| Autor: |
S, Weber, T, Schüle, C, Schnörr, J, Hornegger |
| Rok vydání: |
2004 |
| Předmět: |
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| Zdroj: |
Methods of information in medicine. 43(4) |
| ISSN: |
0026-1270 |
| Popis: |
We investigate the feasibility of binary-valued 3D tomographic reconstruction using only a small number of projections acquired over a limited range of angles.Regularization of this strongly ill-posed problem is achieved by (i) confining the reconstruction to binary vessel/non-vessel decisions, and (ii) by minimizing a global functional involving a smoothness prior.Our approach successfully reconstructs volumetric vessel structures from three projections taken within 90 degrees. The percentage of reconstructed voxels differing from ground truth is below 1%.We demonstrate that for particular applications--like Digital Subtraction Angiography--3D reconstructions are possible where conventional methods must fail, due to a severely limited imaging geometry. This could play an important role for dose reduction and 3D reconstruction using non-conventional technical setups. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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