STEP-derived receive surrogate: Phase A/B direct candidate
Scope: unloaded ideal-decoupled layout surrogate. This is not measured g-factor, not true SNR, not EM-validated, not clinically validated. Psi=I is an explicit assumption.
What is shown: Phase A SNR-like coverage and Phase B PPA/1-g-like encoding efficiency from STEP-derived ordered-wire surrogate data. Main ROI is connected; alias masks are QA only.
Contract summary
{
"ok": true,
"records_generated": 32,
"image_count": 8,
"npz_count": 32,
"qa_flag_count": 29,
"multi_component_main_roi_count": 0,
"multi_component_alias_mask_count": 16,
"maps_visually_reviewable_decision": "yes for technical visual review",
"recommendation": "Review images first. If visual smoothness is acceptable and QA warnings are interpretable, this becomes the Phase A/B review baseline. If not, debug surrogate fields or alias grouping before increasing grid."
}
Review images
b0_y_transverse_xz_phase_b_inv_g_like_encoding_efficiency_matrix.png
b0_y_transverse_xz_phase_b_snrg_like_matrix.png
b0_y_transverse_xz_phase_a_snr_like_coverage_matrix.png
b0_y_transverse_xz_qa_main_roi_alias_mask_matrix.png
b0_z_transverse_xy_phase_b_inv_g_like_encoding_efficiency_matrix.png
b0_z_transverse_xy_phase_b_snrg_like_matrix.png
b0_z_transverse_xy_phase_a_snr_like_coverage_matrix.png
b0_z_transverse_xy_qa_main_roi_alias_mask_matrix.png
Tables
First QA flags
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{
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"detail": "2"
},
{
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