Radiology Evidence Evolution

5 evidence evolution narratives tracing how landmark trials and guideline updates reshaped radiology practice.

Incidental Pulmonary Nodule Management

Raising the worry threshold

CT-for-everything → Fleischner 2005 → 2017 revision → Lung-RADS → AI risk models

Beyond mammography

Film → digital → tomosynthesis (STORM/ASTOUND) → supplemental MRI (DENSE) → risk-adapted

Seeing more with less

High-dose → ALARA → iterative reconstruction → spectral/photon-counting CT → dose tracking

The computer sees patterns

CAD → deep learning (CheXNet 2017) → FDA clearances → clinical integration → collaboration

Less follow-up, same safety

Operate-for-size → CT washout → chemical shift MRI → ACR White Paper → reduced follow-up