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Updated: Aug 11, 2026

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Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy
Published on: June 7, 2015
Three dimensional radiation therapy planning using light projection of CT scans
1Cancer Control Agency of British Columbia, Vancouver, Canada.
Clinical Radiology
|July 1, 1989
Summary
A novel method simplifies transferring computed tomography (CT) scan images to radiotherapy planning films. This technique utilizes a modified overhead projector for accurate image transfer, enhancing radiation therapy planning.
Area of Science:
- Medical Imaging
- Radiotherapy Technology
- Radiation Oncology
Background:
- Accurate image transfer is crucial for effective radiotherapy planning.
- Traditional methods for transferring CT scan images can be time-consuming and prone to inaccuracies.
- Optimizing the workflow for radiotherapy planning is essential for patient care.
Purpose of the Study:
- To describe a simple, quick, and accurate method for transferring computed tomography (CT) scan images onto radiotherapy planning films.
- To introduce a modified overhead projector as a tool for enhancing the accuracy of image transfer in radiation therapy.
Main Methods:
- A modified overhead projector with variable magnification was employed.
- The projector was used to transfer CT scan images directly onto radiotherapy planning films.
- The method focused on ensuring accuracy and speed in the image transfer process.
Main Results:
- The described method provides a simple and quick way to transfer CT images.
- The use of a modified overhead projector ensures accurate image transfer.
- Variable magnification properties of the projector allow for precise image scaling.
Conclusions:
- This modified overhead projector method offers an efficient and accurate solution for transferring CT scan images in radiotherapy planning.
- The technique has the potential to improve the overall workflow and precision of radiation therapy.

