Transmission computerized tomography

FIGURE 19.2 Procedure for three-dimensional-transmission electron microscopic (3D-TEM) observation, composed of TEM measurements and computerized tomography to reconstruct a 3D image. (From Kohjiya, S., Kato, A., Shimanuki, J., Hasegawa, T., and Ikeda, Y., Polymer, 46, 4440, 2005. With permission.)... 

Table 5.2 Summary of selected analytical methods for molecular environmental geochemistry. AAS Atomic absorption spectroscopy AFM Atomic force microscopy (also known as SFM) CT Computerized tomography EDS Energy dispersive spectrometry. EELS Electron energy loss spectroscopy EM Electron microscopy EPR Electron paramagnetic resonance (also known as ESR) ESR Electron spin resonance (also known as EPR) EXAFS Extended X-ray absorption fine structure FUR Fourier transform infrared FIR-TEM Fligh-resolution transmission electron microscopy ICP-AES Inductively-coupled plasma atomic emission spectrometry ICP-MS Inductively-coupled plasma mass spectrometry. Reproduced by permission of American Geophysical Union. O Day PA (1999) Molecular environmental geochemistry. Rev Geophysics 37 249-274. Copyright 1999 American Geophysical Union...

Grodzins L. Optimum energies for x-ray transmission tomography of small samples applications of synchrotron radiation to computerized tomography I. Nucl Instrum Methods Phys Res, 1983 206(3) 541 545. 

The generic term computerized tomography has expanded to include several different areas, including X-ray CT, ECT, and NMR CT. CT has been applied primarily in the field of diagnostic imaging. It can be divided into three major areas, depending on the source and detector mechanism transmission CT, emission CT, and NMR CT. 

Figure 1 shows the spatial resolution of various types of microscopes and scattering methods. The figure includes 3D microscopy such as laser scanning confocal microscopy (LSCM), X-ray computerized tomography (X-ray CT), and transmission electron microtomography (TEMT). Although no experimental results obtained from the X-ray CT will be presented in the present review paper, we note that the microscopy [4] is particularly usefiil to... 

Transmission tomography can be conqiared to a silent movie one can see what happens physically with the organs. Emission tomography (next section) uses internally administered radioactive isotopes, which provides explanation to why the organs function as they do. Thus, to extend the comparison, computerized emission tomography becomes more like a medical sound movie of the patient. 

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