{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"c53c55b0777616786a66c896e8d089ea4857bca95a6af10ee93d9c0a343004b9","created":"2026-10-03T07:17:52Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"dff9d39f340926f2d45fd640d41035832ef0ca7a587522f99f907cf92160d2ee","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"med.spatial-fractionation","field":"med","n":"1","review_cite":"Yan, Khan, Wu, Simone, Fan, Gressen, Zhang, Limoli, Bahig, Tubin and Mourad, Spatially fractionated radiation therapy: History, present and the future, Clinical and Translational Radiation Oncology, 2020","review_link":"https://doi.org/10.1016/j.ctro.2019.10.004","review_verified":"true","summary":"If radiation is delivered in a comb of narrow beams separated by unirradiated gaps, healthy tissue tolerates doses that would otherwise destroy it, while tumours still respond. The reason is not understood and the best comb spacing is unknown.","title":"Spatially fractionated and microbeam radiotherapy","topic_ref":null,"why":"The tolerance gain is large, so settling the physics could raise deliverable tumour dose substantially."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"309568a913eeab83fa370b104ac678cba3936514b3451a97889575e821f58ffd","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"c098f7ef05bcb2444718dc3ff163d5d92537940bf670dabc2caf2483b31ef894","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"ORMmgxW5dZQWOJi8eSGj9nCpFFfqtKkgUvj4_EdNoV1oOl6Wz8DyI52ffbogYZVyePPEb3oNdwh5ERA4XtaSDw"},"schema":"pubphys.envelope/1"},"record_hash":"309568a913eeab83fa370b104ac678cba3936514b3451a97889575e821f58ffd","leaf_index":279}