Treating cardiac disease with catheter-based tissue heating

Rappaport, Carey M.

doi:10.1109/6668.990686

Cited by 10 publications

(4 citation statements)

References 39 publications

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“…Although the healthy tissue may still be heated less than the inner plaque surface, it is important to avoid overheating the artery wall, if possible. 426 Figure 1 shows a schematic view of an MBA.…”

Section: A Microwave Balloon Angioplasty (Mba)mentioning

confidence: 99%

“…Microwave power can ablate tissues at a greater depth and across a larger volume heating than RF ablation by using monopole and helical antennas. 426 In the literature, several investigators confi rm that microwave ablation is a satisfactory and safe method of cardiac ablation, and that it can be added to surgical procedures without undue risk to the patient. [428][429][430][431][432][433] The use of microwave energy for cardiac ablation was also successfully examined in open-chest dogs 434 and domestic pigs.…”

Section: B Microwave Ablation Cathetermentioning

confidence: 99%

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Thermal Therapy, Part III: Ablation Techniques

Habash

Bansal

Krewski

et al. 2007

Crit Rev Biomed Eng

121

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Ablative treatments are gaining increasing attention as an alternative to standard surgical therapies, especially for patients with contraindication or those who refuse open surgery. Thermal ablation is used in clinical applications mainly for treating heart arrhythmias, benign prostate hyperplasia, and nonoperable liver tumors; there is also increasing application to other organ sites, including the kidney, lung, and brain. Potential benefits of thermal ablation include reduced morbidity and mortality in comparison with standard surgical resection and the ability to treat nonsurgical patients. The purpose of this review is to outline and discuss the engineering principles and biological responses by which thermal ablation techniques can provide elevation of temperature in organs within the human body. Because of the individual problems associated with each type of treatment, a wide range of ablation techniques have evolved including cryoablation as well as ultrasound, radiofrequency (RF), microwave, and laser ablation. Aspects of each ablation technique, including mechanisms of action, equipment required, selection of eligible patients, treatment techniques, and patient outcomes are presented, along with a discussion of limitations of the techniques and future research directions.

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Section: A Microwave Balloon Angioplasty (Mba)mentioning

confidence: 99%

Section: B Microwave Ablation Cathetermentioning

confidence: 99%

Thermal Therapy, Part III: Ablation Techniques

Habash

Bansal

Krewski

et al. 2007

Crit Rev Biomed Eng

121

View full text Add to dashboard Cite

show abstract

“…Real-time temperature reading is important to ensure accurate therapy by preventing mismatches between the treatment source and target region caused by random or respiratory motion [51] and observing accurate heating levels distributed in massive target regions [7]. Rapid monitoring can also protect normal tissues from high-energy ablations because diseased tissues differ in terms of temperature rise [12,52,53]. Non-Cartesian PRFS has demonstrated the efficiency of a real-time temperature reading with a scan time of less than 1 s in each abdomen slice without motion-related artifacts [54].…”

Section: Discussionmentioning

confidence: 99%

Straightforward Magnetic Resonance Temperature Measurements Combined with High Frame Rate and Magnetic Susceptibility Correction

Kim,

2023

Bioengineering

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Proton resonance frequency shift (PRFS) is an MRI-based simple temperature mapping method that exhibits higher spatial and temporal resolution than temperature mapping methods based on T1 relaxation time and diffusion. PRFS temperature measurements are validated against fiber-optic thermal sensors (FOSs). However, the use of FOSs may introduce temperature errors, leading to both underestimation and overestimation of PRFS measurements, primarily due to material susceptibility changes caused by the thermal sensors. In this study, we demonstrated susceptibility-corrected PRFS (scPRFS) with a high frame rate and accuracy for suitably distributed temperatures. A single-echo-based background removal technique was employed for phase variation correction, primarily owing to magnetic susceptibility, which enabled fast temperature mapping. The scPRFS was used to validate the temperature fidelity by comparing the temperatures of fiber-optic sensors and conventional PRFS through phantom-mimicked human and ex vivo experiments. This study demonstrates that scPRFS measurements in agar-gel are in good agreement with the thermal sensor readings, with a root mean square error (RMSE) of 0.33–0.36 °C in the phantom model and 0.12–0.16 °C in the ex vivo experiment. These results highlight the potential of scPRFS for precise thermal monitoring and ablation in both low- and high-temperature non-invasive therapies.

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“…In particular, studies are being conducted to apply thermal effects of microwaves on human tissue, primarily in the treatment of heart diseases [1], [2] and cancers (in the liver and brain) [3] to [4]. In the former, the diseased is heated with an antenna introduced into the heart through a catheter, and study of the technology is majored in countries.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of heating characteristics in a new microwave coaxial-slot antenna for cancer therapy

Michiyama

Asanuma²,

Kuwano

2010

2010 International Conference on Electromagnetics in Advanced Applications

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We previously proposed a new coaxial-slot antenna of not whole conductor needle but one sandwiched dielectric between conductors for cancer therapy. The heating of the antenna was possessed of suppressed extension in the direction of the tip compared with that of the antenna of whole conductor needle, as a result of the experiment of liver phantom. In this paper, we calculate the heating characteristics of the antenna in the liver model. It is shown that the heating pattern is similar to the measured one although the value is different.

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Treating cardiac disease with catheter-based tissue heating

Cited by 10 publications

References 39 publications

Thermal Therapy, Part III: Ablation Techniques

Thermal Therapy, Part III: Ablation Techniques

Straightforward Magnetic Resonance Temperature Measurements Combined with High Frame Rate and Magnetic Susceptibility Correction

Numerical simulation of heating characteristics in a new microwave coaxial-slot antenna for cancer therapy

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