{"id":"W4415872188","doi":"10.1121/10.0039768","title":"Elevational diffraction effect in estimating the local attenuation-coefficient slope using synthetic-transmit-aperture ultrasound imaging","year":2025,"lang":"en","type":"article","venue":"JASA Express Letters","topic":"Ultrasound Imaging and Elastography","field":"Medicine","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Toronto","funders":"Canada Foundation for Innovation; Natural Sciences and Engineering Research Council of Canada; Toronto Metropolitan University","keywords":"Diffraction; Attenuation; Gaussian; Focus (optics); Attenuation coefficient","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"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":[0.002181622,0.0005719501,0.0002566164,0.0003313348,0.0001381774,0.0006986085,0.000360544,0.0004793941,0.0004815974],"category_scores_gemma":[0.01142563,0.0003299315,0.0002095296,0.0005020684,0.0004964281,0.0007973303,0.0007146993,0.000430817,0.0001907282],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003799633,"about_ca_system_score_gemma":0.0006019188,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001414887,"about_ca_topic_score_gemma":0.002218916,"domain_scores_codex":[0.9990158,0.0003339459,0.00007676129,0.0001280979,0.0003940643,0.00005123566],"domain_scores_gemma":[0.9961129,0.002406861,0.0005601048,0.0003735626,0.0004943087,0.0000521814],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.0006387481,0.0001101045,0.04256515,0.000424544,0.0001877913,0.0006179619,0.0006818779,0.1272773,0.7220998,0.004847786,0.0005235174,0.1000255],"study_design_scores_gemma":[0.00003110778,0.0002850511,0.02374787,0.0000526964,0.0001286494,0.001223925,0.0001227413,0.4539053,0.5167288,0.001847272,0.001803891,0.0001225648],"study_design_candidate":"simulation_or_modeling","study_design_consensus":null,"genre_codex":"methods","genre_gemma":"empirical","genre_scores_codex":[0.4730076,0.001130392,0.5233843,0.0002203022,0.00005150262,0.00004228345,0.0001196934,0.000582605,0.001461347],"genre_scores_gemma":[0.8456823,0.0005979115,0.1528488,0.0001061352,0.00001539417,0.00002751955,0.0001466809,0.00009630502,0.0004789651],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.002181622,"threshold_uncertainty_score":0.01153767,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.005744079828648551,"score_gpt":0.2544380854514979,"score_spread":0.2486940056228493,"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."}}