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Related Manuals for Gammex Phantom 404 LE
Summary of Contents for Gammex Phantom 404 LE
- Page 1 404 LE Precision Small Parts Phantom User’s Guide...
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Page 2: Table Of Contents
Table of Contents Introduction..................3 Caring for your 404 LE..............4 Scanning your 404 LE...............5 A Guided Tour of your 404 LE............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 Material..........13 Harmonic Imaging................14 Phantom Desiccation..............15 Charts and Graphs................15... -
Page 3: Introduction
Introduction The 404 LE phantoms are designed to measure the image quality of high frequency trans- ducers and intra-cavity ultrasound scanning systems. These Precision Small Parts Phan- toms permit precise measurements of resolution for testing the following image indicators: • Dead zone •... -
Page 4: Caring For Your 404 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 404LE to ensure proper operation. Our qualified service technicians will check for desiccation and provide any needed... -
Page 5: Scanning Your 404 Le
Scanning your 404 LE • Always place the phantom on a stable, level surface for scanning. • The phantom comes ready to scan. Do not peel off the surface material. • Do not press the transducer into the scanning surface. This damages the scanning surface and will shorten the life of the phantom. -
Page 6: A Guided Tour Of Your 404 Le
A Guided Tour of your 404 LE The Precision Small Parts Phantom 404 LE is an instrument for measuring the image quality of small parts and intra-cavity ultrasound scanning systems. The tissue mimicking gel 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 scanner’s performance in a clinical... -
Page 7: Evaluating The Phantom
Evaluating the Phantom Remember • The phantom comes ready to scan. Do not peel off the 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 1 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 Measure the dimensions of the 4 mm cystic target to check the image geometry. Use the calipers to measure from top to bottom and side to side. Repeat with the other cystic target groups as part of the cyst imaging test. Decrease image depth to the minimum and examine the dead zone target group.
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Page 11: Target Configuration
Target Configuration Cystic Targets Diameters....................1, 2 and 4 mm Placement.................1, 3.5 and 6 cm deep Pin 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, 22ºC. -
Page 13: Phantom Specifications
Phantom Specifications Physical Specifications Weight..............Approx. 1.75 kg (3 lbs. 13 oz.) Dimensions...............11.4 x 17 x 8.25 cm (4.50 x 6.75 x 3.25 in.) Scanning 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 All acoustic measurements made at 4.5 MHz, 22ºC. -
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 scan- ning surface may flatten out. It is suggested that the phantom be sent in for rejuvenation 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 006225-00-05 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 customer’s 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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