An patient specific anatomical kidney phantom simulator comprising: - a housing filled with the surrounding material replicating soft tissue of a patient, and covered with a covering material having properties corresponding to the patient skin, - an anatomical kidney phantom corresponding to the patient kidney placed into the surrounding material and having a number of cavities (51, 52, 53, 54, 55, 56) simulating kidney calyxes, where each of the cavities is separated from one another, characterised by that comprises further - outer reservoirs (61, 62, 63, 64, 65, 66) wherein each outer reservoir is filled with a corresponding liquid of a different colour or x-ray opaque contrast liquid in the anatomical kidney phantom of the patient and each of the outer reservoirs is - separated from one another and fixed to the housing of the anatomical kidney phantom simulator, - channels (71, 72, 73, 74, 75, 76) in the surrounding material for connecting the cavities (51, 52, 53, 54, 55, 56) with the outer reservoirs (61, 62, 63, 64, 65, 66) for introducing different colour-or x-ray opaque contrast liquids from outer reservoirs into the cavities simulating the kidney calyxes of the patient, - connecting pipes (81, 82, 83, 84, 85, 86) for connecting the channels (71, 72, 73, 74, 75, 76) with the outer reservoirs (61, 62, 63, 64, 65, 66) where each outer reservoir is connected by corresponding pipe and channel only to one cavity simulating a kidney calyx - wherein the cavities simulating kidney calyxes are formed from air balloons with diameter 5 to 7 mm which are placed into the mold before casting the anatomical kidney phantom and removed after casting. - a housing filled with the surrounding material replicating soft tissue of a patient, and covered with a covering material having properties corresponding to the patient skin, - an anatomical kidney phantom corresponding to the patient kidney placed into the surrounding material and having a number of cavities (51, 52, 53, 54, 55, 56) simulating kidney calyxes, where each of the cavities is separated from one another, characterised by that comprises further - outer reservoirs (61, 62, 63, 64, 65, 66) wherein each outer reservoir is filled with a corresponding liquid of a different colour or x-ray opaque contrast liquid in the anatomical kidney phantom of the patient and each of the outer reservoirs is - separated from one another and fixed to the housing of the anatomical kidney phantom simulator, - channels (71, 72, 73, 74, 75, 76) in the surrounding material for connecting the cavities (51, 52, 53, 54, 55, 56) with the outer reservoirs (61, 62, 63, 64, 65, 66) for introducing different colour-or x-ray opaque contrast liquids from outer reservoirs into the cavities simulating the kidney calyxes of the patient, - connecting pipes (81, 82, 83, 84, 85, 86) for connecting the channels (71, 72, 73, 74, 75, 76) with the outer reservoirs (61, 62, 63, 64, 65, 66) where each outer reservoir is connected by corresponding pipe and channel only to one cavity simulating a kidney calyx - wherein the cavities simulating kidney calyxes are formed from air balloons with diameter 5 to 7 mm which are placed into the mold before casting the anatomical kidney phantom and removed after casting.