Busse M(1), Marciniszyn JP(2), Ferstl S(1), Kimm MA(3), Pfeiffer F(1)(3), Gulder T(2)(4). Author information:
(1)Department of Physics and Munich School of BioEngineering, Technical
University Munich, 85748, Garching, Germany.
(2)Department of Chemistry and Catalysis Research Center (CRC), Technical
University Munich, 85748, Garching, Germany.
(3)Department of Diagnostic and Interventional Radiology, Klinikum Rechts der
Isar, Technical University Munich, 81675, Munich, Germany.
(4)Institute of Organic Chemistry, Leipzig University, 04103, Leipzig, Germany.
Conventional histology is a destructive technique based on the evaluation of 2D slices of a 3D biopsy. By using 3D X-ray histology these obstacles can be overcome, but their application is still restricted due to the inherently low attenuation properties of soft tissue. In order to solve this problem, the tissue can be stained before X-ray computed tomography imaging (CT) to enhance the soft tissue X-ray contrast. Evaluation of brominated fluorescein salts revealed a mutual influence of the number of bromine atoms and the cations applied on the achieved contrast enhancement. The dibromo fluorescein barium salt turned out to be the ideal X-ray contrast agent, allowing for 3D imaging and subsequent complementing counterstaining applying standard histological techniques.
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