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--- intravascular_ultrasound [2025/07/01 13:52] – [Critical Appraisal] administrador
+++ intravascular_ultrasound [2025/07/01 13:57] (current) – administrador
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 {{rss>https://pubmed.ncbi.nlm.nih.gov/rss/search/1X7iXZ8T-NiaTi71cc7Jmpby7lETjknAuhLpVfFp4Muh7g_Usy/?limit=15&utm_campaign=pubmed-2&fc=20250701093758}}
+----
+----
+===== General Definition =====
+**Intravascular ultrasound (IVUS)** is an imaging technique that uses a miniature ultrasound probe on the tip of a catheter to visualize the **inside of blood vessels** from within the lumen.
+It produces **real-time, high-resolution cross-sectional images** of the vessel wall and lumen.
+===== Key Features =====
+  * **Imaging modality**: Ultrasound
+  * **Catheter-based**: Inserted through arterial or venous access
+  * **View**: Radial cross-section of the vessel
+  * **Provides visualization of**:
+    * Vessel lumen and wall
+    * Atherosclerotic plaques, dissections, or thrombi
+    * Venous sinus stenosis and dynamic collapse
+===== Clinical Applications =====
+  * **Coronary artery disease**
+    * Plaque characterization
+    * Stent sizing and deployment
+  * **Peripheral and cerebrovascular disease**
+  * **Idiopathic Intracranial Hypertension (IIH)**:
+    * Assessment of **venous sinus stenosis**
+    * Planning and optimization of **venous sinus stenting (VSS)**
+===== Advantages =====
+  * High spatial resolution
+  * Direct visualization of wall structure
+  * Useful in dynamic or complex lesions
+===== Limitations =====
+  * Invasive procedure
+  * Requires operator expertise
+  * Limited imaging in calcified or tortuous vessels
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