1. A method comprising the steps of: scanning a region of interest during a scan based on the perfusion of contrast agent at a predetermined sampling frequency during the time of absorption of contrast agent in the region of interest and generating data for a time period representing the scanned region of interest, identifying the predetermined change in an amount of a contrast agent in the region of interest from the data for the time period and scanning the area of interest with a lower frequency temporal sampling, which is lower than the frequency temporal sampling during the absorption of the contrast agent, in response to the identification of a predetermined change in the amount of contrast agent in the region of interest, wherein the lower frequency temporal sampling is changed during the scan area of interest. 2. A method according to Claim. 1, wherein the predetermined change is a reduction in the amount of contrast material, wherein reduction of contrast indicates the elution veschestva.3. . A method according to claim 1, further comprising the steps of: determining an average pixel intensity data structures for the time period comparing the average pixel intensity with the average intensity of the pixel data in the previous time period iidentifitsiruyut predetermined change based on rezultatasravneniya.4. . A method according to claim 1, further comprising the steps of: segmenting the data for a time period in the subframe, determining an average pixel intensity of a subset of the substructure comparing the average pixel intensity with the average pixel intensity Correspondingly1. Способ, содержащий этапы, на которых:сканируют интересующую область во время сканирования перфузии на основе контрастного вещества с заданной частотой временной дискретизации во время поглощения контрастного вещества в интересующей области и формируют данные за период времени, представляющие сканируемую интересующую областьидентифицируют заданное изменение в количестве контр
