{"id":"W1844169741","doi":"10.1118/1.4922710","title":"Calibration of radiotherapy ionization chambers using Co‐60 is outdated and should be replaced by direct calibration in linear accelerator beams","year":2015,"lang":"en","type":"article","venue":"Medical Physics","topic":"Advanced Radiotherapy Techniques","field":"Physics and Astronomy","cited_by":4,"is_retracted":false,"has_abstract":true,"ca_institutions":"National Research Council Canada","funders":"","keywords":"Dosimeter; Calibration; Dosimetry; Physics; Radiation protection; NIST; Linear particle accelerator; Medical physics; Ionizing radiation; Radiation; Nuclear medicine; Beam (structure); Nuclear physics; Optics; Medicine; Computer science; Irradiation","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0268633,0.0004786357,0.000667714,0.0009008269,0.002210342,0.005297297,0.002777843,0.005936844,0.003825952],"category_scores_gemma":[0.05819536,0.0007324702,0.000682635,0.001320168,0.008427194,0.005216012,0.002571251,0.009387756,0.004631136],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.002916344,"about_ca_system_score_gemma":0.005240326,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.003852094,"about_ca_topic_score_gemma":0.003535493,"domain_scores_codex":[0.9520798,0.007234932,0.00399308,0.005052364,0.03036194,0.001277864],"domain_scores_gemma":[0.9108605,0.02389453,0.01422252,0.01486201,0.03488634,0.001274092],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"design_other","study_design_gemma":"not_applicable","study_design_scores_codex":[0.0004796052,0.0002414276,0.03036266,0.001312836,0.0001653911,0.0006304124,0.003655804,0.001217823,0.0237303,0.1675268,0.359902,0.4107749],"study_design_scores_gemma":[0.00006467482,0.0004097189,0.01795581,0.001232418,0.00006032635,0.001611135,0.00119758,0.0005346252,0.02976908,0.01993176,0.9270341,0.0001987104],"study_design_candidate":"not_applicable","study_design_consensus":null,"genre_codex":"commentary","genre_gemma":"methods","genre_scores_codex":[0.03928845,0.04091498,0.07076366,0.6356193,0.06989553,0.0002152623,0.0005380794,0.002907053,0.1398577],"genre_scores_gemma":[0.5086964,0.0357675,0.08712142,0.2823198,0.01378908,0.0002810123,0.0008044839,0.001317418,0.0699029],"genre_candidate":"methods","genre_consensus":null,"teacher_disagreement_score":0.0268633,"threshold_uncertainty_score":0.1420684,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.03624596548827118,"score_gpt":0.3301184771720231,"score_spread":0.2938725116837519,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}