Ultrasound in Speech Therapy

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What is the main limitation of using markers or their attached wires to track fleshpoints during speech?

They are not visible during ultrasound imaging
They are only suitable for tracking 2D movements
They require radiation exposure
They may interfere with natural speech (correct)

What is the frequency of the ultrasound wave used in imaging the tongue?

10 MHz
1 MHz (correct)
1 kHz
100 kHz

What is the advantage of using X-ray Microbeam to track articulatory movements?

It can image the tongue tip and epiglottis accurately
It allows for rapid and accurate tracking of articulatory movements (correct)
It is a low-cost procedure
It is a non-invasive procedure

What is the limitation of using ultrasound imaging to study articulation?

It cannot image the tongue tip and epiglottis accurately (C) Signup and view all the answers

What is the purpose of using reference points in X-ray Microbeam tracking?

To compute the distance between pellets and stable reference points (C) Signup and view all the answers

What is a disadvantage of using X-ray Microbeam to track articulatory movements?

It exposes subjects to radiation (A) Signup and view all the answers

What is a limitation of Electromagnetic Midsagittal Articulograph (EMMA) in terms of data collection?

It can only collect data at midline (D) Signup and view all the answers

What is an advantage of Electropalatography (EPG) in articulation analysis?

It can be used in conjunction with other instruments (A) Signup and view all the answers

What is a limitation of Optotrack in terms of its use?

It is limited to external use and cannot be used inside the mouth (C) Signup and view all the answers

How does Electromagnetic Midsagittal Articulograph (EMMA) track fleshpoint movement?

By measuring the movement of small receiver coils through alternating magnetic fields (D) Signup and view all the answers

What is an advantage of Optotrack in articulation analysis?

It can track movement of the lips and jaw in three-dimensional space (D) Signup and view all the answers

How does Electropalatography (EPG) generate a signal?

When the tongue touches a transducer embedded in a palatal prosthesis (C) Signup and view all the answers

What is the primary function of the velum during speech?

To regulate airflow between the nasal and oral cavities (A) Signup and view all the answers

What is the result of too much air flowing from the larynx into the nasal cavity?

Hypernasality (D) Signup and view all the answers

What is the cause of oral consonants being produced as nasal consonants?

All of the above (D) Signup and view all the answers

What is the effect of a blocked passage in the nasal cavity during speech?

Hyponasality (B) Signup and view all the answers

What is the term for the inadequate closure of the nasal cavity during speech?

Velopharyngeal incompetence (A) Signup and view all the answers

What is the result of the velum remaining raised and not opening adequately during speech?

Hyponasality (D) Signup and view all the answers