The invention relates to the field of pathologies affecting the
central nervous system, particularly severe cerebral pathologies, especially those restricted by the presence of the blood-brain barrier (BBB): gliomas, brain metastases, neurodegenerative diseases (e.g., Alzheimer's, Parkinson's, or ALS), genetic diseases (Huntington's, myopathies, Leigh syndrome,
Rett syndrome), but also to the field of cancers, musculoskeletal and immunological disorders, vascular diseases (
thrombosis) in numerous organs (e.g., liver,
kidney, or
muscle) and in combination with numerous therapeutic approaches (e.g.,
chemotherapy,
immunotherapy,
targeted therapy, or
gene therapy). The invention relates to a microbubble comprising a
fluorinated polymer or
copolymer and a fluorinated gas, its use, and intermediate
polymer or
copolymer compounds. Abbreviated figure: 0