[Docetaxel and gemcitabine combination in soft-tissue sarcomas treatment].

Soft-tissue sarcomas (STS) are usually sensitive to doxorubicine and/or ifosfamide. When tumors become refractory to these two drugs, chemotherapeutic options are limited. All the drugs tested generally yield occasional or negligible response, with response rates lower than 20% and a poor duration of response.

Magnetic resonance imaging measurements of vascular permeability and extracellular volume fraction of breast tumors by dynamic Gd-DTPA-enhanced relaxometry.

Vascular permeability (k(ep), min(-1)) and extracellular volume fraction (v(e)) are tissue parameters of great interest to characterize malignant tumor lesions. Indeed, it is well known that tumors with high blood supply better respond to therapy than poorly vascularized tumors, and tumors with large extracellular volume tend to be more malignant than tumors showing lower extracellular volume. Furthermore, the transport of therapeutic agents depends on both extracellular volume fraction and vessel permeability.