TY - JOUR
T1 - Optimisation of patient dose and image quality in endoscopic retrograde cholangiopancreatography
T2 - A phantom-based evaluation
AU - Hadjiconstanti, Anastasia C.
AU - Messaris, Gerasimos A.T.
AU - Thomopoulos, Konstantinos C.
AU - Solomou, Aikaterini G.
AU - Panayiotakis, George S.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - A phantom-based study is presented aiming to optimise patient dose and image quality (IQ) in endoscopic retrograde cholan giopancreatography procedures, utilising a fluoroscopy system equipped with a flat panel detector. The patient thickness was simulated with various polymethyl methacrylate slabs, whilst IQ was evaluated using the Leeds test object. The main factors evaluated were phantom thickness, distance between phantom and detector, field of view and pulse rate. For all these factors, the dosemetric indices, entrance surface air kerma (ESAK) rate and ESAK per pulse, as well as the IQ parameters, signal-to noise ratio and high contrast spatial resolution, were measured. Based on these measurements, the figure of merit (FOM) was estimated. The FOM and ESAK rate values indicated the optimum combination of the factors evaluated which could provide adequate clinical information, assuring minimum patient dose.
AB - A phantom-based study is presented aiming to optimise patient dose and image quality (IQ) in endoscopic retrograde cholan giopancreatography procedures, utilising a fluoroscopy system equipped with a flat panel detector. The patient thickness was simulated with various polymethyl methacrylate slabs, whilst IQ was evaluated using the Leeds test object. The main factors evaluated were phantom thickness, distance between phantom and detector, field of view and pulse rate. For all these factors, the dosemetric indices, entrance surface air kerma (ESAK) rate and ESAK per pulse, as well as the IQ parameters, signal-to noise ratio and high contrast spatial resolution, were measured. Based on these measurements, the figure of merit (FOM) was estimated. The FOM and ESAK rate values indicated the optimum combination of the factors evaluated which could provide adequate clinical information, assuring minimum patient dose.
UR - https://www.scopus.com/pages/publications/85021375103
U2 - 10.1093/rpd/ncw276
DO - 10.1093/rpd/ncw276
M3 - Article
C2 - 27664432
AN - SCOPUS:85021375103
SN - 0144-8420
VL - 175
SP - 118
EP - 123
JO - Radiation Protection Dosimetry
JF - Radiation Protection Dosimetry
IS - 1
M1 - ncw276
ER -
