Exam (elaborations)
INTRO TO SONOGRAPHY QUESTIONS AND ANSWERS
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INTRO TO SONOGRAPHY QUESTIONS AND ANSWERS
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INTRO TO SONOGRAPHY QUESTIONS ANDANSWERS
diagnostic medical sonography, ultrasound, echosonography, and ultrasonography -
Answers -what are four terms used to describe the use of high-frequency sounds waves
in medical imaging?
ultrasound - Answers -_______: refers to sound that is well above the human range of
hearing that is used in medicine to diagnose and assess healthy and abnormal
structures, vessels, or organs inside the body.
sonography - Answers -in diagnostic imaging, _______ is the preferred term to describe
the use of sound in the range of 1 to 20 MHz or greater for patient imaging.
transducer - Answers -sonography equipment creates waves of energy when an
electrical voltage is applied to the ceramic element housed inside the _______
receiver - Answers -the transducer acts as a _______ that processes the echoes
returning from inside the body.
composite - Answers -the received echoes within the body create a ______ image that
is displayed in real time on a monitor to be viewed, saved, and stored.
greater - Answers -lower frequency transducers permit ______ penetration for imaging
organs such as the liver.
sharper - Answers -higher frequency transducers allow a ______ image for superficial
structures such as breast tissue.
general, echocardiography, and vascular - Answers -diagnostic sonography has what
three major imaging specialty areas?
obstetrics and pediatrics - Answers -sonography is a preferred modality for imaging in
_______ and ________ b/c it can be performed quickly and effectively to obtain a
diagnosis and does not use ionizing radiation.
military - Answers -medical applications for imaging emerged from the _______
3D and 4D - Answers -newer sonography application include ____ and ____ imaging to
allow the display of an object in three dimensions and fusion of ultra sound images with
other modalities such as MRI or elastography for detection of normal and abnormal
tissues such as the breast.
musculoskeletal - Answers -a negative outcome to digital imaging has been high
percentages of job-related ______ injury for sonographers.
, thermal or nonthermal - Answers -sound wave energy at ultrasound frequencies has
been proven in epidemiology studies to create changes in tissue known as _____ or
_______.
thermal (TI), mechanical (MI) - Answers -thermal changes are represented by the _____
index and are related to heating. nonthermal effects are prepresented by the ______
index and are related to changes in cell structure.
energy - Answers -MI and TI values measure the amount of sound ______ that is being
delivered to the patient and are displayed during the scan.
ALARA - Answers -the sonographer must keep the principle of the ______ concept in
mind to ensure a diagnostic scan is performed in the least amount of time with the
lowest MI and TI settings.
false - Answers -true or false. to date, studies have shown that diagnostic ultrasound
can still be harmful to humans even when scans are performed with patient safety in
mind
air - Answers -_____ prevents sounds waves from obtained reliable information and a
coupling medium or gel needs to be generously applied between the patient and the
transducer to perform any imaging study.
tissue - Answers -sonography is best suited for imaging and is considered the gold
standard for _____ assessment such as liver, kidneys, gallbladder, uterus, and blood
vessels b/c there is little interference from bone or air.
gastrointestinal tract - Answers -due to air within this cavity, the _______ _______ is nor
routinely imaged within the abdominopelvic cavity.
bone - Answers -because of its density, ______ also is not a ready medium for
diagnostic ultrasound. however, this structure can easily be seen when imaging a fetus
b/c they are not as well developed as they are as in an adult.
FAST (focused assessment with sonography for trauma) - Answers -the advent of the
______ scan in emergency medicine has created an explosive demand for sonography
in trauma settings where a quick assessment of the patient may mean the difference
between life and death.
- Answers -the US is still waiting for final approval from the FDA for most sonographic
applications using contrast agents.
abdomen, obstetrics and gynecology, cardiac, small parts, valcular, and musculoskeltal
imaging - Answers -what are the six clinical applications where sonographic imaging
can be used?
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