# Dale L. Bailey

Source: https://nuclide.cc/people/dale-bailey/  
Nuclide record `dale-bailey` (Person). Data CC BY-NC 4.0, attribute "Data from Nuclide (nuclide.cc)"; commercial use needs a licence.

## TL;DR

An Australian medical physicist who helped prove that SPECT scans, not just PET scans, can measure exact amounts of radioactivity in the body, which underpins accurate dosing of radioactive cancer treatments.

## Summary

Dale Bailey has worked in nuclear medicine medical physics for more than 35 years and holds joint appointments as Principal Medical Physics Specialist at Sydney's Royal North Shore Hospital and Professor in the Faculty of Medicine and Health at the University of Sydney. With Kathy Willowson, he authored widely cited reviews establishing quantitative SPECT/CT as a technique for measuring absolute radioactivity concentration (kBq/mL) comparable in principle to quantitative PET, work that underlies modern post-therapy dosimetry for lutetium-177 and other therapeutic radionuclides.

He directs the Sydney Vital Northern Translational Cancer Research Centre and has developed methodology for calibrating and validating PET and SPECT scanners for quantitative multicentre clinical trials using non-standard radionuclides such as iodine-124 and iodine-131. His methods work is closely aligned with, and has fed into, the EANM/SNMMI physics and dosimetry standards used across the radiopharmaceutical field.

## Fields

- Kind: Person
- Last checked: 2026-09-22
- Tags: physics; dosimetry; SPECT
- Role: Principal Medical Physics Specialist, Department of Nuclear Medicine, Royal North Shore Hospital, Sydney; Professor, Faculty of Medicine and Health, University of Sydney
- Specialisms: quantitative SPECT/CT; radionuclide dosimetry; PET/SPECT camera calibration

## Sources

- University of Sydney CV: https://www.sydney.edu.au/AcademicProfiles/profile/resource?urlid=dale.bailey&type=cv
- Quantitative SPECT/CT review, EJNMMI 2014: https://pubmed.ncbi.nlm.nih.gov/24037503/

## Connected records

- technologies: [In vivo dosimetry and patient-specific quality assurance](https://nuclide.cc/technologies/in-vivo-dosimetry/), [Radioligand dosimetry](https://nuclide.cc/technologies/radioligand-dosimetry/), [SPECT/CT](https://nuclide.cc/technologies/spect-ct/)
- isotopes: [Iodine-124](https://nuclide.cc/isotopes/i-124/), [Iodine-131](https://nuclide.cc/isotopes/i-131/), [Lutetium-177](https://nuclide.cc/isotopes/lu-177/)

---
JSON: https://nuclide.cc/api/v1/entities/dale-bailey.json