COMPARATIVE STUDY
JOURNAL ARTICLE
VALIDATION STUDY
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In vivo validation of Dosemap software use in interventional cardiology with dosimetrics indicators and peak skin dose evaluation.

OBJECTIVES: The aim of this study was to determine the accuracy of DoseMap™ software as compared to gafchromic film in real clinical practices.

BACKGROUND: The radiation exposure from cardiovascular procedures could expose patients to potential risk of cancer and/or skin injury. New tools like Dosemap software were developed to estimate the patient skin dose in the cardiac catheterization laboratory. However, little data are available to validate this estimation of patient radiation skin dose.

METHODS: This is a prospective cross-sectional study comparing the peak skin dose (PSD) measured by gafchromic film used as reference with an estimated PSD given by Dosemap software, in patients with BMI > 30 kg/m2 undergoing elective diagnostic and/or therapeutic interventional cardiology procedures, from April 2016 to December 2016, at the Brest University Hospital Centre, France.

RESULTS: After four exclusions of patients for poor quality of gafchromic films, 90 patients were included, with 58 angiography (67.4%), 14 percutaneous interventions (16.3%), and 14 both (16.3%). The median PSDDosemap and PSDFilm were similar with 157 mGy [IQR: 99; 273] versus 158 mGy [IQR: 101; 295] (P = 0.65), respectively, with an excellent correlation (r = 0.95). The comparison between cumulative air kerma and PSDFilm was different 366 mGy [IQR: 246; 575] versus 158 mGy [IQR: 101; 295] (P < 0.01) with moderate correlation (r = 0.79). No correlation was found between the dose area product and PSDFilm (r = 0.51).

CONCLUSION: DoseMap is an effective and valid method as compared to gafchromic films to estimate PSDs during interventional cardiologic procedures.

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