{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T21:01:57Z","timestamp":1791406917219,"version":"4.3.3"},"reference-count":35,"publisher":"S. Karger AG","issue":"3-4","license":[{"start":{"date-parts":[[2006,1,1]],"date-time":"2006-01-01T00:00:00Z","timestamp":1136073600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2006,1,1]],"date-time":"2006-01-01T00:00:00Z","timestamp":1136073600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cells Tissues Organs"],"published-print":{"date-parts":[[2006]]},"abstract":"<i>Aims:<\/i> Osteolytic (Walker 256, W256) and osteoblastic (MatLyLu, MLL) metastases were induced to investigate their effect on bone architecture by microcomputed tomography (microCT) and texture analysis of radiographs. <i>Methods:<\/i> Fischer and Copenhagen rats received an intracardiac injection with W256\/MLL cells, respectively. Femur and tibia radiographs were analyzed by texture analysis with run lengths and fractal algorithms. Microarchitecture was analyzed on primary and secondary spongiosa by microCT. <i>Results:<\/i> W256 and MLL induced a decrease of trabecular bone mass, a disconnection of trabeculae and an increased conversion of plates into pillars. On radiographs and 3-dimensional models of W256 rats, a disappearance of the primary spongiosa was observed. On radiographs and 3-dimensional models of MLL rats, osteolytic lesions were observed as disseminated dark areas. Run length and fractal analyses were altered in both metastases. <i>Conclusion:<\/i> W256 and MLL cells induced two different patterns of osteolysis. 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