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Ultrasound Terms Flashcards

General terms used for ultrasound images

Terms : Hide Images
444109826Acoustic Enhancement"Increased echo amplitude" or "posterior through transmission" visualized posterior to a structure that does not attenuate (decreased, stop, impede, or absorb) the sound beam. Considered a type of sonographic artifact. -- Bright posterior through transmission
444109827ALARA [low as reasonably achievable]Prudent use of diagnostic sonogrpahy; dictates that the output level and exposure time to ultrasound is minimized while obtaining diagnostic data.
444109828Anterior [Ventral]Situated at or directed toward the front. A structure in front of another structure.
444109829Acoustic ImpedanceResistance a material provides to the passage of a sound wave. "Bone portrays more _______ _______ than tissue."
444109830Acoustic Shadows"Reduced echo amplitude" or echo "drop off" posterior to a structure that attenuates [decreases, stops, impedes or absorbs] the cound beam. Margins of the shadow are generally sharp and well defined. Considered a type of sonographic artifact.
444109831AnechoicAppearance: - Echo-Free on an image - 0 echoes, Black
444109832ArtifactAre echo features or structures observed on images that are unassociated with the structure imaged
444109833AscitesAccumulation of serous fluids anywhere in the abdominopelvic cavity.
444109834AttenuationDecreased in the intensity of the sound beam as it passes through a structure, caused by absorption, scatter or beam divergence.
444109835Axial [short axis] [view or section]At right angles to longitudinal sections
444109836Beam DivergenceWidening of the sound beam as it travels
444109837Calipers [electronic]2 or more measurement cursors that can be manipulated to calibrate the distance BTN echoes of interest on the screen.
444109838Color Flow DopplerDoppler shift information in a two-dimensional presentation superimposed on a real-time gray scale anatomic cross-sectional image.
444109839Complex MassAbnormal mass w/in the body composed of both tissue and fluid.
444109840ContralateralSituated on or affecting the opposite side.
444109841ContrastA comparison to show differences.
444109842Coronal Scanning PlanesAny plane parallel to the long axis of the body and perpendicular to sagittal scanning planes.
444109843Coupling AgentSubstance used to reduce air BTN the transducer and surface of the skin.
444109844Crura of diaphragmRight & Left crus or fibromuscular bands arising from the lumbar vertebrae that insert into the central tendon of the diaphragm.
444109845CysticDescribes the sonographic appearance of the a fluid collection with in the body and does not meet the criteria to be considered a true cyst.
444109846DeepInternal. Situated away from the surface.
444109847Depth of penetrationMaximum distance the sound beam travels from the transducer through a medium.
444109848Diffuse diseaseInfiltrative disease throughout an organ that disrupts the otherwise normal sonographic appearance of the organ parenchyma.
444109849DistalSituated farthest from the point of origin.
444109850Doppler (effect)Change in observed sound frequency caused by relative motion between the source of the sound or reflector and the observer.
444109851EchogenicDescribes a structures that is able to produce echoes or echo pattern. Hyperechoic, hypoechoic, and anechoic are the terms used to qualify either an abundance or absence of echoes displayed by a structure in a sonographic image.
444109852EchopenicFew echos. ex. Bile-filled gallbladder may appear _________.
444109853Echo TextureDescribes the sonographic appearance of soft tissue structures within the body.
444109854Extraorgan PathologyAbnormal disease process that originates out side of an organ.
444109855Focal/ Multifocal ChangeDisease process confined to isolated areas of an organ.
444109856Focal ZonePoint at which the sound beam is the narrowest and the resolution is the best.
444109857Gray ScaleScale of achromatic colors having multiple gradations from white to black.
444109858HeterogeneousDescribes an irregular or mixed echo patterns of organ parenchyma on a sonogrpahic image.
444109859HomogeneousDescribes uniform or similar echo patterns of organ parenchyma on a sonogrpahic image.
444109860HyperechoicComparative term used to describe an area in a sonographic image where the echoes are brighter relative to surrounding structure. --Lots of echoes BRIGHT WHITE
444109861HypoechoicComparative term used to describe an area in a sonographic image where the echoes are not as bright relative to surrounding structures. --Not so many echoes GRAY - DARK
444109862Inferior (caudal)Toward the feet. Situated below or directed downward. A structure lower than another structure.
444109863Infiltrative DiseaseDiffuse disease process that spreads throughout an entire organ.
444109864InterfaceBoundary between two materials or structures. -- bright sonographic appearance of fat.
444109865Intraorgan PathologyAbnormal disease process that originates within an organ.
444109866IntraperitionealAbdominopelvic structures enclosed in the sac formed by the parietal peritoneum.
444109867IpsilateralSituated on or affecting the same side. --Spleen and left kidney are ___________.
444109868Isogenic / IsosonicComparative term used to describe an area in a sonographic image where the echo patterns are equal in echogenicity.
444109869LateralPertaining to the right or left of the middle or midline of the body. Describes a structure situated at, on or toward the side.
444109870Localized DiseaseRepresents a circumscribed mass or multiple masses.
444109871Long axis (view or section)Represents the longest length of a structure.
444109872LongitudinalPertains to length; running lengthwise.
444109873MassCircumscribed disease process. -- A cyst is a ______.
444109874MedialSituated at, on or toward the middle or midline of the body.
444109875MediumAny material through which sound waves travel.
444109876MesentaryA double fold of peritoneum that connects intraperitoneal organs to the abdominal cavity wall.
444109877Mirror Image Artifact (non-doppler)Sonographic image of the structure is duplicated in an atypical position and appears as a mirror image of the original.
444109878NecroticDegeneration or "death" of tissue. -- Many complex masses are __________.
444109879NeoplasmNew, abnormal growth of existing tissues; either benign or malignant.
444109880OrthogonalRight angles; perpendicular.
444109881ParanchymaTissue composing an organ.
444109882PeritoneumThin sheet of tissue that lines the peritoneal cavity and secretes serous fluid.
444109883Pleural EffusionA collection of fluid inside the lungs.
444109884Posterior (dorsal)Situated at or directed toward the back. A structure behind another structure.
444109885ProximalSituated closest to the point of origin or attachment.
444109886RetroperitoneumArea of the abdominopelvic cavity located behind or posterior to the peritoneum.
444109887ReverberationImage artifact cause when sound waves pass through and beyond a structure whose acoustic impedance is noticeably different than an adjacent structure, causing a huge amount of reflection back to the transducer.
444109888Reverberation____________ is a common artifact seen on images when scanning intercostally. Generally, an image of a structure (in this case a rib) is repeated, with the repeated image taken at an equal distance from the other.
444109889Midsagittal and Parasagittal scanning planesAny plane parallel to the long axis of the body and perpendicular to coronal scanning planes.
444109890SeptationsThin, membranous includsion with in a mass.
444109891Solid MassAbnormal mass within the body composed of one thing, tissue.
444109892SonogramPictorial record with ultrasound
444109893SonologistPhysician who interprets a sonogram.
444109894SuperficialExternal. Situated toward the surface
444109895Superior (cranial)Toward the head.
444109896SystemicPertains to the body as a whole
444109897TGC (time-gain compensation)Increase in receiver gain with time to compensate for loss in echo amplitude, usually due to attenuation, with depth.
444109898Through Transmission"Increased echo amplitude" or "acoustic enhancement" visualized posterior to a structure that does not attenuate (decrease, stop, impede or absorb) the sound beam. Considered a type of sonographic artifact.
444109899TransmissionTerm implying passage of energy through a material.
444109900Transverse scanning plansAny plane perpendicular to the long axis of the body.
444109901True Cyst (simple cyst)Abnormal mass within the body composed of fluid.
444109902UltrasoundSound at frequencies above 20 kilohertz or above the range of human hearing.

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