Dose Load during Angiographic Procedures RCA Stenting

This article is a continuation of the study of the dose load received by an interventional cardiologist during angiographic procedures and particularly during RCA stenting. To calculate the dose load, dosimetric measurements of the effective dose were carried out while working with a Philips Allura Xper FD10 angiographic system in the invasive department of the Special Hospital for Active Treatment in Cardiology, Varna, Bulgaria. The measurements were carried out for the two operating modes of the angiographic system—radio- graphy and pulse fluoroscopy. In order to obtain a clear assessment of the received dose of the principal cardiologist, the measurements were carried out for three positions of the patient table—zero, lowest and highest position, as well as for three control points: “Head”, “Gonads”, “Feet”. In this procedure following projections are used: LAO-cranial—as first basic projection, RAO- cranial—as second basic and Pure Сranial—as third basic projection. For this reason, calculations have been made for each of these projections. The results convincingly show maximum dose load when radiography is used, although the duration of radiography is significantly shorter than the duration of pulse fluoroscopy. A concluded that the position of the patient table is important during the work of the principal cardiologist and the use of individual radiation protection equipment is not only recommended, but should be mandatory, as indicated in both Bulgarian and international legislation.