摘要:
The invention relates to a method and a device for detecting tumorous living cell tissue. It also relates to a method and a device for detecting tumorous cell tissue in collected samples of living cell tissue. In the method, a radiation source is used to emit electromagnetic radiation in a locally defined manner onto cell tissue and, after the radiation source has been switched off, the decay behaviour of the inherent fluorescence intensity excited in the cell tissue by the electromagnetic radiation is detected on the cell tissue by a detector, with temporal and spectral resolution and with a known scanning rate or known scanning rates for at least one wavelength. With the measured intensity values that are obtained, the difference autocorrelation function C(t) of the intensity decay behaviour is determined, from which the fractal dimension D F for the respective irradiated cell tissue is calculated, and the value of the fractal dimension D F is used for a classification in respect of a tumorous invasion of the respective irradiated cell tissue.
摘要:
The invention relates to a scanning force microscope, which can be used for different examinations of the surfaces of samples. The aim of the invention is to provide a scanning force microscope, by which surface regions of samples can be detected, which are oriented at a steeply inclined angle with respect to the central longitudinal axis of a cantilever of the scanning force microscope. In the scanning force microscope according to the invention, at least one sensor tip is disposed on the cantilever, the sensitive region of which is disposed at a distance from the cantilever. To this end, the cantilever which is held on a face and can be prompted to oscillate using at least one actuator can be moved with the sensor tip and sample relative to each other along at least one axis. The sensitive region of a sensor tip and/or the base of a sensor tip are disposed on the cantilever with a distance and next to the center longitudinal axis of the cantilever. Either alone or additionally, the sensor tip can be angled or curved at an angle of
摘要:
The invention relates to a method and device (10) for testing treatments (14) which introduce energy into objects (1), wherein the method comprises the following steps: bonding at least one chemical, optically luminescent compound (3) onto at least one indicator element (6) for testing the treatments (14), wherein at least one luminescence property of the chemical compound (3) can be changed; assigning at least one indicator element (6) to the object (1), wherein the indicator element (6) and the object (1) are simultaneously subjected to the same conditions of the energy-introducing treatment (14); changing the luminescence property of the chemical compound (3), wherein the level of the change to the luminescence property depends upon the energy-introducing treatment (14; irradiating (13) the chemical compound (3) with electromagnetic radiation directed onto the indicator (6) for excitation of the luminescence during the energy-introducing treatment or following the energy-introducing treatment (14) in order to demonstrate the instantaneous energy-introducing treatment (14) or the energy-introducing treatment (14) carried out; time-resolved and/or spectrally-resolved detection of electromagnetic radiation (12) emitted as a result of luminescence of the chemical compound of the indicator element (6) during the luminescence-emitting irradiation (13) or after the luminescence-emitting irradiation (13) is switched off; providing time-resolved and/or spectrally-resolved detection signals from a detector (5) to at least one evaluation unit (9) in which: - the detection signals (17) and reference signals (18) which are stored in a memory (16) and which consist of at least one previously determined reference value and/or at least one reference wavelength or of at least one reference wavelength spectrum are compared and - the energy-introducing treatment (14) carried out on the object (1) is demonstrably established; and displaying same in a display unit (15) after testing for the presence of at least one energy input (14) in the object (1) on the basis of the achieved changed luminescence property of the chemical compound (3).