Contrast-enhancement ratio on multiphase enhanced computed tomography predicts recurrence of pancreatic neuroendocrine tumor after curative resection

Pancreatology ◽  
2016 ◽  
Vol 16 (3) ◽  
pp. 397-402 ◽  
Author(s):  
Takuma Arai ◽  
Akira Kobayashi ◽  
Yasunari Fujinaga ◽  
Takahide Yokoyama ◽  
Akira Shimizu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Neuroendocrine Tumor ◽  
Contrast Enhancement ◽  
Curative Resection ◽  
Pancreatic Neuroendocrine Tumor ◽  
Enhancement Ratio ◽  
Enhanced Computed Tomography

scholarly journals Diagnostic criteria for a “soft” pancreas and their influence on the occurrence of pancreatic fistula after pancreatoduodenal

2020 ◽  
Vol 25 (2) ◽  
pp. 113-123
Author(s):  
Yu. S. Galchina ◽  
G. G. Kаrmаzаnovsky ◽  
D. V. Kalinin ◽  
E. V. Kondratyev ◽  
D. S. Gorin ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pancreatic Fistula ◽  
Pancreatic Duct ◽  
Contrast Enhancement ◽  
Acinar Cells ◽  
Enhancement Ratio ◽  
Pancreatic Parenchyma ◽  
Duct Diameter ◽  
Clinically Significant ◽  
Parenchyma Enhancement

Purpose. Identification of the possibilities of contrast enhancement computed tomography in evaluated the number of the acinar structures in the pancreatic parenchyma at the preoperative stage to predict the development pancreatic fistula.Material and methods. In 2016–2019, 196 pancreatoduodenectomy were performed. 86 patients were retrospectively selected. Patients were divided into 2 groups: group 1 included 16 observations with the development of clinically significant pancreatic fistula, in 2 – 70 cases without complications. According to preoperative contrast enhancement computed tomography, structure of the pancreas, pancreatic parenchyma thickness, pancreatic duct diameter, the density of the pancreas in the native phase, relative parenchyma enhancement ratio, washout coefficient, pancreas stump volume were evaluated. According histological, the number of acinar and fat cells in the section of the removed pancreas was evaluated.Results. “Soft” structure of the pancreas (r = 0.374, p = 0.000), pancreatic parenchyma thickness (r = 0.549, p = 0.000), the density of the pancreas in the native phase of the scan (r = 0.568, p = 0.000), the values relative parenchyma enhancement ratio (r = 0.63, p = 0.000), pancreas stump volume (r = 0.508, p = 0.000) positively correlated with clinically significant pancreatic fistula and the number of acinar cells. Pancreatic duct diameter (r = −0.339, p = 0.001) negatively correlated with clinically significant pancreatic fistula and the number of acinar cells. Pancreatic fistula risk is 3.09 times higher with the number of acini more than 72.5%, sensitivity 75%, specificity 75.71%. Pancreatic fistula risk is 1.8 times higher with the density of the pancreas in the native phase over 35.5 HU sensitivity 62%, specificity 65%. Pancreatic fistula risk is 2.76 times higher with values parenchyma accumulation coefficient more than 1, sensitivity 75%, specificity 73%.Conclusions. Contrast enhancement computed tomography allows evaluating acinar index in the preoperative period to pick out the high-risk patient group to development of pancreatic fistula.

Contrast-Enhanced Computed Tomography in Carcinoma of the Urinary Bladder

1987 ◽  
Vol 28 (1) ◽  
pp. 67-70 ◽  
Author(s):  
E. M. Sager ◽  
S. D. Fosså ◽  
O. Kaalhus ◽  
K. Talle
Keyword(s):  
Computed Tomography ◽  
Urinary Bladder ◽  
Contrast Medium ◽  
Contrast Enhancement ◽  
Bladder Wall ◽  
Contrast Material ◽  
Intravenous Contrast ◽  
Intravenous Contrast Medium ◽  
The Difference ◽  
Enhanced Computed Tomography

Computed tomography (CT) scans of the urinary bladder were taken before and in combination with intravenous contrast medium injection in 30 patients with invasive bladder carcinoma. Three different ways of injecting the same amount of intravenous contrast material were used in three groups, each consisting of ten patients. In the first group the contrast medium was given during 90 seconds, in the second group during 40 seconds and in the third one, the first half during 20 seconds and the second half during 90 seconds. The attenuation in the tumors and in the bladder wall was measured in Hounsfield units. Independent of injection method, all tumors showed significantly higher contrast enhancement than the bladder wall when the injection was terminated. The difference in contrast enhancement was greatest in the group where the shortest injection time was used and greatest immediately after the conclusion of the injection. The difference in contrast enhancement between tumor and bladder wall was visible on the monitor in all cases.

Computed Tomography Features Predictive of Lymph Node Involvement in Patients With a Nonfunctioning Pancreatic Neuroendocrine Tumor

Pancreas ◽  
2017 ◽  
Vol 46 (8) ◽  
pp. 1056-1063 ◽  
Author(s):  
Sang Hyun Choi ◽  
Hyoung Jung Kim ◽  
So Yeon Kim ◽  
Jae Ho Byun ◽  
Kyung Won Kim ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Lymph Node ◽  
Neuroendocrine Tumor ◽  
Pancreatic Neuroendocrine Tumor ◽  
Lymph Node Involvement ◽  
Node Involvement
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