Assessment of patient's peak skin dose during abdominopelvic embolization using radiochromic (Gafchromic) films

Abstract

Dosimetry using radiochromic film is only appropriate for HCE, AEE and AUE, whereas dose-mapping systems present a more suitable solution for all embolizations including those with AK that occasionally exceed 2Gy.

Validation of a dose tracking software for skin dose map calculation in interventional radiology

“…These results are in agreement with a previous work [51], based on a large number of Monte Carlo simulations, which highlights a variation of about 20%. In the clinical procedures, the primary and the secondary angles are often changed; to consider these variations in the algorithm, for all irradiation events the table attenuation factor (calculated by the physicist for each device) is adjusted for the beam angle, as described in (3). The correction used turns out to be in agreement with experimental data, as shown in Fig.…”

“…The GafChromic® XR-RV3 films have been widely used to estimate skin doses during interventional procedures [23][24][25][26][27].A calibration curve is necessary to evaluate the response of the GafChromic® XR-RV3 film as a function of film exposure since their response is not linear with the dose. As reported in the literature [45], the beam quality choice for the calibration is a key point when additional filtration and kVp are automatically controlled.…”

“…The risk associated with X-Rays should be taken into consideration as the patient skin dose can exceed the threshold of tissue reactions (2 Gy). Several cases of radiation-induced deterministic reactions following exposure in interventional procedures, such as erythema and hair loss, have been reported in the literature [1][2][3][4][5][6][7].…”

“…It will allow faster and more accurate monitoring of patient follow-up in the future. [23][24][25][26]: these methods, however, interfere with clinical practice and are expensive or time-consuming. Nowadays, the newest angiographic systems have real-time skin dose calculation software, such as Dose Tracking System (DTS) by Canon Medical systems [27] and Dose Map by GE Healthcare [28].…”

Calibration of Gafchromic XR-RV3 film under interventional radiology conditions

“…11 Since this dosimetric method is a relative one, the proper calibration curve needs to be determined prior to its use for dose assessment. 2,3,4,[10][11][12][13][14] In the literature there is still an insufficient number of detailed descriptions of the calibration curve fitting analysis for XR-RV3 films. Due to the relatively low dose rate of ionizing radiation of X-ray units used in interventional radiology compared to radiotherapeutic units, this process performed in clinical conditions is somewhat time-consuming.…”