Image quality analysis of vibration effects In C-arm-flat panel X-ray imaging

R.M. Snoeren, J.N. Kroon, P.H.N. With, de

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6 Citaten (Scopus)
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Samenvatting

The motion of C-arm scanning X-ray systems may result in vibrations of the imaging sub-system. In this paper, we connect C-arm system vibrations to Image Quality (IQ) deterioration for 2D angiography and 3D cone beam X-ray imaging, using large Flat Panel detectors. Vibrations will affect the projected image sharpness and the projected image position. The former will appear as blur and the latter as image shift for the 2D projection radiography process. If this phenomenon is not corrected in the post processing (pixel shift), it will manifest as subtraction registration artifacts. We will model and verify the effect of vibrations in 2D subtracted and non-subtracted flat panel imaging. Two effects on 3D IQ are modeled: (1) vibrations during an actual acquisition run inducing movement blur and (2) C-arm movement calibration errors in the iso-center giving remnant blur. The model establishes a relation between vibration amplitudes and image quality for dominant system Eigen-frequencies. The validity and accuracy of the model for 2D and 3D imaging modes is supported and demonstrated by experiments and even provides sufficient quality for defining image quality requirements.
Originele taal-2Engels
TitelProceedings of the 4th International Conference on Image and Signal Processing (CISP'11 ), 15-17 October, 2011, Shanghai, China
Plaats van productiePiscataway
UitgeverijInstitute of Electrical and Electronics Engineers
Pagina's1716-1722
ISBN van geprinte versie978-1-4244-9304-3
DOI's
StatusGepubliceerd - 2011
Evenement4th International Congress on Image and Signal Processing (CISP 2011) - Shanghai, China
Duur: 15 nov 201117 nov 2011
Congresnummer: 4

Congres

Congres4th International Congress on Image and Signal Processing (CISP 2011)
Verkorte titelCISP 2011
Land/RegioChina
StadShanghai
Periode15/11/1117/11/11
Ander4th International Conference on Image and Signal Processing (CISP'11 )

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