PURPOSE: 4D-PET/CT imaging is an excellent solution for reducing the breathing-induced effects in both CT and PET images.In 4D-PET/CT, 4D-CT images are selected to match those of 4D-PET phase by phase and the corresponding phases are used for attenuation correction in 4D-PET.However, the high radiation dose that patients acquire while undergoing 4D
H2S is a colorless and highly toxic gas with rotten eggs-like odor, which widely presents in coal derived gas, biogas, natural gas and other industrial gases.Besides corroding pipelines and poisoning downstream catalysts, it can also endanger human health, even trace amounts of H2S can cause people death.Moreover, when H2S is released into the air,
The blood brain barrier (BBB) maintains the homeostasis of the central nervous system (CNS) and protects the brain from toxic substances present in the circulating blood.However, the impermeability of the BBB to drugs is a hurdle for CNS drug development, which hinders the distribution of the most therapeutic Vacuum Belt molecules into the brain.Th
For shortcomings of poor exploaration and parameter complexities of the butterfly optimization algorithm, an improved butterfly optimization algorithm based the self-adaption Vacuum Belt method (SABOA) was proposed to extremely enhance the searching accuracy and the iteration capability.SABOA has advantages of having fewer parameters, the simple al