FIELD: medicine.SUBSTANCE: invention relates to medical equipment, namely to methods and devices for perfusion visualisation. The method includes the determination of two energy-dependent components basing on projection data from two spectral scannings, which are not agent-based. The first of the two spectral scannings is carried out at the first emission voltage, the second one - at the second emission voltage. After that, determined are two energy-dependent components and an agent-based component, basing on the two energy-dependent components. By means of a decomposition device the projection data of a time line, based on an agent, are decomposed for the object into one agent-based component, basing on the two energy-dependent components. Decomposition is performed basing on the projection data of the time line, based on the agent of the two energy-dependent components. The device for the projection data decomposition contains a device of the time line decomposition, determining the projection data, based on the agent with the application of the two energy-dependent components. The visualisation device also includes a computer-readable carrier, which contains instructions, making a computer perform operations of the perfusion visualisation method.EFFECT: application of the invention makes it possible to reduce artefacts of the beam stiffness increase.11 cl, 3 dwgИзобретение относится к медицинской технике, а именно к способам и устройствам визуализации перфузии. Способ включает определение двух зависящих от энергии компонент на основе проекционных данных от двух спектральных сканирований, не основанных на агенте. Первое из двух спектральных сканирований выполняют при первом напряжении эмиссии, а второе - при втором напряжении эмиссии. Первое и второе напряжения эмиссии различны. Далее определяют две зависящие от энергии компоненты и компоненту, основанную на агенте, на основе двух зависящих от энергии компонент. Посредством устройства разложения разлагают проекци
