| 摘要: |
| ［目的］总结99Tcm-MDP骨显像中常见伪影的影像特点和成因。［方法］ 回顾性分析了6602例（次）99Tcm-MDP骨显像并识别其中伪影。［结果］ 278例次核素骨显像出现伪影。伪影可分为“热区”（局部异常放射性分布增强／浓聚，占88.5 %）或“冷区”（局部异常放射性分布稀疏／缺损，占11.5％）伪影。“热区”伪影为尿液（77.7％）或显像剂（10.8％）污染所致。“冷区”伪影由各种高密度异物衰减所致。［结论］充分认识伪影的影像特征及其成因有助于对伪影的识别。 |
| 关键词: 99Tcm-MDP 骨扫描 伪影 SPECT |
| DOI：10.11724/jdmu.2006.06.11 |
| 分类号:R817.4 |
| 基金项目: |
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| Identification and analysis of common artifacts in 99Tcm -MDP bone scan:report of 278 cases |
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XIE Jing-hui, ZHANG Xin, ZHANG Yan-jun, ZHU Yi, TAO Li, DU Xue-mei
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Department of Nuclear Medicine, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
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| Abstract: |
| ［Objective］To reveal the features and causes of artifacts in 99Tcm-MDP bone scan. ［Methods］ Six thousand six hundred and two 99Tcm-MDP bone scans were reviewed and artifacts were distinguished. ［Results］ Artifacts were found in 278 bone scans and could be divided into two groups: `hot' artifact (regional abnormal radionuclide accumulation，88.5%) or `cold' artifact (regional abnormal radionuclide defect, 11.5％). The `hot' a rtifacts were caused by urine (77.7%) or imaging agent stains (10.8%) and the `cold' artifacts by multifarious high density foreign matters. ［Conclusion］ To understand the features and causes of artifacts in 99Tcm-MDP bone scan is benefic to identify them. |
| Key words: 99Tcm-MDP bone scan artifact SPECT |
