Sentence examples for phantom quality from inspiring English sources

Is it the "phantom quality" of knowing where the story of any song ends, after the session is over and everyone goes home?

In accordance with the conditions for NEMA phantom quality assurance measurements in nuclear medicine [16], the average activity concentration never exceeded 10 kBq/ml.

Phantom quality assurance data done before each patient study showed that signal-to noise ratio within the coil ring from where measurements of contrast were derived was 501±97, indicating that signal in this region was well above the noise floor, confirming the validity of the contrast measurements.

The development of automatic methods for phantom image quality assessment (and patient image quality assessment) together with the use of advanced IT technologies (e.g. large-scale archives, data-mining methods, expert system technique) is required for supporting users in the optimisation process.

To determine the optimal reconstruction parameters for best NEMA IQ phantom image quality with high lesion contrast and low background noise, the signal-to-noise ratio (SNR) was selected as a representative image quality measure and was calculated for each active sphere and for all listed reconstruction parameter combinations.

Calibration with the manufacturer's spine phantom and quality control analysis was performed daily.

We performed phantom image quality testing on our digital unit (GE 2000D), using the TORMAX and TORMAM phantoms.

We did not use phantoms for quality assurance and scans were not subjected to central interpretation.

This study demonstrates, using a NEMA NU 4 2008 image quality phantom and a homemade phantom, as well as a large cohort of abdominal tumor-bearing mice and rats, that the use of iodinated contrast media for SA-PET imaging significantly improves abdominal tumor delineation and diagnostic performance at the expense of a limited impact on accuracy of quantitative values and image quality parameters.

In this regard, Aide et al. [ 32] and Siepel et al. [ 33] simulated experiments with multiple mice by using the NEMA NU 4 image quality phantom at different positions within the FOV and adding up to three "mouse phantoms", i.e. vials containing the same activity concentration as used in the NEMA NU 4 phantom and mimicking attenuation and scatter events.

A study by Ziegler et al. found that the MR-derived attenuation map of the NEMA image quality phantom, obtained from the Siemens Biograph mMR PET/MRI scanner, only captured the photon attenuation of water inside the phantom but failed to capture the plastic housing of the phantom itself, which significantly degraded both the quantitative accuracy and background variability of the PET images.