為什麼低劑量電腦斷層檢查不需要打顯影劑？Why Low-Dose CT Scans Don't Require ?Contrast Agents

這段影片將解釋為什麼在低劑量電腦斷層（CT）檢查中通常不使用顯影劑。低劑量CT主要用於篩查早期肺癌和其他疾病，重點在於減少患者的輻射暴露。同時，低劑量CT的主要目的是檢測較大結構的異常，而不是需要顯影劑強化的細微血管或組織，因此通常不需要使用顯影劑。影片將深入探討低劑量CT的應用範圍、優勢及其與常規CT檢查的差異。


This video will explain why contrast agents are typically not used in low-dose CT scans. Low-dose CT is primarily used for early detection of lung cancer and other diseases, focusing on reducing radiation exposure for patients. The primary goal of low-dose CT is to detect abnormalities in larger structures, rather than subtle blood vessels or tissues that might require contrast enhancement. The video will explore the applications, advantages, and differences between low-dose CT and conventional CT scans.