A real time active pixel dosimeter for interventional radiology

Paolucci, M.; Battisti, D.; Biasini, M.; Checcucci, B.; Lorenzo, Roberto Di; Esposito, A.; Fanò, L.; Passeri, D.; Placidi, P.; Servoli, L.

doi:10.1016/j.radmeas.2011.07.006

Cited by 16 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sensor is used as detector element for the Real-time Active PIxel Dosimetry (RAPID) INFN project. The project is focused on implementing a wireless dosimeter system for real-time measurement and on-line monitoring of interventional radiology procedures [9]. Figure 1 shows the architecture of the proposed system; the main features are: wireless communication, no external powering, small form factor and data processing.…”

Section: Description Of Dosimeter Prototypementioning

confidence: 99%

Performance of CMOS imager as sensing element for a Real-time Active Pixel Dosimeter for Interventional Radiology procedures

et al. 2014

View full text Add to dashboard Cite

Staff members applying Interventional Radiology procedures are exposed to ionizing radiation, which can induce detrimental effects to the human body, and requires an improvement of radiation protection. This paper is focused on the study of the sensor element for a wireless real-time dosimeter to be worn by the medical staff during the interventional radiology procedures, in the framework of the Real-Time Active PIxel Dosimetry (RAPID) INFN project. We characterize a CMOS imager to be used as detection element for the photons scattered by the patient body. The CMOS imager has been first characterized in laboratory using fluorescence X-ray sources, then a PMMA phantom has been used to diffuse the X-ray photons from an angiography system. Different operating conditions have been used to test the detector response in realistic situations, by varying the X-ray tube parameters (continuous/pulsed mode, tube voltage and current, pulse parameters), the sensor parameters (gain, integration time) and the relative distance between sensor and phantom. The sensor response has been compared with measurements performed using passive dosimeters (TLD) and also with a certified beam, in an accredited calibration centre, in order to obtain an absolute calibration. The results are very encouraging, with dose and dose rate measurement uncertainties below the 10% level even for the most demanding Interventional Radiology protocols.

show abstract

Section: Description Of Dosimeter Prototypementioning

confidence: 99%

Performance of CMOS imager as sensing element for a Real-time Active Pixel Dosimeter for Interventional Radiology procedures

et al. 2014

View full text Add to dashboard Cite

show abstract

“…• reducing the same yearly dose received, the specialists could perform a greater number of treatments, and therefore patient's waiting time could be reduced, an important achievement when large queues are present. In order to provide a portable instrumentation to be used during the interventional procedure we have proposed a Real-time Active Pixel Dosimeter (RAPID project) [6]. The block diagram of the proposed architecture (figure 1) includes a sensor featuring an Active Pixel Sensor (APS) architecture, a digital signal processing unit, a control unit, a wireless interface, a Graphical User Interface to manage collected data.…”

Section: Jinst 7 P04004mentioning

confidence: 99%

An active pixel sensor to detect diffused X-ray during Interventional Radiology procedure

et al. 2012

View full text Add to dashboard Cite

Interventional radiologists and staff members are frequently exposed to protracted and fractionated low doses of ionizing radiation due to diffused X-ray radiation. The authors propose a novel approach to monitor on line staff during their interventions by using a device based on an Active Pixel Sensor developed for tracking applications. Two different photodiode configurations have been tested in standard Interventional Radiology working conditions. Both options have demonstrated the capability to measure the photon flux and the energy flux to a sufficient degree of uncertainty.

show abstract