{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"e3043151ae7679b8ab97b62eb4556cef8b95fec3a77664e2a2254bc51a6f58b5","created":"2026-10-03T07:18:06Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"ab5e3ebebfe8d8927f652d0beb61b04911f232b0f25381bd94b4306a6e2f4b54","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"classification","assisted_by":[],"external_id":"med.pcct.detector-material","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"The detector can be made of cadmium telluride, cadmium zinc telluride or silicon, each failing in a different way at high photon rates. Which is best overall is unsettled.","posed_since":"2012","precise":"Compare cadmium telluride, cadmium zinc telluride and deep-silicon sensors on detection efficiency at 20 to 140 keV, charge-transport polarization at fluxes above $10^{8}$ counts per second per $\\mathrm{mm}^{2}$, charge-sharing fraction at a given pixel pitch, and K-escape, under identical clinical conditions. An answer is a classification of which material wins for which imaging task, with the physical reasons.","problem_ref":null,"references":"","settled_by":"Side-by-side measurement of the same imaging tasks on detectors of each material at clinical flux.","status_note":"CdTe-based clinical systems have been in use since 2021; deep-silicon systems moved from clinical prototypes toward commercial release around 2025, and no side-by-side comparison under identical conditions has settled the question.","title":"Sensor material choice for clinical count rates","topic_ref":"26d23f25e437e5a24b43745dd4da6507964829094aa1ed73aeaafb9ea3f82278"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"1a58bfbd5c4775f2ce10b57097323afbcc69de1b1b31d2ab7cad2ad0eeeb79f2","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"e2744369c83985d920bcdb05b79f18c0c67f920f84d7e380169882d6abeb38de","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"xT6_51hh_-zb1enRisb_TY8yfou9K_hcJje7EFs6PYnXgRs9SqBq5hun3_a38xSKOJ35VgCYpKnkKaqNNCgQBA"},"schema":"pubphys.envelope/1"},"record_hash":"1a58bfbd5c4775f2ce10b57097323afbcc69de1b1b31d2ab7cad2ad0eeeb79f2","leaf_index":1709}