Assembly for heat treatment of biological tissues

The heat treatment assembly as claimed in one of the preceding claims, characterized in that the control unit (300) comprises processing means (330, 350) to take account of the thermal conductivity at each point in the region.

The heat treatment assembly as claimed in one of the preceding claims, characterized in that the energy-generating means (100) emit focused ultrasound.

The heat treatment assembly as claimed in one of the preceding claims, characterized in that the means (200) for measuring and recording the spatial temperature distribution comprise a magnetic resonance imaging apparatus.

The heat treatment assembly as claimed in one of the preceding claims, characterized in that the amplitude pw of the power to be supplied at a point {right arrow over (r)} at an instant t+Δt is calculated using a relationship of the type:

• 10 pw = Tp ⁡ ( r → , t + Δ ⁢ ⁢ t ) - FT - 1 ⁡ ( T * ( k → , t ) ⁢ ⅇ - k 2 ⁢ D ⁢ ⁢ Δ ⁢ ⁢ t ) FT - 1 ⁡ ( α ⁢ 1 - ⅇ - k 2 ⁢ D ⁢ ⁢ Δ ⁢ ⁢ t Dk 2 ⁢ S * ( k → ) )
• where Tp({right arrow over (r)},t+Δt) is the reference temperature at that point at the moment t+Δt, FT−1 is an inverse Fourier transform, T*({right arrow over (k)},t) is the Fourier transform of the temperature measured at the moment t, D is the heat diffusion coefficient for the tissue, α is the energy absorption coefficient for the tissue, S*({right arrow over (k)}) is the Fourier transform of the spatial distribution of the applied energy S({right arrow over (r)}).

Heat treatment assembly according to one of the preceding claims, characterized in that the energy-generating means (100) comprise energy sources of the ultrasound, laser, microwave or radiofrequency type.