{"artifact_id":"L2-058-001","layer":"L2","parent_l1":"L1-058","title":"MR Angiography (time-of-flight / phase-contrast) Mismatch-Only Spec","omega":{"dims":{"H":128,"W":128,"Z":[32,512],"TE_ms":[3,30],"TR_ms":[10,100],"SNR_dB":[0.0,35.0],"motion":[0.0,0.5],"pulsatility":[0.0,0.3],"inplane_saturation":[0.0,0.5],"turbulence_dephasing":[0.0,0.3]},"type":"range"},"epsilon":{"type":"fn","expression":"14.0 + 0.3 * SNR_dB - 10.0 * inplane_saturation - 8.0 * motion - 5.0 * turbulence_dephasing"},"difficulty_score":0.5,"delta_tier":5,"fingerprint":"d0a0edb6fef723979b0952933f391c50c810722448ca95e99811d0cc051eeba8","status":"testnet","submitted_by":"mainnet_mirror","chain_hash":"0x151a21dbcd967a6296cc5240e78e1a87a2efbd08eaa4056fbfc4738d23a1362e","chain_tx_hash":"0xdae3bdc999f1e7e919e6190eb64ee1370abb914fd2379780fc27d5c43809f16c","chain_block":41553361}