临床核医学04 2消化系统8年制.pdf

临床医学八年制核医学教学课件 Digestive system 消化系统 中山大学附属第三医院 一、Gastrointestinal bleeding imaging Pr iple After I.V enjecion of 99mTc-RBC or 99mTc-Sc, abdominal large vessels and organs with abundant blood are developed. S e gastrointestinal wall with lower blood supply, it usually could not be seen. When active bleeding lesions appeared in gastrointestinal wall for various reasons, imaging agents could get into gastrointestinal tract from vascular rupture, formulating abnormal radioactive concentration images, which could locate the blutene chloaide. Imaging agents 99m • Tc-RBC 99m • Tc-Sc Indications ⑴Acute active gastrointestinal bleeding ⑵Chronic, intermittent gastrointestinal bleeding ⑶Angiorrhexis and traumatic bleeding Normal Image Interpretation 99mTc-RBC Normal Image Interpretation Abnormal Image Interpretation Abnormal Image Interpretation 二、Ectopic gastric mucosa imaging Ectopic gastric mucosa Barrett’s Meckel enteric esophagus diverticulum duplication Meckel Diverticulum 99mTcO4- Enteric Duplication 99mTcO4- 三、Salivary gland imaging • Imaging agent: 99mTcO4- 。 • Indications: ⑴Functional evaluation of salivary gland, mainly for diagnosis of Sjogren syndrome, residual salivary gland after operation, and trans ntation of salivary gland ⑵Diagnosis of space-occupying lesions, such as Warthin tumor Normal Image Interpretation Clinical Applications A. normal B,C,D. Sjogren syndrome 四、Urea breath test Indications: ⑴Diagnosis of HP infection and auxiliary diagnosis for gastrointestinal disease ⑵Patients with acute and chronic gastritis and ga