| Autor: |
W D, Renner, T P, O'Connor, S R, Amtey, P R, Reddi, G K, Bahr, J G, Kereiakes |
| Rok vydání: |
1977 |
| Předmět: |
|
| Zdroj: |
Radiology. 125(2) |
| ISSN: |
0033-8419 |
| Popis: |
The surface topography of a patient can be determined by photogrammetry before beginning radiotherapy. The source light of the therapy unit or simulator is used to project a grid pattern onto the patient, and this is then photographed together with control points consisting of miniature light bulbs mounted on a frame suspended from the wedge slot of the therapy machine. When the photograph is projected onto a graphics terminal for data entry into a computer, the three-dimensional topography of the patient's surface can be reconstructed as a two-dimensional matrix of discrete points. A computer algorithm can then design a tissue compensator to fit the individual patient. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
