goodduck

ultrasound
[view]
-->pancreatic tumor, acute/chronic  pancreatitis,
[pros]
1. GB stone!
2. initial investgation for most patients "suspected" pancreatitis
[cons]
1. bowel gas, fat, and ascites limitation

CT
[view]
1.
-->pancreatic tumor, abscess, pseudocyst, calcification
[pros]
1.
2. dynamic CT for CTSI
3. spiral CT for rapid, clear, and negate artifact image

[cons]
1. hard to distingquish between inflammation and nepplasm

EUS
[view]
1. pancreatic duct and parenchyma
-->pancreatic calcification, CBD dilation, pseudocyst
[pros]
1. high-resolution
2. very good in "detecting" CBD stone 
3. can do biopsy !
4. replace "diagnostic" purpose of ERCP, and no post-ERCP pancraetitis
[cons]
1. sen/spe under study

MRCP
 [view]
  intra/extrahepatic bile duct, pancreatic duct
 [pros]
  noninvasive, non-contrast-media, non-endoscopic procedure 
 [cons]
  can't stent, stone extration, and biopsy 

ERCP
 [view]

 [pros]

 [cons]
 5~20% post-ERCP pancreatitis