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Article de Chinois | WPRIM | ID: wpr-602505

RÉSUMÉ

Objective To reconstruct the perfusion parameters of murine hindlimbs peripheral tissue by using fluorescence reflectance imaging technique. Methods BALB/c mice were injected with intravenous bolus injection of indocyanine green (ICG) (10μg) into the tail vein. Time-series fluorescence intensity images were obtained for 200 s immediately after the injection. After the serial imaging, silhouette images of the mice were taken under white light to obtain the region of interest (ROI) of the murine hindlimbs. Bi-exponential model was applied to analyze the dynamic fluorescence parameters and the peripheral tissue perfusion parameter images were reconstructed. Results The fitted perfusion curves obtained from bi-exponential model were in good agreement with the measured ones. The parametric images which reflected the vascular sufficiency of murine hindlimbs were reconstructed. Conclusions A novel method for parametric images of murine hindlimbs peripheral tissue blood perfusion is proposed in this paper, which is noninvasive with higher resolution and little damage to biological tissues.

2.
Zhonghua ganzangbing zazhi ; Zhonghua ganzangbing zazhi;(12): 425-429, 2014.
Article de Chinois | WPRIM | ID: wpr-314024

RÉSUMÉ

<p><b>OBJECTIVE</b>To evaluate the correlation of liver hardness testing</p><p><b>RESULTS</b>obtained by FibroTouch and FibroScan and the liver pathological stage.</p><p><b>METHODS</b>Seventy-five patients with chronic hepatitis B who presented to our clinic between January 2011 and April 2013 were examined with FibroTouch and FibroScan to evaluate the degree of liver fibrosis. Forty-six of those patients also underwent liver biopsy examination.</p><p><b>THE RESULTS</b>from technology-based testing and histopathological evaluation of the biopsy were compared by statistical analysis to determine the consistency of FibroTouch and FibroScan in regard to histological stage.</p><p><b>RESULTS</b>Analysis by paired t-test showed that the</p><p><b>RESULTS</b>from FibroTouch and FibroScan were not significantly different (t = -0.17, P =0.8616), and the correlation coefficient from Pearson's correlation analysis was 0.9949 (P less than 0.05), suggesting that the two technologies'</p><p><b>RESULTS</b>are correlated. Based on the histopathology</p><p><b>RESULTS</b>for liver fibrosis stage, the FibroTouch diagnosis of liver fibrosis more than or equal to S 1 had a receiver operating characteristic (ROC) area under the curve (AUC) of 0.889, diagnosis of liver fibrosis more than or equal to S2 had a ROC AUC of 0.941, diagnosis of liver fibrosis more than or equal to S3 had a ROC AUC of 0.908, and diagnosis of liver fibrosis more than or equal to S4 had a ROC AUC of 0.911.</p><p><b>CONCLUSION</b>Compared to FibroScan, FibroTouch has a better ability for detecting liver fibrosis and a better consistency with liver pathological stage determined by histopathological analysis.</p>


Sujet(s)
Adulte , Sujet âgé , Femelle , Humains , Mâle , Adulte d'âge moyen , Jeune adulte , Aire sous la courbe , Biopsie , Études cas-témoins , Imagerie d'élasticité tissulaire , Hépatite B chronique , Anatomopathologie , Foie , Anatomopathologie , Études prospectives
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