scholarly journals Analysis of Radioactivation Induced by High-energy X-rays in Medical Linear Accelerators -Estimation of Short-lived Radioactivated Nuclides-

2010 ◽  
Vol 66 (6) ◽  
pp. 599-608 ◽  
Author(s):  
Yusuke Suzuki ◽  
Takahiro Aoyama ◽  
Hiroki Takahashi ◽  
Hideki Kato ◽  
Hiroshi Fukuma ◽  
...  
Keyword(s):  
High Energy ◽  
X Rays ◽  
Linear Accelerators ◽  
Medical Linear Accelerators

A method of absorbed dose determination using vitamin B2 water for optical imaging of X-rays from high energy medical linear accelerators

2020 ◽  
Vol 131 ◽  
pp. 106227
Author(s):  
Chihiro Toyonaga ◽  
Seiichi Yamamoto ◽  
Katsunori Yogo ◽  
Kuniyasu Okudaira ◽  
Fumitaka Kawabata ◽  
...  
Keyword(s):  
Optical Imaging ◽  
Absorbed Dose ◽  
High Energy ◽  
X Rays ◽  
Vitamin B2 ◽  
Linear Accelerators ◽  
Dose Determination ◽  
Medical Linear Accelerators

scholarly journals Synchrotron X-ray induced acoustic imaging

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Seongwook Choi ◽  
Eun-Yeong Park ◽  
Sinyoung Park ◽  
Jong Hyun Kim ◽  
Chulhong Kim
Keyword(s):  
Acoustic Imaging ◽  
Signal Frequency ◽  
X Rays ◽  
Repetition Period ◽  
Linear Accelerators ◽  
X Ray ◽  
X Ray Computed ◽  
Medical Linear Accelerators ◽  
Ionizing Radiation Exposure ◽  
X Ray Absorption

AbstractX-ray induced acoustic imaging (XAI) is an emerging biomedical imaging technique that can visualize X-ray absorption contrast at ultrasound resolution with less ionizing radiation exposure than conventional X-ray computed tomography. So far, medical linear accelerators or industrial portable X-ray tubes have been explored as X-ray excitation sources for XAI. Here, we demonstrate the first feasible synchrotron XAI (sXAI). The synchrotron generates X-rays, with a dominant energy of 4 to 30 keV, a pulse-width of 30 ps, a pulse-repetition period of 2 ns, and a bunch-repetition period of 940 ns. The X-ray induced acoustic (XA) signals are processed in the Fourier domain by matching the signal frequency with the bunch-repetition frequency. We successfully obtained two-dimensional XA images of various lead targets. This novel sXAI tool could complement conventional synchrotron applications.

The effect of field modifier blocks on the fast photoneutron dose equivalent from two high-energy medical linear accelerators

2007 ◽  
Vol 128 (3) ◽  
pp. 359-362 ◽  
Author(s):  
S. M. Hashemi ◽  
B. Hashemi-Malayeri ◽  
G. Raisali ◽  
P. Shokrani ◽  
A. A. Sharafi ◽  
...  
Keyword(s):  
High Energy ◽  
Dose Equivalent ◽  
Linear Accelerators ◽  
Medical Linear Accelerators
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