Ch. 1 History of DMS and Sonographers

Question 1

What is ultrasound?

Answer 1

Describes sound frequencies beyond the range of normal human hearing. Greater than 20kHtz

Question 2

<20Hz

Answer 2

Infrasound. Low frequency

Question 3

20Hz-20kHz

Answer 3

Audible. What we hear.

Question 4

> 20kHz

Answer 4

Ultrasound. Higher frequency

Question 5

What is a common use of ultrasound?

Answer 5

Sonar. Can locate objects under water and determine distance.

Question 6

What kind of thereapy is sonography used in?

Answer 6

Physical and occupational therapy to increase blood flow to help speed up the healing process.

Question 7

What is it when ultrasound is used at high power levels to break up gallstones, kidney stones, and even heel spurs?

Answer 7

Lithotripsy

Question 8

What is the most common use of ultrasound in medicine?

Answer 8

Diagnostic ultrasound.

Question 9

Define sonography.

Answer 9

To specify the diagnostic imaging application of ultrasound.

Question 10

What is the 3rd oldest imaging modality?

Answer 10

Sonography.

Question 11

Who created the Piezoelectric effect?

Answer 11

Jacque and Pierre Curie 1880.

Question 12

What allowed the construction of transducers to generate and receive sound waves in water?

Answer 12

Piezoelectric effect.

Question 13

Who invented a sonar type device that used echolocation to detect submarines?

Answer 13

Paul Langevin 1915.

Question 14

Who was the first to detect Gallstones?

Answer 14

Ludwig 1940s.

Question 15

What did Wild do?

Answer 15

First to use ultrasound to detect tissue thickness.
Pioneer in development of early internal scanners.
Constructed an early prototype breast scanner with engineer John Reid.
B-Mode techniques used 2D presentations of echo-producing interfaces.

Question 16

B-Mode

Answer 16

Brightness Modulation

Question 17

What did Elder and Hertz do?

Answer 17

Explored the use of ultrasound in the heart using M-mode.

Question 18

M-mode

Answer 18

Added a continuous moving display of the returning echoes to evaluate the motion of the heart valves.

Question 19

Who was credited with discovering the first diagnostic applications of ultrasound?

Answer 19

Ian Donald

Question 20

Who refined techniques for obstetric procedures and discovered importance of a full bladder to visualize pelvic structures?

Answer 20

Ian Donald

Question 21

Who were the three men that developed the first compound contact B-mode scanner in 1962?

Answer 21

Holmes, Wright and Meyerdirk

Question 22

Who founded the Advanced Diagnostic Research (ADR) Corporation?

Answer 22

Wilcox

Question 23

Who developed a new type of scan converter that could process the returning echoes and display them as different shades of grey?

Answer 23

Kossoff

Question 24

Who developed the technique for determining blood flow volume from
Doppler velcoimetry measurements?

Answer 24

Baker

Question 25

What did the Japanese researchers do?

Answer 25

Color flow mapping techniques that demonstrate that tissue vascularity increases in the presence of malignant conditions.

Question 26

What is a Technician?

Answer 26

Someone with 6 weeks to 6 months of education beyond high school.

Question 27

What is a technologist?

Answer 27

Someone who specializes in a technology.

Question 28

Sonographer

Answer 28

A specific person who performs medical sonography.

Question 29

American Registry for Diagnostic Medical Sonography (ARDMS)

Answer 29

Provides valid high quality certification procedures for medical professionals who performed diagnostic medical sonography.

Question 30

Sonologist

Answer 30

Refers to any physician who interprets the ultrasound study.