Novel Technique to Obtain 3D Kinematics

Researchers from the University of Pittsburgh have developed a novel method for the collection of 3D kinematics data using a dynamic filter.

Description

Accurate 3D kinematic data are needed to fully understand normal and pathological biomechanics, yet collection of dynamic radiographic data, particularly X-ray images, can be particularly problematic. A filter has been designed to sit on the collimator of the radiographic device that moves with the subject within the radiographic imaging system. Filter movement is controlled by an inertial measurement unit (IMU) on the subject’s body within the imaging system. This method is designed to prevent washout of the radiographic image, improving the ability to collect accurate dynamic images.

Applications

1. Dynamic radiographic data
2. Biomechanical studies and research
3. Management of damaged, diseased, or herniated lumbar discs
4. Rehabilitation and recovery

Advantages

A previous approach developed by the same team in Pittsburgh has overcome some of the limitations of high-speed dynamic stereo-radiography (DSX), confirming analysis is possible in living subjects. Using a filter positioned behind the subject, success was demonstrated through the accurate collection and analysis of lumbar intervertebral kinematics during functional tasks. Additionally, there is the potential to address key knowledge gaps in lumbar kinematics.

The new method is designed to optimize the previous approach using a dynamic filter attached to the collimator that moves with the subject and is controlled by an IMU on the subject’s body.

Invention Readiness

The new method builds on the previous approach to DSX where a fixed filter positioned behind the subject followed them through a range of motion. A new filter has been developed, designed to sit on the collimator and move with the individual within the imaging field of view.

IP Status

https://patents.google.com/patent/WO2024129577A1