Open Question

Can a scanner-transferable, prospectively-validated imaging rule distinguish true early progression from treatment effect (pseudoprogression) at the individual-patient level?

Evidence profile

Status: question. Rule: atlas-profile-2.0.

5 linked publications; not a count of independent studies.

Missing appraisal does not mean no evidence exists. Inspect the full profile and source relationships in the interactive Atlas.

Historical grade: UNRESOLVED-CONTROVERSY (retained from 22 September 2026; not a completed profile 2.0 assessment).

Why it matters

This is the single most common unresolved daily decision in neuro-oncology; current practice defaults to watchful waiting, delaying effective therapy or prolonging toxic ineffective therapy.

Conflicting evidence

Cohort-level separation exists (perfusion, PET) but thresholds do not transfer across sites; RANO 2.0 still relies on confirmation scans.

Proposed study direction

Prospective multi-vendor cohort with biopsy/long-follow-up ground truth, pre-registered thresholds, calibration + decision-curve analysis; amino-acid PET arm where available.

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Gap verification

This question comes from selected literature. Confirm that the gap remains open with a current search and mentor review.

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About this page

Curated and maintained by Resonant Labs. Editorial lead: Claims are synthesized from the cited literature and graded per the Atlas methodology (about the Atlas). Page generated 2026-10-02. This is not a new clinical review date.

This is an educational research resource from Resonant Labs, not clinical advice. Atlas assessments are heuristic, not probabilities or formal GRADE ratings. Findings are summarized from the literature and may change as the field evolves.