相关实验视频

Updated: Jan 15, 2026

Experimental Model of Ligature-Induced Peri-Implantitis in Mice

Experimental Model of Ligature-Induced Peri-Implantitis in Mice

Published on: May 17, 2024

产后形态学发育和后的变异性:在日本人群中使用光子计数探测器计算断层扫描的分析

Hiroshi Sakaida¹, Yasutaka Ichikawa², Akio Yamazaki³

¹Department of Otorhinolaryngology-Head and Neck Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. hsakaida@med.mie-u.ac.jp.

Surgical and radiologic anatomy : SRA

|October 6, 2025

概括

在童年期间,后面道 (PC) 显著延长和缩小其与面部神经 (FN) 的距离,在第一年迅速增长. 这种发育窗口凸显了儿童耳部外科手术中需要高分辨率成像的需求.

科学领域:

耳鼻喉科耳鼻喉科耳鼻喉科
人体解剖学解剖学解剖学
医疗成像医学成像

背景情况:

后面的管 (PC) 是耳部外科手术的一个关键里程碑.
缺乏PC产后发育的体内定量数据.
光子计数检测器CT (PCD-CT) 提供超高的空间分辨率,用于详细的解剖分析.

研究的目的:

为了定量描述PC长度的体内出生后发育.
分析PC与面部神经 (FN) 的乳头部分的空间关系.
通过PCD-CT.在日本人口中确定这些参数的发育轨迹和变异性.

主要方法:

对128名日本患者 (年龄在0-59岁) 的骨PCD-CT扫描进行了回顾性分析.
使用多平面重建测量PC长度和PC-FN距离.
使用局部估计的散射图平滑 (LOESS) 分析与年龄相关的变化.

主要成果:

平均PC长度:8.31 ± 2.50毫米; 平均PC-FN距离:2.80 ± 0.74毫米.
PC长度逐渐增加,在20岁左右达到平原;PC-FN距离减少,在9岁左右稳定.
观察到显著的个体间变异性,特别是在儿科病例中;PC在14个儿科骨中无法识别.

结论:

这项研究提供了关于PC产后形态发生的第一个体内定量数据.
显著的PC延长和PC-FN距离缩小发生在儿童时期,为儿科耳科手术创造了一个"高风险窗口".
对于微解剖学研究来说,PCD-CT非常有价值,因为它强调了患者特定的手术规划的手术前成像.

关键词:

带 tympani 神经是一个神经.面部神经是什么意思光子计数探测器计算机断层扫描.在后面的canaliculus.

更多相关视频

Analysis of Craniomaxillofacial Malformations in Mice Using Three-dimensional Microcomputed Tomography

Analysis of Craniomaxillofacial Malformations in Mice Using Three-dimensional Microcomputed Tomography

Published on: January 17, 2025

In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint

In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint

Published on: March 7, 2014

相关概念视频

Imaging Studies III: Computed Tomography

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...

Computed Tomography

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...