16-HIFU procedures require image guidance. Which of the following imaging modali

Question

16-HIFU procedures require image guidance. Which of the following imaging modalities are typically used for image-guidance in HIFU procedures? a. B-mode imaging with contrast agents b. Power Doppler c. Magnetic Resonance Imaging d. Near infrared imaging 17-HIFU aims at destroying cancerous cells by a. b. c. mechanical damage thermal damage a combination of thermal and mechanical damage 18-HIFU requires a. b. c. d. a high frequency transducer a high power transducer a transducer focused with a lens a transducer array

Explanation / Answer

16.Correct answer is: c.magnetic resonance imaging

Reason:Image guidance in HIFU makes use of  MRI, X-ray and Diagnostic Ultrasound. MRI helps in generation of tissue contrast so that target can be for localized and tissue damage detection can be possible.

17.Correct answer is: c.a combination of thermal and mechanical damage.

Reason:Focused ultrasound that is allowed to concentrate on the target cancer tissue possess energy that have thermal or mechanical effects that destroys the tissue.

18.Correct answer is: d. a transducer array

Reason':Tranducer array also known as phased array is mostly used in HIFU.

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