scholarly journals Validating kQ =1.0 assumption in TG51 with PTW 30013 farmer chamber for Varian TrueBeam's 2.5 MV imaging beam

2018 ◽  
Vol 19 (3) ◽  
pp. 351-354 ◽  
Author(s):  
Shelby Grzetic ◽  
Ahmet S. Ayan ◽  
Jeffrey Woollard ◽  
Nilendu Gupta
Keyword(s):  
Imaging Beam

A new approach for 3D reconstruction from bright field TEM imaging: Beam precession assisted electron tomography

2011 ◽  
Vol 111 (9-10) ◽  
pp. 1504-1511 ◽  
Author(s):  
J.M. Rebled ◽  
Ll. Yedra ◽  
S. Estradé ◽  
J. Portillo ◽  
F. Peiró
Keyword(s):  
3D Reconstruction ◽  
Electron Tomography ◽  
Bright Field ◽  
New Approach ◽  
Imaging Beam

Microstructured Optics for Excimer-based Systems: Applications for Imaging, Beam Shaping and Coherence Management

2010 ◽  
Author(s):  
Robert Brunner ◽  
Hans Jürgen Dobschal ◽  
Reinhard Steiner ◽  
Matthias Burkhardt ◽  
Matthias Cumme ◽  
...  
Keyword(s):  
Beam Shaping ◽  
Imaging Beam

scholarly journals Sensor-Based Technique for Manually Scanned Hand-Held Optical Coherence Tomography Imaging

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Paritosh Pande ◽  
Guillermo L. Monroy ◽  
Ryan M. Nolan ◽  
Ryan L. Shelton ◽  
Stephen A. Boppart
Keyword(s):  
Optical Coherence Tomography ◽  
Data Acquisition ◽  
Motion Artifacts ◽  
Optical Coherence ◽  
Fixed Rate ◽  
Imaging Probes ◽  
Optical Motion ◽  
Optical Coherence Tomography Imaging ◽  
Oct Imaging ◽  
Imaging Beam

Hand-held optical coherence tomography (OCT) imaging probes offer flexibility to image sites that are otherwise challenging to access. While the majority of hand-held imaging probes utilize galvanometer- or MEMS-scanning mirrors to transversely scan the imaging beam, these probes are commonly limited to lateral fields-of-view (FOV) of only a few millimeters. The use of a freehand manually scanned probe can significantly increase the lateral FOV. However, using the traditional fixed-rate triggering scheme for data acquisition in a manually scanned probe results in imaging artifacts due to variations in the scan velocity of the imaging probe. These artifacts result in a structurally inaccurate image of the sample. In this paper, we present a sensor-based manual scanning technique for OCT imaging, where real-time feedback from an optical motion sensor is used to trigger data acquisition. This technique is able to circumvent the problem of motion artifacts during manual scanning by adaptively altering the trigger rate based on the instantaneous scan velocity, enabling OCT imaging over a large lateral FOV. The feasibility of the proposed technique is demonstrated by imaging several biological and nonbiological samples.

SU-E-J-14: A Comparison of a 2.5MV Imaging Beam to KV and 6MV Imaging Beams

2015 ◽  
Vol 42 (6) ◽  
pp. 3266-3266
Author(s):  
P Nitsch ◽  
D Robertson ◽  
P Balter
Keyword(s):  
Imaging Beam

Design study of the imaging beam line at J-PARC MLF, ERNIS

2011 ◽  
Vol 651 (1) ◽  
pp. 16-20 ◽  
Author(s):  
Y. Kiyanagi ◽  
T. Kamiyama ◽  
H. Sato ◽  
T. Shinohara ◽  
T. Kai ◽  
...  
Keyword(s):  
Beam Line ◽  
Design Study ◽  
Imaging Beam
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