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Updated: Jun 21, 2026
Multianimal Magnetic Resonance Imaging for Tumor Measurements in Pancreatic Cancer Mouse Models
Published on: February 3, 2026
Multidetector CT evaluation of the course of nonresectable pancreatic carcinomas with neoadjuvant therapy
1Department of Diagnostic Radiology, University of Heidelberg, Heidelberg, Germany. miriam.klauss@med.uni-heidelberg.de
Objective:
A prospective study to determine the value of multidetector CT (MD-CT) in assessing the course of nonresectable pancreatic carcinoma during therapy.
Material And Methods:
26 patients with nonresectable pancreatic carcinoma underwent MD-CT before and after therapy. The examinations were evaluated with regard to tumor size and vascular invasion using an invasion score (IS) by 2 radiologists independently (kappa analysis). Diagnosis was confirmed surgically, by biopsy or clinical course.
Results:
Sensitivity for the assessment of irresectability was 100%. Following therapy, 54% of all the tumors were smaller (14/26), 42% had increased in volume (11/26), and one tumor remained stable (1/26). The IS (veins) during follow-up changed in 26 patients (portal vein: 5 higher (mean score 10.4/16.2), 4 lower (mean score 17.5/11.5); superior mesenteric vein: 12 higher (11/14.4), 5 lower (16.2/14.6); p = 0.026). The IS (arteries) changed in 13 patients (celiac trunk: 3 higher (3.3/10); hepatic artery: 4 higher (5.7/10.2), 3 lower (11.6/10.3); superior mesenteric artery: 2 higher (4.5/9.5), 1 lower (12/11)). The kappa values were calculated between 0.56 and 0.87.
Conclusion:
MD-CT is suitable for evaluating tumor spread during therapy for nonresectable pancreatic carcinoma. The IS is useful for assessing the degree of change in vessel invasion.