Mr. Kush Hari Profile

Kush Hari

at Vanderbilt Univ

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 3 April 2023 Poster + Paper

Development of a mixed reality application to simulate neurosurgical procedures

Kush Hari, Reid Thompson, Lola Chambless, Michael Miga

Proceedings Volume 12466, 124662B (2023) https://doi.org/10.1117/12.2655777

KEYWORDS: Head, Calibration, Mixed reality, Holograms, Image registration, 3D modeling, Surgery, Tumors, Brain, Prototyping

Read Abstract +

Conventional image guidance systems have become the standard for planning in neurosurgical procedures. While these systems have been shown to increase accuracy and precision for a variety of cases, there are still drawbacks. Such limitations revolve around the use of multiple physical components to separately display the information and the substantial amount of training time required for residents to become familiar with these systems. These disadvantages can increase the difficulty of the surgery unnecessarily, and thus affect quality. To address these concerns, a mixed reality application was developed on the Microsoft HoloLens as a surgical planning and teaching tool. Neurosurgeons could see head, brain, and tumor holograms and create a craniotomy plan through hologram interaction. These interactions included the ability to rotate the head to its desired location, perform an image-to-physical registration, and utilize a virtual stylus to collect points for the surgical plan. Furthermore, the app was expanded to also track physical tools with an optical tracker to provide a more realistic surgical planning scenario. With a tracked stylus, the user was capable of selecting points on the physical head to perform a registration where the 3D neuroanatomy models properly appeared in the physical head as a virtually augmented structure. To evaluate the prototype, practicing neurosurgeons were provided a demonstration and then promptly interviewed to assess design and efficacy. The tool alignment procedure was also evaluated to quantify the calibration error. Initial responses indicated that the prototype could be an effective surgical teaching and planning tool for less-experienced neurosurgeons because it could allow neurosurgeons to view physical and image space simultaneously.

Proceedings Article | 4 April 2022 Presentation + Paper

Digital application to display brain shift simulation in tumor resection procedures

Kush Hari, Rohan Vijayan, Ma Luo, Jaime Tierney, Jon Heiselman, Lola Chambless, Reid Thompson, Michael Miga

Proceedings Volume 12034, 120341J (2022) https://doi.org/10.1117/12.2611479

KEYWORDS: Brain, Surgery, 3D displays, 3D modeling, Prototyping, Mixed reality, Head, Tumors, Neuroimaging, Data modeling

Read Abstract +

The quality of neurosurgical planning can become compromised by soft tissue deformations that occur during surgery (i.e., brain shift). Conventional image guidance systems do not consider these intraoperative changes. In recent efforts, model based strategies have been developed to estimate surgical load displacements and modify the patient’s data intraoperatively to account for brain shift. While the efficacy of the model has been previously established, there is also an opportunity to further assist surgical planning with this pipeline. To address this, a mobile application designed for an Android tablet was developed to display simulated brain shifts that would occur during brain tumor surgery. The application has two primary functions to facilitate planning: a patient positioning mode and a simulation mode. The patient positioning mode allows the neurosurgeon to load the patient’s preoperative MR data and create a surgical plan (i.e., head orientation and craniotomy location) for the procedure. The simulation mode then displays both the preoperative data and the model predicted brain shift as a function of the specified orientation from the patient positioning mode. Additionally, to account for positional variations between planning and procedural implementation, the simulation mode also displays solutions with additional perturbations to the planned positioning to estimate shift possibilities. To assess the simulation mode prototype, practicing neurosurgeons were provided a prototype demonstration and interviews were performed to evaluate efficacy and design. Due to computational rendering and 3D rotation shortcomings based on clinical feedback, the prototype was redesigned into a full mixed reality simulation app on the Microsoft HoloLens. Preliminary survey responses show that the prototype could be an impactful surgical planning tool, especially among neurosurgeons with less experience.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years