Information About Radiology
Category Image Quality Metric Term Contrast Resolution Definition of Contrast Resolution Ability To Distinguish Small Differences In Attenuation Between Adjacent Structures Notes About Contrast Resolution Important For Soft Tissue Lesion Detection
Category Image Quality Metric Term Contrast To Noise Ratio (CNR) Definition of Contrast To Noise Ratio (CNR) Difference In Signal Between Two Tissues Relative To Noise Notes About Contrast To Noise Ratio (CNR) Key For Lesion Detectability
Category Image Quality Metric Term Temporal Resolution MRI Definition of Temporal Resolution MRI Ability To Resolve Rapid Physiologic Motion Over Time Notes About Temporal Resolution MRI Important In Cardiac And Dynamic Contrast Studies
Category Image Quality Metric Term Spatial Resolution MRI Definition of Spatial Resolution MRI Smallest Distinguishable Detail In Image Determined By Matrix, FOV, And Slice Thickness Notes About Spatial Resolution MRI Higher Resolution Requires Longer Scan Time Or Higher SNR
Category Image Quality Metric Term Spatial Resolution Metric Definition of Spatial Resolution Metric Quantitative Measure Of Smallest Detail Resolvable By System Notes About Spatial Resolution Metric Assessed With Phantoms And MTF
Category Image Quality Metric Term Signal To Noise Ratio (SNR) Definition of Signal To Noise Ratio (SNR) Ratio Of Useful Signal To Background Noise Determining Image Clarity Notes About Signal To Noise Ratio (SNR) Improved By Higher Field, Coil Proximity, And Averaging
Category Image Quality Metric Term Spatial Resolution Definition of Spatial Resolution Ability To Distinguish Small Structures Determined By Focal Spot, Detector, Reconstruction Kernel, And Voxel Size Notes About Spatial Resolution Measured With Phantoms