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Summary of Contents for Gammex 403 LE
- Page 1 403 LE Precision Multi-Purpose Phantoms User’s Guide...
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Page 2: Table Of Contents
Table of Contents Introduction..................3 Caring for your 403 LE..............4 Scanning the 403 LE..............5 A Guided Tour of the 403 LE............6 Evaluating the Phantom..............7 Target Specifications..............11 Cystic Targets................11 Pin Targets..................11 Resolution Target Groups..............11 Phantom Specifications.............13 Physical Specifications..............13 Tissue Mimicking Background Material........13 Low Scatter (Anechoic) Cysts............13... -
Page 3: Introduction
Limitations of Use The 403 LE is designed to be used to aid in the Quality Control testing and monitoring of ultrasound instruments only. The 403 LE is not to be used to make diagnostic deci-... -
Page 4: Caring For Your 403 Le
Return the phantom for inspection and/or repair if it has been dropped or damaged. Physical damage to the case will cause premature desiccation. Gammex recommends annual servicing of your 403 LE to ensure proper operation. Our qualified service technicians will check for desiccation and provide any needed... -
Page 5: Scanning The 403 Le
Scanning the 403 LE • Always place the phantom on a stable, level surface for scanning. • The phantom comes ready to scan. Do not peel off surface material. • Use water or a generous amount of coupling gel to ensure good transmission. Do not use mineral oil, baby oil or lanolin-based gels as a coupling medium. -
Page 6: A Guided Tour Of The 403 Le
A Guided Tour of the 403 LE The Tissue Mimicking Phantom 403 LE measures the image quality of ultrasound scanning systems. The tissue mimicking gel in the 403 LE is ultrasonically similar to human tissue. The speed of sound, attenuation, and the nonlinearity parameter (B/A) all correspond very well to measured values seen in human tissue. -
Page 7: Evaluating The Phantom
Evaluating the Phantom Remember • The phantom comes ready to scan. Do not peel off surface material. • Never press the transducer into the scanning surface. • Always clean and dry the scanning surface after each use. Never leave coupling gel or water on the scanning surface for more than a few hours. - Page 8 Move the transducer across the scanning surface while observing the locations of the targets. Notice how the smooth texture of the tissue mimicking gel emphasizes image non-uniformities and artifacts, making them easier to detect. Scanning an area without targets is a good way to test for image uniformity. Decrease gain controls to highlight pin targets.
- Page 9 Decrease the image depth and examine the axial resolution target group at 3 cm. Notice how the images of the lower pin targets may begin to merge. The smallest distance between two pins that can be clearly resolved with no vertical overlap is called the scanner’s axial resolution.
- Page 10 Scan the nearest cystic target group. Each target should be round with a clean black appearance and well defined edges. Bright specular echoes at the top and bottom of the targets are normal. Measure the dimensions of the 6 mm cystic target to check the image geometry. Use calipers to measure from top to bottom and side to side.
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Page 11: Target Specifications
Target Specifications Cystic Targets Diameters................2, 4, and 6 mm Placement..............3, 8, and 14 cm deep Pin Targets Diameter...................0.1 mm Vertical spacing............10 mm at 2 to 4 cm deep ..............20 mm at 4 to 16 cm deep Horizontal spacing...........30 mm at 2 and 12 cm deep ........additional pin spaced at 10 mm in shallow set Resolution Target Group .................3, 8, and 14 cm deep... -
Page 13: Phantom Specifications
Phantom Specifications Physical Specifications Weight..............Approx. 2.8 kg (6 lbs. 5 oz.) Dimensions..............23.2 x 8.25 x 18.5 cm ................(9.25 x 3.25 x 7.25 in.) Case material..............extruded ABS plastic Pin target material............Nylon monofilament Scanning surface..............Composite film Tissue Mimicking Background Material Water-based gel with the appearance of human tissue. Speed of sound................1540±10 m/s Temperature dependence on speed of sound.........1.5 m/s/ºC Attenuation coefficient........... -
Page 14: Harmonic Imaging
Recently, we have developed the capacity to measure the value of B/A for the tissue-mimicking materials in Gammex phantoms and have found it to lie in the range for human soft tissue, meaning B/A is between 6 and 7 ___________________________________________ Gong, X. -
Page 15: Phantom Desiccation
As the phantom desiccates, the scanning surface may flatten out. It is suggested that the phantom be sent in for rejuve- nation once it has lost 15 grams of its total weight. When this occurs, contact GAMMEX (1-800-GAMMEX-1). -
Page 16: Product Warranty
THERE ARE NO EXPRESS OR IMPLIED WARRANTIES WHICH EXTEND BEYOND THE WARRANTIES SET FORTH ABOVE. SELLER MAKE NO WARRANTY OF MERCHANTABIL- ITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE PRODUCTS OR ANY PARTS THEREOF. © 2003 GAMMEX- 007179-00-04 Your warranty may be registered at http://www.gammex.com/warranty.asp... -
Page 17: Sales And Service
Sales and Service GAMMEX is committed to satisfying our customers’ needs. If you have any questions, comments, or suggestions regarding our products and service, please call or fax us. Sales Department hours are Monday through Friday, 7:30 am to 5:00 pm Central Time. - Page 18 Notes:...
- Page 19 Notes:...
- Page 20 Gammex, Inc. P.O. Box 620327 Middleton, WI 53562-0327 USA 1 800 GAMMEX 1 (426-6391) 1 608 828 7000 Fax: 1 608 828 7500 www.gammex.com e-mail: sales@gammex.com Gammex-RMI LTD Broadway Business Centre 32A Stoney Street Nottingham NG1 1LL United Kingdom +44 0115 9247188 Fax: +44 0115-9247189 e-mail: uksales@gammex.com...
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