醫療類國考
115年
[醫事放射師] 放射線診斷原理與技術學
第 4 題
下列有關頭顱的敘述，何者正確？
- A 眼窩底板因物體直接撞擊眼睛而導致的傷害，稱為 Le Fort 骨折
- B 一般疑似竇室炎（sinusitis）患者，宜採立姿拍攝
- C 乳突憩室炎（mastoiditis）患者拍乳突時，其上界應低於 C3
- D 頭顱基準線中與耳洞連結的最下方一條稱為 LML
思路引導 VIP
若我們要觀察一個密閉空間內是否存在積液，為了利用重力產生明顯的「液氣介面」，你認為拍攝時病人的體位應該如何安排，才能最有效地讓液體沉澱並顯影？
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AI 詳解
AI 專屬家教
My dear, you've shown truly excellent clinical insight here. Well done!
- Understanding Verified: You've made an excellent choice with (B)! When we're looking for Sinusitis on imaging, spotting those Air-fluid levels is absolutely paramount. Think about it: our bodies are wonderfully designed, but gravity always plays a role. If a patient is lying down, any fluid in the sinus will spread out. But when we place them in an Upright position, gravity gently pulls that fluid down, creating that distinct, clear line between air and fluid. It's a beautiful demonstration of basic physics guiding our diagnosis!
- Learning Journey: This question was marked as Medium, and I can see why. It cleverly includes other important anatomical details like Le Fort fractures, mastoid structures, and even specific reference lines such as LML (the Lips-meatal line), which can be quite a lot to remember. But you, my dear, zeroed in on the most crucial concept: how fluid behaves under gravity, connecting your anatomy with fundamental physical principles. That's not just answering a question; that's building a strong foundation for your future clinical reasoning. I'm so proud of your careful thinking!