Motion Unsharpness
Category Image Degradation Term Motion Unsharpness Definition of Motion Unsharpness Blurring Caused By Patient Or Organ Motion During Exposure Notes About Motion Unsharpness Reduced By Shorter Exposure Time And Immobilization
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Vendor Performance Scorecard
Category Procurement Tool Term Vendor Performance Scorecard Definition of Vendor Performance Scorecard Metrics And Scores To Evaluate Vendor Reliability, Quality, And Support For Imaging Supplies Notes About Vendor Performance Scorecard Informs Contract Decisions
Edge Enhancement
Category Image Filter Term Edge Enhancement Definition of Edge Enhancement Processing That Accentuates Boundaries To Improve Perceived Sharpness Notes About Edge Enhancement May Increase Noise And Artifacts If Overused
Spatial Resolution Metric
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
Signal Averaging (NEX)
Category Acquisition Strategy Term Signal Averaging (NEX) Definition of Signal Averaging (NEX) Repeating Acquisition To Improve SNR At Cost Of Increased Scan Time Notes About Signal Averaging (NEX) Also Called Number Of Excitations (NEX)
Turbulence Index
Category Flow Metric Term Turbulence Index Definition of Turbulence Index Quantitative Measure Of Flow Disturbance Derived From Spectral Broadening Notes About Turbulence Index Research And Advanced Vascular Assessment
Quality Control (QC)
Category Operational Practice Term Quality Control (QC) Definition of Quality Control (QC) Routine Tests And Procedures To Ensure System Performance And Safety Notes About Quality Control (QC) Includes Daily, Weekly, And Annual Checks
Streaming Artifact
Category Doppler Artifact Term Streaming Artifact Definition of Streaming Artifact Apparent Flow Pattern Caused By Probe Motion Or Tissue Movement Notes About Streaming Artifact Recognize To Avoid Misinterpretation
Peripheral Vascular Resistance
Category Hemodynamic Concept Term Peripheral Vascular Resistance Definition of Peripheral Vascular Resistance Resistance To Flow In Peripheral Circulation Reflected In Doppler Waveforms Notes About Peripheral Vascular Resistance Affects Pulsatility And Diastolic Flow
PET CT Safety
Category Operational Practice Term PET CT Safety Definition of PET CT Safety Radiation Protection, Patient Preparation, And Emergency Procedures Specific To PET CT Notes About PET CT Safety Includes Contamination Control And Waste Management