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It can distinguish an intrinsic from an extrinsic neoplasm. Ultrasonic images of malignant tumours include ill-defined margins. [8] Furthermore, high resolution ultrasound can identify the exact tumour location within the parotid gland, its relationship to the retromandibular vein and assist surgical excision. [9]
The Cancer Imaging Archive (TCIA) is an open-access database of medical images for cancer research. The site is funded by the National Cancer Institute's (NCI) Cancer Imaging Program, and the contract is operated by the University of Arkansas for Medical Sciences. Data within the archive is organized into collections which typically share a ...
A 19-year-old male patient known to have multi-nodular goiter and FNA, showing underlying Hashimoto's thyroiditis. a, b Sagittal and transverse greyscale and colour Doppler ultrasound of the neck demonstrate a hypoechoic enlarged right thyroid lobe with small hyperechoic regenerative nodules and marked hypervascularity (white arrows). c, d ...
The result is a series of two-dimensional, cross-sectional images, which can be collected in real time and can show quite high in-plane resolution if detector elements are packed at high density around the image plane. [16] [31] Translating the detector along the third dimension then allows volumetric scanning. [32]
Photoacoustic imaging or optoacoustic imaging is a biomedical imaging modality based on the photoacoustic effect.Non-ionizing laser pulses are delivered into biological tissues and part of the energy will be absorbed and converted into heat, leading to transient thermoelastic expansion and thus wideband (i.e. MHz) ultrasonic emission.
Head and neck cancer is a general term encompassing multiple cancers that can develop in the head and neck region. These include cancers of the mouth, tongue, gums and lips ( oral cancer ), voice box ( laryngeal ), throat ( nasopharyngeal , oropharyngeal , [ 1 ] hypopharyngeal ), salivary glands , nose and sinuses .
In this procedure, a doctor inserts an ultrasound probe into the rectum, enabling them to see the prostate gland. Next, they insert a long, narrow tube called a cystoscope into the bladder.
Medical ultrasound includes diagnostic techniques (mainly imaging techniques) using ultrasound, as well as therapeutic applications of ultrasound. In diagnosis, it is used to create an image of internal body structures such as tendons, muscles, joints, blood vessels, and internal organs, to measure some characteristics (e.g., distances and velocities) or to generate an informative audible sound.