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Automatic filter placement device for region of interest (ROI) fluoroscopy
M Kezerashvili1, S Rudin, D Bednarek
1University of Buffalo, Department of Radiology and Biophysical Sciences, NY 14215, USA.
Health Physics
|January 1, 1997
Summary
A novel filter placement device enables practical Region of Interest (ROI) fluoroscopy, significantly reducing patient radiation dose. This automated system ensures rapid filter deployment and removal, compatible with standard fluoroscopic equipment.
Area of Science:
- Medical Physics
- Radiological Imaging
- Biomedical Engineering
Background:
- Fluoroscopy involves patient exposure to peripheral radiation.
- Region of Interest (ROI) fluoroscopy aims to reduce this dose.
- Practical implementation of ROI fluoroscopy requires specialized equipment.
Purpose of the Study:
- To design and construct a filter placement device for practical ROI fluoroscopy.
- To demonstrate the feasibility of reducing patient integral dose using ROI fluoroscopy.
- To ensure compatibility with existing fluoroscopic equipment and procedures.
Main Methods:
- A filter placement device was designed and built for ROI fluoroscopy.
- The device automatically inserts and removes an ROI filter using an electronic signal.
- It attaches to standard fluoroscopic collimators and uses a compact, motorized mechanism.
Main Results:
- The device enables rapid filter positioning (200 ms) without interfering with spot filming.
- It integrates seamlessly with standard fluoroscopic equipment.
- The system allows for patient radiation monitoring via an ionization chamber.
Conclusions:
- The developed filter placement device makes ROI fluoroscopy practically achievable.
- This technology offers a significant reduction in patient integral dose.
- It is compatible with standard fluoroscopic setups, facilitating widespread adoption.