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霍恩斯菲尔德单位用于评估腰椎内骨矿物质密度分布及其临床值

Jiabao Chen1, Yanhong Li2, Han Zheng1

  • 1Department of Spinal Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China.

Frontiers in endocrinology
|June 28, 2024
PubMed
概括

腰椎骨矿物质密度 (BMD) 随着年龄的增长而下降,脊椎内分布不均. 霍恩斯菲尔德单位 (HU) 值对于评估腰部 BMD 和指导手术治疗至关重要.

关键词:
霍恩斯菲尔德的一个单位.骨矿物质密度分布的分布腰部手术 腰部手术 腰部手术腰椎 腰椎 腰椎 腰椎 腰椎骨质疏松症是一种骨质疏松症.骨质疏松性脊椎压缩骨折 骨质疏松性脊椎压缩骨折

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Crystal Density01:19

Crystal Density

The crystal lattice structure of a material allows us to determine how many molecules exist in its unit cell. With this information, alongside the unit-cell parameters - three distance parameters (a, b, c) and three angular parameters (α, β, γ).Density (ρ) = (Z × M) / (a × b × c × NA)where:Z is the number of formula units per unit cellM is the molar mass of the substancea, b, and c are the edge lengths of the unit cellNA is Avogadro’s numberFor a simple cubic lattice, atoms are located only at...