ultrasound - 2024 ARCADIA at Florida Tech

Question

Thermal ablation of abnormal tissue using this non-invasive, non-ionizing technique can be used to treat conditions ranging from fibroids to essential tremors. For 10 points each:

[10e] Name this technique in which acoustic energy is used to destroy tissues. This technology is also used to image fetuses.

ANSWER: ultrasound [accept US; accept high-intensity focused ultrasound or HIFU; accept magnetic resonance guided focused ultrasound or MRgFUS]

[10m] Mechanical, as opposed to thermal, destruction of tissue in ultrasound ablation primarily occurs via this process. Collapse of regions generated by this process can create enough energy to emit light in a process called sonoluminescence.

ANSWER: cavitation

[10h] Numerical models of ultrasound ablation may use the Pennes “bio” form of this equation, which modifies this equation with a blood perfusion term. This equation can be derived by combining Fourier’s law with a continuity equation for energy.

ANSWER: heat equation [accept bioheat equation]

<AY, Physics>

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Summary


2024 ARCADIA at BU	2024-12-06	Y	2	10.00	100%	0%	0%
2024 ARCADIA at Duke	2024-12-06	Y	1	10.00	100%	0%	0%
2024 ARCADIA Online	2025-05-17	Y	5	16.00	100%	40%	20%
2024 ARCADIA at Penn State	2024-12-06	Y	1	20.00	100%	0%	100%
2024 ARCADIA at UC Berkeley	2024-12-06	Y	1	20.00	100%	0%	100%
2024 ARCADIA at GT	2024-12-06	Y	1	10.00	100%	0%	0%
2024 ARCADIA at Warwick	2024-12-06	Y	1	10.00	100%	0%	0%
2024 ARCADIA at Waterloo	2024-11-09	N	2	20.00	100%	50%	50%
2024 ARCADIA at Illinois	2024-11-09	N	3	23.33	100%	67%	67%
2024 ARCADIA at Claremont	2024-11-02	N	1	20.00	100%	100%	0%

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