Evaluation of Ischemic Damage in the Skeletal Muscle with the Use of Electrical Properties

Hayashi, Masatoshi; Sasaki, Eisaku; Senga, Shoshi; Murakawa, Shinji; Mori, Yoshio; Furusawa, Yasunobu; Banodo, Michiya

doi:10.1006/jsre.1998.5477

Cited by 7 publications

(4 citation statements)

References 5 publications

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“…Noninvasive techniques to monitor temperature have many medical applications because of the close interrelationships among tissue temperature, metabolism, and physiology. Such applications include aiding in the use of hyperthermia for cancer treatment (1, 2), detection and localization of tumors, diagnosis of metabolic abnormalities (3), and the study of muscle exercise and recovery (4). The conventional devices for monitoring tissue temperature include thermocouples, thermistors, and fiberoptic probes (5).…”

mentioning

confidence: 99%

Noninvasive MR thermometry using paramagnetic lanthanide complexes of 1,4,7,10‐tetraazacyclodoecane‐α,α′,α″,α‴‐tetramethyl‐1,4,7,10‐tetraacetic acid (DOTMA^4–)

Hekmatyar

Hopewell

Pakin

et al. 2005

Magnetic Resonance in Med

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mentioning

confidence: 99%

Noninvasive MR thermometry using paramagnetic lanthanide complexes of 1,4,7,10‐tetraazacyclodoecane‐α,α′,α″,α‴‐tetramethyl‐1,4,7,10‐tetraacetic acid (DOTMA^4–)

Hekmatyar

Hopewell

Pakin

et al. 2005

Magnetic Resonance in Med

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“…Also, we evaluated ischemic damage in the skeletal muscle with the change of dielectric conductivity 3 h after reperfusion [9]. However in the clinical case, we must instantaneously evaluate ischemic skeletal muscle injury when the patient first presents or just before reperfusion and decide what care is needed.…”

Section: Discussionmentioning

confidence: 99%

“…In our previous study we evaluated ischemic damage in the skeletal muscle with the change of dielectric conductivity 3 h after reperfusion [9]. We also evaluated ischemic injury in the heart, liver, and kidney, with the changes of dielectric properties [10 -15].…”

Section: Introductionmentioning

confidence: 99%

Predictability of Dielectric Properties for Ischemic Injury of the Skeletal Muscle before Reperfusion

Miyauchi

Sasaki

Hayashi

et al. 1999

Journal of Surgical Research

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“…The closest are those conducted by Strand-Amundsen et al 6 , 7 reporting trans-intestinal measurements of electrical parameters during ischemia and reperfusion in the 1 kHz–1 MHz range. Some studies have reported that dielectric properties are useful in evaluating viability of heart and liver after ischemia and reperfusion injury 8 – 11 . Knowledge about whether dielectric relaxation spectroscopy can be used to evaluate the small intestine condition and how different ischemia and reperfusion conditions affect the dielectric properties of the small intestine is still lacking.…”

Section: Introductionmentioning

confidence: 99%

Small intestinal viability assessment using dielectric relaxation spectroscopy and deep learning

Hou

Strand-Amundsen

Tronstad

et al. 2022

Sci Rep

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Intestinal ischemia is a serious condition where the surgeon often has to make important but difficult decisions regarding resections and resection margins. Previous studies have shown that 3 h (hours) of warm full ischemia of the small bowel followed by reperfusion appears to be the upper limit for viability in the porcine mesenteric ischemia model. However, the critical transition between 3 to 4 h of ischemic injury can be nearly impossible to distinguish intraoperatively based on standard clinical methods. In this study, permittivity data from porcine intestine was used to analyze the characteristics of various degrees of ischemia/reperfusion injury. Our results show that dielectric relaxation spectroscopy can be used to assess intestinal viability. The dielectric constant and conductivity showed clear differences between healthy, ischemic and reperfused intestinal segments. This indicates that dielectric parameters can be used to characterize different intestinal conditions. In addition, machine learning models were employed to classify viable and non-viable segments based on frequency dependent dielectric properties of the intestinal tissue, providing a method for fast and accurate intraoperative surgical decision-making. An average classification accuracy of 98.7% was obtained using only permittivity data measured during ischemia, and 96.2% was obtained with data measured during reperfusion. The proposed approach allows the surgeon to get accurate evaluation from the trained machine learning model by performing one single measurement on an intestinal segment where the viability state is questionable.

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Evaluation of Ischemic Damage in the Skeletal Muscle with the Use of Electrical Properties

Cited by 7 publications

References 5 publications

Noninvasive MR thermometry using paramagnetic lanthanide complexes of 1,4,7,10‐tetraazacyclodoecane‐α,α′,α″,α‴‐tetramethyl‐1,4,7,10‐tetraacetic acid (DOTMA^4–)

Noninvasive MR thermometry using paramagnetic lanthanide complexes of 1,4,7,10‐tetraazacyclodoecane‐α,α′,α″,α‴‐tetramethyl‐1,4,7,10‐tetraacetic acid (DOTMA^4–)

Predictability of Dielectric Properties for Ischemic Injury of the Skeletal Muscle before Reperfusion

Small intestinal viability assessment using dielectric relaxation spectroscopy and deep learning

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Evaluation of Ischemic Damage in the Skeletal Muscle with the Use of Electrical Properties

Cited by 7 publications

References 5 publications

Noninvasive MR thermometry using paramagnetic lanthanide complexes of 1,4,7,10‐tetraazacyclodoecane‐α,α′,α″,α‴‐tetramethyl‐1,4,7,10‐tetraacetic acid (DOTMA4–)

Noninvasive MR thermometry using paramagnetic lanthanide complexes of 1,4,7,10‐tetraazacyclodoecane‐α,α′,α″,α‴‐tetramethyl‐1,4,7,10‐tetraacetic acid (DOTMA4–)

Predictability of Dielectric Properties for Ischemic Injury of the Skeletal Muscle before Reperfusion

Small intestinal viability assessment using dielectric relaxation spectroscopy and deep learning

Contact Info

Product

Resources

About

Noninvasive MR thermometry using paramagnetic lanthanide complexes of 1,4,7,10‐tetraazacyclodoecane‐α,α′,α″,α‴‐tetramethyl‐1,4,7,10‐tetraacetic acid (DOTMA^4–)

Noninvasive MR thermometry using paramagnetic lanthanide complexes of 1,4,7,10‐tetraazacyclodoecane‐α,α′,α″,α‴‐tetramethyl‐1,4,7,10‐tetraacetic acid (DOTMA^4–)