Abstract
BACKGROUND AND PURPOSE: In this paper, we investigate the possibility to use X-ray based real time 2D/3D registration for non-invasive tumor motion monitoring during radiotherapy.
MATERIALS AND METHODS: The 2D/3D registration scheme is implemented using general purpose computation on graphics hardware (GPGPU) programming techniques and several algorithmic refinements in the registration process. Validation is conducted off-line using a phantom and five clinical patient data sets. The registration is performed on a region of interest (ROI) centered around the planned target volume (PTV).
RESULTS: The phantom motion is measured with an rms error of 2.56 mm. For the patient data sets, a sinusoidal movement that clearly correlates to the breathing cycle is shown. Videos show a good match between X-ray and digitally reconstructed radiographs (DRR) displacement. Mean registration time is 0.5 s.
CONCLUSIONS: We have demonstrated that real-time organ motion monitoring using image based markerless registration is feasible.
| Original language | English |
|---|---|
| Pages (from-to) | 274-280 |
| Number of pages | 7 |
| Journal | Radiotherapy and Oncology |
| Volume | 102 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2012 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- Algorithms
- Carcinoma, Non-Small-Cell Lung/diagnostic imaging
- Humans
- Imaging, Three-Dimensional
- Lung Neoplasms/diagnostic imaging
- Motion
- Phantoms, Imaging
- Radiographic Image Interpretation, Computer-Assisted/methods
- Radiotherapy Planning, Computer-Assisted/methods
- Tomography, X-Ray Computed
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