29. …A study using Tl-201 imaging demonstrated a lower sensitivity for single vessel
disease in women than men…This lower sensitivity for single vessel disease in women may
be related to a generally small chamber size in female patients than in males.
一些研究發現,使用Tl-201進行myocardial perfusion SPET
時,在大部分女性或心臟體積較小的受檢者身上,往往會因為「靈
敏度」受到影像品質與受限的放大倍率等因素影響,導致在「單條
冠狀動脈血管疾病(SVD)」的偵檢上,發生偽陰性(false
negative)的情形。
CONSENSUSSTATEMENTAMERICANSOCIETYOFNUCLEARCARDIOLOGY:
TASKFORCEONWOMENANDCORONARYARTERYDISEASE.
THEROLEOFMYOCARDIALPERFUSIONIMAGINGINTHECLINICALEVALUATIONOFCORONARYARTERYDISEASEINWOMEN
MPI常用的核醫藥物與特性
30. …using Tc-99m sestaMIBI and pharmacologic stress has demonstrated a high
sensitivity but a moderate specificity…The reduced specificity may be related to soft
tissue attenuation from breast.
…因為影像品質與可放大倍率的關係,使用Tc-99m sestamibi
可以明顯的增進myocardial perfusion SPET的「靈敏度」,但是
相對會因胸壁或是乳房等軟組織衰減,造成「特異性」減少。
CONSENSUSSTATEMENTAMERICANSOCIETYOFNUCLEARCARDIOLOGY:
TASKFORCEONWOMENANDCORONARYARTERYDISEASE.
THEROLEOFMYOCARDIALPERFUSIONIMAGINGINTHECLINICALEVALUATIONOFCORONARYARTERYDISEASEINWOMEN
MPI常用的核醫藥物與特性
58. 短軸 short axis
水平長軸 Horizontal long axis
垂直長軸 Vertical long axis
•經由ECT造影技術,我們可以得到左心室的三個主要軸向
的影像資訊。
MP SPET的造影技術與結果
MPI的ECT斷層影像
59. 水平長軸 Horizontal long axis:
自心尖(apex)/末端(distal)至心基(basal)/近端
(proximal)的胸隔側(septum)與外側(Lateral)的藥物
分佈資訊。
60. 短軸 short axis
水平長軸 Horizontal long axis
垂直長軸 Vertical long axis
•經由ECT造影技術,我們可以得到左心室的三個主要軸向
的影像資訊。
MP SPET的造影技術與結果
MPI的ECT斷層影像
61. 垂直長軸 Vertical long axis:
自心尖(apex)/末端(distal)至心基(basal)/近端
(proximal)的上壁(Ant.Wall)與下壁(Inf.Wall)的藥物分佈
資訊,臨床上為了配合醫師的閱片習慣,我們往往會將這個軸
向的序列影像以水平方式(與解剖方向不同)排列。
62. 欲以MP SPET評估心臟功能的好壞,可參考影像結果:
1.灌注分佈狀況 -slices、global display on polar map or 3D method
2.左心室射血功能 -LV Ejection fraction of flow (Gated)
3.左心室壁運動情形 -2D or 3D plot or cine (Gated)
MP SPET的結果評估:
MP SPET的造影技術與結果
104. The Society of Nuclear Medicine's 2006 Image of the Year is "a beautiful fusion image of a 64-slice CT with
SPECT," noted Dr. Henry Wagner, who selected the Zurich University study that was given the award.
Images courtesy of Drs. Oliver Gaemperli and Philipp Kaufmann, University Hospital Zurich, Switzerland.
The images show a SPECT/CT fusion of the anterior and posterior heart and
its coronary arteries obtained by 64-slice CTA with the functional information
about the corresponding perfusion from cardiac SPECT (represented by the
orange and yellow colors) superimposed.
FAIM: NM miz 64sCT
◇ AC correction & FAIM
121. A difficult-to-image female patient, 5 ft tall and 276 lbs,
underwent conventional cardiac SPECT 10.6 minutes (top row)
followed by CZT-based SPECT 3.3 minutes(CardiArc) (bottom row).
-SNM 2006 DEMO
◇ O t h e r s