Unit 1 Flashcards
Ultrasound is greater than _______ Hz
20,000
Ultrasound waves are pulsed into the body by a ______ with the help of a ________
transducer / coupling gel
Describe the Pulse-echo technique, what does it produce?
When the pulse strikes an object within the body and returns to the transducer. Produces a sonographic image
Diagnostic ultrasound range is usually between ___ and ____ MHz or higher
2 and 15 MHz
A sonographer should have the ability to locate, measure and sonographically describe ___ within the body
pathology
What is completed exactly after a sonography examination?
The sonographer report
Define diagnostician
someone who produces a diagnosis from images and shares the diagnosis with the patient
(T or F) Sonographers can provide diagnostic information to patients
FALSE. Sonographers who provide diagnostic information can be held legally liable
The act of performing the sonographic examination may be referred to as _______
scanning
General imaging is usually interpreted by a ______
Radiologist
Echocardiograms are usually interpreted by a ______
Cardiologist
_____ is the oldest of the diagnostic modalities within the imaging department
Radiography (x-rays)
______ utilizes radioactive material for the diagnosis and treatment of various diseases
Nuclear medicine
What is the gold standard in breast imaging?
Mammography
MRI stands for…..
magnetic resonance imaging
_______ uses a powerful magnetic field, radio waves and a devoted computer system to create sectional images of the human body
MRI’s
Describe pulse-echo technique
The ultrasound transducer sends an ultrasound wave into the body and then listens for the returning echo
What imaging technique does not require ionizing radiation to acquire images?
MRI’s
Anechoic means…
Without echoes
Hypoechoic means….
having few echoes
Isoechoic means….
having the same echogenicity
Define echogenicity
the number of echoes within a structure
Define anechoic
Without echoes
Another word for anterior is _____. They both mean…
Ventral; Towards the front of the body
Contralateral means…
On the opposite side of the body
Deep means…
Away from the surface of the body or structure
Distal means…
Farther from the attachment point or origin of an extremity to the trunk of the body
Another word for inferior is____. They both mean…
Caudal; Towards the feet or away from the head; a structure lower than another part of the body; the lower part of an organ or structure
Ipsilateral means…
On the same side of the body
i.e the right arm and right leg are ipsilateral
Lateral means
Away from the midline of the body or pertaining to the side; situated at or on the side
Medial means…
Toward the middle of the body or an organ
Another word for dorsal is ______. They both mean…
Posterior; Toward the back or behind another structure
Proximal means…
Toward the origin or attachment of a structure to the trunk
Superficial means…
Closer to the surface of the body or structure
Another word for superior is ______ or ______, they all mean…..
Cranial; Cephalic; toward the head or higher in the body
