Phase-B axis scope gate

Decision: Current Phase-B maps are useful for diagnosis, but sagittal H-F is not reportable from the current XZ/XY projections. True sagittal H-F requires YZ.
Keep: Transversal R-L R=2/R=3 in XZ remains a reportable candidate after visual review. XY remains diagnostic/secondary.

Contract

{
  "ok": true,
  "candidate_name": "phase_b_axis_scope_gate_current",
  "purpose": "Hard gate for reportable vs diagnostic Phase-B PPA planes.",
  "clean_review_ok": true,
  "alias_explainability_ok": true,
  "alias_explainability_warn_qa_flag_count": 17,
  "current_report_final_ok": false,
  "transversal_rl_current_reportable_candidate": true,
  "sagittal_hf_current_reportable_candidate": false,
  "true_yz_missing": true,
  "npz_count": 32,
  "has_3d_candidate_arrays_in_current_npz": false,
  "has_yz_named_current_npz": false,
  "decision": "Do not integrate sagittal H-F PPA into final report from current XZ/XY projections. Build true YZ sagittal-HF maps or mark sagittal-HF PPA as not reportable.",
  "next_step": "Build/recompute true YZ sagittal-HF R=2/R=3 maps if the existing generator can evaluate arbitrary plane; otherwise keep Phase B final limited to transversal R-L."
}

Axis gate table

condition intended_anatomy intended_plane_axes phase_direction reportable_current_plane diagnostic_only_current_plane status reason
transversal_rl_r2 transversal/axial breast plane XZ R-L b0_y_transverse_xz b0_z_transverse_xy candidate_reportable_after_visual_review XZ contains X=R-L and Z=A-P; R-L acceleration lies in this plane.
transversal_rl_r3 transversal/axial breast plane XZ R-L b0_y_transverse_xz b0_z_transverse_xy candidate_reportable_after_visual_review XZ contains X=R-L and Z=A-P; R-L acceleration lies in this plane. R=3 remains stricter and needs stronger caveat.
sagittal_hf_r2 sagittal breast plane YZ H-F none b0_y_transverse_xz and b0_z_transverse_xy missing_true_yz_recompute_required True sagittal H-F should be evaluated in YZ. XZ misses H-F; XY contains H-F but is not sagittal.
sagittal_hf_r3 sagittal breast plane YZ H-F none b0_y_transverse_xz and b0_z_transverse_xy missing_true_yz_recompute_required True sagittal H-F should be evaluated in YZ. R=3 is especially sensitive and must not be reported from a substitute projection.

Key images copied for review

images/b0_y_transverse_xz_phase_b_1overg_like_encoding_efficiency.png

images/b0_z_transverse_xy_phase_b_1overg_like_encoding_efficiency.png

images/b0_y_transverse_xz_transversal_rl_r2_alias_explainability.png

images/b0_y_transverse_xz_transversal_rl_r3_alias_explainability.png

images/b0_z_transverse_xy_sagittal_hf_r2_alias_explainability.png

images/b0_z_transverse_xy_sagittal_hf_r3_alias_explainability.png

Tables