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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1946 1
1949 2
1953 1
1954 2
1955 1
1956 1
1957 2
1958 1
1959 2
1960 2
1961 7
1962 5
1963 8
1964 10
1965 11
1966 10
1967 14
1968 20
1969 12
1970 18
1971 29
1972 24
1973 29
1974 41
1975 76
1976 66
1977 70
1978 57
1979 66
1980 57
1981 73
1982 68
1983 88
1984 69
1985 71
1986 85
1987 94
1988 95
1989 113
1990 124
1991 109
1992 119
1993 155
1994 178
1995 214
1996 218
1997 229
1998 293
1999 289
2000 310
2001 325
2002 349
2003 369
2004 410
2005 413
2006 443
2007 479
2008 436
2009 440
2010 465
2011 445
2012 590
2013 470
2014 517
2015 480
2016 502
2017 511
2018 522
2019 485
2020 501
2021 490
2022 455
2023 454
2024 200

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13,566 results

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Page 1
Design of a freeform two-reflector system to collimate and shape a point source distribution.
van Roosmalen AH, Anthonissen MJH, IJzerman WL, Ten Thije Boonkkamp JHM. van Roosmalen AH, et al. Opt Express. 2021 Aug 2;29(16):25605-25625. doi: 10.1364/OE.425289. Opt Express. 2021. PMID: 34614888 Free article.
In this paper we propose a method to compute a freeform reflector system for collimating and shaping a beam from a point source. We construct these reflectors such that the radiant intensity of the source is converted into a desired target. ...
In this paper we propose a method to compute a freeform reflector system for collimating and shaping a beam from a point source. We c …
Collimators.
Formiconi AR. Formiconi AR. Q J Nucl Med. 2002 Mar;46(1):8-15. Q J Nucl Med. 2002. PMID: 12072841
In section Collimator characterization: theory a general formulation that is valid for a wide range of collimators is outlined. ...The problem of performances optimization in collimator design is described in section Collimator design. Difficulties and …
In section Collimator characterization: theory a general formulation that is valid for a wide range of collimators is outlined …
Cylindrical-lens-embedded photonic crystal based on self-collimation.
Xia C, Gutierrez JJ, Kuebler SM, Rumpf RC, Touma J. Xia C, et al. Opt Express. 2022 Mar 14;30(6):9165-9180. doi: 10.1364/OE.452467. Opt Express. 2022. PMID: 35299352 Free article.
The lattice is based on a low-symmetry rod-in-wall unit cell that strongly self-collimates light. The walls are varied in thickness to modulate the effective refractive index so light acquires a spatially quadratic phase profile as it propagates through the device. Althoug …
The lattice is based on a low-symmetry rod-in-wall unit cell that strongly self-collimates light. The walls are varied in thickness t …
Nonlinearity-mediated collimation of optical beams.
Liang G, Shu F, Cheng W, Jiao L. Liang G, et al. Opt Express. 2022 Mar 28;30(7):10770-10778. doi: 10.1364/OE.455935. Opt Express. 2022. PMID: 35473036 Free article.
From an application point of view, two kinds of evolution processes for Gaussian beams, nonlinearity-mediated collimation and switching from breathers to solitons, were discussed in details. By adjusting the input optical power, the collimating, the compressing and …
From an application point of view, two kinds of evolution processes for Gaussian beams, nonlinearity-mediated collimation and switchi …
TIR RXI collimator.
Grabovičkić D, Benítez P, Miñano JC. Grabovičkić D, et al. Opt Express. 2012 Jan 2;20(1):A51-61. doi: 10.1364/oe.20.000a51. Opt Express. 2012. PMID: 22379667 Free article.
Unlike conventional RXI collimators, whose back surface and parts of the front surface have to be metalized, this collimator is completely metal-free, made only of plastic (PMMA). The collimator's back surface is designed as a grooved surface providing …
Unlike conventional RXI collimators, whose back surface and parts of the front surface have to be metalized, this collimator i …
Plasma devices to guide and collimate a high density of MeV electrons.
Kodama R, Sentoku Y, Chen ZL, Kumar GR, Hatchett SP, Toyama Y, Cowan TE, Freeman RR, Fuchs J, Izawa Y, Key MH, Kitagawa Y, Kondo K, Matsuoka T, Nakamura H, Nakatsutsumi M, Norreys PA, Norimatsu T, Snavely RA, Stephens RB, Tampo M, Tanaka KA, Yabuuchi T. Kodama R, et al. Nature. 2004 Dec 23;432(7020):1005-8. doi: 10.1038/nature03133. Nature. 2004. PMID: 15616556
A plasma fibre created on a hollow-cone target guides and collimates electrons in a manner akin to the control of light by an optical fibre and collimator. ...
A plasma fibre created on a hollow-cone target guides and collimates electrons in a manner akin to the control of light by an optical …
[Ballistic quality assurance].
Cassol E, Bonnet J, Porcheron D, Mazeron JJ, Peiffert D, Alapetite C. Cassol E, et al. Cancer Radiother. 2012 Jun;16 Suppl:S30-7. doi: 10.1016/j.canrad.2011.06.007. Epub 2012 May 24. Cancer Radiother. 2012. PMID: 22632786 Review. French.
Specific and periodic controls should be performed in order to check the mechanical stability for both irradiation and collimation systems. If this step remains under the responsibility of the medical physicist, it should be done in agreement with the manufacturer's techni …
Specific and periodic controls should be performed in order to check the mechanical stability for both irradiation and collimation sy …
Self-Collimating SPECT With Multi-Layer Interspaced Mosaic Detectors.
Ma T, Wei Q, Lyu Z, Zhang D, Zhang H, Wang R, Dong J, Liu Y, Yao R, He ZX. Ma T, et al. IEEE Trans Med Imaging. 2021 Aug;40(8):2152-2169. doi: 10.1109/TMI.2021.3073288. Epub 2021 Jul 30. IEEE Trans Med Imaging. 2021. PMID: 33852384
To simultaneously achieve high resolution and sensitivity, we propose to use sensitive detectors constructed in a multi-layer in ter spaced mosaicdetectors (MATRICES) architecture to accomplish part of the collimation needed. We name this new approach self-collimation …
To simultaneously achieve high resolution and sensitivity, we propose to use sensitive detectors constructed in a multi-layer in ter spaced …
Review of SPECT collimator selection, optimization, and fabrication for clinical and preclinical imaging.
Van Audenhaege K, Van Holen R, Vandenberghe S, Vanhove C, Metzler SD, Moore SC. Van Audenhaege K, et al. Med Phys. 2015 Aug;42(8):4796-813. doi: 10.1118/1.4927061. Med Phys. 2015. PMID: 26233207 Free PMC article. Review.
In single photon emission computed tomography, the choice of the collimator has a major impact on the sensitivity and resolution of the system. ...New opportunities for improved collimation are now arising primarily because of (i) new collimator-production te …
In single photon emission computed tomography, the choice of the collimator has a major impact on the sensitivity and resolution of t …
Advances in pinhole and multi-pinhole collimators for single photon emission computed tomography imaging.
Islamian JP, Azazrm A, Mahmoudian B, Gharapapagh E. Islamian JP, et al. World J Nucl Med. 2015 Jan-Apr;14(1):3-9. doi: 10.4103/1450-1147.150505. World J Nucl Med. 2015. PMID: 25709537 Free PMC article. Review.
One of the most important collimators that used in research, preclinical study, small animal, and organ imaging is the pinhole collimator. ...Current researches have focused on geometry and configuration of pinhole and multi-pinhole collimation rather than re …
One of the most important collimators that used in research, preclinical study, small animal, and organ imaging is the pinhole col …
13,566 results
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