Purpose: This paper evaluates the mechanical parameters for three dimensions PTW automatic water phantom system (MP3-S) and its computer controlled measuring system (MEPHYSTO software version 7.3). Material and Methods: This study compares the scanning overall speed using the PTW water phantom and PTW MEPHYSTO software at different levels of overall speed 5, 10, 15, 20,30, 40, and 50mm/sec. The...

For reasons of phantom material reproducibility, the absorbed dose protocols of the American Association of Physicists in Medicine (AAPM) (TG-51) and the International Atomic Energy Agency (IAEA) (TRS-398) have made the use of liquid water as a phantom material for reference dosimetry mandatory. In this work we provide a formal framework for the measurement of absorbed dose to water using ioniz...

The time-dependent $CP$ asymmetries of $B^0\to \pi^+\pi^-$ and $B^0_\mathrm{s}\!\to K^+K^-$ decays are measured using a data sample $pp$ collisions corresponding to an integrated luminosity 1.9 fb$^{-1}$, collected with the LHCb detector at centre-of-mass energy 13 TeV. results \begin{eqnarray*} C_{\pi\pi} & = -0.311 \pm 0.045 0.015, \\ S_{\pi\pi} -0.706 0.042 0.013, C_{KK} \phantom{-}0.164 0.0...

Introduction: The head scatter factor (Sc) is important to measurements radiation beam and beam modeling of treatment planning systems used for advanced radiation therapy techniques. This study aimed to investigate the design of a mini-phantom to measurement variations in collimator Sc in the presence of shielding blocks for shaping the beam using different field sizes. <str...

We present measurements of spin-orbit torques generated by Ir as a function film thickness in sputtered Ir/CoFeB and Ir/Co samples. find that provides dampinglike component torque with maximum spin-torque conductivity $\phantom{\rule{0.28em}{0ex}}{\ensuremath{\sigma}}_{\mathrm{DL}}^{\mathrm{eff}}=(1.4\phantom{\rule{0.28em}{0ex}}\ifmmode\pm\else\textpm\fi{}\phantom{\rule{0.28em}{0ex}}0.1)\ifmmod...

background: photon attenuation as an inevitable physical phenomenon influences on the diagnostic information of spect images and results to errors in accuracy of quantitative measurements. this can be corrected via different physical or mathematical approaches. as the correction equation in mathematical approaches is nonlinear, in this study a new method of linearization called ‘piece wise line...

Background Phase contrast (PC) MR flow measurements are affected by phase offset errors due to local eddy currents. Performing error correction using an MR phantom prolongs each CMR study and can impede scanner workflow. Recently, a novel post-hoc nonlinear self-calibrated PC correction algorithm has been developed that can be applied to PC flow data, with equivalence to phantom correction and ...