Zobraziť v EDS

Exact FBP reconstruction for dynamic pitch helical cone beam CT

Uložené v:

Podrobná bibliografia
Názov:	Exact FBP reconstruction for dynamic pitch helical cone beam CT
Autori:	Katsevich, Alexander, Basu, Samit, Hsieh, Jiang
Zdroj:	IEEE Symposium Conference Record Nuclear Science 2004.. 5:3299-3302
Informácie o vydavateľovi:	IEEE, 2005.
Rok vydania:	2005
Predmety:	03 medical and health sciences, Wide cone helical, 0302 clinical medicine, Filtered backprojection, 4. Education, 0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology, Dynamic pitch, Computed tomography, Exact reconstruction
Popis:	We present an extension of the exact filtered back-projection (FBP) formula for wide cone helical trajectories to more general helical trajectories. In particular, we show that the original formula presented applies for any helical trajectory in which the velocity plus derivative of acceleration does not change sign during the acquisition. This condition allows for helical trajectories in which the pitch changes dynamically during the scan, and as a byproduct, permits gantry tilt without any additional interpolation steps.
Druh dokumentu:	Article Other literature type
DOI:	10.1109/nssmic.2004.1466394
Prístupová URL adresa:	http://ieeexplore.ieee.org/document/1466394/
Prístupové číslo:	edsair.doi.dedup.....2a3fb0c3cff9343289533d36d38fa681
Databáza:	OpenAIRE

Popis
Abstrakt:	We present an extension of the exact filtered back-projection (FBP) formula for wide cone helical trajectories to more general helical trajectories. In particular, we show that the original formula presented applies for any helical trajectory in which the velocity plus derivative of acceleration does not change sign during the acquisition. This condition allows for helical trajectories in which the pitch changes dynamically during the scan, and as a byproduct, permits gantry tilt without any additional interpolation steps.
DOI:	10.1109/nssmic.2004.1466394