Stuart Mirell | University of California, Los Angeles (original) (raw)
Papers by Stuart Mirell
Physical Review A, Jan 30, 2002
A locally real representation is derived from projections in Hilbert space without arbitrary cons... more A locally real representation is derived from projections in Hilbert space without arbitrary constants. The inherent enhancement property of the resultant states removes restriction by Bell's theorem. Exact agreement with quantum mechanics is demonstrated by explicit calculations of photon transmission in Malus's law, joint detection probability for correlated photons, spin 1/2 particle transmission through successive Stern-Gerlach analyzers, and joint detection probability for correlated spin 1/2 particles. The representation is experimentally testable with respect to quantum mechanics.
Physical Review A, Jul 1, 1994
PubMed, Oct 1, 1981
Dynamic transverse axial wall tomograms of the left ventricle (LV) are reconstructed by a new tec... more Dynamic transverse axial wall tomograms of the left ventricle (LV) are reconstructed by a new technique from anterior and LAO views acquired with a conventional scintillation camera imaging the distribution of in-vivo Tc-99m-labeled red blood cells. By confining reconstruction to the singular contiguous uniform concentration of activity in the LV, the requisite angular samplings for a given level of accuracy are substantially reduced in this restricted form of emission computed tomography (ECT). Static phantom studies using a series of volumes having various cross-sectional dimensions demonstrate tomographic edge reconstruction with less than or equal to 12% rms radial error. The dynamic cardiac ECT is demonstrated in a series of representative patient studies by reconstruction of wall tomograms in the end-diastolic and end-systolic phases of the 28-frame cardiac cycle. In contrast to the conventional dual multiframe projection views, the motion tomograms derived from the reconstructions clearly show the complete three-dimensional perspective of wall displacement.
PubMed, 1978
A computerized edge-detection method was developed to obtain radionuclide ventriculograms for ana... more A computerized edge-detection method was developed to obtain radionuclide ventriculograms for analysis of left-ventricular ejection fraction and segmental wall motion from first-pass studies following i.v. injection of radionuclide. The accuracy of this technique was examined in 21 patients undergoing cardiac catheterization. Tc-99m DTPA was injected into an antecubital vein, with data acquisition in the 30 degrees RAO projection by a gamma scintillation camera interfaced to a computer. A computerized profile analysis was used to determine objectively the edge of the left-ventricular blood pool. Time-activity curves were generated, and the ejection fraction was calculated from sequential end-diastolic and end-systolic count rates. The values for ejection fraction correlated well with those obtained by single-plane contrast ventriculography (r = 0.95). End-diastolic and end-systolic images were reconstructed from the time-activity curve. To analyze segmental wall motion, the left-ventricular outline was divided into five segments and the motion of each segment was graded qualitatively from 1 to 5. Seventy-five of 105 segments had the same grade as the wall motion determined by contrast angiography, and 102 of 105 were within one grade. (P less than 0.001). These findings demonstrate the accuracy of this improved technique for objective, rapid, and noninvasive determination of left-ventricular function.
Clinical Nuclear Medicine, Sep 1, 1984
Clinical Nuclear Medicine, May 1, 1983
Journal of Modern Physics, 2013
arXiv (Cornell University), Jul 4, 2023
arXiv (Cornell University), Jun 4, 2022
arXiv (Cornell University), Jul 7, 2011
arXiv (Cornell University), Sep 4, 2005
We test for evidence violating the duality invariant ratio of photon beam irradiance and wave int... more We test for evidence violating the duality invariant ratio of photon beam irradiance and wave intensity. Split beams from a 633 nm HeNe laser are intersected at a diffraction grating complementary to the resultant interference pattern. An output beam from the grating, depleted in irradiance relative to wave intensity from the perspective of local realism, is transiently intersected with a beam from an independent HeNe laser and measured irradiance is amplified by ~4% in conflict with quantum mechanics.
arXiv (Cornell University), Nov 16, 1999
A new method for high efficiency interaction-free measurement is presented. Selective transmissio... more A new method for high efficiency interaction-free measurement is presented. Selective transmission of multiple beam interference is used to generate a continuous wave target beam with an irradiance level ~1% that of a reference beam. When the target beam is unobstructed by a potentially interposed object, the resultant measured interference visibility of 0.86 with the reference beam significantly exceeds the classically predicted irradiance-based visibility of 0.17 and provides a methodology for ~100% interaction-free measurement with a continuous wave beam.
The Journal of Nuclear Medicine, Oct 1, 1981
ABSTRACT
La presente invention se rapporte a une radiation (10) a double modulation dont l'irradiance,... more La presente invention se rapporte a une radiation (10) a double modulation dont l'irradiance, l'intensite d'onde ou les deux varient par rapport aux niveaux ordinairement equivalents, soit pour fournir une radiation enrichie ou diminuee d'energie, soit pour coder un signal d'informations. Diverses techniques sont presentees pour restaurer les niveaux d'irradiance a des niveaux 'ordinaires' ou pour amplifier l'irradiance sans affecter l'intensite de l'onde. L'invention presente egalement un systeme de communication employant la radiation a double modulation.
Diffraction orders in the continuous wave regime generated by a Ronchi transmission grating in a ... more Diffraction orders in the continuous wave regime generated by a Ronchi transmission grating in a standard threshold configuration are shown theoretically to violate quantum duality for a locally real representation. The phenomenon superficially resembles Rayleigh anomalies but is notably distinguished from those anomalies by a prediction of probability non-conservation. This prediction is experimentally tested with a 633 nm laser beam
Physical Review A, Jan 30, 2002
A locally real representation is derived from projections in Hilbert space without arbitrary cons... more A locally real representation is derived from projections in Hilbert space without arbitrary constants. The inherent enhancement property of the resultant states removes restriction by Bell's theorem. Exact agreement with quantum mechanics is demonstrated by explicit calculations of photon transmission in Malus's law, joint detection probability for correlated photons, spin 1/2 particle transmission through successive Stern-Gerlach analyzers, and joint detection probability for correlated spin 1/2 particles. The representation is experimentally testable with respect to quantum mechanics.
Physical Review A, Jul 1, 1994
PubMed, Oct 1, 1981
Dynamic transverse axial wall tomograms of the left ventricle (LV) are reconstructed by a new tec... more Dynamic transverse axial wall tomograms of the left ventricle (LV) are reconstructed by a new technique from anterior and LAO views acquired with a conventional scintillation camera imaging the distribution of in-vivo Tc-99m-labeled red blood cells. By confining reconstruction to the singular contiguous uniform concentration of activity in the LV, the requisite angular samplings for a given level of accuracy are substantially reduced in this restricted form of emission computed tomography (ECT). Static phantom studies using a series of volumes having various cross-sectional dimensions demonstrate tomographic edge reconstruction with less than or equal to 12% rms radial error. The dynamic cardiac ECT is demonstrated in a series of representative patient studies by reconstruction of wall tomograms in the end-diastolic and end-systolic phases of the 28-frame cardiac cycle. In contrast to the conventional dual multiframe projection views, the motion tomograms derived from the reconstructions clearly show the complete three-dimensional perspective of wall displacement.
PubMed, 1978
A computerized edge-detection method was developed to obtain radionuclide ventriculograms for ana... more A computerized edge-detection method was developed to obtain radionuclide ventriculograms for analysis of left-ventricular ejection fraction and segmental wall motion from first-pass studies following i.v. injection of radionuclide. The accuracy of this technique was examined in 21 patients undergoing cardiac catheterization. Tc-99m DTPA was injected into an antecubital vein, with data acquisition in the 30 degrees RAO projection by a gamma scintillation camera interfaced to a computer. A computerized profile analysis was used to determine objectively the edge of the left-ventricular blood pool. Time-activity curves were generated, and the ejection fraction was calculated from sequential end-diastolic and end-systolic count rates. The values for ejection fraction correlated well with those obtained by single-plane contrast ventriculography (r = 0.95). End-diastolic and end-systolic images were reconstructed from the time-activity curve. To analyze segmental wall motion, the left-ventricular outline was divided into five segments and the motion of each segment was graded qualitatively from 1 to 5. Seventy-five of 105 segments had the same grade as the wall motion determined by contrast angiography, and 102 of 105 were within one grade. (P less than 0.001). These findings demonstrate the accuracy of this improved technique for objective, rapid, and noninvasive determination of left-ventricular function.
Clinical Nuclear Medicine, Sep 1, 1984
Clinical Nuclear Medicine, May 1, 1983
Journal of Modern Physics, 2013
arXiv (Cornell University), Jul 4, 2023
arXiv (Cornell University), Jun 4, 2022
arXiv (Cornell University), Jul 7, 2011
arXiv (Cornell University), Sep 4, 2005
We test for evidence violating the duality invariant ratio of photon beam irradiance and wave int... more We test for evidence violating the duality invariant ratio of photon beam irradiance and wave intensity. Split beams from a 633 nm HeNe laser are intersected at a diffraction grating complementary to the resultant interference pattern. An output beam from the grating, depleted in irradiance relative to wave intensity from the perspective of local realism, is transiently intersected with a beam from an independent HeNe laser and measured irradiance is amplified by ~4% in conflict with quantum mechanics.
arXiv (Cornell University), Nov 16, 1999
A new method for high efficiency interaction-free measurement is presented. Selective transmissio... more A new method for high efficiency interaction-free measurement is presented. Selective transmission of multiple beam interference is used to generate a continuous wave target beam with an irradiance level ~1% that of a reference beam. When the target beam is unobstructed by a potentially interposed object, the resultant measured interference visibility of 0.86 with the reference beam significantly exceeds the classically predicted irradiance-based visibility of 0.17 and provides a methodology for ~100% interaction-free measurement with a continuous wave beam.
The Journal of Nuclear Medicine, Oct 1, 1981
ABSTRACT
La presente invention se rapporte a une radiation (10) a double modulation dont l'irradiance,... more La presente invention se rapporte a une radiation (10) a double modulation dont l'irradiance, l'intensite d'onde ou les deux varient par rapport aux niveaux ordinairement equivalents, soit pour fournir une radiation enrichie ou diminuee d'energie, soit pour coder un signal d'informations. Diverses techniques sont presentees pour restaurer les niveaux d'irradiance a des niveaux 'ordinaires' ou pour amplifier l'irradiance sans affecter l'intensite de l'onde. L'invention presente egalement un systeme de communication employant la radiation a double modulation.
Diffraction orders in the continuous wave regime generated by a Ronchi transmission grating in a ... more Diffraction orders in the continuous wave regime generated by a Ronchi transmission grating in a standard threshold configuration are shown theoretically to violate quantum duality for a locally real representation. The phenomenon superficially resembles Rayleigh anomalies but is notably distinguished from those anomalies by a prediction of probability non-conservation. This prediction is experimentally tested with a 633 nm laser beam