A portable radiological cassette includes a scintillator, a photosensitive slab, the scintillator and the photosensitive slab forming a panel, the panel having a front face intended to receive the incident x-ray and a rear face opposite the front face, an electronic circuit board, a mechanical protection housing, wherein the panel and the electronic circuit board are disposed, comprising a top face and a bottom face; wherein the top face of the mechanical protection housing comprises: a first layer of rigid material, a second layer of rigid material, the second layer of rigid material being in contact with the front face of the panel, a layer of cellular material disposed between the first and the second layers of rigid material.