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Physics and Radiation Protection

Fisica i protecció radiològica a Vall d'Hebron

The Physics and Radiation Protection Department is made up of graduates in physics who have qualified as specialists in hospital radiophysics and senior technicians in radiotherapy or radiodiagnosis. The professional activity of staff in the Department comprises three main aspects: clinical care, research and teaching.


Our Department offers support for all the departments at the Hospital that use ionising radiation for patient treatment or diagnosis. This type of radiation is based on  photons or particles that produce ions upon interaction with matter. In the field of medicine it has applications in both diagnosis, with scintigraphy and in treatment, radiation therapy in oncology being an example of this. 

The primary responsibility of staff in this Department is to ensure effective, risk-free administration of radiation, in order to attain the best results in diagnosis or therapy in accordance with the patient’s medical outlook. This includes protecting the patient, the worker and other people present from potential risks or excess radiation exposure.

In order to carry out this task, we establish suitable dosimetry and quality control, measure and characterise radiation, determine the dose administered, and define procedures to ensure good image quality. We also carry out quality assurance programmes and collaborate with other health professionals involved in optimising the balance between the benefit and the risk of using radiation.


Portfolio of services 

  • Patient dosimetry studies
  • 3DRCT dosimetry study. Photons and electrons
  • Intensity-modulated radiation therapy (IMRT) dosimetry study
  • Radiosurgery dosimetry study
  • Dosimetry study of cranial and extracranial stereotaxis
  • Dosimetry study and in vivo dosimetry with total body irradiation
  • Dosimetry study for ophthalmic brachytherapy
  • Dosimetry study for patients undergoing diagnostic tests
  • Dosimetry study for pregnant patients undergoing X-ray tests
  • Equipment quality control
  • Quality control of radiotherapy equipment, accelerators, cobalt unit
  • Quality control of image diagnostics equipment
  • Quality control of nuclear medicine equipment, radioisotope calibrators, gamma chambers, SPECT and PET
  • Quality control of imaging monitors
  • Radiation protection
  • Quality control of personal protective equipment (PPE)
  • Management of radiation protection: licences, inspections, authorisations, modifications to radioactive and radiodiagnostic installations
  • Basic radiation protection measures: classification of personnel, zoning, signs, rules, regulations, emergency procedures
  • Monitoring and control of workers: dosimetry controls, dosimetry management, dosimetry history, dosage estimates.
  • Monitoring and control of working areas in facilities: risk of external irradiation and contamination
  • Quality control of detectors: environmental radiation and pollution
  • Management of non-encapsulated radioactive material and radioactive sources
  • Management of radioactive waste
  • Continuous education and advice on radiation protection and advisory services



Our Department was accredited as a teaching unit for the hospital radiophysics specialisation in 1995. Internationally, this specialisation is known as "medical physics" and involves the application of physics to the field of medicine. The title of specialist in hospital radiophysics is obtained after three years of training as a resident. The SFPR has three residents, one for each year of training. 

Related professionals
Dra. Mercè
Beltran Vilagrasa
Head of Department
Physics and Radiation Protection
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