Bore-Mounted Camera Carrier for Radiotherapy Patient Motion Tracking
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Solution Overview
Problem
Bore-based medical systems, such as radiotherapy systems, restrict the view of ceiling-mounted cameras, limiting the monitoring and tracking of patient movement during treatment.
Innovation Solution
A camera carrier is integrated into the bore-based medical system, mounting two treatment monitoring cameras on the inner surface of the bore wall to cover a field of view including the iso-center focus point, allowing for accurate patient motion tracking during radiotherapy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ceiling-mounted cameras are used in conventional radiotherapy rooms, then the field of view covers the treatment room adequately, but the bore-based medical system restricts the view and limits patient motion monitoring capability
Solution Approach 1:
Instead of mounting cameras on the ceiling to look down at the patient, the patent inverts the approach by mounting cameras on the bore wall to look at the patient from the side. This inversion allows the cameras to capture patient motion within the restricted bore space while maintaining adequate field of view for monitoring purposes.
Solution Approach 2:
The patent transitions from a vertical ceiling-mounted camera arrangement to a horizontal bore-wall-mounted arrangement. This dimensional change allows the cameras to utilize the lateral space within the bore structure, providing a different viewing perspective that is better suited for monitoring patient motion during treatment.
2Reliability
If cameras are mounted on the bore wall, then patient motion can be monitored effectively within the bore, but the camera system complexity increases
Solution Approach 1:
The patent combines multiple cameras into an integrated camera system mounted on the bore wall. By merging the cameras and their support structure into a single coordinated unit, the system achieves reliable patient monitoring while managing complexity through unified design and integration.
Solution Approach 2:
The camera system mounted on the bore wall serves multiple functions: monitoring patient position, tracking patient motion during treatment, and providing visual feedback for treatment verification. This multi-functionality increases reliability while justifying the added complexity through enhanced monitoring capabilities.
Data Source
AI summary
Disclosed is a bore based medical system comprising a camera carrier configured to be mounted in the bore based medical system and configured to monitor and/or track patient motion within said bore based medical system during radiotherapy, the bore based medical system comprising a rotatable ring-gantry configured to emit a radiotherapy beam focused at an iso-center of the bore based medical system, wherein the ring-gantry is configured to rotate at least partly around a through-going bore having a front side and a back side, configured to receive from said front side, a movable couch configured to be moved into and out from the through-going bore, wherein further the through-going bore comprises an inner side facing an inside of the bore, and wherein the camera carrier is configured to be mounted inside the bore in connection with the inner side of the through-going bore.