The efficiency of apparent diffusion coefficient quantification in diagnosis of acute cholecystitis and in differentiation of cholecystitis from extrinsic benign gallbladder wall thickening
| Autor: | Alpaslan Yavuz, Osman Toktas, Mehmet Beyazal, Fatma Beyazal Çeliker, Serhat Avcu |
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| Rok vydání: | 2014 |
| Předmět: |
Adult
Male medicine.medical_specialty Cholecystitis Acute Gallbladder Diseases Sensitivity and Specificity Diagnosis Differential Ascites Cholecystitis Image Processing Computer-Assisted medicine Humans Effective diffusion coefficient Radiology Nuclear Medicine and imaging Prospective Studies Prospective cohort study Aged Aged 80 and over Receiver operating characteristic Echo-Planar Imaging business.industry Gallbladder Gallstones Middle Aged medicine.disease body regions Diffusion Magnetic Resonance Imaging medicine.anatomical_structure ROC Curve Female Radiology Differential diagnosis medicine.symptom business |
| Zdroj: | Japanese Journal of Radiology. 32:545-551 |
| ISSN: | 1867-108X 1867-1071 |
| DOI: | 10.1007/s11604-014-0343-8 |
| Popis: | The aim of the current study was to assess the efficiency of the apparent diffusion coefficient (ADC) measurement in diagnosis of acute cholecystitis and in differentiation of cholecystitis from extrinsic benign gallbladder wall thickening.Forty patients who were diagnosed to have acute cholecystitis by ultrasonographic examination were included in this study. The control group consisted of 18 patients without symptoms of gallstones and cholecystitis whose gallbladder walls were thickened due to cirrhotic ascites. Both groups were examined using diffusion weighted imaging, and the mean ADC values were compared using Student's t-test.The diagnoses of the 40 patients were proven by histopathological examination. The mean ADC values of patients diagnosed with cholecystitis (1.68 ± 0.36 × 10(-3) mm(2)/s) were significantly lower than the mean ADC values of the control group (2.35 ± 0.24 × 10(-3) mm(2)/s) (p0.05). Receiver operating characteristics curve analysis based on ADC revealed a cut-off value of 2.04 × 10(-3) mm(2)/s for the diagnosis of cholecystitis, with a sensitivity of 94% and a specificity of 89.7%.ADC value quantification may be an efficient method for making a diagnosis of cholecystitis and in differential diagnosis of cholecystitis from the extrinsic benign gallbladder wall thickening that can be seen during the course of cirrhotic ascites. |
| Databáze: | OpenAIRE |
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