Effect of Model-Based Iterative Reconstruction on CT Number Measurements Within Small (10–29 mm) Low-Attenuation Renal Masses

Abstract

Veo MBIR has no significant or consistent effect on attenuation measurements within small (10-29 mm) low-attenuation renal masses and is therefore unlikely to change clinically accepted attenuation thresholds for renal mass characterization.

Third version of vendor-specific model-based iterativereconstruction (Veo 3.0): evaluation of CT image quality in the abdomen using new noise reduction presets and varied slice optimization

“…Our study found no significant difference in mean attenuation between different image sets. This has also been demonstrated in prior studies comparing Veo 3.0 to FBP, ASIR and Veo 2.0, 20,24 supporting maintained accuracy of MBIR CT attenuation for lesion characterization even when performed with different noise reduction and resolution preference presets.…”

Automatic spectral imaging protocol and iterative reconstruction for radiation dose reduction in typical hepatic hemangioma computed tomography with reduced iodine load: a preliminary study

“…26 Presently, the ASiR technique has become a routine clinical practice instead of the conventional filtered back projection algorithm. Based on the recommendations of the manufacturer and our practical experience, ASiR weighting was set at 30% in the conventional 120-kVp CT and monochromatic spectral image at 69 keV level; moreover, 50% ASiR weighting in monochromatic spectral image at 52 keV level was based on previous study 17,27 and the current phantom experiment. Low monochromatic energy images coupled with 50% ASiR weighting can effectively suppress the increased image noise due to the lack of photon flux.…”