Assessing the Usefulness of the Quasi-Ideal Observer for Quality Control in Fluoroscopy

Abstract

Short running titleQuasi-ideal observer for quality control Our results showed that 2 , ⁄ measurements offer the high precision required in quality control constancy tests.

Signal-to-Noise Ratio Rate Measurement in Fluoroscopy for Quality Control and Teaching Good Radiological Imaging Technique

“…In fact, these and similar results are being used in training of resident radiologists in Linköping, Sweden. Tesselaar and Sandborg ( 11 ) evaluated the figures of merit of changing the dose rate, pulse rate and field of view on a Siemens Axiom Artis Zee MP. In the present study, we assessed the figures of merit of the same equipment while instead changing the phantom thickness, x-ray field size and patient couch height.…”

“…No general correlation between the physical image quality indices and clinical image quality exists ( 1 , 8–10 ) . Model observers ( 11 , 12 ) can still fulfill a role in routine quality control of the imaging system performance if most of the favorable characteristics mentioned previously are met. In addition, analysis of the effect of an imaging equipment parameter on SNR and patient dose indices, such as dose rate, mode of operation, imaging geometry, x-ray field size and photon energy, forms a basis for its clinical operation and if properly analyzed, it can be a useful teaching tool for the operator.…”