Revision 1

Accepted · first revision · record

Title: Traceable three-dimensional dose measurement
Plain: Modern treatments shape dose in three dimensions, but routine checks measure it at points or on planes. A trustworthy full-volume measurement does not exist.
Precise: Develop a three-dimensional dosimeter with spatial resolution of 1 mm, dose accuracy of 2 percent, energy and dose-rate response within 1 percent of water, and traceability to a primary standard. Candidates: radiochromic and polymer gels, plastic scintillator volumes with optical tomography, and Cherenkov imaging. An answer is a demonstrated system meeting all four criteria simultaneously.
Settled by: Independent verification against calorimetry and ion chambers across modalities, including ion and ultra-high dose-rate beams.
Kind: well-posed
Answer type: value
References: (empty)
Literature status: open
Status note: (empty)
Posed since: 1995