Ultrasound Study guides, Class notes & Summaries

Test Bank Textbook of Diagnostic Sonography, 9th Edition by Sandra Hagen-Ansert. ISBN: 9780323826464. Textbook of Diagnostic Sonography 9e test bank.

Horizontal Linearity - ️️A measure of the proportionality between the positions of the indications appearing on the baseline and the positions of their sources Strength - ️️Ability of a material to resist failure under some load applied Ductility - ️️Ability of a material to deform and stretch without failing Hardness - ️️Ability of a material to resist indentation Toughness - ️️Ability of a material to absorb energy Tensile Strength - ️️Ability to resist f...

Diagnostic Ultrasound Questions and Answers 2023 acoustic impedance resistance of sound as it propogates through a medium acoustic window ability of sonography to visualize a particular area. (i.e. the full urinary bladder is a good acoustic window to image the uterus and ovaries in a transabdonimal sonogram) anechoic property of being free of echoes or without echoes angle of incidence angle at which the ultrasound beam strikes an interface with respect to normal (perp...

Physics: Equipment: Ultrasound Questions and Answers 2023 What is ultrasound? Ultrasound describes sound waves oscillating at a frequency greater than 20 kHz (20,000Hz). Well beyond the range of human hearing. What frequency range is used in clinical ultrasound? Between 1-20 MHz (1 MHz = 1 million Hz) How are sound waves propagated? Sound waves are propagated through a medium by the vibration of molecules. They cause regular pressure variations with alternating...

Ultrasound Terminology Questions and Answers 2023 B Mode Brightness mode; ultrasound image is displayed in gray scale. Gray Scale* B Mode Transducer Ultrasound Probe; Converts one form of energy into another Piezoelectric Crystals Crystals which produce an electric charge when compressed; as well as expand or contract when an electrical charge is applied. Attenuation Loss of energy as a sound pulse travels through a medium. Frequency Energy at which the ...

Basecamp: Ultrasound Questions and Answers 2023 Match the word with the appropriate unit of measure: intensity W/cm2 Match the word with the appropriate unit of measure: Frequency MHz Match the word with the appropriate unit of measure: Duty Cycle % (T/F) It is safe to use ultrasound over epiphyseal areas in young children False - unsafe (T/F) Common examples of modalities used for deep thermotherapy include soft tissue massage and vapocoolant sprays F...

Ultrasound Modes Questions and Answers 2023 B-mode (Brightness mode) 1. Information displayed as a 2-dimensional map 2. Grey-scale used to show corresponding echo amplitude 3. Ultrasound beam is steered through the patient and data is collected along each line of sight using the pulse-echo principle 4. Allows rapid data acquisition providing real-time images of moving structures Motion Mode 1. Primarily used for cardiac imaging 2. Represents depth (time delay) vs time 3. Differ...

Ultrasound Physics Questions and Answers 2023 gain - "amplification" - ratio of output/input - increases or decreases the echodensity or "brightness" equally throughout the image focal zone area in which the image detail is the best output power - electrical power to the transducer - has the same "apparent" effect on the image as increasing the overall gain - exposes patient to higher level of ultrasound energy golden rule of output power - when an INCREASE in...

Ultrasound in pregnancy Questions and Answers 2023 What are some uses of ultrasound in pregnancy? fetal viability dating or determining gestational age evaluation of fetal growth placental localization fetal anatomy and diagnosis of anomalies assessment of fetal well-being maternal pelvic organs When can the gestational sac be seen? 6 weeks When can FHT be identified with ultrasound? 7 weeks What is the goal of a viability scan? confirm location of pregnancy, docu...

Ultrasound Terms Questions and Answers 2023 Acoustic 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 ALARA [low as reasonably achievable] Prudent use of diagnostic sonogrpahy; dictates that the output level and exposure time to ultrasound is minimized while obt...