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E-107 estimation of radiation risks for occupational and patient exposure in neuro-radiological intervention procedure
  1. K Alzimami1,
  2. A Sulieman2
  1. 1Radiological Science, King Saud University, Riyadh, Saudi Arabia
  2. 2Radiology and Medical Imaging Department, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia


Introduction Neuro-radiological imaging procedures provide useful findings for patients' diagnosis and management. However, staff and patients are exposure to an avoidable radiation dose which imposes them to a certain radiogenic risk. Consequently, radiation dose measurement is mandatory in order to diminish the likelihood of the related radiation risks.

Objectives This study intended to estimate the patient and staff doses radiation risk for neuro-radioological procedures.

Materials and methods Published studies in English data base were reviewed from 2000 to 2015. The data were organized by country and year of publications. The examinations include (cerebral angiography and embolization, supra-aortic angiography, aneurysm and stroke theraphy.

Results Patient Entrance air kerma (ESAK(Gy)) were ranged between 0.1 Gy to 6.5 Gy per procedures. The operator's radiation doses ranged between 0.001 Gy to 0.003 Gy per procedure depending on staff location and anatomical region. The patient radiogenic risk for cancer and hereditary effects is ranged between 8.0 cancer incidences per 100 procedures up to 10 cancer cases per ×10–4 per procedure, whereas the mean risk for the operators is negligible (1.0 × 10–6, depending on the workload. The tissue reaction risk (erythema) is documented. Few studies linked certain cancer incidence among operators. Patient ESAK values were upper in vascular than in extravascular procedures.

Conclusions The findings of this study illustrate that there are significant radiation risks for patients and operators. Implementation of dose optimization methods may reduce the patient and staff doses up to 80% of its current value. Operators training and modern equipment with pulsed fluoroscopy are the main factors for dose reduction. New applications and operators are found for neuro- radiological intervention are the main challenges in radiological protection.

Disclosures K. Alzimami: None. A. Sulieman: None.

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