Figure 1.

The general schema and concepts for catheter-based ultrasound devices for MR guided ablation or hyperthermia of pancreas tumors. (a) Interstitial transgastric applicator as inserted via an endoscope into a pancreatic tumor, similar to endoscopic biopsy. Similarly, an intraluminal applicator can be inserted directly into the pancreatic duct. (b) Larger endoluminal device positioned with the stomach or duodenum with acoustic energy directed toward tumor target.