RESUMEN
Active personal dosimeters (APD) supply real-time data on radiation dose rates and equivalent doses, enabling reduction of operator exposure to radiation in diagnostic and surgical procedures. Data from the use of the Raysafe i2 APD system in an angiography room are reported. Preliminary characterisation of the APD system was first carried out in terms of angular dependence and of Hp(10) response during the simulation of five typical surgical protocols. Reference measurements, simultaneously obtained from TLDs, were used to obtain a correction factor. APD data for patients and for primary and secondary operators were then recorded over 52 surgical procedures. The correlation between kerma air product (KAP) and reference point air kerma (Kar) and operator dose as a function of position with respect to the source of radiation is reported. The data indicate that the APD system could help operators to optimise behaviours and use of room protection to effectively minimise radiation dose.
Asunto(s)
Abdomen/diagnóstico por imagen , Encéfalo/diagnóstico por imagen , Neurorradiografía/métodos , Exposición Profesional/análisis , Fantasmas de Imagen , Monitoreo de Radiación/instrumentación , Protección Radiológica/métodos , Radiología Intervencionista/métodos , Angiografía , Fluoroscopía , Humanos , Dosis de RadiaciónRESUMEN
Uterine arteriovenous vascular malformations (UAVM) are uncommon vascular diseases, occurring during reproductive age. Patients affected by UAMVs usually present with recurrent pregnancy loss or menorrhagia. Initial evaluation of UAVMs is made with ultrasonography (US) and US-Doppler. Magnetic resonance is used when a UAMV is suspected at US. Treatment can be surgical (hysterectomy or surgical removal of AVM), or with selective uterine arterial embolization. We report a case of UAMV, from its clinical signs to diagnostic confirmation and subsequent treatment.