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Contrast enhanced CT attenuation correlates with the GAG content of bovine meniscus.


ABSTRACT: We determined whether contrast-enhanced computed tomography (CECT) attenuation obtained using a µCT scanner correlated with the glycosaminoglycan (GAG) content and distribution in ex vivo bovine menisci. Bovine samples were immersed in different concentrations of the contrast agents CA4+ and Ioxaglate, and the µCT images were compared to Safranin-O staining. CA4+ and Ioxaglate diffusion-in kinetics and the correlation between their CECT attenuations and GAG content were investigated. CA4+ and Ioxaglate both reached steady state in the meniscal regions within 95?h, with tau values of 20.6?±?3.98 and 25.9?±?3.71?h (mean?±?SD), respectively. Both agents diffused preferentially through the proximal and secondarily through the distal surface. The CA4+ CECT attenuation was strongly and positively correlated with the GAG content of the meniscus regions (R(2) ?=?0.89, p?

SUBMITTER: Lakin BA 

PROVIDER: S-EPMC3931129 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature

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Contrast enhanced CT attenuation correlates with the GAG content of bovine meniscus.

Lakin Bejamin A BA   Grasso Daniel J DJ   Stewart Rachel C RC   Freedman Jonathan D JD   Snyder Brian D BD   Grinstaff Mark W MW  

Journal of orthopaedic research : official publication of the Orthopaedic Research Society 20130705 11


We determined whether contrast-enhanced computed tomography (CECT) attenuation obtained using a µCT scanner correlated with the glycosaminoglycan (GAG) content and distribution in ex vivo bovine menisci. Bovine samples were immersed in different concentrations of the contrast agents CA4+ and Ioxaglate, and the µCT images were compared to Safranin-O staining. CA4+ and Ioxaglate diffusion-in kinetics and the correlation between their CECT attenuations and GAG content were investigated. CA4+ and Io  ...[more]

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