| Autor: |
Sheng Nan Yin, Jing Chi, Li Liu, Ning Ding, Yi Ding Ji, Jian Mao Yuan |
| Předmět: |
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| Zdroj: |
Acta Radiologica; Feb2021, Vol. 62 Issue 2, p147-154, 8p |
| Abstrakt: |
Background: Dual-energy computed tomography (DE-CT) scans were acquired to identify cholesterol and adenomatous gallbladder (GB) polyps, which have not been well evaluated before surgery. Purpose: To evaluate the DE-CT findings of GB polyps 1.0-2.0 cm in size and differentiate between cholesterol and adenomatous polyps. Material and Methods: Forty-six patients with GB polyps were surgically treated from December 2017 to December 2019 and divided into two groups according to their postoperative pathologic results: a cholesterol group with 26 patients and an adenomatous group with 20 patients. All of these patients underwent DE-CT imaging with tube voltages of 80 kVp and 140 kVp within two weeks before surgery. Mean attenuation values were measured for every GB polyp at 80/140 kVp and at 40/140 keV. The mean attenuation value changes between 140 kVp and 80 kVp (MAVC140_80 kVp) and mean attenuation value changes between 100 keV and 40 keV (MAVC100-40 keV) were calculated. Results: The CT image parameters of all 46 patients with GB polyps were analyzed. There were significant differences in MAVC140-80 kVp and MAVC100-40 keV between cholesterol and adenomatous polyps (P <0.05); these values were positive for cholesterol polyps and negative for adenomatous polyps. Conclusion: The unique energy spectrum information provided by DE-CT scans is helpful in differentiating between cholesterol and adenomatous polyps 1.0-2.0 cm in size. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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