{"id":"W2062551933","doi":"10.1118/1.1901843","title":"Impact of multileaf collimator leaf positioning accuracy on intensity modulation radiation therapy quality assurance ion chamber measurements","year":2005,"lang":"en","type":"article","venue":"Medical Physics","topic":"Advanced Radiotherapy Techniques","field":"Physics and Astronomy","cited_by":29,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Toronto; Sunnybrook Health Science Centre","funders":"","keywords":"Multileaf collimator; Ionization chamber; Linear particle accelerator; Quality assurance; Intensity modulation; Dosimetry; Collimator; Reproducibility; Imaging phantom; Medical physics; Optics; Nuclear medicine; Beam (structure); Radiation treatment planning; Materials science; Radiation therapy; Physics; Ionization; Ion; Medicine; Mathematics; Radiology; Phase modulation; Statistics","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0003265841,0.0001845005,0.0002994927,0.0000310711,0.0000976173,0.0000153573,0.0001061063,0.00007023166,0.0002093345],"category_scores_gemma":[0.00006622311,0.0001579322,0.0001752582,0.000155379,0.00006562935,0.000326638,0.00001452192,0.0002180968,0.000006436459],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001892424,"about_ca_system_score_gemma":0.0000878051,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0001610282,"about_ca_topic_score_gemma":0.000001097833,"domain_scores_codex":[0.9984633,0.0001006604,0.0003571245,0.0002361962,0.0006407652,0.0002019622],"domain_scores_gemma":[0.9989449,0.0001557026,0.0003338412,0.0002698849,0.000194891,0.0001007229],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"design_other","study_design_gemma":"observational","study_design_scores_codex":[0.0003785533,0.001255367,0.3199995,0.00001470489,0.0002516723,3.887955e-7,0.0005909606,0.004948557,0.05567314,0.0006975617,0.0007704152,0.6154192],"study_design_scores_gemma":[0.003474648,0.0004195512,0.7174352,0.0002064818,0.00001705408,8.344685e-7,0.0000131277,0.02710249,0.2470932,0.003036927,0.0006663383,0.0005340907],"study_design_candidate":"observational","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.7396377,0.00003124252,0.2595338,0.0001367452,0.000067489,0.0002685211,0.0000200733,0.00005972531,0.0002446776],"genre_scores_gemma":[0.9970996,0.00002689003,0.001826192,0.0001773587,0.0007205109,0.00002587293,0.00008854536,0.00002441223,0.00001056598],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.6148852,"threshold_uncertainty_score":0.6440287,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.03742727508653732,"score_gpt":0.3659426667094549,"score_spread":0.3285153916229175,"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."}}