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Questions and Answers
What skill is essential for ensuring clear communication with patients as a sonographer?
What is NOT included in the information that ultrasound can provide regarding pathology?
Which of the following best describes the sonographer's responsibility regarding diagnostic reporting?
In which work environment would you likely encounter multiple specialized techs dealing with booked patients?
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Which quality is NOT a critical behavioral trait for a sonographer?
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What is the assumed speed of sound used in medical ultrasound?
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What is the relationship between frequency and wavelength in diagnostic ultrasound?
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What is one major consequence of using a higher frequency in ultrasound imaging?
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What does an echogenic medium produce?
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What effect does high acoustic impedance mismatch have on ultrasound?
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The formula for acoustic impedance (Z) is based on which two factors?
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What is a critical aspect to achieve optimal sonographic images?
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What happens to sound waves when they encounter different media in ultrasound imaging?
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What frequency is typically selected for performing a thyroid ultrasound?
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Which patient condition is most likely to require an abdominal ultrasound?
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What does ALARA stand for in ultrasound practice?
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Which of the following is NOT a typical application of ultrasound imaging?
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What is emphasized to minimize thermal bioeffects during an ultrasound examination?
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Which best describes the role of the ultrasound technologist?
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Why is ultrasound considered a safe diagnostic imaging technique?
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How can proper ergonomics be established during ultrasound examinations?
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What frequency range is typically used in diagnostic ultrasound?
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Which of the following processes contributes to the overall sonographic image?
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What is the primary purpose of the ultrasound technologist within diagnostic imaging?
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What happens during the reflection process in ultrasound?
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What term describes the overall reduction of the transmitted ultrasound beam?
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Which of the following is NOT a process associated with ultrasound imaging?
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Which exam type is often associated with the common perception that ultrasound is primarily for babies?
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What role does critical thinking play in the ultrasound field?
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Which organization must sonographers in Ontario register with to practice legally?
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What is required for the maintenance of registration as a sonographer in Ontario?
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What does the Code of Ethics primarily aim to assure?
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What is a responsibility of sonographers related to their professional registration?
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In a tertiary care hospital, what aspect of sonography work is notably highlighted?
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Which of the following is NOT required for a sonographer to maintain their registration?
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What does the abbreviation CME stand for in the context of sonography practice?
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What is one of the core functions of the Code of Ethics in the field of sonography?
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Study Notes
Ultrasound Basics
- Ultrasound uses sound waves above the human hearing range (2-24 MHz)
- Higher frequency = better resolution but less penetration, lower frequency = less resolution, greater penetration.
- Acoustic Impedance (Z) is calculated from density and velocity and influences sound wave interactions with tissue: reflection, absorption, transmission, scattering, and refraction (causing artifacts).
- The machine uses the time of flight of the reflected sound wave and assumed speed of sound (1540 m/s) to create images.
- Bright areas in images = echogenic, dark areas = anechoic, indicating varying tissue properties.
- Gel is used during ultrasound to eliminate air between the transducer and the skin, improving sound wave transmission.
- Ultrasound is safe for vulnerable patients due to lack of ionizing radiation.
Ultrasound in Diagnostic Imaging
- Various ultrasound examinations are performed
- Fetal growth/monitoring, abdominal organs (liver, kidneys, pancreas, gallbladder, spleen), pelvic organs, blood vessels, joints, muscles, tendons, heart, brain (neonates), bowel, intraoperative procedures.
- Every exam requires a requisition and clinical question to guide the protocol.
- Ultrasound images can be analyzed for: location, size, mobility, compressibility, vascularity, composition, and borders.
- Sonographers create technical impressions with measurements and descriptions of pathology or the absence of pathology (NAD).
Considerations for Ultrasound Technology
- ALARA: As Low As Reasonably Achievable, minimizing power output, time of stationary beam, and use of Doppler
- Sonographer skills involve communication, critical thinking, judgment, technical proficiency, and professional behavior.
- Ultrasound technology is used in diverse environments: private clinics, community hospitals, tertiary care hospitals.
Career in Ultrasound
- Sonography Canada and CMRITO are organizations for sonographer registration and certification in Canada
- Maintenance of registration requires annual fees, continuing medical education (CME) credits, liability insurance, and adherence to policies and codes.
- Sonographers are responsible for maintaining records of registration and CME credits.
- Key factors for a fulfilling career in sonography:
- Passion for patient care
- Commitment to teamwork and collaboration
- Strong communication skills
- Adaptability to different work environments
- Ongoing desire to learn and improve
- Understanding of equipment capabilities and limitations
- Awareness of ethical and legal considerations.
Ultrasound as a Reliable Imaging Modality
- Ultrasound is valuable due to its safety, portability, and economical nature.
- It can be used for acute and routine exams.
- Challenges include: working in darkened environments, patient preparation, and managing workflow, and potential ergonomics issues.
- Sonographers are essential players in the diagnostic imaging process. They provide valuable information to clinicians.
- Benefits include: providing diagnostic certainty, guiding interventions, and improving overall patient outcomes.
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Description
This quiz covers the fundamental concepts of ultrasound, including the principles of sound wave interaction with tissues and the role of acoustic impedance. Additionally, it addresses various applications of ultrasound in diagnostic imaging, such as fetal monitoring and organ examination.
