Investigating the parameters that affect the radiation exposure and establishing typical values based on procedure compl
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INTERVENTIONAL NEURORADIOLOGY
Investigating the parameters that affect the radiation exposure and establishing typical values based on procedure complexity for cerebral angiography and brain aneurysm embolization Chadia Rizk 1
&
Ghassan Abi Chedid 2 & Christine Salem 3 & Jad Farah 4
Received: 17 June 2020 / Accepted: 5 October 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Purpose The purpose of this study is to investigate the parameters that affect the radiation exposure and to establish typical values (TV) based on procedure complexity for cerebral angiography (CA) and brain aneurysm embolization (BAE). Methods Clinical parameters and exposure data were retrospectively reviewed for 348 examinations performed between March 2016 and December 2019 at a single specialized neuroradiology center. TV were derived as the median value of the distribution of exposure parameters such as total air kerma area product (PKA,T), air kerma at the patient entrance reference point, fluoroscopy time, and number of frames. A statistical analysis was conducted to investigate the exposure variability with patient’s gender, number of treated vessels during CA and patient gender, aneurysm location and dimension, and treatment strategies during BAE. Results Patient gender was associated with a significant increase in the exposure level for both CA and BAE. For CA, TV were in term of PKA,T of 52 Gycm2 for male vs. 28 Gycm2 for female patients. For BAE, these were 113 Gycm2 for male vs. 75 Gycm2 for female patients. Exposure levels increased significantly with the number of treated vessels in CA. TV were 20 Gycm2 for one vessel vs. 77 Gycm2 for 5–6 vessels CA. For BAE, aneurysm location was also a key factor that affects the patient exposure. TV were 55 Gycm2 for aneurysms grouped in location 1 vs. 105 Gycm2 for those grouped in location 2. Conclusion Male gender, number of treated vessels, and aneurysm location are key parameters affecting patient exposure during CA and BAE procedures. Keywords Neuroradiology procedures . Patient exposure . Typical value . Radiation protection
Introduction Neuroradiology procedures (NP) are a valuable asset in the diagnosis, treatment, and management of various disorders affecting the brain, the head and neck region, and the spine
* Chadia Rizk [email protected] 1
Lebanese Atomic Energy Commission, National Council for Scientific Research, Beirut 11-8281, Lebanon
2
Department of Neuroradiology, Sacre Coeur Hospital, Baabda, BP 116, Lebanon
3
Department of Radiology, Hotel Dieu de France University Medical Center, Saint Joseph University, Beirut, Lebanon
4
Radiology and Nuclear Medicine Department, Paris-Sud University Hospitals, 94270 Le Kremlin-Bicetre, France
and spinal cord. Endovascular treatment and embolization are performed for intracranial aneurysms, arteriovenous malformations, and dural arteriovenous fistulas, in addition to stroke, carotid artery stenosis, subarachnoid hemorrhage treatments, etc. NP improve morbidity, mortality, and quality of li
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