HIFU


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HIFU

High-intensity focused ultrasound Surgery A method that focuses ultrasound to heat/ablate target tissue without injuring surrounding structures. See Sonablate 200.

ultrasound

(ul'tra-sownd?) [ ultra- + sound]
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FETAL ULTRASOUND IMAGE
Inaudible sound in the frequency range of approx. 20,000 to 10 billion (109) cycles/sec. Ultrasound has different velocities that differ in density and elasticity from one kind of tissue to the next. This property permits the use of ultrasound in outlining the shape of various tissues and organs in the body. In obstetrics, for example, identifying the size and position of the fetus, placenta, and umbilical cord enables estimation of gestational age, detects some fetal anomalies and fetal death, and facilitates other diagnostic procedures, e.g., amniocentesis. In physical therapy, the thermal effects of ultrasound are used to treat musculoskeletal injuries by warming tissue, increasing tissue extensibility, and improving local blood flow. Ultrasound is used to facilitate movement of certain medications, e.g., pain relievers, into tissue (phonophoresis). Ultrasound is also used with electric current for muscular stimulation. The diagnostic and therapeutic uses of ultrasound require special equipment. See: illustration; phonophoresis; sonographer; ultrasonography

A-mode ultrasound

In ultrasonography a display in which imaging data are represented as echo amplitudes (on the y-axis) and time (on the x-axis), similar to the way electromagnetic waves are represented on an oscilloscope.
Synonym: A-mode; A-mode (amplitude modulation) display

B-mode ultrasound

In ultrasonography, a display that uses dots of differing intensities to represent echoes received from tissues that more strongly or weakly reflect sound waves.
Synonym: ; B-scan

continuous wave ultrasound

A form of ultrasound used in echocardiography in which a dual crystal transducer continuously generates and receives an ultrasound signal. It is used to measure blood velocities, e.g., across heart valves. A serious shortcoming of continuous wave ultrasound is its inability to identify depth accurately.

continuous wave Doppler ultrasound

Doppler ultrasonography that uses spectral Doppler in a constant series of echoes both originating and being received by the same transducer. It is used to study obstruction to blood flow through vessels.

duplex Doppler ultrasound

Doppler ultrasonography that uses a transducer with two functions: pulsed-wave Doppler and B-mode imaging.

endobronchial ultrasound

Abbreviation: EBUS
The use of ultrasonic transducers carried within a bronchoscope to evaluate tissues in or adjacent to the trachea and bronchi. EBUS can be used to identify solid masses to be biopsied. It helps distinguish solid masses, which may be malignant, from blood vessels such as the aorta or pulmonary arteries, which should not be penetrated with a biopsy needle.

endorectal ultrasound

Abbreviation: ERUS
1. An imaging technique in which an ultrasound transducer is placed inside the rectum and used to evaluate the depth of colon and prostate cancers and the extent to which they have spread to neighboring lymph nodes.
2. Transrectal ultrasound.

endovaginal ultrasound

Transvaginal ultrasonography.

high-intensity focused ultrasound

Abbreviation: HIFU
A noninvasive form of thermotherapy in which ultrasonic energy is used to generate heat for therapeutic purposes within the body. HIFU has been used to cauterize internal blood vessels that are bleeding, to cavitate or coagulate growths or solid malignancies, e.g., breast, liver, pancreatic, or prostate cancers. The ultrasound transducer is placed on the skin and the energy from the transducer is directed at radiographically localized tissue depths and volumes.

interventional ultrasound

The use of ultrasonography as a guide for local injections or for the placement of catheters, needles, or probes into body cavities or tumors. Interventional ultrasound is used to treat hepatocellular carcinoma, prostate cancer, and other solid tumors.

intravascular ultrasound

Abbreviation: IVUS
In ultrasonography, a technique for imaging intimal tissue proliferation and blood vessel blockages.

keepsake fetal ultrasound

A colloquialism for a three-dimensional image of an unborn child visualized in the womb with ultrasonography treated as a memento. The image is kept by expectant parents as part of a scrapbook of pregnancy and anticipated childbirth.

M-mode ultrasound

An ultrasonic display mode in which the motion of structures is seen on the vertical axis of the display, used, e.g., to show the movement of the heart's valves and walls during diastole and systole.
Synonym: motion-mode display; time-motion mode ultrasound

pelvic ultrasound

Examination of the pelvis with an ultrasonic transducer placed inside the vagina. It is used in assessment of diseases or conditions affecting the cervix, uterus, fallopian tubes, or ovaries.
Synonym: endovaginal ultrasound.

pulsed-wave Doppler ultrasound, pulsed Doppler ultrasound

quantitative ultrasound

Abbreviation: QUS
Measurement of the density of a body tissue, e.g., bone, by determining how rapidly sound travels through the tissue and how different sonic wavelengths are absorbed. QUS is used to diagnose osteopenia and osteoporosis.

real-time ultrasound

A sonographic procedure that provides rapid, multiple images of an anatomical structure in the form of motion.

time-motion mode ultrasound

M-mode ultrasound.

transrectal ultrasound

Abbreviation: TRUS
Imaging of the prostate gland and periprostatic tissues with an ultrasound transducer inserted into the anus and directed toward the anterior rectum. It is used to identify malignant tumors, guide biopsies, and provide assessments of tumor staging.
Synonym: endorectal ultrasound (2)

high-intensity focused ultrasound

Abbreviation: HIFU
A noninvasive form of thermotherapy in which ultrasonic energy is used to generate heat for therapeutic purposes within the body. HIFU has been used to cauterize internal blood vessels that are bleeding, to cavitate or coagulate growths or solid malignancies, e.g., breast, liver, pancreatic, or prostate cancers. The ultrasound transducer is placed on the skin and the energy from the transducer is directed at radiographically localized tissue depths and volumes.
See also: ultrasound
References in periodicals archive ?
More than 50,000 men have been treated for prostate cancer using HIFU technology for men who are seeking definitive treatment of their prostate cancer with minimal possible morbidities.
High Intensity Focused Ultrasound(HIFU) - 10 Companies covered
In all cases, non-tumoural glands had variable degrees of reactive atypia (n=11), atrophy (n=11), and cytoplasmic eosinophilia (n=11) following salvage HIFU therapy.
HIFU plus 3-dimensional conformal radiotherapy (3DCRT) was compared with the radical surgery in resectable liver cancer.
HIFU ablation for patients with early stage cancer is curative, and a normal tissue margin is set to be about 1.5 to 2.0 cm.
In spite of a good initial response to HIFU and a PSA nadir observation, two patients followed at distant centres were lost for evaluation and long term cancer control data were available for 108 patients (98.2%).
HIFU has been used to treat prostate cancer for years in Canada and Europe, and is used to treat uterine fibroids in the United States.
HIFU enabled to avoid early postoperative complications and long-term recurrences.
As a revolutionary breakthrough in medical technology, HIFU is developed by Chongqing Haifu.
In the last decade, patient demands have spurred the development of a non-invasive therapeutic modality for symptomatic uterine fibroids called magnetic resonance imaging-guided high-intensity focused ultrasound (MRI-guided HIFU) (3-11).
- Charlotte, North Carolina-based high intensity focused ultrasound (HIFU) technologies specialist SonaCare Medical has reported 5-year outcomes from a multicenter study following focal therapy treatment with its Sonablate technology of 625 medium to high-risk clinically significant nonmetastatic prostate cancer patients, the company said.
Washington, DC, July 09, 2018 --(PR.com)-- The Medical Imaging & Technology Alliance (MITA) - the leading organization and collective voice of medical imaging equipment, radiopharmaceutical manufacturers, innovators, and product developers - today applauded the release of new research showing the effectiveness of high intensity focused ultrasound (HIFU) in treating patients with prostate cancer.