Results 31 to 40 of about 534,367 (396)
World Journal of Nuclear Medicine, 2019 Crossed cerebellar diaschisis (CCD) represents the reduction of blood flow, metabolism, and oxygen consumption in the cerebellar hemisphere contralateral to a cerebral focal lesion.
Dimitrios Priftakis +2 more
doaj +1 more source
Frontiers in Neuroscience, 2022 The development of novel PET imaging agents for synaptic vesicle glycoprotein 2A (SV2A) allowed for the in vivo detection of synaptic density changes, which are correlated with the progression and severity of a variety of neuropsychiatric diseases. While
Takuya Toyonaga +6 more
doaj +1 more source
Finite quantum tomography via semidefinite programming [PDF]
International Journal of Theoretical Physics, Vol. 46, No. 6, June
2007, page 1471, 2007 Using the the convex semidefinite programming method and superoperator formalism we obtain the finite quantum tomography of some mixed quantum states such as: qudit tomography, N-qubit tomography, phase tomography and coherent spin state tomography, where that obtained results are in agreement with those of References \cite{schack,Pegg,Barnett,Buzek ...
arxiv +1 more source
Diagnostics, 2023 The performances of photomultiplier tube (PMT)-based dedicated breast positron emission tomography (PET) and silicon photomultiplier tube (SiPM)-based time-of-flight (TOF) PET, which is applicable not only to breast imaging but also to head imaging, were
Yoko Satoh +9 more
doaj +1 more source
Perspectives for Positron Emission Tomography with RPCs [PDF]
, 2002 In this study we address the feasibility and main properties of a positron emission tomograph (PET) based on RPCs. The concept, making use of the converter-plate principle, takes advantage of the intrinsic layered structure of RPCs and its simple and ...
A. Blanco +21 more
core +2 more sources
Universal quantum data compression via gentle tomography [PDF]
Phys. Rev. A 73, 032336 (2006), 2004 Quantum state tomography--the practice of estimating a quantum state by performing measurements on it--is useful in a variety of contexts. We introduce "gentle tomography" as a version of tomography that preserves the measured quantum data. As an application of gentle tomography, we describe a simple polynomial-time method for universal source coding.
arxiv +1 more source
Frontiers in Oncology, 2022 PurposeTo determine an optimal setting for functional contouring and quantification of prostate cancer lesions with minimal variation by evaluating metabolic parameters on 18F-PSMA-1007 PET/CT measured by threshold-based and gradient-based methods under ...
Yu Ching Lau +4 more
doaj +1 more source
18F-AV-1451 tau PET imaging correlates strongly with tau neuropathology in MAPT mutation carriers [PDF]
, 2016 Tau positron emission tomography ligands provide the novel possibility to image tau pathology in vivo. However, little is known about how in vivo brain uptake of tau positron emission tomography ligands relates to tau aggregates observed post-mortem.
Englund, E. (Elisabet) +7 more
core +3 more sources
Quantum tomography with wavelet transform in Banach space on Homogeneous space [PDF]
Eeuopean Physical Journal B, 60, 193-201(2007), 2008 The intimate connection between the Banach space wavelet reconstruction method on homogeneous spaces with both singular and nonsingular vacuum vectors, and some of well known quantum tomographies, such as: Moyal-representation for a spin, discrete phase space tomography, tomography of a free particle, Homodyne tomography, phase space tomography and SU ...
arxiv +1 more source
Shadow process tomography of quantum channels [PDF]
Phys. Rev. A 107, 042403 (2023), 2021 Quantum process tomography is a critical capability for building quantum computers, enabling quantum networks, and understanding quantum sensors. Like quantum state tomography, the process tomography of an arbitrary quantum channel requires a number of measurements that scale exponentially in the number of quantum bits affected.
arxiv +1 more source