1 / 16

成功大學醫學院 核子醫學科部

成功大學醫學院 核子醫學科部. 李碧芳 (Bi-Fang Lee). SPECT. Planar scintigraphy. Gamma Camera. Nuclear Brain Imaging. Clinical indication Cerebrovascular disease Epilepsy Dementia Brain death CSF flow dynamic study Other. Nuclear Brain Imaging. Conventional brain scan Cerebral perfusion SPECT PET

sonya-beck
Download Presentation

成功大學醫學院 核子醫學科部

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 成功大學醫學院核子醫學科部 李碧芳 (Bi-Fang Lee)

  2. SPECT Planar scintigraphy Gamma Camera

  3. Nuclear Brain Imaging • Clinical indication • Cerebrovascular disease • Epilepsy • Dementia • Brain death • CSF flow dynamic study • Other

  4. Nuclear Brain Imaging • Conventional brain scan • Cerebral perfusion SPECT • PET • CSF flow dynamic study • Dopamine receptor image

  5. Conventional brain scanTc-99m DTPA Brain death

  6. Conventional brain scanTc-99m DTPA Brain tumor

  7. Cerebral perfusion SPECTTc-99m HMPAO 典型的阿茲海默氏症，橫切面呈現雙側顳葉血流減少，連左側額葉也受影響。矢狀切片可 觀察到左側顳葉、頂葉灌流明顯減少，左額葉的放射活性亦降低。

  8. Cerebral perfusion SPECTTc-99m HMPAO 複雜性局部癲癇，MRI顯示右顳葉內側海馬迴硬化，發作間期(Interictal)的腦部血 流斷層造影顯示右顳葉下緣及內緣放射活性減低，而發作後半小時內(Postictal)的影像 可見顳葉內緣血流增加(箭頭處)。

  9. PET-MRI • 經放射治療後呈現異常顯影增強的病變，究竟是放射後壞死抑或是腫瘤復發？ 右顳葉膠質細胞瘤經手術併放射治療，二年後MRI追蹤檢查顯示局部異常顯影增強。 PET與MRI影像融合，可見MRI異常顯影處亦有強烈FDG聚集，意謂腫瘤復發。

  10. PET-正子造影腦部掃描 腦室寡樹突膠質母細胞瘤，經放射治療後追蹤。MRI見腫瘤萎縮，F-18-FDG PET並無異 常放射活性增高，然而在C-11-Acetate PET卻可觀察到原腫瘤遺跡有強烈放射活性聚集，意 謂腫瘤細胞仍存活，需進一步積極治療。

  11. CSF flow dynamic study • 腦脊液循環動態功能檢查(腦池顯像) 常壓性水腦。從腰椎穿刺注射後3~24小時可見持續性側腦室逆流。二十四小時後大部分 的 放射活性仍聚集在基底池和大腦側裂，未上升至大腦凸面並經由蜘蛛膜絨毛清除。

  12. CSF flow dynamic study • 腦脊液引流通暢檢查 正常情況下可見放射性藥劑注射入貯存池(短箭頭處)後，很快地延引流管流動， 一小時內 可見放射活性遍佈腹腔內。留意放射性藥物逆流回側腦室(長箭頭處)， 代表引流管近端亦屬通暢。

More Related