摘要:
An adjuvant of fluorocarbon emulsions for HIFU therapy, which can increase energy deposition in target regions during the therapy, comprises a discontinuous phase consisting of a core encapsuled by a film-forming material and a continuous phase consisting of aqueous medium, wherein the discontinuous phase is well distributed in the continuous one; the particle size of the discontinuous phase is 0.1-2µm; the amount of the film-forming material in the adjuvant is 0.1-100g/L; the core material used is a liquid which performs the liquid-gas phase transition at 38-100°C and is incorporated into the adjuvant in the amount of 5-200ml/L. The adjuvant of fluorocarbon emulsions for HIFU therapy is capable of upgrading the acoustic environment of target regions remarkably, increasing energy deposition in target tissues during HIFU therapy, and consequently significantly improving the damaging effect against tumor cells during clinical HIFU. And the usage of such adjuvant in HIFU therapy.
摘要:
The present invention discloses a plasmid enhancement agent for high intensity focused ultrasound (HIFU) treatment, which can increase acoustic energy deposition at the target location during HIFU treatment. The enhancement agent comprises a nanometer-sized biocompatible solid. The present invention also discloses another plasmid enhancement agent for HIFU treatment, wherein, the enhancement agent comprises a discontinuous phase is comprised of a core material encapsulated by a membrane-forming material, and a continuous phase comprised of aqueous medium; the discontinuous phase is uniformly dispersed in the continuous phase and has a particle size ranging from 10-1000nm; the amount of the membrane-forming material in the enhancement agent is 0.1-100g/L; and the core material comprises nanometer-sized biocompatible solid selected from the group consisting of magnetic biomaterials, hydroxylapatite, and calcium carbonate, and the amount of the core material in the enhancement agent is 0.1-150g/L. The plasmid enhancement agent for HIFU treatment of the present invention can significantly change the acoustic environment of the target location and can increase acoustic energy deposition at the target location during HIFU treatment. Eventually, the effectiveness of clinical HIFU treatment to ablate the tumor cells can be significantly improved. Accordingly, the present invention discloses use of the above plasmid enhancement agent for HIFU treatment during HIFU treatment.
摘要:
The present invention discloses a particle enhancement agent for high intensity focused ultrasound (HIFU) treatment, which can increase acoustic energy deposition at the target location during HIFU treatment. The enhancement agent comprises a discontinuous phase comprised of a core material encapsulated by a membrane-forming material and a continuous phase comprising of aqueous medium. The discontinuous phase is uniformly dispersed in the continuous phase and the particle size of the discontinuous phase ranges from 0.1-8µm; the amount of the membrane-forming material in the enhancement agent is 0.1-100g/L; the core material is comprised of a liquid that does not undergo a liquid-gas phase transition at 38-100°C, and the amount of core material in the enhancement agent is 5-200g/L. The particle enhancement agent for HIFU treatment of the present invention can significantly change the acoustic environment of the target location and can increase acoustic energy deposition at the target location during HIFU treatment. Eventually, the ability of clinical HIFU treatment to ablate tumor cells can be significantly improved. Accordingly, the present invention discloses use of a particle enhancement agent for HIFU treatment during HIFU treatment.
摘要:
The present invention discloses an enhancement agent for high intensity focused ultrasound (HIFU) treatment, which is administered to a patient before HIFU treatment and can reduce the level of EEF at the target location to be treated with HIFU. EEF is presented by the expression: EEF = ηPt / v (unit: J/mm 3 ), and refers to the HIFU energy needed to effectively treat a tumor per unit volume of the tumor, wherein, η=0.7; P refers to the total acoustic power of HIFU source (unit: W); t refers to the total time of HIFU treatment (unit: s); V refers to the volume of HIFU-induced lesions (unit: mm 3 ). If the amount of EEF at the target location before administration of the enhancement agent is defined as EEF (base) and the amount of EEF at the target location after administration of the enhancement agent is defined as EEF (measurement) , the ratio between EEF (base) and EEF (measurement) is more than 1, preferably more than 2, and more preferably over 4. The use of the enhancement agent for HIFU treatment of the present invention makes it possible to treat deep-seated tumors. In addition, patients with hepatic tumors can be effectively treated without removal of ribs. Accordingly, the present invention discloses methods for increasing acoustic energy deposition at target location during HIFU treatment and screening the enhancement agents for HIFU treatment.
摘要:
The present invention discloses a fluoro-carbon emulsion enhancement agent for HIFU treatment, which can increase acoustic energy deposition at the target location during HIFU treatment. The enhancement agent comprises a discontinuous phase comprising of a core material encapsulated by a membrane-forming material and a continuous phase comprised of aqueous medium; the discontinuous phase is uniformly dispersed in the continuous phase and the particle size of the discontinuous phase ranges from 0.1-2µm; the amount of the membrane-forming material in the enhancement agent is 0.1-100g/L; the core material is comprised of a liquid that undergoes a liquid-gas phase transition at 38-100°C, and the amount of the core material in the enhancement agent is 5-200ml/L. The fluoro-carbon emulsion enhancement agent for HIFU treatment of the present invention can significantly change the acoustic environment of the target location and can increase acoustic energy deposition at the target location during HIFU treatment. Eventually, the ability of clinical HIFU treatment to ablate tumor cells can be significantly improved. Accordingly, the present invention discloses use of a fluoro-carbon emulsion enhancement agent for HIFU treatment during HIFU treatment.