Low‐dose CT imaging using a regularization‐enhanced efficient diffusion probabilistic model

"Quantitative Modeling and Optimization of Radiation Dose in Routine CT Imaging: Balancing Image Quality and Dose Reduction under the ALARA Principle Framework"

Background: Computed tomography is indispensable in modern diagnostic imaging, but it is also a major contributor to cumulative medical exposure from ionizing radiation. Under the ALARA framework, dose optimization is not

Determination of contrast medium dose for hepatic CT enhancement with improved body size dependency using a non-linear analysis based on pharmacokinetic principles.

AIM To propose a pharmacokinetic non-linear analysis method to determine contrast medium (CM) dose for computed tomography (CT) hepatic enhancement to improve body size dependency and validate the proposed CM dose determination method through a clinical study. MATERIALS AND METHODS Enhancement data of 105 patients wh...

Current Medical Imaging

Assessing effects of low‐dose CT attenuation correction on quantification and image quality on a LAFOV PET system with a modified NEMA‐IQ phantom

Abstract Background Over the past decades, efforts have been directed toward increasing the sensitivity of PET systems to enable low‐dose PET imaging and shorter scan times. The Biograph Vision Quadra PET/CT scanner (Siemens Healthineers, Knoxville, TN, USA) combines an increased solid angle coverage with time of fligh...

Current Medical Imaging

Background While multiple imaging modalities have been developed for the evaluation of biliary and pancreatic ducts, none is considered ideal. Dual-layer Spectral Computed Tomography (DSCT) offers potential advantages through dual-energy acquisition and spectral imaging, but its application for biliopancreatic ducts re...

A novel integrated circular radiography (ICRAD) phantom for evaluating non‐uniform image quality metrics in radiography

Anode heel effects have been shown to cause a non‐uniform distribution of X‐ray photon fluence, and anode angle could cause focal spot size variations across field. However, no previous study has investigated their effects on image quality metrics in radiography.