Energy and angular distributions of photons from medical linear accelerators

1985 ◽  
Vol 12 (5) ◽  
pp. 592-597 ◽  
Author(s):  
Radhe Mohan ◽  
Chen Chui ◽  
Leon Lidofsky
Keyword(s):  
Angular Distributions ◽  
Linear Accelerators ◽  
Medical Linear Accelerators ◽  
Energy And Angular Distributions

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.

Some folded issues related to over-shielded and unplanned rooms for medical linear accelerators - A case study

2015 ◽  
Vol 67 (3) ◽  
pp. 599-607
Author(s):  
Wazir Muhammad ◽  
Asad Ullah ◽  
Amjad Hussain ◽  
Nawab Ali ◽  
Khan Alam ◽  
...  
Keyword(s):  
Linear Accelerators ◽  
Medical Linear Accelerators

The interaction of atomic particles with solid surfaces at intermediate energies IV. The energy and angular distributions of particles scattered with electric charge from polycrystalline platinum at bombarding energies of 500-5000 eV

1974 ◽  
Vol 341 (1625) ◽  
pp. 213-231 ◽  
Keyword(s):  
Charged Particles ◽  
Solid Surfaces ◽  
Hydrogen Ion ◽  
Angular Distributions ◽  
Sodium Potassium ◽  
Intermediate Energies ◽  
Polycrystalline Platinum ◽  
Composite Spectra ◽  
Energy And Angular Distributions ◽  
Bombarding Energy

The distributions in angle and energy for charged particles emitted from polycrystalline platinum bombarded with ions of hydrogen, sodium, potassium and some hydrocarbons, have been measured, in continuation of previous work (Cawthron, Cotterell & Oliphant 1969 a , b , parts I and II; 1970, part III) to lower energies. Composite spectra are presented, including ions of both signs. The flux of emitted charged particles, under hydrogen ion bombardment, is shown to contain approximately equal numbers of protons and H¯ ions, except at the lowest bombarding energies, where the latter apparently predominate. Scattering in all cases is shown to increase with bombarding energy over the range covered, the increase being near linear for hydrogen and very rapid for alkalimetal ions. In all cases the total emission of charged particles is very small at the lowest bombarding energies employed.

scholarly journals Energy and angular distributions of electrons from ion impact on atomic and molecular hydrogen. IV. 28–114-keVHe++ H collisions

1996 ◽  
Vol 53 (1) ◽  
pp. 303-311 ◽  
Author(s):  
Y.-Y. Hsu ◽  
M. W. Gealy ◽  
G. W. Kerby ◽  
M. E. Rudd ◽  
D. R. Schultz ◽  
...  
Keyword(s):  
Molecular Hydrogen ◽  
Angular Distributions ◽  
Ion Impact ◽  
Energy And Angular Distributions

A Model for Pre-emptive Maintenance of Medical Linear Accelerators: Predictive Maintenance

2014 ◽  
Vol 90 (1) ◽  
pp. S738
Author(s):  
C.M. Able ◽  
A.H. Baydush ◽  
C. Nguyen ◽  
J. Gersh ◽  
A. Ndlovu ◽  
...  
Keyword(s):  
Predictive Maintenance ◽  
Linear Accelerators ◽  
Medical Linear Accelerators

X-ray sources of medical linear accelerators: Focal and extra-focal radiation

1993 ◽  
Vol 20 (5) ◽  
pp. 1417-1427 ◽  
Author(s):  
D. A. Jaffray ◽  
J. J. Battista ◽  
A. Fenster ◽  
P. Munro
Keyword(s):  
Linear Accelerators ◽  
X Ray ◽  
Medical Linear Accelerators
Sign in / Sign up

Export Citation Format

Share Document