Deficiencies of active electronic radiation protection dosemeters in pulsed fields

Abstract

Nowadays nearly all radiation fields used for X-ray diagnostics are pulsed. These fields are characterised by a high dose rate during the pulse and a short pulse duration in the range of a few milliseconds. The use of active electronic dosimeters has increased in the past few years, but these types of dosimeters might possibly not measure reliably in pulsed radiation fields. Not only personal dosimeters but also area dosimeters that are used mainly for dose rate measurements are concerned. These cannot be substituted by using passive dosimeter types. The characteristics of active electronic dosimeters determined in a continuous radiation field cannot be transferred to those in pulsed fields. Some provisional measurements with typical electronic dosimeters in pulsed radiation fields are presented to reveal this basic problem.

Personal Dosimetry in Direct Pulsed Photon Fields With the Dosepix Detector

“…A pulsed radiation field is defined as ionizing radiation with a constant dose rate for pulse durations shorter than 10 s [1]. With this definition, most X-ray tubes in medical applications are classified as pulsed radiation emitters [2]. The staff of interventional radiology, interventional cardiology (IR/IC), or veterinary medicine is not exposed to the direct radiation field during X-ray examinations.…”

Hybridized Nanogenerators for Multifunctional Self-Powered Sensing: Principles, Prototypes, and Perspectives

“…Nowadays, the health of unborn babies is a considerable issue faced by new parents. However, electronic products have become an indispensable part of daily life, such as phones, computers, or tablet PCs, which will produce radiation pollution all the time (Psenakova and Hudecova, 2009;Ankerhold et al, 2009). In order to protect the pregnant from electromagnetic radiation injury and monitor the health conditions, Zhang et al designed an electromagnetic shielding hybrid nanogenerator (ES-HNG) with a large-sized stretchable TENG as the substrate and several pyroelectric-piezoelectric nanogenerators (PPENGs) that uniformly dispersed on it to form an island structure, as illustrated in Figure 10A (Zhang et al, 2018).…”

Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard

“…Dosimeters are routinely calibrated in well-defined reference radiation fields produced according to relevant ISO standards (ISO 2019a and b) under laboratory conditions, but their accuracy can significantly differ when they are used in real radiation monitoring conditions in routine dosimetry monitoring practices (Ankerhold et al 2009; EC 2009; Krzanovic et al 2017; Knezevic et al 2021). Thus, characterization (i.e., type tests) of passive dosimetry systems following procedures and criteria set by internationally recognized standards is necessary.…”