Medical Ultrasound Imaging
Tuesday, 7 May 2024
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Harmonic imaging relies on detection of harmonics of the transmitted
frequency produced by bubble oscillation. This method is widely available on ultrasound scanners and uses the same array transducers as conventional imaging. A major limitation of the use of ultrasound contrast agents is the problem that signals from the microbubbles are mixed with those from tissue. Echoes from solid tissue and red blood cells are suppressed by harmonic imaging. In harmonic mode, the system transmits at one frequency, but is tuned to receive echoes preferentially at double that frequency, and the second harmonic echoes from the place of the bubble. Typically, the transmit frequency lies between 1.5 and 3 MHz and the receive frequency is selected by means of a bandpass filter whose center frequency lies between 3 and 6 MHz. Color Doppler and real-time harmonic spectral Doppler modes have also been implemented and show a level of tissue motion suppression not available in conventional modes. See also Harmonic B-Mode Imaging, and Harmonic Power Doppler.  Further Reading: Basics:
News & More:
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From Hitachi Medical Corporation (HMC), sales, marketing and service in the US by Hitachi Medical Systems America Inc.The HI VISION™ 5500 - EUB-5500 fully digital ultrasound system delivers the latest generation of signal processing technology, sophisticated transducer design, and a host of features and options for advanced imaging capabilities across a wide range of clinical situations. This system is compatible with all Pentax ultrasound endoscopes.
Device Information and Specification
APPLICATIONS
Abdominal, brachytherapy/cryotherapy, breast, cardiac, dedicated biopsy, endoscopic, intraoperative, laparoscopic, musculoskeletal, OB/GYN, pediatric, small parts, urologic, vascular
CONFIGURATION
Compact system
Five frequency (except mini-probes)
Linear, convex, radial, miniradial/miniprobe, biplane, phased array, echoendoscope longitudinal, echoendoscope radial
3 modes of dynamic tissue harmonic imaging (dTHI), pulsed wave Doppler, continuous wave Doppler, color flow imaging, power Doppler, directional power Doppler, color flow angiography, real-time Doppler measurements
IMAGING OPTIONS
3RD generation color artifact suppression
OPTIONAL PACKAGE
STORAGE, CONNECTIVITY, OS
Patient and image database management system, HDD, FDD, MOD, CD-ROM, Network, DICOM 3.0, Windows XP
DATA PROCESSING
H*W*D m (inch.)
1.40 x 0.51 x 0.79 (55 x 20 x 31)
WEIGHT
130 kg (286 lbs.)
POWER CONSUMPTION
1.2kVA
ENVIRONMENTAL IMPACT
4096 btu/hr heat output
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From Hitachi Medical Corporation (HMC), sales, marketing and service in the US by Hitachi Medical Systems America Inc.;Powerful, flexible, and fast, the HI VISION™ 8500 - EUB-8500 diagnostic ultrasound scanner combines leading edge technologies with user-oriented operation for exceptional imaging and functionality. Available exclusively on the 8500, SonoElastography provides a new perspective on the physical properties of tumors and masses by determining and displaying the relative stiffness of tissue. Device Information and Specification
APPLICATIONS
Abdominal, brachytherapy/cryotherapy, breast, cardiac, dedicated biopsy, endoscopic, intraoperative, laparoscopic, musculoskeletal, OB/GYN, pediatric, small parts, urologic, vascular
CONFIGURATION
Compact system
RANGE OF PROBE TYPE
Linear, convex, radial, biplane, phased array, echoendoscope longitudinal, echoendoscope radial
PROBE FREQUENCIES
Linear: 5.0-13 MHz, convex: 2.5-7.5 MHz, phased:
2.0-7.5 MHz, sector: 2.0-7.5 MHz
4 Modes of dynamic tissue harmonic imaging (dTHI), pulsed wave Doppler, continuous wave Doppler, color flow imaging, power Doppler, directional power Doppler, color flow angiography, real-time Doppler measurements, quantitative tissue Doppler
IMAGING OPTIONS
HI COMPOUND imaging,
HI RES adaptive imaging, wideband pulse inversion imaging (WPI), Raw Data Freeze
OPTIONAL PACKAGE
IMAGING ENHANCEMENTS
3RD generation color artifact suppression
STORAGE, CONNECTIVITY, OS
Patient and image database management system, HDD, FDD, MOD, CD-ROM, Network, DICOM 3.0, Windows XP
DATA PROCESSING
Octal beam processing, 12 bit Gigasampling A/D for precise signal reproduction
H*W*D m (inch.)
1.50 * 0.56 * 1.02 (59 x 22 x 40)
WEIGHT
159 kg (351 lbs.)
POWER CONSUMPTION
1.5kVA
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From Hitachi Medical Corporation (HMC);The HI VISION™ 6500 - EUB-6500 high resolution digital ultrasound system offers advanced clinical imaging, enhanced operating efficiency, and remarkable clinical flexibility, all in robust and versatile configuration that simply represents a better clinical solution in a variety of real-world, real-work arenas.
Device Information and Specification
APPLICATIONS
Abdominal, brachytherapy/cryotherapy, breast, cardiac, dedicated biopsy, endoscopic, intraoperative, laparoscopic, musculoskeletal, OB/GYN, pediatric, small parts, urologic, vascular
CONFIGURATION
Compact system
Linear, convex, radial, miniradial/miniprobe, biplane, phased array, echoendoscope longitudinal, echoendoscope radial
Tissue Doppler imaging (TDI), pulsed wave Doppler, continuous wave Doppler, color flow imaging, power Doppler, directional power Doppler, color flow angiography, real-time Doppler measurements, 4 modes of dynamic tissue harmonic imaging (dTHI), wideband pulse inversion imaging (WPI)
IMAGING OPTIONS
3RD generation color artifact suppression
OPTIONAL PACKAGE
3D ultrasound, dual omni-directional M-mode display, steerable CW Doppler, dynamic contrast harmonics imaging, stress echo, Pentax EUS and Fujinon Mini-probe
STORAGE, CONNECTIVITY, OS
Patient and image database management system, HDD, FDD, MOD, CD-ROM, Network, DICOM 3.0, Windows XP
DATA PROCESSING
H*W*D m (inch.)
1.40 x 0.51 x 0.79 (55 x 20 x 31)
WEIGHT
130 kg (286 lbs.)
POWER CONSUMPTION
1.2kVA
ENVIRONMENTAL POLLUTION
4096 btu/hr heat output
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[last update: 2023-11-06 01:42:00]