wizyta

od 2020-09-20

Title: Method for obtaining images of electron relaxation time in electron paramagnetic resonance (EPR) tomography by measuring distribution of spin relaxation times of electron spins, involves

Source: Patent Number: EP2378281-A1 ; PL390887-A1

Year : 2010

Abstract:

NOVELTY - The method involves establishing time and repetition of set modulation in resonator (8) so as to obtain the projection of relaxation time. The amplitude value of EPR signals which is proportional to sample magnetization is established as measured in fast adiabatic transition condition in presence of magnetic field gradient with respect to swept condition stating that the modulation is performed by changing generator frequency or magnetic field. The value of relaxation time is determined for every point of recorded spectra using a preset formula.
USE - Method for obtaining images of electron relaxation time in EPR tomography by measuring distribution of spin relaxation time of electron spin, used for oncological treatment.
ADVANTAGE - The images of electron relaxation time in EPR tomography can be obtained effectively in presence of strong gradients and radicals with short relaxation time. The time value can be reduced by using smaller gradients or slow-rotating gradients with assigned rotation. Thus the measurement of the spin relaxation time can be measured quickly and precisely. The individual images can be combined into sequence of frames presenting real-time changes of oxygen concentration in selected tissue. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for system for enabling localization of cancerous lesion using electron paramagnetic resonance imaging system. DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram illustrating the process for obtaining the images of relaxation time in EPR tomography.

   (Pobrane:  2021-01-20)