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MODEL 535-H 

BASIC QUALITY ASSURANCE 

PHANTOM 

Revised 

June 2014

ATS Laboratories, Incorporated 

900 Asbury Ave

Norfolk, VA 23513 

Tel: (800) 617-1177 Email: [email protected] 

Website: atslaboratories-phantoms.com

Содержание 535-H

Страница 1: ...MODEL 535 H BASIC QUALITY ASSURANCE PHANTOM Revised June 2014 ATS Laboratories Incorporated 900 Asbury Ave Norfolk VA 23513 Tel 800 617 1177 Email admin cirsinc com Website atslaboratories phantoms com ...

Страница 2: ...Diagram 5 Dead Zone 6 Vertical Measurement Calibration 6 Horizontal Measurement Calibration 7 Axial and Lateral Resolution 8 Focal Zone 8 Sensitivity Maximum Depth of Penetration 9 Functional Resolution Definition and Fill in 10 Care and Handling of Rubber Based Phantoms 11 Warranty 11 Sample Ultrasound Performance Record ...

Страница 3: ...To ensure measurement accuracy ATS incorporates a thermometer strip affixed to the outside surface of the phantom housing The sound velocity of most diagnostic imaging systems is calibrated to 1 540 meters per second mps the assumed average velocity of sound through human soft tissue The rubber based tissue mimicking material has a sound velocity of 1450 mps at 0 5dB cm Mhz at room temperature 23 ...

Страница 4: ...Scan Surface 1 Scan Surface 3 Scan Surface 2 Scan Surface 4 ...

Страница 5: ...umber of Targets 17 Interval Spacing 1 cm Depth 1 17 cm Horizontal Group Number of Targets 10 Number of Groups 2 Interval Spacing 2 cm Depth 5 cm from Scanning Surface 1 5 cm from Scanning Surface 3 Dead Zone Group Number of Targets 9 Lateral Displacement 5 mm Interval Spacing 1 mm Depth 2 10 mm Axial Lateral Resolution Group Number of Targets 6 Lateral Displacement 1 0 mm Interval Spacing 5 4 3 2...

Страница 6: ... depth of the dead zone 7 Document the depth measurement on the quality assurance record Results If the depth of the dead zone is greater than 10 0 mm corrective action should be considered by the individual Ultrasound Department VERTICAL MEASUREMENT CALIBRATION Description and Reason For Testing Vertical distance measurements are obtained along the axis of the sound beam Proper diagnosis is depen...

Страница 7: ...ration Linear array scanning systems should use 1 scanning surfaces Sector scanning systems should use 3 scanning surfaces 1 Place the phantom on a clean flat surface 2 Apply an adequate amount of low viscosity gel or water to the scan surface If water is used fill the scanning well slowly to avoid introduction of air bubbles 3 Adjust the instrument settings TGC output etc to establish baseline va...

Страница 8: ...l liver scanning If the bottom of the phantom is seen adjust the gain settings until image goes entirely black Record these settings on the quality assurance record These settings should be used for subsequent testing 4 Position the transducer over the axial resolution group of line targets on the phantom until a clear image is obtained Freeze this image 5 Examine the image to determine if all of ...

Страница 9: ...is the focal zone Measure the width of the beam and the depth at this point 7 Document the depth of the focal zone and the measurement of the focal width on the quality assurance record Results The location of the focal zone should agree with the manufacturer s specifications and should not change with time This applies to both fixed and dynamically focused systems If changes occur corrective acti...

Страница 10: ...ystem is capable of resolving at a given depth Definition and Fill in describes the imaging system s ability to detect and display the shape and echogenic characteristics of a structure Clinically a correct diagnosis is dependent upon the system s ability to differentiate between a cystic or solid structure versus echo patterns originating from the surrounding normal tissue Testing Procedure The M...

Страница 11: ...oided since they may adversely react with the rubber based material WARRANTY Statement of Warranty ATS Laboratories Incorporated warrants this rubber based phantom for it s lifetime from the date of delivery to the purchaser that the Phantom is free from functional defects in materials and workmanship The lifetime of this phantom is estimated to be 10 years from the date of manufacturing If ATS La...

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