title: [Dual-source dual-energy computed tomography imaging of acute necrotizing pancreatitis--Preliminary study].
abstract: OBJECTIVE
  To investigate the clinical value of dual-source computed tomography dual-energy technology in the imaging diagnosis of acute necrotizing pancreatitis.
  
  
  METHODS
  Thirty-two cases with diagnosed acute necrotizing pancreatitis and underwent contrast-enhanced dual-source dual-energy CT in portal venous phase were retrospectively analyzed. Difference of CT value between pancreatic parenchyma and necrosis, contrast to noise ratio of pancreatic parenchyma-to-necrosis and score of subjective diagnosis were measured, calculated and assessed on CT images of 80 kV, 140 kV and weighted-average 120 kV.
  
  
  RESULTS
  The difference of CT value between pancreatic parenchyma and necrosis in the images of 80 kV, 140 kV and weighted-average 120 kV was (67.22 +/- 21.11) HU, (42.91 +/- 15.12) HU, (48.78 +/- 16.13) HU; contrast to noise ratio of pancreatic parenchyma-to-necrosis in the images of each group was 8.35 +/- 3.63, 5.89 +/- 2.67, 7.72 +/- 3.58; the score of subjective diagnosis in the images of each group was 3.87 +/- 0.34, 3.28 +/- 0.81, 3.56 +/- 0.67 respectively. Difference of CT value between pancreatic parenchyma and necrosis, contrast to noise ratio of pancreatic parenchyma-to-necrosis and score of subjective diagnosis were significantly different in three groups of images (P < 0.05). The three indexes at 80 kV were significantly higher than those of 140 kV and weighted-average 120 kV.
  
  
  CONCLUSIONS
  At portal venous phase dual-sourcedual-energy enhancement CT, the demonstration of pancreas necrosis is better than those at 80 kV, 140 kV and weighted-average 120 kV in the diagnosis of acute necrotizing pancreatitis.
authors: Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China.
authors: Yuan
authors: Y
authors: Yuan
authors: Zi-Xing
authors: ZX
authors: Huang
authors: Zhen-Lin
authors: ZL
authors: Li
authors: Song
authors: S
authors: Bin
authors: Li-Ping
authors: LP
authors: Deng
mesh_terms: D000328:Adult; D000368:Aged; D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019283:Pancreatitis, Acute Necrotizing / Q000000981:diagnostic imaging*; D011856:Radiographic Image Enhancement / Q000379:methods; D015900:Radiography, Dual-Energy Scanned Projection / Q000379:methods*; D012189:Retrospective Studies; D036542:Tomography, Spiral Computed / Q000379:methods*
chemical_list: D003287:Contrast Media