Gammex Phantom 404 LE, User Manual

Page 1: ...404 LE Precision Small Parts Phantom User s Guide...

Page 2: ...6 Evaluating the Phantom 7 Target Configuration 11 Cystic Targets 11 Pin Targets 11 Resolution Target Groups 11 Phantom Specifications 13 Physical Specifications 13 Tissue Mimicking Background Materi...

Page 3: ...s depths Cyst imaging Accuracy of electronic calipers Depth of penetration Image uniformity Vertical and horizontal distance calibration Focal zone registration The 404 LE uses a tissue mimicking gel...

Page 4: ...e desiccation Weigh your 404 LE to monitor desiccation Weigh the phantom when you first receive it and then every 6 months Record the values on the data sheet Do not drop or damage the phantom Return...

Page 5: ...ten the life of the phantom For curved transducers use water or a layer of gel Use water or a generous amount of coupling gel to ensure good transmission Do not use mineral oil baby oil or lanolin bas...

Page 6: ...l in the 404 LE is ultrasonically similar to human tissue This allows the use of normal scanner control settings and ensures that the performance measured with the phantom closely approximates the sca...

Page 7: ...ou may notice that the tissue echoes near the bottom of the phantom fade into noise The depth at which usable echoes disappear is called the depth of penetration The depth markers on the phantom label...

Page 8: ...n targets Repeat for two of the horizontal pin targets The vertical pins have 5 mm spacing while the horizontal pins have 10 mm spacing Use the pin targets to determine vertical distance accuracy and...

Page 9: ...target groups and compare the resolution at various depths Axial resolution may change with depth 8 Scan the nearest cystic target group Each target should be round with a clean black appearance and...

Page 10: ...he dead zone target group The dead zone targets can also be used to measure lateral resolution in the extreme near field of the transducer Note The highest dead zone pin you can see should be the poin...

Page 11: ...Targets Diameter 0 1 mm Vertical spacing 5 mm at 1 to 9 cm deep Horizontal spacing 10 mm at 1 and 5 cm deep Resolution Target Group 1 3 5 and 6 cm deep All acoustic measurements made at 4 5 MHz 22 C D...

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Page 13: ...surface Composite film Case material ABS plastic Pin target material Nylon monofilament Tissue Mimicking Background Material Water based gel with appearance of human tissue Speed of sound 1540 10 m s...

Page 14: ...ch attenuation as there would be if the higher frequency were used to generate the pulses at the transducer So higher frequency resolution occurs for greater depths within the subject than if conventi...

Page 15: ...ontrolled environments the phantom weight should be checked every six months Phantoms used in high temperatures low humidity environments or in mo bile situations should be tested more frequently As t...

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Page 18: ...18 Notes...

Page 19: ...19 Notes...

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