超声成像
超声使用声波创建实时图像。通常用于妊娠监测和检查心脏、肝脏和肾脏等器官。
什么是 Ultrasound？
超声成像，也称为超声检查，使用高频声波产生体内结构的图像。它完全无创、安全，并且不使用电离辐射，使其成为监测妊娠和检查器官的理想选择。
工作原理： 在涂抹凝胶后，将一个称为探头的小型手持设备按压在您的皮肤上。探头将声波发送到您的体内并捕捉反弹回来的回声。这些回声被处理以在监视器上创建实时移动图像。
Ultrasound 的常见用途
妊娠和胎儿发育
Monitor baby's growth, check fetal heartbeat, and estimate due date
腹部器官检查
Evaluate liver, gallbladder, pancreas, kidneys, and spleen
心脏评估（超声心动图）
Examine heart structure, valve function, and blood flow
血管成像（多普勒超声）
Assess blood flow in arteries and veins, detect clots
肌肉骨骼评估
Examine tendons, muscles, ligaments, and joints
盆腔与妇科检查
Characterize ovarian cysts, uterine fibroids, and adnexal masses
血栓筛查
Detect lower-extremity DVT with compression ultrasound
乳腺成像
Distinguish between fluid-filled cysts and solid masses
优势
- ✓实时成像允许可视化运动和血流
- ✓无辐射暴露 - 对孕妇完全安全
- ✓无创且无痛
- ✓便携式，可在床边进行
- ✓与CT或MRI相比相对便宜
- ✓通常不需要特殊准备
局限性
- ⚠图像质量取决于操作员技能和患者体型
- ⚠通过骨骼和空气的穿透有限
- ⚠对于某些情况可能不如CT或MRI提供那么多细节
- ⚠难以为肥胖患者成像
- ⚠无法通过气体或空气囊成像
检查准备与流程
检查前
准备因检查类型而异。对于腹部超声，您可能需要禁食8-12小时。对于盆腔超声，您可能需要膀胱充盈。穿舒适、宽松的衣服。
检查中
躺在检查台上，将凝胶涂抹在您的皮肤上。技术人员在被检查区域上移动探头。您可能会被要求改变姿势或短暂憋气。
检查后
擦去凝胶，您可以立即恢复正常活动。结果通常在24-48小时内可用。
相关影像方式
For more detailed imaging, CT or MRI may be recommended. Doppler ultrasound can assess blood flow. 3D/4D ultrasound provides enhanced visualization during pregnancy.
CT
CT scans use X-rays to create detailed cross-sectional images of the body. They are particularly useful for detecting bone fractures, tumors, and internal bleeding.
MRI
MRI uses powerful magnets and radio waves to produce detailed images of organs and soft tissues. Excellent for brain, spine, and joint imaging.
浏览 Ultrasound 术语
探索 Ultrasound 报告中的常见术语，每个术语都包含详细解释、临床意义和相关化验，帮助你读懂影像结果。 化验项目.
Lower Extremity DVT
Non-compressible vein with intraluminal echogenic thrombus; absent or reduced Doppler flow.
Hepatic Steatosis (Fatty Liver)
Diffuse increased echogenicity with vascular blurring; liver brighter than renal cortex.
Gallbladder Polyp
Non-shadowing echogenic focus attached to gallbladder wall that does not move with position change.
Gallstones (Cholelithiasis)
Echogenic foci with posterior acoustic shadowing in gallbladder
Hydronephrosis
Dilated renal collecting system with anechoic calyces; cortical thinning in chronic cases.
Hepatic Cyst (Liver Cyst)
Round, anechoic (black) fluid-filled structure with thin walls and posterior acoustic enhancement
Simple Ovarian Cyst
Anechoic thin-walled cyst without septations or solid components; posterior acoustic enhancement.
Thyroid Nodule
Discrete lesion within thyroid gland, may be solid, cystic, or mixed
Uterine Fibroid (Leiomyoma)
Well-circumscribed hypoechoic mass with shadowing; may be submucosal, intramural, or subserosal.