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相关概念视频

Indefinite Integrals01:25

Indefinite Integrals

235
The water inflow rate into a storage tank is not constant but increases over time. Initially, the pump delivers water at a rate of 5 L/min. However, the inflow rate increases by 2 L/min for each additional minute due to rising pressure or system adjustments. This scenario can be described mathematically by a linear function:It is necessary to integrate the inflow rate function to measure the total volume of water added to the tank over time. The total water volume V(t) is obtained by performing...
235

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相关实验视频

Updated: May 3, 2026

Cannula Implantation into the Cisterna Magna of Rodents
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孤立的大型水箱:伊朗东部的一项初步研究.

Masoud Pishjoo1, Mohammad Safdari2, Zohre Safdari3

  • 1Department of Neurosurgery, Shohada Hospital, Ghaen, South Khorasan, Iran.

Asian journal of neurosurgery
|June 9, 2025
PubMed
概括

巨型水瓶大 (MCM) 是一个常见的发现. 这项研究在92名没有精神问题的患者中发现了孤立的MCM,没有显著的年龄相关性,但直径的性别差异,并且仅在男性中发现了"巨大的MCM".

关键词:
计算机断层扫描扫描计算机断层扫描.巨大的水箱 马格纳 马格纳正常人口中的正常人群.这是正常变化的正常变化.这是一项初步研究的初步研究.

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科学领域:

  • 神经成像是一种神经成像.
  • 人体解剖学 解剖学 解剖学
  • 放射学 放射学是一门学科.

背景情况:

  • 孤立的超大水 (MCM) 是一个具有争论的临床意义的条件.
  • 以前的研究已经将MCM与精神疾病联系起来,但其在非精神病患者群体中的发病率不太清楚.
  • 这项研究侧重于没有精神伴随性疾病的患者的MCM,检查其与年龄和性别的关系.

研究的目的:

  • 为了确定一个非精神病患者队列中孤立的大型水大病 (MCM) 的发生率.
  • 调查MCM尺寸,患者年龄和性别之间的关系.
  • 为了确定孤立的MCM的潜在临床相关性.

主要方法:

  • 从1至80岁的轻微头部创伤,头痛或的患者进行了1,016次CT扫描的回顾性审查.
  • 测量两个垂直直径 (D1:前后,D2:横) 的MCM.
  • "巨大的MCM"的定义是D1>20毫米;年龄,性别和MCM维度之间的相关性分析.

主要成果:

  • 确定了92例MCM病例,平均年龄为35.31岁;没有发现显著的年龄-MCM关系.
  • 虽然D1没有显示性别差异,但D2在男性中明显大于女性 (p < 0.029).
  • "巨大的MCM" (D1>20毫米) 仅在18名男性中观察到 (p <0.035);D1和D2之间没有相关性.

结论:

  • 孤立的大型水 (MCM) 似乎是一种正常的解剖学变异,在一般人群中没有明显的临床意义.
  • 该研究强调了MCM横径 (D2) 的性别特异性差异,以及"巨大的MCM"在男性中独有的发生.
  • 需要进一步的研究来探索孤立的MCM和认知功能之间的潜在相关性,尽管目前的发现表明没有临床相关性.