Fig. 2
From: Pre-referral intranasal artesunate powder for cerebral malaria: a proof-of-concept study
Nasal cast and spraying device (picture curtesy of Aptar pharma). a, b Pictures of the experimental set-up of artesunate powder deposition study. c Picture of the spraying device (UDSp). d Side picture of the nasal cast showing the nasal cavity divided in 4 blocks (in red): block 1 = nose, nasal valve, and frontal sinuses; block 2 = maxillary sinuses, frontal sinuses, nasal floor, turbinates, and ethmoids; block 3 = maxillary sinuses, sphenoids, nasal floor, ethmoids and turbinates; block 4: Sphenoids and nasopharynx