DMSO 1210 FINAL | UPDATED Questions with 100%
Verified Answers
Q1: What is ultrasound?
A: Ultrasound is sound with frequencies above human hearing, greater than 20,000 Hz (20
kHz). Diagnostic ultrasound commonly uses frequencies between 1-20 MHz.
Q2: What is sonography?
A: Sonography is the diagnostic imaging application of ultrasound using sound waves to
create images of internal body structures.
Q3: Who discovered x-rays?
A: Wilhelm Roentgen discovered x-rays in 1895.
Q4: Who discovered the piezoelectric effect?
A: Jacques and Pierre Curie discovered the piezoelectric effect in 1880.
Q5: What is the piezoelectric effect?
A: The ability of certain crystals to produce electrical energy when pressure is applied.
Q6: What is the reverse piezoelectric effect?
A: Electrical energy causes crystals to vibrate and create sound waves.
Q7: Why is the piezoelectric effect important?
A: It allows transducers to generate and receive ultrasound waves.
Q8: When did medical ultrasound research begin?
A: After World War II.
Q9: Who developed the first medical application of ultrasound?
A: Dr. George Ludwig while attempting to detect gallstones.
Q10: Who is considered the father of medical ultrasound?
A: Dr. John Wild.
Q11: What did Dr. John Wild contribute?
A: He developed techniques to distinguish healthy from cancerous tissue using ultrasound.
Q12: Who built the first linear B-mode instrument?
,A: Dr. John Wild and Dr. John Reid.
Q13: What is M-mode ultrasound?
A: Motion mode ultrasound displaying movement of structures over time.
Q14: Who explored M-mode echocardiography?
A: Drs. Inge Edler and Carl Hellmuth Hertz.
Q15: What is Doppler theory?
A: Christian Doppler discovered that sound frequency changes when the source or receiver
is moving.
Q16: What is Doppler ultrasound used for?
A: Evaluating blood flow and movement.
Q17: What is color flow imaging?
A: A Doppler technique displaying blood flow in color.
Q18: What are the levels of sound?
A: Infrasonic = below human hearing; Audible = 20 Hz-20 kHz; Ultrasound = above 20 kHz.
Q19: What is the difference between a technician and a
technologist?
A: Technician = performs technical tasks; Technologist = more advanced education and
responsibilities.
Q20: What is ARDMS?
A: American Registry for Diagnostic Medical Sonographers.
Q21: What is Sonographer Awareness Week?
A: An annual event recognizing sonographers and their contributions.
Q22: What frequencies can humans hear?
A: 20 Hz to 20,000 Hz.
Q23: What frequencies are used in diagnostic ultrasound?
A: Approximately 1-20 MHz.
Q24: What is sonar?
A: Technology using sound waves to locate underwater objects.
, Q25: What is lithotripsy?
A: Use of ultrasound to break up kidney stones or gallstones.
Q26: What is B-mode ultrasound?
A: Brightness mode ultrasound producing 2D images.
Q27: What is continuous wave Doppler?
A: Doppler mode continuously transmitting and receiving ultrasound signals.
Q28: What is real-time imaging?
A: Continuous image updating showing movement live.
Q29: What is empathy?
A: Understanding and sharing another person's feelings.
Q30: What is sympathy?
A: Feeling sorrow or pity for another person.
Q31: What is compassion?
A: Concern for another's suffering with a desire to help.
Q32: What is HIPAA?
A: Health Insurance Portability and Accountability Act protecting patient privacy.
Q33: What are universal precautions?
A: Protective measures preventing contact with infectious materials using gloves, masks,
gowns, and eye protection.
Q34: What are standard precautions?
A: CDC infection prevention guidelines for all body fluids.
Q35: Why are chaperones important?
A: Protect patient privacy and legally protect sonographers.
Q36: Which exams commonly require chaperones?
A: Vaginal, breast, penile, perineal, labial, and scrotal ultrasounds.
Q37: What is transvaginal ultrasound?
A: Intracavitary ultrasound using a vaginal probe.
Verified Answers
Q1: What is ultrasound?
A: Ultrasound is sound with frequencies above human hearing, greater than 20,000 Hz (20
kHz). Diagnostic ultrasound commonly uses frequencies between 1-20 MHz.
Q2: What is sonography?
A: Sonography is the diagnostic imaging application of ultrasound using sound waves to
create images of internal body structures.
Q3: Who discovered x-rays?
A: Wilhelm Roentgen discovered x-rays in 1895.
Q4: Who discovered the piezoelectric effect?
A: Jacques and Pierre Curie discovered the piezoelectric effect in 1880.
Q5: What is the piezoelectric effect?
A: The ability of certain crystals to produce electrical energy when pressure is applied.
Q6: What is the reverse piezoelectric effect?
A: Electrical energy causes crystals to vibrate and create sound waves.
Q7: Why is the piezoelectric effect important?
A: It allows transducers to generate and receive ultrasound waves.
Q8: When did medical ultrasound research begin?
A: After World War II.
Q9: Who developed the first medical application of ultrasound?
A: Dr. George Ludwig while attempting to detect gallstones.
Q10: Who is considered the father of medical ultrasound?
A: Dr. John Wild.
Q11: What did Dr. John Wild contribute?
A: He developed techniques to distinguish healthy from cancerous tissue using ultrasound.
Q12: Who built the first linear B-mode instrument?
,A: Dr. John Wild and Dr. John Reid.
Q13: What is M-mode ultrasound?
A: Motion mode ultrasound displaying movement of structures over time.
Q14: Who explored M-mode echocardiography?
A: Drs. Inge Edler and Carl Hellmuth Hertz.
Q15: What is Doppler theory?
A: Christian Doppler discovered that sound frequency changes when the source or receiver
is moving.
Q16: What is Doppler ultrasound used for?
A: Evaluating blood flow and movement.
Q17: What is color flow imaging?
A: A Doppler technique displaying blood flow in color.
Q18: What are the levels of sound?
A: Infrasonic = below human hearing; Audible = 20 Hz-20 kHz; Ultrasound = above 20 kHz.
Q19: What is the difference between a technician and a
technologist?
A: Technician = performs technical tasks; Technologist = more advanced education and
responsibilities.
Q20: What is ARDMS?
A: American Registry for Diagnostic Medical Sonographers.
Q21: What is Sonographer Awareness Week?
A: An annual event recognizing sonographers and their contributions.
Q22: What frequencies can humans hear?
A: 20 Hz to 20,000 Hz.
Q23: What frequencies are used in diagnostic ultrasound?
A: Approximately 1-20 MHz.
Q24: What is sonar?
A: Technology using sound waves to locate underwater objects.
, Q25: What is lithotripsy?
A: Use of ultrasound to break up kidney stones or gallstones.
Q26: What is B-mode ultrasound?
A: Brightness mode ultrasound producing 2D images.
Q27: What is continuous wave Doppler?
A: Doppler mode continuously transmitting and receiving ultrasound signals.
Q28: What is real-time imaging?
A: Continuous image updating showing movement live.
Q29: What is empathy?
A: Understanding and sharing another person's feelings.
Q30: What is sympathy?
A: Feeling sorrow or pity for another person.
Q31: What is compassion?
A: Concern for another's suffering with a desire to help.
Q32: What is HIPAA?
A: Health Insurance Portability and Accountability Act protecting patient privacy.
Q33: What are universal precautions?
A: Protective measures preventing contact with infectious materials using gloves, masks,
gowns, and eye protection.
Q34: What are standard precautions?
A: CDC infection prevention guidelines for all body fluids.
Q35: Why are chaperones important?
A: Protect patient privacy and legally protect sonographers.
Q36: Which exams commonly require chaperones?
A: Vaginal, breast, penile, perineal, labial, and scrotal ultrasounds.
Q37: What is transvaginal ultrasound?
A: Intracavitary ultrasound using a vaginal probe.
