Fig. 4

Severe vasospasm of the MCA and ACA was noted on the right (Fig. 4A). The right M1 segment was treated with a Cascade L that resulted in normalisation of the calibre (Fig. 4B). The severe spasm seen on the left (Fig. 4C) was also treated with the Cascade L however, on angiography after the initial expansion of the device persistent focal spasm of the distal M1 segment was seen (Fig. 4D) that was treated by partially unsheathing the cascade device to focus the radial force a at this location (Fig. 4E) with complete calibre normalisation seen on the final angiography (Fig. 4F)