BackgroundTo assess the reliability of the measurements obtained with the PalmScan�, when compared with another standardized A-mode ultrasound device, and assess the consistency and correlation between the two methods.MethodsTransversal, descriptive, and comparative study. We recorded the axial length (AL), anterior chamber depth ...
PubMed Central
A captive juvenile gray whale, Eschrichtius robustus, was studied with ultrasound using A-mode technique. Measurements of blubber and fat thickness by means of selected tissue interfaces were made. Suture implantation depths were also measured. Ultrasound...
National Technical Information Service (NTIS)
... Title : ECHO ULTRASOUND EXAMINATION DEVICE WITH MULTI-LAYER ... SIGNAL SUPPLY LAYER OF THE TRANSDUCER, FEEDING BACK A ...
DTIC Science & Technology
Because fat thickness in feedlot cattle can be a predictor of carcass quality and yield grade, estimates of fat thickness during the later stages of the finishing period can be used to make marketing decisions. Ultrasound technology is a nondestructive and humane technique used to estimate fat thick...
Technology Transfer Automated Retrieval System (TEKTRAN)
... Device�3D Imaging Baskerville, Melinda Ultrasound Technician 100% Manning, Edward Ultrasound Technician 100% 8
... an ultrasound device inserted into the vagina (transvaginal ultrasonography) to confirm the diagnosis. Surgery is done immediately ... on symptoms and results of a physical examination. Ultrasonography using an ultrasound device inserted into the vagina ( ...
MedlinePLUS
In this study, we report a new and original device called the "echorheometer," comprising a suction system with an ultrasound scanner (A-mode, TM-mode and B-mode) that enables the simultaneous visualization and measurement of the deformation of skin structures in vivo. With the scanner described here, high resolution is obtained using ...
PubMed
... MEASUREMENT OF ACOUSTIC OUTPUT PARAMETERS FROM MEDICAL ULTRASOUND DEVICES WITH AN RF POWER METER SYSTEM. ...
... THE IMPLICATIONS OF THIS STUDY TO THE DESIGN OF B-MODE ULTRASOUND DEVICES ARE NOTED AND REVIEWED. (AUTHOR). ...
An ultrasound tomography device for scanning an object under examination from a plurality of directions. Coronal slice images of the plane areas near or at the female breast wall are obtained. Ultrasound lobes from ultrasound transducers are electronically directed or mechanically positioned to obliquely strike the ...
Energy Citations Database
A case is presented in which computed tomography demonstrated the extrauterine location of an intrauterine device following an equivocal ultrasound examination.
Description: This task aims to develop non ultrasound based imaging technology for noninvasive imaging of body parts that cannot be conducted with ...
NASA Website
Task, Smart Therapeutic Ultrasound Device for Mission Critical Care .... Task, Intuitive Ultrasound Catalog for Autonomous Medical Care ...
This task aims to develop an open architecture ultrasound device that would provide ultrasound imaging and therapies simultaneously with a single integrated ...
Apr 21, 2011 ... While many ultrasound machines are large, bulky, and difficult to operate by anyone but a trained ultrasonographer, newer portable devices ...
...Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4410 Low energy ultrasound wound cleaner. (a) Identification...
Code of Federal Regulations, 2011
Endovascular stents that are implanted in an artery are often used in the interventional treatment of coronary artery disease. Its widespread applications are, however, limited by the development of subacute thrombosis (clot forming inside of the stent). Ex vivo experiments with pigs have shown that the broadband A-mode ultrasound is quite effective in ...
NASA Astrophysics Data System (ADS)
ultrasound and other thermo- therapy devices. Recently, the method of ultrasound-stimulated acoustic emission- tion system. These beams could be the same therapy beams used in focused ultrasound surgery (FUS generated with an ultrasound therapy system. Ultrasound Med Biol ...
E-print Network
research in ultrasound therapy has shown that ultrasound-mediated drug delivery improves absorption to facilitate drug delivery therapy. Key words: 3D; endoscope; hyperthermia; imaging; ultrasound. I-based therapies. 3 Typical methods of applying HT are through microwave, rf current and ultrasound ...
(ACT) devices are charge transfer devices similar to conventional charge coupled ...... ACT devices, as well as transducers for biomedical ultrasound ...
... device. Examples include diagnostic ultrasound products, x-ray machines and medical lasers. - Spotlight Hearing Aids ... & Resources Device Registration and Listing Medical Device Databases ...
Muscle ultrasound is a useful technique to detect neuromuscular disorders. Quantification of muscle echo intensity (EI) using gray-scale analysis is more reliable and more sensitive compared with visual evaluation of the images. We devised a method to reliably use EI normal values established with one ultrasound device for use with ...
... treated. Options include medication, physical therapy, exercise, heat therapy (including microwave and ultrasound), orthotics and assistive devices, and rest. The standard ...
... approval process. The ultrasound technician was terminated from employment in August 2005 for repeated absenteeism. 14. ...
In the past few years transthoracic ultrasound has been recognized as an important tool for chest physicians. At present, ultrasound devices are practical, portable, easy to use and reliable, which makes them suited for diagnostic investigations as well as for therapeutic procedures guidance. Basic ultrasound ...
A kit for use in ultrasound imaging can include a deployment device configured for partial insertion in vivo, a 3-D imaging catheter, moveably coupled to the deployment device including a 2D ultrasound transducer phased array mounted thereon and configure...
The development of a lightweight, simple-structure and low-power-consumption sonophoresis device for drug delivery is required. For this purpose, a new sonophoresis device with dual flat flextensional ultrasound transducers was fabricated and investigated in this work. When both ultrasound transducers were operated ...
Carotid and vertebral artery spectral Doppler ultrasound waveforms can be affected by many types of local lesions, proximal cardiovascular disease, and devices, as well as distal cerebrovascular disease. Recognizing abnormal spectral Doppler ultrasound waveforms and their significance is important for proper management. Examples of ...
advantage for ultrasound therapy is the ability to treat and image tissue using the same device. Recent intense ultrasound is a therapy with potential utility for treatment of pathological soft tissues [1. Faidi, "Ultrasound therapy system and ablation results utilizing miniature imaging/therapy arrays," 2004
The role of echoencephalography in neurologic diagnosis depends to some extent upon the availability of computerized transmission tomography. Where CTT is available, its superior ability to objectively evaluate the midline and ventricular size has largely eliminated the use of A-mode echoencephalography. CTT is capable of detecting acute subdural hematomas, and the relative absorption ...
The Food and Drug Administration (FDA) is classifying the focused ultrasound stimulator system for aesthetic use into class II (special controls). The special control(s) that will apply to the device is the guidance document entitled "Class II Special Controls Guidance Document: Focused Ultrasound Stimulator System for Aesthetic Use." ...
Total body fat mass was estimated in 25 women and 21 men from densitometry. All subjects were apparently healthy. Subcutaneous fat mass was calculated by measuring subcutaneous fat thickness at 12 sites using A-mode ultrasound. The proportion of fat situated subcutaneously (PFSS) was found to vary considerably between individuals (range 0.50-0.97 in the ...
Ultrasound transducers capable of retaining their piezoelectric properties at high temperatures are used in displacement measuring devices for liquid sodium-cooled reactors. A piezoelectric ultrasound transducer in which monocrystalline piezoelectric pellets are fixed by their active faces to a common support is described. ...
The use of ultrasound is now widespread within the field of Emergency Medicine. The availability of lightweight and relatively cheap ultrasound devices has enabled clinicians to obtain more detailed information about the condition of acutely ill and injured patients than can be done with a clinical exam only. This paper discusses the ...
This book will give vascular surgeons, cardiologists, radiologists, and technologists a complete working knowledge of intravascular ultrasound imaging and the crucial role of this new technology in endovascular diagnosis and therapy. The book reviews the essential principles of vascular pathology and ultrasound imaging and then provides state-of-the-art ...
of PRF thermometry. To date, pre-clinical studies of MRI-guided interstitial ultrasound therapy have been-intensity focused ultrasound therapy. Ultrasound Med Biol 2004;30(9):1239-49. 16. Lafon C, Chapelon JY, Prat F, et ultrasound transducers for conformal interstitial thermal therapy. IEEE Trans Ultrason ...
Cardiovascular changes induced by weightlessness were assessed by ultrasound echography and doppler using the As de coeur device. During the flight the left atrium and ventricle volumes were decreased. Despite the reduction of the stroke volume, the cardi...
Thyroid ultrasound creates pictures by bouncing sound waves off the gland. This technique is painless and quick. But it cannot determine whether a lump is cancerous. The ultrasound device uses sound waves that people cannot hear. A computer uses the echoes to create a picture called a sonogram.
Cancer.gov
An approach aimed at improved ultrasound resolution and signal strength through highly attenuating media is presented. The method delivers a series of multiple-cycle bursts in order to construct a discrete spectral (frequency domain) response in one dimension. Cross-correlation of this ultrasound A-mode response with its transmitted ...
Due to the increased use of high intensity ultrasonic devices, there is now a greater risk of worker exposure to ultrasonic radiation than there was in the past. Exposure to high power ultrasound may produce adverse biological effects. High power ultrasound, characterized by high intensity outputs at frequencies of 20-100 kHz, has a ...
The use of ultrasound imaging technology during techniques of peripheral nerve blockade offers several clinical benefits. Here we report on a new method to educate residents in ultrasound-guided regional anesthesia. The daily challenge for the anesthesiologists is the 3D angle-depending handling of the stimulation needle and the ...
The Food and Drug Administration (FDA) is classifying the low energy ultrasound wound cleaner into class II (special controls). The special control that will apply to the device is the guidance document entitled "Class II Special Controls Guidance Document: Low Energy Ultrasound Wound Cleaner." The agency is taking this action in ...
...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES RADIOLOGY DEVICES...sonometer is a device that transmits ultrasound energy into the human body to measure acoustic properties of bone that...
The generation of ultrasound by a collapsing single cavitation bubble in a strongly absorbing liquid illuminated with a moderate power CW laser is described. The ultrasound shock wave is detected with hydrophone and interferometric device. To obtain a stronger pulse it is necessary to adjust a liquid absorption and a beam diameter. ...
is controlled for both diagnostic and therapy devices. For airborne ultrasound, interim guidelines on limits-medical protection standards for ultrasound and infrasound Francis A. Duck� Royal United Hospital Bath NHS Trust August 2006 Abstract Protection from inappropriate or hazardous exposure to ultrasound is ...
Human platelets were induced by 2.1-megahertz ultrasound to form aggregates around gas-filled pores in membranes immersed in platelet-rich plasma. The spatial peak intensities required were only about 16 to 32 milliwatts per square centimeter. Ultrasound generated by a medical Doppler device, whose intensity exceeded this, induced ...
application of ultrasound-enhanced transdermal drug delivery, a smaller, portable device is necessary. The use to enhance transdermal insulin delivery to significantly reduce a high glucose level in rats in a short design for a portable ultrasound enhanced transdermal drug delivery system," IEEE Trans. Ultrason
4-tube active cannula (AC). Top-Right: Ultrasound Interstitial Thermal Therapy (USITT) flexible Interstitial Thermal Therapy (ACUSITT) Device The USITT interstitial ultrasound applicators utilize arrays of conformal ultrasound ablative therapy with on-line monitoring. ACKNOWLEDGEMENTS The authors would like
A device which is a new stage in the development of medical equipment has been developed. The device works as an ultrasound microscope in vivo and provides 4 up to 32 colored histological image. It gives possibility to estimate tissue acoustic density with the help of 4 up to 32 gradation coloring different tissues and enables tissue ...
Discusses ultrasonography of the fetus including number, location, normal and abnormal growth patterns, and abnormalities of the fetus. The normal uterus and ovary is described and findings related to contraceptive devices are covered. Primary audience: p...
... cryoablation, laser, high intensity focused ultrasound, and ... Also, it was thought that separate trials are ... both the treatment and control groups and compared ...
Center for Biologics Evaluation and Research (CBER)
Mar 2, 2011 ... Remote ultrasound procedures provide for medical diagnoses to areas as far-flung as Mount Everest (above) and the International Space ...
Apr 21, 2011... Q-Stress" echocardiographic ultrasound imaging device. Three electrodes were placed on the subjects' chest and a technician used a probe ...
Task, Integrated Medical Module - Neck Injury ... Data and software module that are used by IMM software .... Task, Open Architecture Ultrasound Device ...
...A phacofragmentation system is an AC-powered device with a fragmenting needle intended for use in cataract surgery to disrupt a cataract with ultrasound and extract the cataract. (b) Classification. Class...
Ultrasound has been in use for the last three decades as amodality for diagnostic imaging in medicine. Recently, there have beennumerous reports on the application of nonthermal ultrasound energyfor targeting or controlling drug release. This new concept oftherapeutic ultrasound combined with drugs has led to much excitementin various ...
Ultrasound imaging has been used for medical purposes for over 50 years and has an excellent safety record. Ultrasonic fetal scanning is generally considered safe and is properly used when medical information on a pregnancy is needed. However, ultrasound energy delivered to the fetus cannot be regarded as completely innocuous. Even though there are no ...
The success of surgical management of lower pole stones is principally dependent on stone fragmentation and residual stone clearance. Choice of surgical method depends on stone size, yet all methods are subject to post-surgical complications resulting from residual stone fragments. Here we present a novel method and device to reposition kidney stones using ...
We present image results obtained using a prototype ultrasound array that demonstrates the fundamental architecture for a large area MEMS based ultrasound device for detection of breast cancer. The prototype array consists of a tiling of capacitive Micromachined Ultrasound Transducers (cMUTs) that have been ...
Since the development of biomedical ultrasound imaging from sonar after WWII, there has been a clear divide between ultrasonic imaging and ultrasound therapy. While imaging techniques are designed to cause as little change as possible in the tissues through which ultrasound propagates, ultrasound therapy typically ...
The EKOS Ultrasound Infusion Systems (EKOS Corporation, Bothell, WA) use high frequency, low intensity ultrasound to accelerate thrombolysis by enhancing clot permeability and lytic drug penetration into thrombus. These systems are designed to provide efficacious catheter-directed treatment for the management of stroke, peripheral arterial occlusion and ...
In the present work the effects of a new low frequency, high intensity ultrasound technology on human adipose tissue ex vivo were studied. In particular, we investigated the effects of both external and surgical ultrasound-irradiation (10 min) by evaluating, other than sample weight loss and fat release, also histological architecture alteration as well ...
: To develop an ultrasound-based source to skin surface distance (SSD) measurement technique and device accelerator (Linac). The ultrasound device provided digital readout with an accuracy of 0.1 mm for a flat owing to the increasing use of ultra-precise inten- sity-modulated radiation therapy, new tools for easy
A miniature piezoelectric receiver coupled to a diode is evaluated as a simple device for wireless transmission of bioelectric events to the body surface. The device converts the energy of a surface-applied ultrasound beam to a high frequency carrier current in solution. Bioelectrical currents near the implant modulate the carrier ...
A retained fractured segment of an intravascular ultrasound catheter in the coronary artery during percutaneous coronary intervention is a rare occurrence. We describe our experience with successful retrieval of a fractured IVUS catheter fragment in a previously stented left anterior descending artery using a distal embolic protection device. PMID:19246852
This paper reports on a new ultrasound device for noninvasive assessment of bone. The device, known as the QRT 2000 -for Quantitative Real-Time-is entirely self-contained, portable, and handheld. The QRT 2000 is powered by 4 "AA" rechargeable batteries and permits near real-time evaluation of a novel set of ...
A new method using ultrasound sensors to detect the diaphragm position of a ventricular assist device (VAD) was proposed. Two small ultrasound sensors of 2.4mm diameter were attached to the outside surface of blood chamber of a pneumatic VAD. The receiving crystal received the ultrasound from the transmitting ...
We have constructed and tested a prototype test bed that allows us to form 3D photoacoustic CT images using near-infrared (NIR) irradiation (700 - 900 nm), 3D thermoacoustic CT images using microwave irradiation (434 MHz), and 3D ultrasound images from a commercial ultrasound scanner. The device utilizes a vertically oriented, curved ...
At Saint Louis University Health Sciences Center, bi-ventricular assist devices were placed in a patient after failure to wean from bypass. These acrylic devices are known to be used for post cardiotomy failure. Acrylics and other plastics are used in extracorporeal circuitry. Plastics have been known to crack when exposed to certain chemicals and ...
Real-time ultrasonography was used for the aspiration of intracerebral hematoma in the basal ganglia in 7 patients without signs of impending herniation. The ultrasound device was used to select the trajectory and target point for hematoma drainage. Ultrasound-guided aspiration was performed via a burr hole under local anesthesia. We ...
Abstract�Polymer microring resonators are demonstrated as high-frequency, ultrasound detectors. An optical microring resonator consists of a ring waveguide closely coupled to a straight bus waveguide, serving as light input and output. Acoustic waves irradiating the ring induce strain, deforming the waveguide dimensions and changing the refractive index of the waveguide via ...
