Specification of acoustic output level and measurement uncertainty in ultrasonic exposimetry

Ziskin, M.C.

doi:10.1109/tuffc.2003.1226546

Cited by 20 publications

(9 citation statements)

References 4 publications

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“…All acoustic intensities are quoted as free-field, spatial-peak temporal-average values, and the estimated uncertainty is ±20% (95% confidence interval). This overall uncertainty includes Type A uncertainties from the variation in measurements of the radiation force balance and beam width as well as Type B uncertainties from the calibration accuracy of the radiation force balance, resolution of the radiation force balance, finite-amplitude effects, accuracy of positioning system, and resolution of the hydrophone (Ziskin 2003). …”

Section: Methodsmentioning

confidence: 99%

High-Frequency Ultrasound M-Mode Imaging for Identifying Lesion and Bubble Activity During High-Intensity Focused Ultrasound Ablation

Kumon¹,

Gudur²,

Zhou³

et al. 2012

Ultrasound in Medicine & Biology

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Effective real-time monitoring of high-intensity focused ultrasound (HIFU) ablation is important for application of HIFU technology in interventional electrophysiology. This study investigated rapid, high-frequency M-mode ultrasound imaging for monitoring spatiotemporal changes during HIFU application. HIFU (4.33 MHz, 1 kHz PRF, 50% duty cycle, 1 s, 2600 – 6100 W/cm2) was applied to ex-vivo porcine cardiac tissue specimens with a confocally and perpendicularly aligned high-frequency imaging system (Visualsonics Vevo 770, 55 MHz center frequency). Radiofrequency (RF) data from M-mode imaging (1 kHz PRF, 2 s × 7 mm) was acquired before, during, and after HIFU treatment (n = 12). Among several strategies, the temporal maximum integrated backscatter with a threshold of +12 dB change showed the best results for identifying final lesion width (receiver-operating characteristic curve area 0.91 ± 0.04, accuracy 85 ± 8%, as compared to macroscopic images of lesions). A criterion based on a line-to-line decorrelation coefficient is proposed for identification of transient gas bodies.

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Section: Methodsmentioning

confidence: 99%

High-Frequency Ultrasound M-Mode Imaging for Identifying Lesion and Bubble Activity During High-Intensity Focused Ultrasound Ablation

Kumon¹,

Gudur²,

Zhou³

et al. 2012

Ultrasound in Medicine & Biology

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show abstract

“…The material contained in this chapter has been adopted as the current standard on expressing uncertainty in ultrasound measurements by the American Institute of Ultrasound in Medicine (AIUM, Laurel, MD), the National Electrical Manufacturers Association (NEMA, Rosslyn, VA), and the Federal Drug Administration (FDA, Silver Spring, MD) [Ziskin, 2003]. …”

Section: Acoustic and Electromagnetic Millimeter Wavesmentioning

confidence: 99%

Millimeter waves: Acoustic and electromagnetic

Ziskin

2012

Bioelectromagnetics

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This article is the presentation I gave at the D'Arsonval Award Ceremony on June 14, 2011 at the Bioelectromagnetics Society Annual Meeting in Halifax, Nova Scotia. It summarizes my research activities in acoustic and electromagnetic millimeter waves over the past 47 years. My earliest research involved acoustic millimeter waves, with a special interest in diagnostic ultrasound imaging and its safety. For the last 21 years my research expanded to include electromagnetic millimeter waves, with a special interest in the mechanisms underlying millimeter wave therapy. Millimeter wave therapy has been widely used in the former Soviet Union with great reported success for many diseases, but is virtually unknown to Western physicians. I and the very capable members of my laboratory were able to demonstrate that the local exposure of skin to low intensity millimeter waves caused the release of endogenous opioids, and the transport of these agents by blood flow to all parts of the body resulted in pain relief and other beneficial effects.

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“…This topic has been addressed in an article that includes a discussion of the specification of uncertainties for the output of a single transducer, a transducer model, and multiple transducer/console combinations for a particular model [60]. The procedures described would be necessary when reporting maximum output values as specified, for instance, in [46].…”

Section: Measurements In Complex Scanning Modesmentioning

confidence: 99%

Progress in medical ultrasound exposimetry

Harris

2005

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Biomedical applications of ultrasound have experienced tremendous growth over the past 50 years. Early work in thermal therapy and surgery soon was followed by diagnostic imaging and Doppler. Because patient safety was an important issue from the beginning, the study of methods for measuring exposure levels, and their relationship to possible biological effects, paralleled the growth of the various therapeutic and diagnostic techniques. The diverse conditions of use have presented a range of exposure measurement challenges, and the sensors and techniques used to evaluate ultrasound fields have had to evolve as new or expanded clinical applications have emerged. In this paper some of the more notable of these developments are presented and discussed. Topics covered include devices and techniques, methods of calibration, progress in standardization, and current problem areas, including the effects of nonlinear propagation. Some early methods are described, but emphasis is given to more recent work applicable to present and future uses of ultrasound in medicine and biology.

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Specification of acoustic output level and measurement uncertainty in ultrasonic exposimetry

Cited by 20 publications

References 4 publications

High-Frequency Ultrasound M-Mode Imaging for Identifying Lesion and Bubble Activity During High-Intensity Focused Ultrasound Ablation

High-Frequency Ultrasound M-Mode Imaging for Identifying Lesion and Bubble Activity During High-Intensity Focused Ultrasound Ablation

Millimeter waves: Acoustic and electromagnetic

Progress in medical ultrasound exposimetry

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