胰腺CT检查
用于检测和特征描述胰腺疾病的专门胰腺成像，包括胰腺炎和胰腺癌。
~400-750 chest X-rays
什么是 CT Pancreas？
胰腺CT是专门优化的成像研究，用于评估胰腺实质、胰管和胰周结构。它通常包括双期增强成像以最佳显示胰腺及其血管。
工作原理： 扫描分两期进行：胰腺期（造影后40-50秒）以获得最佳胰腺实质增强，门静脉期（70-80秒）用于静脉结构和肝转移。薄层图像允许详细评估胰腺和邻近结构。
CT Pancreas 的常见用途
胰腺癌检测与分期
Detect pancreatic adenocarcinoma, assess local extension, evaluate vascular involvement (SMA, SMV, portal vein), identify lymph node metastases, and detect distant metastases (liver, peritoneum). Determine resectability and guide surgical planning.
急性胰腺炎评估
Assess severity using CT Severity Index (CTSI). Detect pancreatic necrosis, peripancreatic fluid collections, pseudocysts, vascular complications, and organ failure. Guide management decisions (medical vs intervention). Identify underlying causes (gallstones, tumors).
胰腺囊肿特征描述
Distinguish between different types of pancreatic cysts including IPMN, MCN, SCN, and pseudocysts. Assess features suggesting malignancy such as wall thickening, nodules, and duct dilation.
神经内分泌肿瘤检测
Detect functioning (insulinoma, gastrinoma) and non-functioning pancreatic neuroendocrine tumors (PNETs). These tumors are typically hypervascular and best seen on arterial phase imaging. Assess tumor size, location, and metastases.
创伤评估
Identify pancreatic injuries in blunt or penetrating abdominal trauma. Detect lacerations, transection, contusion, and associated duodenal injuries. Grade injury severity and guide surgical vs conservative management.
术后评估
Evaluate after pancreatic surgery including Whipple procedure (pancreaticoduodenectomy), distal pancreatectomy, and central pancreatectomy. Detect anastomotic leaks, recurrence, fluid collections, and vascular complications.
优势
- ✓胰腺评估的空间分辨率高
- ✓评估血管受累效果优异
- ✓快速获取（几秒）
- ✓广泛可用
- ✓检测钙化效果优异（慢性胰腺炎）
- ✓适合手术规划
- ✓可同时评估肝脏和其他腹部器官
局限性
- ⚠需要含碘造影剂（肾功能不全可能禁忌）
- ⚠辐射暴露
- ⚠对小胰腺病变（<1cm）的敏感性低于MRI
- ⚠可能遗漏等密度胰腺癌
- ⚠与MRI相比软组织特征描述有限
- ⚠患者运动可能降低图像质量
- ⚠与MRI相比不适合囊肿特征描述
- ⚠可能对造影剂过敏
检查准备清单
已完成 0/11 项
⚖️CT Pancreas vs MRI 对比
| 比较项目 | CT Pancreas | 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 with pancreatic protocol provides superior soft tissue characterization and cyst evaluation. EUS allows for real-time imaging and tissue sampling. MRCP is excellent for evaluating the pancreatic duct. PET-CT may be used for staging and detecting metastases.
浏览 CT Pancreas 术语
探索 CT Pancreas 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.
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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：
- 1.
- 2.
- 3.