Related Experiment Video
Updated: May 26, 2026

07:54
Preparing Adherent Cells for X-ray Fluorescence Imaging by Chemical Fixation
Published on: March 12, 2015
Elemental distribution images in prostate samples by X-ray fluorescence microtomography.
G R Pereira1, H S Rocha, M J Anjos
1Non-destructive Testing, Corrosion and Welding Laboratory, PEMM/COPPE/UFRJ, Rio de Janeiro, Brazil.
Summary
This study combined X-ray transmission microtomography (CT) and X-ray fluorescence microtomography (XRFμCT) to map elemental distribution in prostate tissue. The goal was to link elemental concentrations to tissue characteristics and disease pathology.
Area of Science:
- Medical Physics
- Biomedical Imaging
- Materials Science
Background:
- Prostate tissue analysis often requires understanding elemental composition.
- Advanced imaging techniques can provide detailed insights into tissue microstructures and elemental distribution.
Purpose of the Study:
- To implement and utilize a combined X-ray transmission microtomography (CT) and X-ray fluorescence microtomography (XRFμCT) system.
- To determine the elemental distribution within prostate tissue samples.
- To establish correlations between elemental concentrations and prostate tissue characteristics/pathology.
Main Methods:
- Integration of X-ray transmission microtomography (CT) and X-ray fluorescence microtomography (XRFμCT) systems.
- Utilized filtered-back projection algorithm for CT image reconstruction.
- Employed filtered-back projection with absorption corrections for XRFμCT image reconstruction.
Main Results:
- Successfully implemented a dual-modality microtomography system for elemental mapping.
- Generated detailed elemental distribution maps for prostate tissue samples.
- Laid the groundwork for correlating elemental data with tissue pathology.
Conclusions:
- The combined CT and XRFμCT system is effective for analyzing elemental distribution in biological tissues.
- This approach holds potential for advancing the understanding of prostate cancer and other diseases through elemental analysis.
More Related Videos
Related Concept Videos
Electron Microscope Tomography and Single-particle Reconstruction
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Scanning Electron Microscopy
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
Fundamental Principles
Accelerated...
X-ray Diffraction of Biological Samples
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...

