Abstract: The invention provides a (drug-containing) lipid nanoparticle with: (i) at least one phospholipid; (ii) at least one lysolipid; and (iii) at least one phospholipid comprising a hydrophilic polymer; and (iv) at least one structural lipid of formula (I) which has the following general structure: wherein R and R? are long hydrocarbyl hydrophobic chains, Y is a linker element, and PHG is a polar head group described as large according to its van der Waals radius, and which is different from the phospholipid (i). The lipid nanoparticle can release a drug (or API) from within the lipid nanoparticle as a result of focused ultrasound (FUS) applied continuously, at least twice, to a desired part of the body to induce hyperthermia (an increase in temperature). FUS is applied after the lipid nanoparticle containing the drug has been administered to the live subject, and causes controlled release of the drug at the desired site of the body.

Abstract: The invention relates to a hyperthermia (focused ultrasound—FUS) method where an energy source is applied, repeatedly, to a desired part of the body to induce hyperthermia, e.g. using image guidance. Hyperthermia is applied after a drug or biopharmaceutical (API) and/or their labelled equivalents (theranostics) and/or their drug delivery systems has been administered to the live subject to cause the enhanced tissue distribution and/or controlled release of the drug, previously encapsulated in thermo-sensitive (lipid nano)particles, to a desired site of the body. Hyperthermia (Ultrasound) is then halted, and the site of interest. Hyperthermia is then applied again using image guidance to monitor drug's accumulation in the tissue. The drug and or the drug delivery system are also labelled (for imaging) to allow real time monitoring and modulation of the API in the human body which can be used to direct and guide the FUS at the site of interest.

Abstract: The invention provides a (drug-containing) lipid nanoparticle with: (i) at least one phospholipid; (ii) at least one lysolipid; and (iii) at least one phospholipid comprising a hydrophilic polymer; and (iv) at least one structural lipid of formula (I) which has the following general structure: wherein R and R? are long hydrocarbyl hydrophobic chains, Y is a linker element, and PHG is a polar head group described as large according to its van der Waals radius, and which is different from the phospholipid (i). The lipid nanoparticle can release a drug (or API) from within the lipid nanoparticle as a result of focused ultrasound (FUS) applied continuously, at least twice, to a desired part of the body to induce hyperthermia (an increase in temperature). FUS is applied after the lipid nanoparticle containing the drug has been administered to the live subject, and causes controlled release of the drug at the desired site of the body.