FIELD: medical radiation equipment, applicable for monitoring of system non-uniformity of medical gamma radiation chambers at operation with radiopharmaceuticals. SUBSTANCE: vacuumtight film of polymeric material is placed between plate 1 and case of capsule 2. At manufacture of the mould the mould inner walls are coated with a film, and air is removed from the gap between the field and mould walls. EFFECT: enhanced strength to leakage of radionuclides into the environment and facilitated production practice. 4 cl, 3 dwg
