Zobrazeno 1 - 10 of 56 pro vyhledávání: '"H H Barrett"'
1
ULTRASONIC PROPAGATION VELOCITY IN KTaO
Autor: H H, Barrett
Publikováno v: Physics letters. A. 26(6)
Ultrasonic velocity measurements in KTaO3 between 2° and 300°K are reported. No evidence for a phase transition was observed.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::260fafa60857dd656c4572f9fc956cda
https://pubmed.ncbi.nlm.nih.gov/26594086
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2
Laser-induced Damage Probability at 1.06 microm and 0.69 microm
Autor: M, Bass, H H, Barrett
Publikováno v: Applied optics. 12(4)
The first directly comparable measurements of the laser-induced surface damage process at both ruby and Nd:YAG laser wavelengths are reported. The most striking feature of the data is that all the materials studied are harder to damage at 0.69 microm
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::5cd922bdd67176ce9b9cda33c2aca60f
https://pubmed.ncbi.nlm.nih.gov/20125375
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6
Ideal-observer performance under signal and background uncertainty
Autor: S, Park, M A, Kupinski, E, Clarkson, H H, Barrett
Publikováno v: Information processing in medical imaging : proceedings of the ... conference. 18
We use the performance of the Bayesian ideal observer as a figure of merit for hardware optimization because this observer makes optimal use of signal-detection information. Due to the high dimensionality of certain integrals that need to be evaluate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::42e9c2fcd292724573052a58687e5fcc
https://pubmed.ncbi.nlm.nih.gov/15344470
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8
A stationary hemispherical SPECT imager for three-dimensional brain imaging
Autor: R K, Rowe, J N, Aarsvold, H H, Barrett, J C, Chen, W P, Klein, B A, Moore, I W, Pang, D D, Patton, T A, White
Publikováno v: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. 34(3)
A completely stationary, hemispherical-coded aperture SPECT imaging system was designed to produce three-dimensional images of the brain. The system consisted of a hemispherical multiple-pinhole coded aperture and 20 small (100 x 100 mm crystal area)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::2808ae7dcb09d6773e55f083f410bb43
https://pubmed.ncbi.nlm.nih.gov/8441043
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9
Comparison of NaI(T1), CdTe, and HgI2 surgical probes: effect of scatter compensation on probe performance
Autor: D P, Kwo, H B, Barber, H H, Barrett, T S, Hickernell, J M, Woolfenden
Publikováno v: Medical physics. 18(3)
Spatial variation in the background source distribution makes tumor detection difficult for single-detector probes. Using a single energy window that brackets the photopeak helps discriminate against background events dominated by Compton scattering.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::7fd12d3fcf479b27f58a9a732f95ee83
https://pubmed.ncbi.nlm.nih.gov/1870479
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10
Comparison of NaI(Tl), CdTe, and HgI2 surgical probes: physical characterization
Autor: H B, Barber, H H, Barrett, T S, Hickernell, D P, Kwo, J M, Woolfenden, G, Entine, C, Ortale Baccash
Publikováno v: Medical physics. 18(3)
The physical properties of three surgical probes containing different radiation detectors are compared: a NaI(Tl) scintillator with a flexible, fiber-optic light guide, and two semiconductor detectors that operate at room temperature, CdTe and HgI2.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::85fddbbc46c2bbbba5297a9476e5f3fc
https://pubmed.ncbi.nlm.nih.gov/1870478
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