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EnglishWe have investigated a non-conventional angiographic imaging methodology called dual energy angiography (DEA) based on a quasi-monochromatic X-rays source. An experimental DEA apparatus was developed. The Bragg monochromator, mounted on a standard W-anode X-ray tube, generates two thin parallel beams with energies peaked before (at EL=31.1 keV) and after (at EH=35.3 keV) the iodine K-edge (EK=33.2 keV). Images result as the difference between the logarithms of the transmitted intensities of the two beams. A dedicated dynamic phantom, simulating different tissues absorption and containing calibrated vessels, was scanned under the monochromator slits by a PC-controlled scanning system. Two types of detectors were used and tested: a linear CCD coupled with FOS and a Si-strips detector with energy window discriminator. In this work resulting imaging capabilities of the DEA experimental system were compared with those of a commercial SIEMENS ANGIOSTAR digital subtraction angiographic apparatus.
| Titolo: | Characterization of a Dual Energy Angiographic System with CCD+FOS and Si-strips Detectors |
| Autore/i: | BALDAZZI, GIUSEPPE; D. Bollini; A. E. Cabal Rodriguez; M. Gambaccini; GOMBIA, MIRKO; P. Grybos; J. Lopez Gaitan; G. Pancaldi; F. Prino; L. Ramello; L. Roma; ROSSI, PIER LUCA; A. Sarnelli; K. Swientek; A. Taibi; A. Tuffanelli; M. Zuffa |
| Autore/i Unibo: | |
| Anno: | 2004 |
| Serie: | |
| Titolo del libro: | Nuclear Science Symposium Conference Record, 2004 IEEE |
| Pagina iniziale: | 3234 |
| Pagina finale: | 3238 |
| Abstract: | We have investigated a non-conventional angiographic imaging methodology called dual energy angiography (DEA) based on a quasi-monochromatic X-rays source. An experimental DEA apparatus was developed. The Bragg monochromator, mounted on a standard W-anode X-ray tube, generates two thin parallel beams with energies peaked before (at EL=31.1 keV) and after (at EH=35.3 keV) the iodine K-edge (EK=33.2 keV). Images result as the difference between the logarithms of the transmitted intensities of the two beams. A dedicated dynamic phantom, simulating different tissues absorption and containing calibrated vessels, was scanned under the monochromator slits by a PC-controlled scanning system. Two types of detectors were used and tested: a linear CCD coupled with FOS and a Si-strips detector with energy window discriminator. In this work resulting imaging capabilities of the DEA experimental system were compared with those of a commercial SIEMENS ANGIOSTAR digital subtraction angiographic apparatus. |
| Data prodotto definitivo in UGOV: | 26-giu-2013 |
| Appare nelle tipologie: | 4.01 Contributo in Atti di convegno |
File in questo prodotto:
http://hdl.handle.net/11585/111417
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