منابع مشابه
Introducing a bony composite as tissue equivalent for radiotherapy phantoms
The use of a device that simulates the actual condition, as well as being equivalent to the human body in materials and tissues, and having the capability of acting like internal motions of human body is necessary to investigate and simulate the motion of a tumor in radiotherapy and to evaluate dosimetrical coverage of the dynamic target. This device which is called the dynamic phantom should s...
متن کاملSuper‐size me: adipose tissue‐equivalent additions for anthropomorphic phantoms
Physical anthropomorphic phantoms have been utilized for a variety of dosimet- ric studies across a range of procedures utilizing diagnostic imaging equipment. Unfortunately, these phantoms are often limited to a single reference size, which often may not be representative of the patient population at large. This work set out to develop an adipose tissue-equivalent substitute material that coul...
متن کاملRadiochromic film dosimetry in water phantoms.
Radiochromic film is investigated for use in dosimetry in water phantoms as opposed to solid phantoms. Investigations are performed to measure the penetration rates of water into radiochromic film and to assess the effects on optical density that this penetration causes. The effects of film orientation during irradiation in water are also tested. Results show that only a small penetration rate ...
متن کاملHow water equivalent are water-equivalent solid materials for output calibration of photon and electron beams?
The water equivalency of five "water-equivalent" solid phantom materials was evaluated in terms of output calibration and energy characterization over a range of energies for both photon (Co-60 to 24 MV) and electron (6-20 MeV) beams. Evaluations compared absorbed doses calculated from ionization measurements using the same dosimeter in the solid phantom materials and in natural water (H2O). Io...
متن کاملPhotoacoustic tomography of water in phantoms and tissue.
Photoacoustic tomography (PAT) has been widely used to image optically absorptive objects in both human and animal tissues. For the first time, we present imaging of water with laser-based PAT. We photoacoustically measure the absorption spectra of water-ethanol mixtures at various water concentrations, and then image water-ethanol and pure-water inclusions in gel and a water inclusion in fat t...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1998
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00003110162