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atrial_fibrillation_challenges.html

@@ -25,10 +25,16 @@ <h1>Atrial arrhythmia</h1>
 
 <img src="assets/img/jiyue/catheter_ablation.JPG" style="width: 300px;">
 
-<p>Here are some photos of the catheter ablation operating room.</p>
+<p>Here are some photos of the catheter ablation operating room. Thers is the patient table behind the glass where the physician operate the procedure. Technician work with the physician via the mapping system. The mapping system displays spatial and temporal data to help the physician find arrhythmia source locations.</p>
 
 <img src="assets/img/jiyue/operating_room.PNG" style="width: 1000px;">
 
+<p>Catheters are passed through a vein to reach the heart. They may be inserted in the groin, shoulder or neck. The 3D mapping system takes in electrograms from the catheters and creates colored maps to help the physician pinpoint the abnormal tissue. As illustrates in the figure below, there are ablations create a line of block to the abnormal activations from the pulmonary veins, and there is a cluster of ablations stop abnormal activations from a focal source.</p>
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+<img src="assets/img/jiyue/ablations.JPG" style="width: 1000px;">
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+<p></p>
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