肾上腺CT检查
用于检测和特征描述肾上腺结节、肿块和内分泌疾病的专门肾上腺成像。
~150-750 chest X-rays
什么是 CT Adrenal？
肾上腺CT是专门优化的成像研究，用于评估肾上腺结节、肿块和肾上腺病理。它包括平扫、增强和延迟成像，根据密度和洗脱特征特征描述肾上腺病变。
工作原理： 肾上腺CT首先进行平扫图像测量基线密度（亨氏单位）。然后注射造影剂，在60-70秒（门静脉期）和10-15分钟延迟成像。根据衰减值和洗脱百分比，病变被分类为富含脂质（低密度）或乏脂质。
CT Adrenal 的常见用途
肾上腺偶发瘤特征描述
Characterize incidentally discovered adrenal nodules. Distinguish adenomas (benign) from metastases, adrenocortical carcinoma, or pheochromocytoma. Use non-contrast density and washout characteristics to determine if lesion is benign.
肾上腺转移评估
Detect adrenal metastases in patients with known malignancy (lung, breast, renal, melanoma). Differentiate metastases from benign adenomas using density and washout characteristics. Assess bilateral involvement and size.
肾上腺皮质癌评估
Evaluate large adrenal masses suggestive of adrenocortical carcinoma. Assess tumor size, invasion into surrounding structures, vascular invasion, and metastatic spread. Guide surgical planning and staging.
嗜铬细胞瘤检测
Detect pheochromocytomas in patients with symptoms of catecholamine excess (hypertension, palpitations, sweating). Characterize tumor size, location, and relationship to vessels. Assess for extra-adrenal paragangliomas.
肾上腺增生评估
Assess adrenal gland enlargement in Cushing syndrome, congenital adrenal hyperplasia, or hyperaldosteronism. Evaluate gland morphology, detect nodular hyperplasia, and guide medical vs surgical management.
治疗后监测
Monitor adrenal lesions after treatment (surgery, ablation, medical therapy). Detect recurrence. Assess treatment response. Compare with prior studies to assess stability.
优势
- ✓肾上腺评估的空间分辨率高
- ✓可根据密度和洗脱特征描述病变
- ✓快速获取
- ✓广泛可用
- ✓检测钙化和脂肪效果优异
- ✓适合手术规划
- ✓可同时评估肾脏和肝脏
- ✓比MRI更具成本效益
局限性
- ⚠需要含碘造影剂（洗脱特征描述）
- ⚠辐射暴露
- ⚠某些病变的软组织特征描述有限
- ⚠可能遗漏非常小的转移
- ⚠不确定病变可能需要MRI或活检
- ⚠患者运动可能降低图像质量
- ⚠可能对比剂过敏
- ⚠肾功能受损可能限制对比剂使用
- ⚠功能性肿瘤的特征描述有限
检查准备清单
已完成 0/11 项
⚖️CT Adrenal vs MRI 对比
| 比较项目 | CT Adrenal | MRI |
|---|---|---|
| 速度 | Fast | Moderate |
| 辐射 | Yes | Yes |
| 软组织细节 | Good | Excellent |
| 费用 | Medium | High |
相关影像方式
MRI provides excellent soft tissue characterization without radiation. PET-CT with FDG or specific tracers (e.g., FDOPA for pheochromocytoma) is useful for indeterminate lesions. Ultrasound is operator-dependent but useful for some adrenal lesions. Nuclear medicine studies (MIBG) detect pheochromocytoma and neuroblastoma.
MRI
MRI uses powerful magnets and radio waves to produce detailed images of organs and soft tissues. Excellent for brain, spine, and joint imaging.
PET-CT
Combines metabolic imaging with CT anatomy for cancer staging and therapy response.
Ultrasound
Ultrasound uses sound waves to create real-time images. Commonly used for pregnancy monitoring and examining organs like the heart, liver, and kidneys.
浏览 CT Adrenal 术语
探索 CT Adrenal 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.
该影像方式暂无术语。
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医学参考资料
本页面内容参考以下权威医学机构的资料：
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- 3.