Breast Ultrasound QA Phantom - Kyoto Kagaku
For Monthly Basic Quality Check of Ultrasound Images

• Four kinds of targets, gray scale, cyst targets, dot targets and 45 degrees line target at 2 depth, 10mm and 20mm.
• Back ground of each phantom is of different attenuation rate and speed of sound.
• Detailed spatial resolution as minute as 0.5mm can be assessed.
• Stable and durable nonaqueous phantom materials.
       *Japanese patent No.3650096
• Comes with a thermometer to measure inner temperature of the phantom.

Ultrasound QA phantom for high precision imaging in the high frequency sonography around 10MHz required in breast examination.

For monthly basic quality check of ultrasound images, as well as longer term quality assurance to maintain consistency of the performance of scanners and transducers.

Mass Targets Block (Contrast Resolution) Gray Scale Targets 10 step gray scale targets. Find the optimal gain to visualize all targets clearly and with even change in echogenicities. Then keep the gain for subsequence assessment session. Cyst Targets 4 targets with different diameter from 1mm to 4mm. Visualize the four targets as clear as possible. Then check their roundness and if the 1mm dia. target can be properly recognized.

Dot Targets Block (Spatial Resolution) Dot Targets Dot targets for horizontal and vertical resolution. Spacing from 0.5mm to 3mm. 45 Degrees Line Target Influence on the image quality by the thickness of the ultrasound along the elevation plain of the transducer can be assessed. Consists of two dot target with 2 mm distance with a line target embedded horizontally with 45 degrees from the front wall to the back wall.

Specifications
	Mass Target Block	Dot Targets Block
Speed of Sound (at 25 degrees C)	1437 m/sec	146637 with margin of plus or minus 1.15 m/sec
Attenuation rate	0.57 db/cmMhz (at 25 degrees C)	0.712dB/cmMhz (at 24 degrees C)
Acoustic impedance (at 25 degrees C)	1.38 rayl	1.42 rayl
Embedded targets	Gray scale targets Cyst targets	Dot targets 45 degree line targets
Size	18.2 x 7.7 x 11.2 mm	13.5 x 7.7 x 11.2 mm