Color coding in lung perfusion
The following question has been sent by Dr. Zhaoyane, Jinling Hospital Nanjing, China:
Is the intensity of the color coding related to that of iodine in lung perfusion? Thanks!
Thorsten R.C. Johnson M.D., University Hospitals Grosshadern, Munich:
Of course, the intensity of the color is to represent the content of iodine in the respective area of the lung.
Keywords:
Thorsten R. C. Johnson, M.D:
Thanks for your reply, I want to ask another question: If we want to get good images, how to scan for lung perfusion. For exam, we must use 4ml/s?5ml/s…… injecting speed? or we use 70ml?80ml…… contrast material ?can we change two tube~s kv and mas?
best wishes to you!
In our experience, 4 ml/s is the preferable injection rate to avoid beam hardening artifacts. 70-80 ml should be adequate for typical asian body habitus and weight. You should not change the kV settings (which is not possible anyway except for special research protocols). You may want to increase the mAs for very heavy patients, but the preset value should work fine in general.