Transmission images and evaluation of tomographic imaging based scattered radiation from biological materials using 10, 15, 20 and 25 keV synchrotron X-rays: An analysis in terms of optimum energy

2004 ◽  
Author(s):  
Donepudi V. Rao
Keyword(s):  
Scattered Radiation ◽  
Biological Materials ◽  
Tomographic Imaging ◽  
X Rays ◽  
Optimum Energy

scholarly journals SPECTRAL ANALYSIS OF SCATTERED RADIATION IN DIAGNOSTIC X-RAYS

1992 ◽  
Vol 48 (10) ◽  
pp. 1815-1822
Author(s):  
MASARU NAKAMURA ◽  
HIDEKI KATO ◽  
TAKAO KAMADA
Keyword(s):  
Spectral Analysis ◽  
Scattered Radiation ◽  
X Rays

scholarly journals The Use of Optical Coherence Tomography in Dental Diagnostics: A State-of-the-Art Review

2017 ◽  
Vol 2017 ◽  
pp. 1-31 ◽  
Author(s):  
Monika Machoy ◽  
Julia Seeliger ◽  
Liliana Szyszka-Sommerfeld ◽  
Robert Koprowski ◽  
Tomasz Gedrange ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Time Delay ◽  
Internal Structure ◽  
State Of The Art ◽  
Biological Tissues ◽  
Tomographic Imaging ◽  
Optical Coherence ◽  
X Rays ◽  
Analytical Technology

Optical coherence tomography provides sections of tissues in a noncontact and noninvasive manner. The device measures the time delay and intensity of the light scattered or reflected from biological tissues, which results in tomographic imaging of their internal structure. This is achieved by scanning tissues at a resolution ranging from 1 to 15 μm. OCT enables real-time in situ imaging of tissues without the need for biopsy, histological procedures, or the use of X-rays, so it can be used in many fields of medicine. Its properties are not only particularly used in ophthalmology, in the diagnosis of all layers of the retina, but also increasingly in cardiology, gastroenterology, pulmonology, oncology, and dermatology. The basic properties of OCT, that is, noninvasiveness and low wattage of the used light, have also been appreciated in analytical technology by conservators, who use it to identify the quality and age of paintings, ceramics, or glass. Recently, the OCT technique of visualization is being tested in different fields of dentistry, which is depicted in the article.

Optimum energy window setting on Hg-201 x-rays photopeak for effective Tl-201 imaging

2005 ◽  
Vol 19 (7) ◽  
pp. 541-547 ◽  
Author(s):  
Akihiro Kojima ◽  
Akihiro Takaki ◽  
Teruya Noguchi ◽  
Masanori Matsumoto ◽  
Noboru Katsuda ◽  
...  
Keyword(s):  
X Rays ◽  
Energy Window ◽  
Optimum Energy

Interaction of ionizing radiations with matter

2015 ◽  
Author(s):  
Colin J Martin
Keyword(s):  
Radiation Dose ◽  
Scattered Radiation ◽  
Final Section ◽  
Radioactive Decay ◽  
Photoelectric Effect ◽  
X Rays ◽  
X Ray ◽  
Radiation Fields ◽  
Ionizing Radiations ◽  
Radiology Image

Interactions of ionizing radiations with matter are fundamental to the practice of radiation protection. They determine the magnitude and distribution of doses in tissues, the performance of detectors and imaging devices, and the attenuating properties of shielding materials. This chapter describes briefly the processes of radioactive decay and the properties of the various particles emitted, and then goes on to consider the interactions of radiation with matter. Electron interactions with metals result in bremsstrahlung and characteristic X-rays that form the basis of X-ray production. The interaction mechanisms of X-rays with tissue, particularly the photoelectric effect and Compton scattering, are inherent in the process of radiology image formation. Understanding the physics behind X-ray interactions so that scattered radiation can be taken into account is crucial in designing methods for accurately measuring radiation dose parameters. The final section deals with the dose related variables involved in measurement of radiation fields.

Sign in / Sign up

Export Citation Format

Share Document