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1
Physics for Diagnostic Radiology, Third Edition
Even with a well-designed anode, a certain amount of extrafocal radiation arises
from regions of the anode out with the focal spot. These X-rays may be the result
of poorly collimated electrons but are more usually the consequence of ...
Philip Palin Dendy, Brian Heaton, 2011
2
Ciência Radiológica para Tecnólogos
Stewart Bushong. Elétrons retroespalhados / FIGURA 7-23 Raios X extrafocais
como resultado da interação de elétrons com o anodo fora do ponto focal. Esses
raios X são chamados de radiação extrafocal. Isso não é diferente de uma ...
3
Reflecting Telescope Optics II: Manufacture, Testing, ...
Extrafocal Extrafocal (uncorrected) (corrected) Extrafocal Intrafocal Fig. 2.14.
Extrafocal pupil plates taken in 1980 for the ESO 1m telescope at La Silla
showing (left) a "dent" at the top due to screw pressure on the edge of the
secondary and ...
4
Radiological Sciences Dictionary: Keywords, names and ...
Reference: Chaussy etal., 1980. extrafocal radiation (xray) The greatest source of
radiation from the x-ray tube comes from the optically effective focal spot;
radiation also originates from other regions within the tube, outside the focus.
5
Correlative Neurosciences: Fundamental Mechanisms: ...
Fundamental Mechanisms T. Tokizane. reticular formation. The multipolar cell
has generally extrafocal dendrites while the star-shaped cell does not have them.
The neurons with conglomerated dendrites mentioned above correspond to the ...
6
Partial Epilepsies—Advances in Research and Treatment: 2013 ...
extrafocal. iomazenil. activity. in. mesial. temporal. lobe. epilepsy. By a News
Reporter-Staff News Editor at Pain & Central Nervous System Week — Research
findings on Epilepsy are discussed in a new report. According to news reporting ...
Extrafocal radiation Extrafocal radiation is scatter radiation resulting when part of
the electrons emitted by the cathode are scattered back by the anode (without
energy loss). These electrons reach the potential gradient between the cathode ...
8
Choosing and Using a New CAT: Getting the Most from Your ...
Compare the way the diffraction rings of a slightly out-of-focus star look on each “
side” of focus, intrafocal (inside focus), and extrafocal (outside focus). In an SCT
or other moving mirror-focusing scope, intrafocal images come when the focus ...
9
Optical Detectors For Astronomy II: State-Of-The-Art at the ...
The change in intensity from intrafocal to extrafocal planes is due to the curvature
of the wavefront over the pupil and the tilt of the wavefront at the pupil edge. The
usefulness of this signal for adaptive optics was first recognized by Francois ...
P. Amico (Ed), James W. Beletic, 2000
10
Handbook of Optical Systems, Metrology of Optical Components ...
Herbert Gross. Figure 47-54: Knife edge test with the knife edge filter in the
intrafocal position. The shaded side in the knife edge image is flipped when the
position ofthe filter is closer to the system undertest than its focal point. In the
extrafocal ...
