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VERIFICATION OF INDICATED SKIN ENTRANCE AIR KERMA FORCARDIAC X-RAY-GUIDED INTERVENTION USING GAFCHROMIC FILM
Linköping University, Department of Medical and Health Sciences, Division of Radiological Sciences. Region Östergötland, Center for Surgery, Orthopaedics and Cancer Treatment, Department of Radiation Physics. Linköping University, Faculty of Medicine and Health Sciences.
Region Östergötland, Center for Surgery, Orthopaedics and Cancer Treatment, Department of Radiation Physics. Linköping University, Department of Medical and Health Sciences, Division of Radiological Sciences. Linköping University, Center for Medical Image Science and Visualization (CMIV). Linköping University, Faculty of Medicine and Health Sciences.ORCID iD: 0000-0003-3352-8330
2015 (English)In: Radiation Protection Dosimetry, ISSN 0144-8420, E-ISSN 1742-3406, Vol. 169, no 1-4, 245-248 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this work was to verify the indicated maximum entrance surface air kerma (ESAK) using a GE Innova IGS 520 imaging system during cardiac interventional procedures. Gafchromic XR RV3 films were used for the patient measurements to monitor the maximum ESAK. The films were scanned and calibrated to measure maximum ESAK. Thermoluminescent dosemeters were used to measure the backscatter factor from an anthropomorphic thorax phantom. The measured backscatter factor, 1.53, was in good agreement with Monte Carlo simulations but higher than the one used by the imaging system, 1.20. The median of the ratio between indicated maximum ESAK and measured maximum ESAKwas 0.68. In this work, the indicated maximum ESAK by the imaging system’s dose map model underestimates the measured maximum ESAK by 32 %. The threshold ESAK for follow-up procedures for patient with skin dose in excess of 2 Gy will be reduced to 1.4 Gy.

Place, publisher, year, edition, pages
2015. Vol. 169, no 1-4, 245-248 p.
National Category
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
URN: urn:nbn:se:liu:diva-122967DOI: 10.1093/rpd/ncv460PubMedID: 26541185OAI: oai:DiVA.org:liu-122967DiVA: diva2:875260
Available from: 2015-12-01 Created: 2015-12-01 Last updated: 2016-07-15

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Available from 2016-11-04 00:00

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Nilsson Althén, JonasSandborg, Michael
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Division of Radiological SciencesDepartment of Radiation PhysicsFaculty of Medicine and Health SciencesCenter for Medical Image Science and Visualization (CMIV)
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Radiation Protection Dosimetry
Radiology, Nuclear Medicine and Medical Imaging

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