Quiz 2 Flashcards
Adnexa
bilateral regions within the female pelvis adjacent to the uterus that contain the ovaries, fallopian tubes, and other structures
Congenital Anomalies
an anomaly (defect) with which someone is born
Contralateral
The opposite side of the body.
Cyanosis
The bluish discoloration of the skin because of decreased oxygen
Echocardiographer
one who uses ultrasound to create images of the heart and surrounding
structures; also referred to as a cardiac sonographer
Ergonomics
the scientific study of creating tools and equipment that help the human adapt to the work environment
Intercostal
between the ribs
Real-Time Imaging
live images of the body’s internal organs and tissues
Ipsilateral
the same side of the body
Left lateral decubitus
A patient positioning technique used in ultrasound. Patient lies on their left side.
Lazzaro Spallanzani (1793
Discovered that bats could function when blinded but not when deafened.
Curie Brothers (1880):
Discovered the Piezoelectric Effect
Christian Doppler (1842)
Discovered the Doppler Effect
When the source of a sound wave moves, the frequency changes
1st use of Ultrasound
to search for submarines.
High-energy, focused Ultrasound waves
used for therapeutic ultrasound to remove unwanted tissue, or to provide heat to ease pain.
Problems with early under water Ultrasound:
High frequencies used to detect submarines also destroyed marine life. Too much heat
Low-intensity ultrasound waves
be used to see inside the body in a noninvasive and painless way
First scanners used
A-mode, Series of connected dots
B Mode
Replaced A mode
AKA: Brightness mode
1970’s
Gray scale B mode imaging replaces A mode
First real-time scanners are created
1980’s
ALL scanners are now real-time
Transducers now can be linear, or curvi-linear
OB Ultrasounds become commonly used to check for fetal well-being
also in the 1980’s
Doppler is used to detect fetal heart defects
1990’s
Most Ultrasound machines have Doppler instrumentation
Vascular Ultrasound becomes more prevalent
21st Century
Development of Tissue Harmonic Imaging
Resolution greatly improved
Deeper structures able to be seen at higher frequencies