scholarly journals Technical note: A modified gamma evaluation method for dose distribution comparisons

2019 ◽  
Vol 20 (7) ◽  
pp. 193-200 ◽  
Author(s):  
Liting Yu ◽  
Tanya Kairn ◽  
Jamie Trapp ◽  
Scott B. Crowe
Keyword(s):  
Dose Distribution ◽  
Evaluation Method ◽  
Technical Note ◽  
Gamma Evaluation

The gamma evaluation method as a routine QA procedure of IMRT

2009 ◽  
Vol 14 (5) ◽  
pp. 162-168 ◽  
Author(s):  
Janusz WINIECKI ◽  
Tomasz MORGAŚ ◽  
Karolina MAJEWSKA ◽  
Barbara DRZEWIECKA
Keyword(s):  
Evaluation Method ◽  
Gamma Evaluation

Using Monte-Carlo-Simulated Radiation Transport to Calculate Dose Distribution in Rats before Irradiation with Leksell Gamma Knife® 4C: Technical Note

2010 ◽  
Vol 88 (4) ◽  
pp. 208-215 ◽  
Author(s):  
Béatrice Marcelin ◽  
Per Kjäll ◽  
Jonas Johansson ◽  
Anders Lundin ◽  
Håkan Nordström ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Gamma Knife ◽  
Dose Distribution ◽  
Radiation Transport ◽  
Technical Note

The influence of the IMRT QA set-up error on the 2D and 3D gamma evaluation method as obtained by using Monte Carlo simulations

2015 ◽  
Vol 67 (10) ◽  
pp. 1859-1867 ◽  
Author(s):  
Kyeong-Hyeon Kim ◽  
Dong-Su Kim ◽  
Tae-Ho Kim ◽  
Seong-Hee Kang ◽  
Min-Seok Cho ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Evaluation Method ◽  
Imrt Qa ◽  
Gamma Evaluation ◽  
Set Up ◽  
2D And 3D

Application of the gamma evaluation method in Gamma Knife film dosimetry

2011 ◽  
Vol 38 (10) ◽  
pp. 5778-5787 ◽  
Author(s):  
Jeong-Hoon Park ◽  
Jung Ho Han ◽  
Chae-Yong Kim ◽  
Chang Wan Oh ◽  
Do-Heui Lee ◽  
...  
Keyword(s):  
Gamma Knife ◽  
Evaluation Method ◽  
Film Dosimetry ◽  
Gamma Evaluation

Evaluation method for imaging plate resolution by means of phase contrast transfer function

1995 ◽  
Vol 53 ◽  
pp. 662-663 ◽  
Author(s):  
T. Oikawa ◽  
H. Kosugi ◽  
F. Hosokawa ◽  
D. Shindo ◽  
M. Kersker
Keyword(s):  
Transfer Function ◽  
Phase Contrast ◽  
Evaluation Method ◽  
Amorphous Film ◽  
Imaging Plate ◽  
X Rays ◽  
Special Shape ◽  
Contrast Transfer Function ◽  
Contrast Image ◽  
Specimen Shape

Evaluation of the resolution of the Imaging Plate (IP) has been attempted by some methods. An evaluation method for IP resolution, which is not influenced by hard X-rays at higher accelerating voltages, was proposed previously by the present authors. This method, however, requires truoblesome experimental preperations partly because specially synthesized hematite was used as a specimen, and partly because a special shape of the specimen was used as a standard image. In this paper, a convenient evaluation method which is not infuenced by the specimen shape and image direction, is newly proposed. In this method, phase contrast images of thin amorphous film are used.Several diffraction rings are obtained by the Fourier transformation of a phase contrast image of thin amorphous film, taken at a large under focus. The rings show the spatial-frequency spectrum corresponding to the phase contrast transfer function (PCTF). The envelope function is obtained by connecting the peak intensities of the rings. The evelope function is offten used for evaluation of the instrument, because the function shows the performance of the electron microscope (EM).

New AAC Access Strategy for Gesture Tracking: A Technical Note

2012 ◽  
Vol 21 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Susan Fager ◽  
Tom Jakobs ◽  
David Beukelman ◽  
Tricia Ternus ◽  
Haylee Schley
Keyword(s):  
Augmentative And Alternative Communication ◽  
Technical Note ◽  
Head Tracking ◽  
Alternative Communication ◽  
Access Methods ◽  
Cord Injury ◽  
Physical Limitations ◽  
Gesture Tracking ◽  
Communication Needs ◽  
Tracking Device

Abstract This article summarizes the design and evaluation of a new augmentative and alternative communication (AAC) interface strategy for people with complex communication needs and severe physical limitations. This strategy combines typing, gesture recognition, and word prediction to input text into AAC software using touchscreen or head movement tracking access methods. Eight individuals with movement limitations due to spinal cord injury, amyotrophic lateral sclerosis, polio, and Guillain Barre syndrome participated in the evaluation of the prototype technology using a head-tracking device. Fourteen typical individuals participated in the evaluation of the prototype using a touchscreen.

Technical Note

1998 ◽  
Vol 47 (3) ◽  
pp. 153-160
Author(s):  
Wang ◽  
Park ◽  
Kang ◽  
Oh
Keyword(s):  
Technical Note
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