Minimal Arterial In-flow Protects Renal Oxygenation and Function During Porcine Partial Nephrectomy: Confirmation by Hyperspectral Imaging

Best, Sara L.; Thapa, Abhas; Holzer, Michael; Jackson, Neil; Mir, Saad; Cadeddu, Jeffrey A.; Zuzak, Karel J.

doi:10.1016/j.urology.2011.06.029

Cited by 23 publications

(19 citation statements)

References 14 publications

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“…[6][7][8] This technology uses a programmable DLPÒ (Digital Light Processing, Texas Instruments, Dallas, TX) spectral illuminator and a highly sensitive camera to detect the visible spectral properties of oxyhemoglobin and deoxyhemoglobin, generating a real-time image of cortical tissue oxygenation and thereby parenchymal perfusion. We have used HsI to assess the degree and rate of hemoglobin desaturation of the human kidney during open partial nephrectomy 7 as well as to demonstrate that differences in hilar occlusion technique affect renal oxygenation and function in a porcine model.…”

Section: Introductionmentioning

confidence: 99%

Renal Oxygenation Measurement During Partial Nephrectomy Using Hyperspectral Imaging May Predict Acute Postoperative Renal Function

Best

Thapa

Jackson

et al. 2013

Journal of Endourology

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Section: Introductionmentioning

confidence: 99%

Renal Oxygenation Measurement During Partial Nephrectomy Using Hyperspectral Imaging May Predict Acute Postoperative Renal Function

Best

Thapa

Jackson

et al. 2013

Journal of Endourology

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“…13 Additionally, 3-CCD contrast enhancement was used to compare renal oxygenation post-reperfusion to renal oxygenation before hilar clamping. 13 Zuzak and coworkers 30,31 have monitored tissue oxygenation intraoperatively with a DLP® hyperspectral imaging system, at near-video frame rates, to study the effects of artery-only clamping and ice slush application on renal oxygenation. 32 Their results indicated that artery-only clamping and 7-10 min of ice slush application can help to minimize the decrease in renal oxygenation during partial nephrectomies.…”

Section: Discussionmentioning

confidence: 99%

Evidence of a heterogeneous tissue oxygenation: renal ischemia/reperfusion injury in a large animal model

Crane¹,

Huffman

Alemozaffar

et al. 2013

J. Biomed. Opt

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Abstract. Renal ischemia that occurs intraoperatively during procedures requiring clamping of the renal artery (such as renal procurement for transplantation and partial nephrectomy for renal cancer) is known to have a significant impact on the viability of that kidney. To better understand the dynamics of intraoperative renal ischemia and recovery of renal oxygenation during reperfusion, a visible reflectance imaging system (VRIS) was developed to measure renal oxygenation during renal artery clamping in both cooled and warm porcine kidneys. For all kidneys, normothermic and hypothermic, visible reflectance imaging demonstrated a spatially distinct decrease in the relative oxy-hemoglobin concentration (%HbO 2 ) of the superior pole of the kidney compared to the middle or inferior pole. Mean relative oxy-hemoglobin concentrations decrease more significantly during ischemia for normothermic kidneys compared to hypothermic kidneys. VRIS may be broadly applicable to provide an indicator of organ ischemia during open and laparoscopic procedures. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…The possibility of using the HSI technique to monitor tissue oxygenation during porcine partial nephrectomy was recently evaluated by Best et al (29). The study was conducted on 14 pigs with a solitary kidney that underwent open partial nephrectomy with warm ischemia.…”

Section: Visualization Of Organs and Tissues During Surgerymentioning

confidence: 99%

Hyperspectral Imaging in the Medical Field: Present and Future

Călin

Parasca

Săvăstru

et al. 2013

Applied Spectroscopy Reviews

186

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Hyperspectral imaging is an optical method that provides a large amount of information about the investigated object. Its medical applications are reviewed in this article, including tumor delimitation and identification, assessing tissue perfusion and its pathological conditions (including some complications like diabetic foot ulceration), making accurate surgical decisions, evaluating the health of dental structures, etc. Many of the articles show very promising results that required brief comments by the authors. It is clear that choosing the appropriate hyperspectral imaging system for each medical field, together with the most reliable hyperspectral image processing methods, are the main goals of future studies, before hyperspectral imaging becomes a widely applicable evaluation method in medicine. The authors try to answer some questions on this topic and set up some directions for future research.

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Minimal Arterial In-flow Protects Renal Oxygenation and Function During Porcine Partial Nephrectomy: Confirmation by Hyperspectral Imaging

Cited by 23 publications

References 14 publications

Renal Oxygenation Measurement During Partial Nephrectomy Using Hyperspectral Imaging May Predict Acute Postoperative Renal Function

Renal Oxygenation Measurement During Partial Nephrectomy Using Hyperspectral Imaging May Predict Acute Postoperative Renal Function

Evidence of a heterogeneous tissue oxygenation: renal ischemia/reperfusion injury in a large animal model

Hyperspectral Imaging in the Medical Field: Present and Future

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