Program Committee | Author

Publications (27)

Proceedings Article | 29 March 2024 Presentation + Paper

A surgical navigation framework for image-guided transoral robotic surgery

Yuan Shi, Michael Kokko, Joseph Paydarfar, Ryan Halter

Proceedings Volume 12928, 1292804 (2024) https://doi.org/10.1117/12.3008805

KEYWORDS: Optical tracking, Heads up displays, Computed tomography, Visualization

Read Abstract +

Proceedings Article | 29 March 2024 Poster + Paper

A robust system for capture and archival of high-definition stereoendoscopic video

Michael Kokko, Ryan Halter

Proceedings Volume 12928, 129282G (2024) https://doi.org/10.1117/12.3008790

KEYWORDS: Video, Video compression, Video processing, Digital video recorders, 3D video streaming, Robotic systems, Image processing, Image compression

Read Abstract +

Proceedings Article | 29 March 2024 Poster + Paper

Initial implementation of robot-integrated specimen imaging in transoral robotic surgery

Michael Kokko, Andrew Lee, Joseph Paydarfar, Ryan Halter

Proceedings Volume 12928, 129282J (2024) https://doi.org/10.1117/12.3008832

KEYWORDS: 3D modeling, Resection, Pathology, Robotic surgery, Surgery, Anatomy, Tumors, Point clouds, Visualization

Read Abstract +

Proceedings Article | 13 March 2024 Presentation + Paper

Onward to better surgery - the critical need for improved ex vivo testing and training methods

Eric Henderson, Ryan Halter, Keith Paulsen, Brian Pogue, Jonathan Elliott, Ethan LaRochelle, Alberto Ruiz, Shudong Jiang, Samuel Streeter, Kimberley Samkoe, Summer Gibbs

Proceedings Volume 12825, 1282506 (2024) https://doi.org/10.1117/12.3010121

KEYWORDS: Surgery, Tissues, Animals, Animal model studies, Tumor growth modeling, Perfusion imaging, Optical properties, In vivo imaging, Diseases and disorders, Cancer

Read Abstract +

Proceedings Article | 3 April 2023 Poster + Paper

Initial image-plane assessment of kinematic-based stereo overlay in trans-oral robotic surgery

Michael Kokko, Yuan Shi, Joseph Paydarfar, Ryan Halter

Proceedings Volume 12466, 124662I (2023) https://doi.org/10.1117/12.2655867

KEYWORDS: Kinematics, Endoscopes, Image segmentation, Optical tracking, Robotic surgery, Image registration, Video, Imaging systems, Calibration

Read Abstract +

Proceedings Article | 3 April 2023 Presentation + Paper

Evaluating a PSMNet-based pipeline for intraoperative stereo reconstruction with the da Vinci Xi

Michael Kokko, Lucas Andersen, Ryan Halter

Proceedings Volume 12466, 124660A (2023) https://doi.org/10.1117/12.2655125

KEYWORDS: Point clouds, Kinematics, Image restoration, Image processing, Tissues, Natural surfaces, Medical image reconstruction, Video, Kidney, Data modeling

Read Abstract +

Proceedings Article | 4 April 2022 Presentation + Paper

A novel abdominal phantom model for laparoscopic and robotic exposure of retroperitoneal structures

Michael Kokko, John Seigne, Douglas Van Citters, Ryan Halter

Proceedings Volume 12034, 1203416 (2022) https://doi.org/10.1117/12.2613488

KEYWORDS: Kidney, Tissues, Spine, Barium, Silicon, Robotics, Tumors, Surgery, Laparoscopy, Computed tomography

Read Abstract +

Proceedings Article | 4 April 2022 Presentation + Paper

Surgical navigation system for image-guided transoral robotic surgery: a proof of concept

Yuan Shi, Yajie Lou, Iroha Shirai, Xiaotian Wu, Joseph Paydarfar, Ryan Halter

Proceedings Volume 12034, 1203409 (2022) https://doi.org/10.1117/12.2613486

KEYWORDS: Head, Surgery, 3D modeling, Navigation systems, Computed tomography, Sensors, Robotic surgery, Cancer, Image-guided intervention

Read Abstract +

Proceedings Article | 5 March 2021 Paper

A portable polyanatomic optico-impedance system for early warning of systemic disease: evaluation in occult hemorrhage

Jonathan Elliott, J. Scott Sottosanti, Ethan Murphy, Samuel Klein, Vikrant Vaze, Ryan Halter, Norman Paradis

Proceedings Volume 11651, 116510N (2021) https://doi.org/10.1117/12.2583327

KEYWORDS: Spectroscopy, Pathophysiology, Near infrared spectroscopy, Machine learning, Light emitting diodes, Human subjects, Diagnostics, Blood, Abdomen

Read Abstract +

Proceedings Article | 15 February 2021 Presentation + Paper

Imaging-compatible oral retractor system for use in image-guided transoral robotic surgery

Yuan Shi, Xiaotian Wu, Joseph Paydarfar, Ryan Halter

Proceedings Volume 11598, 1159807 (2021) https://doi.org/10.1117/12.2582233

KEYWORDS: Robotic surgery, Polymers, Magnetic resonance imaging, Imaging systems, Computed tomography, Tumors, Robotics, Navigation systems, Metals, Haptic technology

Read Abstract +

Proceedings Article | 15 February 2021 Presentation + Paper

Multi-body statistical shape representation of anatomy for navigation in robot-assisted laparoscopic partial nephrectomy

Michael Kokko, John Seigne, Douglas Van Citters, Ryan Halter

Proceedings Volume 11598, 1159808 (2021) https://doi.org/10.1117/12.2582320

KEYWORDS: Laparoscopy, Statistical modeling, Composites, Tomography, Tissues, Natural surfaces, Kidney, Aorta

Read Abstract +

Proceedings Article | 16 March 2020 Presentation + Paper

Estimating tongue deformation during laryngoscopy using hybrid FEM-multibody model and intraoperative tracking: a cadaver pilot study

Xiaotian Wu, C. Antonio Sánchez, John Lloyd, Heather Borgard, Sidney Fels, Joseph Paydarfar, Ryan Halter

Proceedings Volume 11315, 113151E (2020) https://doi.org/10.1117/12.2550471

KEYWORDS: Modeling and simulation, Tongue, Skull, Tumors, Surgery, Head, Data modeling, Image segmentation, Computed tomography, Tissues, Solid modeling

Read Abstract +

Proceedings Article | 16 March 2020 Presentation + Paper

Modeling the surgical exposure of anatomy in robot-assisted laparoscopic partial nephrectomy

Michael Kokko, John Seigne, Douglas Van Citters, Ryan Halter

Proceedings Volume 11315, 113151H (2020) https://doi.org/10.1117/12.2550605

KEYWORDS: Kidney, Endoscopes, Laparoscopy, Surgery, Cameras, Computer simulations, Computed tomography, Optical tracking, Data modeling

Read Abstract +

Proceedings Article | 16 March 2020 Paper

Development of a novel tumor phantom model for head and neck squamous cell carcinoma and its applications

Michael Sramek, Yuan Shi, Erick Quintanilla, Xiaotian Wu, Aravind Ponukumati, David Pastel, Ryan Halter, Joseph Paydarfar

Proceedings Volume 11315, 113152X (2020) https://doi.org/10.1117/12.2550597

KEYWORDS: Tumors, Tongue, Head, Neck, Surgery, 3D modeling, Visualization

Read Abstract +

Proceedings Article | 15 March 2019 Presentation + Paper

Electrical impedance mapping for localizing evolving traumatic brain injury

Alicia Everitt, Brandon Root, David Bauer, Ryan Halter

Proceedings Volume 10953, 109530W (2019) https://doi.org/10.1117/12.2512292

KEYWORDS: Electrodes, Traumatic brain injury, Injuries, Animal model studies, Blood, Brain mapping, Computed tomography, Tissues, Data acquisition, Instrument modeling

Read Abstract +

Proceedings Article | 15 March 2019 Paper

Study of separation between ex vivo malignant and benign prostatic tissue using magnetic resonance electrical property tomography

Ethan Murphy, Elias Hyams, Alan Schned, Jason Pettus, Ryan Halter

Proceedings Volume 10953, 109532C (2019) https://doi.org/10.1117/12.2512897

KEYWORDS: Tissues, Prostate, Magnetic resonance imaging, Cancer, Pathology, Tumors, Magnetism, Tomography, Calibration, Prostate cancer

Read Abstract +

Proceedings Article | 8 March 2019 Paper

Toward a framework for navigational guidance during surgical access

Michael Kokko, John Seigne, Douglas Van Citters, Ryan Halter

Proceedings Volume 10951, 1095135 (2019) https://doi.org/10.1117/12.2513040

KEYWORDS: Surgery, Process modeling, Filtering (signal processing), Particle filters, Particles, Robotics, Tissues, Laparoscopy, Error analysis, Tumors

Read Abstract +

Proceedings Article | 13 March 2018 Presentation + Paper

Intraoperative deformation during laryngoscopy of irradiated and non-irradiated patients

Xiaotian Wu, Joseph Paydarfar, Ryan Halter

Proceedings Volume 10576, 105761I (2018) https://doi.org/10.1117/12.2293769

KEYWORDS: Tongue, Tissues, Surgery, Image segmentation, Computed tomography, Skull, Data modeling, Visualization, Bone, Imaging systems

Read Abstract +

Proceedings Article | 12 March 2018 Paper

A real-time 4-bit imaging electrical impedance sensing biopsy needle for prostate cancer detection

Alicia Everitt, Preston Manwaring, Ryan Halter

Proceedings Volume 10578, 105781A (2018) https://doi.org/10.1117/12.2293799

KEYWORDS: Biopsy, Electrodes, Prostate cancer, Tissues, Cancer, Prostate, Biosensing, Diagnostics, Binary data, Real time imaging

Read Abstract +

Proceedings Article | 12 March 2018 Paper

Automated segmentation and feature extraction in cardiac electrical impedance tomography images

Saaid Arshad, Ethan Murphy, Ryan Halter

Proceedings Volume 10578, 105781Q (2018) https://doi.org/10.1117/12.2293917

KEYWORDS: Image segmentation, Heart, Feature extraction, Data modeling, Tomography, Reconstruction algorithms, Chest, Picture Archiving and Communication System, Electrodes, Finite element methods

Read Abstract +

Proceedings Article | 29 March 2016 Paper

Respiratory-gated electrical impedance tomography: a potential technique for quantifying stroke volume

Saaid Arshad, Ethan Murphy, Ryan Halter

Proceedings Volume 9788, 97882D (2016) https://doi.org/10.1117/12.2216595

KEYWORDS: Tomography, Heart, Cardiac imaging, Chest, Data modeling, Electrodes, 3D modeling, Finite element methods, Reconstruction algorithms

Read Abstract +

Proceedings Article | 20 March 2015 Paper

Towards intraoperative surgical margin assessment and visualization using bioimpedance properties of the tissue

Shadab Khan, Aditya Mahara, Elias Hyams, Alan Schned, Ryan Halter

Proceedings Volume 9414, 94141C (2015) https://doi.org/10.1117/12.2082920

KEYWORDS: Tissues, Prostate, Electrodes, Visualization, Surgery, Principal component analysis, Tumors, Data acquisition, Prostate cancer, Composites

Read Abstract +

Proceedings Article | 18 March 2015 Paper

Electrical impedance map (EIM) for margin assessment during robot-assisted laparoscopic prostatectomy (RALP) using a microendoscopic probe

Aditya Mahara, Shadab Khan, Alan Schned, Elias Hyams, Ryan Halter

Proceedings Volume 9415, 94150D (2015) https://doi.org/10.1117/12.2082968

KEYWORDS: Prostate, Cancer, Tissues, Surgery, Neodymium, Laparoscopy, Electrodes, Prostate cancer, Field emission displays, Surface conduction electron emitter displays

Read Abstract +

Proceedings Article | 18 March 2015 Paper

A multimodal imaging framework for enhanced robot-assisted partial nephrectomy guidance

Ryan Halter, Xiaotian Wu, Alex Hartov, John Seigne, Shadab Khan

Proceedings Volume 9415, 94151E (2015) https://doi.org/10.1117/12.2082775

KEYWORDS: Kidney, Magnetic resonance imaging, Tumors, Surgery, Computed tomography, Image registration, 3D image processing, Cameras, Laparoscopy, Calibration

Read Abstract +

Proceedings Article | 23 February 2011 Paper

Electrical property-based biopsy for prostate cancer detection and assessment

Ryan Halter, Vaishali Mishra, Hamza Bouayad, Preston Manwaring, John Heaney, Alan Schned

Proceedings Volume 7901, 79010U (2011) https://doi.org/10.1117/12.876489

KEYWORDS: Biopsy, Electrodes, Tissues, Prostate, Electroluminescence, Prostate cancer, Finite element methods, Computer simulations, Cancer, Remote sensing

Read Abstract +

Proceedings Article | 3 August 2001 Paper

Transient thermal deformation of alumina (A12O3) substrate during laser drilling

Ryan Halter, Subash Jayaraman, Bernhard Tittmann

Proceedings Volume 4336, (2001) https://doi.org/10.1117/12.435566

KEYWORDS: Laser drilling, Ceramics, Laser processing, Fringe analysis, Speckle pattern, Speckle, Microscopes, Interferometers, Temporal resolution, Image processing

Read Abstract +

Proceedings Article | 3 August 2001 Paper

Flank crack detection in locomotive wheels with NDE techniques

Marie Laczynski, Subash Jayaraman, Ryan Halter, Bernhard Tittmann

Proceedings Volume 4336, (2001) https://doi.org/10.1117/12.435564

KEYWORDS: Magnetism, Particles, Wave propagation, Nondestructive evaluation, Acoustics, Ultrasonics, Inspection, Optical inspection, Interfaces, Transducers

Read Abstract +