Fixed Defect
Category Cardiac Interpretation Term Fixed Defect Definition of Fixed Defect Perfusion Defect Present On Both Stress And Rest Imaging Suggesting Scar Or Infarction Notes About Fixed Defect Correlate With Clinical History
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Stenosis Gradient
Category Cardiac/Vascular Measurement Term Stenosis Gradient Definition of Stenosis Gradient Pressure Or Velocity Gradient Across A Narrowed Valve Or Vessel Notes About Stenosis Gradient Used To Quantify Severity
Oscillatory Flow
Category Doppler Descriptor Term Oscillatory Flow Definition of Oscillatory Flow Bidirectional Flow Pattern With Rapid Alternation Often Seen In Small Vessels Or Collaterals Notes About Oscillatory Flow Interpret In Context Of Vascular Resistance
Adult Dosing
Category Dosimetry Practice Term Adult Dosing Definition of Adult Dosing Standardized Activity Recommendations For Adults Based On Indication And Radiopharmaceutical Notes About Adult Dosing May Be Adjusted For Body Habitus And Renal Function
Ultrasound Guided Catheterization
Category Procedure Term Ultrasound Guided Catheterization Definition of Ultrasound Guided Catheterization Real Time Ultrasound Assistance For Vascular Or Drainage Catheter Placement Notes About Ultrasound Guided Catheterization Improves Success And Reduces Complications
Pitch
Category Acquisition Parameter Term Pitch Definition of Pitch Table Movement Per Rotation Divided By Total Collimation; Affects Scan Speed And Dose Notes About Pitch Pitch >1 Speeds Scan But Alters Image Noise And Resolution
Near Field (Fresnel Zone)
Category Physics Term Near Field (Fresnel Zone) Definition of Near Field (Fresnel Zone) Region Close To The Transducer Where Beam Is Not Fully Formed Notes About Near Field (Fresnel Zone) Image Quality Varies With Probe Design
Chest Tube Position
Category Procedure Check Term Chest Tube Position Definition of Chest Tube Position Radiographic Confirmation Of Thoracostomy Tube Tip And Side Port Locations Notes About Chest Tube Position Essential After Tube Placement
Cost Effectiveness Nuclear Medicine
Category Health Economics Term Cost Effectiveness Nuclear Medicine Definition of Cost Effectiveness Nuclear Medicine Assessing Economic Value Of Nuclear Medicine Procedures Relative To Clinical Benefit Notes About Cost Effectiveness Nuclear Medicine Informs Policy And Reimbursement
End Diastolic Velocity (EDV)
Category Doppler Measurement Term End Diastolic Velocity (EDV) Definition of End Diastolic Velocity (EDV) Velocity At End Of Diastole On Spectral Doppler Notes About End Diastolic Velocity (EDV) Useful For Resistance Calculations