Time-of-flightDiffractionForward physicsExclusive processesThe use of precise time-of-flight (ToF) detectors for measurements of diffractive and electromagnetic processes in proton–proton collisions is discussed. The performance of background rejection exploiting the ToF measurements of the forward protons ...
While the first time-of-flight (TOF)-positron emission tomography (PET) systems were already built in the early 1980s, limited clinical studies were acquired on these scanners. PET was still a research tool, and the available TOF-PET systems were experimental. Due to a combination of low sto...
Calculate (a) the vertical velocity after 1.0 s; (b) the velocity of the ball after 1.0 s; (c) the maximum height reached; (d) the time of flight; (e) the range of the ball. 4.3 Calculate the force between the Sun (m = 2.0 × 1030 kg) and the Earth (m = 5.98 × 1024 ...
1 Time-of-flight (TOF) data of the atomic cloud after release from the dipole trap. We plot \({\sigma }_{{\rm{x}}}\) (blue) and \({\sigma }_{{\rm{y}}}\) (yellow). We average the temperature \({T}_{{\rm{x}}}\) and \({T}_{{\rm{y}}}\) to determine the ...
Over the past five years, ultrafast high-frequency (HF) readout concepts have advanced the timing performance of silicon photomultipliers (SiPMs). The shown impact in time-of-flight (TOF) techniques can further push the limits in light detection and
ROI: Region-of-interest SC: Sulfur colloid SD: Stable disease SF: Surviving fraction SUV: Standardized uptake value TCP: Tumor control probability TLG: Total lesion glycolysis TN ratio: Tumor-to-normal tissue ratio TOF: Time of flight VOI: Volume-of-interest ...
To reduce aircraft development lead-time, Safran Engineering Services is specialized in quick design and engineering in full autonomy. Teams provide global loads for ground and flight maneuvers, follows the evolution of weight and center of gravity for a
为什么time-of-flight PET不可行?根据这个公式,要求检测器的精度达到0.067纳秒。目前电路是可以测量这个时间差,但使用ise time of light output from scintillator太慢了。这个time jitter似乎会有很大的影响。通过使用最快的闪烁体和电子元件的精妙结合,是可以实现在几百皮秒上的精度,但是这样只可以实现几厘米内的定位...
Fig. 2: Secondarily synchronous hawkmoth flight muscle exhibits delayed stretch activation, a hallmark of asynchronous flight. a, Intact, downstroke flight muscle (DLMs) fromM. sexta(n = 9 independent moths from the same source colonies, each sampled a single time) was mounted on an ergome...
Fluid-attenuated inversion recovery (FLAIR) sequences for the assessment of acute stroke : Inter observer and inter technique reproducibility BACKGROUND AND PURPOSE: Diffusion-weighted magnetic resonance (MR) imaging (DWI), and three-dimensional (3D) time-of-flight (TOF) MR angiography (MRA), are...