You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website.
3 April 2019Experimental validation of a multi-step material decomposition method for spectral CT
Recently, we proposed a multi-step material decomposition method for spectral CT where the decomposition is solved in a series of steps each separating one new material from the original attenuation data. Until now, this method has only been tested using numerical simulations of multi-material digital phantoms. Here we present the initial results of the multistep method applied to experimental data acquired in our laboratory using a Medipix 3RX detector with a silicon senor. The decomposition of CT images of a 3-material phantom is demonstrated. The materials studied here are gadolinium (Gd), iodine (I) and acrylonitrile butadiene styrene (ABS) plastic. The results show qualitative and quantitative improvement in separation accuracy as the worst-case percent error in one selected slice is reduced by 51.7% when using our new method in comparison to a conventional single-step material decomposition.
The alert did not successfully save. Please try again later.
Nathaniel R. Fredette, Stefano Vespucci, Mini Das, "Experimental validation of a multi-step material decomposition method for spectral CT," Proc. SPIE 10948, Medical Imaging 2019: Physics of Medical Imaging, 109482T (3 April 2019); https://doi.org/10.1117/12.2513503