1. Structural imaging of the pancreas in rat using micro-CT: application to a non-invasivelongitudinal evaluation of pancreatic ductal carcinoma monitoring
- Author
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Aprahamian M, Raykov Z, Mutter D, Akladios Cy, J. Marescaux, and Gaétan Bour
- Subjects
Oncology ,orthotopic tumor model ,medicine.medical_specialty ,microCT ,business.industry ,Non invasive ,lcsh:R ,lcsh:Medicine ,medicine.anatomical_structure ,Internal medicine ,pancreatic adenocarcinoma ,Medicine ,rat ,Pancreatic carcinoma ,Radiology ,business ,Pancreas ,Micro ct ,Structural imaging - Abstract
The aim of the study was to evaluate the feasibility of a longitudinal non-invasive monitoring of rat pancreatic ductal adenocarcinoma (PDAC) using microCTscans (μCT). The identification of the pancreatic gland on (μCT) was performed at first using contrast products (Fenestra LC and VC, v/v) at a dosage of 0.5 ml/Kg of body weight. Then orthotopic PDAC developed in adult Lewis rat was detected and monitored. In vivo μCT measurement of tumor was compared to actual size ex vivo in 12 rats. Gemcitabine treatment of PDAC was monitored at two week intervals until defined endpoints (liver metastasis or ascitis) in 10 rats versus 10 controls. μCT had a 100% positive predictive value in the detection of orthotropic PDAC. Regression analysis showed a linear correlation between ex vivo and in vivo μCT tumor measurements. Longitudinal evaluation of tumor progression showed a reduction in tumor growth (P
- Published
- 2013