Name: simultaneous evaluation of cerebral hemodynamics and light scattering properties of the in vivo rat brain using multispectral diffuse reflectance imaging
Uploaded: 2017-05-07T15:00:00
Description: Watch this Scientific Journal Video about Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging at J

Part of this work was supported by a Grant-in-Aid for Scientific Research (C) from the Japanese Society for the Promotion of Science (25350520, 22500401, 15K06105) and the US-ARMY ITC-PAC Research and Development Project (FA5209-15-P-0175).

동물 관리, 준비, 실험 프로토콜은 도쿄 농공 대학의 동물 연구위원회에 의해 승인되었다. 이 방법의 경우, 래트는 음식과 물을 사용할 수의와, 제어 된 환경 (24 ° C, 12 시간 광 / 암주기)에 수용된다. 광파 멀티 스펙트럼 확산 반사율 이미징 시스템의 1. 건설 <ol><li> 산의 중심 파장 협 아홉 광학 간섭 필터 500, 520, 540, 560, 570, 580, 600, 730, 및 전동 필터 휠의 필터 구...

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이 프로토콜에서 가장 중요한 단계는 두개골 창을 만들 수있는 얇아 두개골 지역의 제거이다; 이 예기치 않은 출혈을 방지하기 위해주의 깊게 수행해야합니다. 이 단계는 높은 정밀도로 반사 이미지를 확산 다중 분광 높은 품질을 얻는 것이 중요하다. 실체 현미경의 사용은 수술 가능한 경우에 권장됩니다. 젤라틴 스폰지의 작은 조각 지혈하는 데 유용합니다. 이 문서에서 ?...

멀티 스펙트럼 확산 반사율 영상은 피질 조직에서 고유의 광 신호 (손실이 최소화)의 공간지도를 획득하기위한 가장 일반적인 방법이다. 형태 학적 변화에 의해 유발 된 광 산란 특성의 광 흡수 변화 의한 피질 혈류 역학에 대한 산란 성질, 감소 또는 미토콘드리아 내의 사이토 크롬의 산화에 따라 흡수 편차 및 변형 : 손실이 최소화 주로 세 현상에 기인하는 생체의 뇌에서 관찰 1. 근적외선 (NIR) 분광 범위 (VIS)에 보이는 빛을 효과적으로 흡수 및 생체 조직에 의해 산란된다. 생체의 뇌의 확산 반사율 스펙트럼은 흡수 및 산란 스펙트럼을 특징으로한다. 감소 된 스 캐터링 계수는 단조로운 산란 스펙트럼 전시에 VIS 투 NIR 파장 범위의 결과 뇌 조직들 &#39;μ긴 파장에서 더 작은 크기를 보내고. 감소 된 산란 스펙트럼 계수 μ는 S &#39;(λ)는 s의 μ로서 멱 함수 (2), (3)의 형태로 근사 할 수있는&#39;(λ)는 λ × -b =. 산란 파워는 조직 B (2, 3) 살아있는 생물에서 산란의 크기에 관련된다. 조직 및 대뇌 피질의 생체 조직의 생존을 감소 형태 학적 변화는 생물학적 산란 4, 5, 6, 7, 8, 9의 크기에 영향을 미칠 수있다. 멀티 스펙트럼 확산 반사율 촬상 용 광학 시스템을 용이 백열 리로 구성 될 수있다GHT 원본, 간단한 광학 구성 요소 및 단색 충전 결합 소자 (CCD). 따라서, 다양한 알고리즘과 멀티 스펙트럼 확산 반사율 촬상 광학 시스템은 피질 혈류 역학 및 / 또는 티슈 형태 10, 11, 12, 13, 14, 15, 16, 17, 18을 평가하기 위해 사용되었다. 본 문서에 기재된 방법은 혈류 역학과 종래의 멀티 스펙트럼 확산 반사율 이미징 시스템을 사용하여 생체 내에서 래트 뇌 조직의 산란 특성 모두를 시각화하는데 사용된다. 대안 기술을 통해이 방법의 장점은 대뇌 혈류 역학과 대뇌 피질의 조직 모두의 시공간적 변화를 평가 할 수있는 기능입니다형태뿐만 아니라 다양한 뇌 기능 장애의 동물 모델에의 적용. 따라서, 방법은 외상성 뇌 손상, 간질 발작, 뇌졸중, 허혈의 조사에 적합합니다.

<table border="0" cellpadding="0" cellspacing="0" width="856">
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		<col />
	</colgroup>
	<tbody>
		<tr height="36">
			<td height="36" style="height:36px;width:289px;">150-W halogen-lamp light source</td>
			<td style="width:281px;">Hayashi Watch Works Co., Ltd, Tokyo, Japan</td>
			<td style="width:119px;">LA-150SAE</td>
			<td style="width:167px;"></td>
		</tr>
		<tr height="36">
			<td height="36" style="height:36px;">Light guide</td>
			<td style="width:281px;">Hayashi Watch Works Co., Ltd, Tokyo, Japan</td>
			<td>LGC1-5L1000</td>
			<td></td>
		</tr>
		<tr height="36">
			<td height="36" style="height:36px;">Collecting lens</td>
			<td style="width:281px;">Hayashi Watch Works Co., Ltd, Tokyo, Japan</td>
			<td>SH-F16</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Interference filters l@500nm</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>#65088</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Interference filters l@520nm</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>#65093</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Interference filters l@540nm</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>#65096</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Interference filters l@560nm</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>#67766</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Interference filters l@570nm</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>#67767</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Interference filters l@580nm</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>#65646</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Interference filters l@600nm</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>#65102</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Interference filters l@730nm</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>#65115</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Interference filters l@760nm</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>#67777</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Motorized filter wheel&#160;</td>
			<td>Andover Corporation, NH, USA</td>
			<td>FW-MOT-12.5</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">16-bit cooled CCD camera</td>
			<td>Bitran, Japan</td>
			<td>BS-40</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">Video zoom lens</td>
			<td>Edmund Optics Japan Ltd, Tokyo, Japan</td>
			<td>VZMTM300i</td>
			<td></td>
		</tr>
		<tr height="36">
			<td height="36" style="height:36px;width:289px;">Spectralon white standard with 99% diffuse reflectance</td>
			<td>Labsphere Incorporated, North Sutton, NH, USA</td>
			<td>SRS-99-020</td>
			<td></td>
		</tr>
	</tbody>
</table>

simultaneous evaluation of cerebral hemodynamics and light scattering properties of the in vivo rat brain using multispectral diffuse reflectance imaging

The simultaneous evaluation of cerebral hemodynamics and the light scattering properties of in vivo rat brain tissue is demonstrated using a conventional multispectral diffuse reflectance imaging system. This system is constructed from a broadband white light source, a motorized filter wheel with a set of narrowband interference filters, a light guide, a collecting lens, a video zoom lens, and a monochromatic charged-coupled device (CCD) camera. An ellipsoidal cranial window is made in the skull bone of a rat under isoflurane anesthesia to capture in vivo multispectral diffuse reflectance images of the cortical surface. Regulation of the fraction of inspired oxygen using a gas mixture device enables the induction of different respiratory states such as normoxia, hyperoxia, and anoxia. A Monte Carlo simulation-based multiple regression analysis for the measured multispectral diffuse reflectance images at nine wavelengths (500, 520, 540, 560, 570, 580, 600, 730, and 760 nm) is then performed to visualize the two-dimensional maps of hemodynamics and the light scattering properties of the in vivo rat brain.

생체 래트 뇌로부터 취득한 확산 반사율의 대표적인 분광 화상 500, 520, 540, 560, 570에서도 3 이미지 표시되었으며 580 명확 대뇌 피질에서 혈관의 밀도 네트워크 시각화 nm의. 혈관 (600), (730)에서 이미지에 주변 조직 관찰, 및 760 nm의 사이의 콘트라스트의 저하는 이상과 NIR 파장의 광에 의한 헤모글로빈의 낮은 흡수를 반영한다. <p class="jove_content" fo:keep-to...

Watch this Scientific Journal Video about Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging at J

Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging

뇌 혈류 역학 및 생체 내 쥐의 뇌 조직의 산란 특성의 동시 평가는 종래의 멀티 스펙트럼 확산 반사율 촬상 시스템을 이용하여 설명된다.

대뇌 혈류와의 광 산란 특성을 동시에 평가<em&gt; 생체</em&gt; 다중 스펙트럼 확산 반사 이미징을 이용한 쥐 뇌

The simultaneous evaluation of cerebral hemodynamics and the light scattering properties of in vivo rat brain tissue is demonstrated using a conventional ...

Research

JoVE Journal

Neuroscience

Simultaneous Evaluation of Cerebral Hemodynamics and Light Scattering Properties of the In Vivo Rat Brain Using Multispectral Diffuse Reflectance Imaging

Focal Cerebral Ischemia Model by Endovascular Suture Occlusion of the Middle Cerebral Artery in the Rat

쥐 중간 대뇌 동맥의 폐색의 Endovascular 봉합사에 의해 초점 대뇌 국소 빈혈 모델

Stroke is the leading cause of disability and the third leading cause of death in adults worldwide1. In human stroke, there exists a highly variable ...

연구

신경과학

Functional Neuroimaging Using Ultrasonic Blood-brain Barrier Disruption and Manganese-enhanced MRI

초음파 혈액 - 뇌 장벽 파괴 및 망간 향상된 MRI를 사용하여 기능성 Neuroimaging

Although mice are the dominant model system for studying the genetic and molecular underpinnings of neuroscience, functional neuroimaging in mice remains ...

Functional Imaging of Auditory Cortex in Adult Cats using High-field fMRI

하이 필드의 fMRI를 사용하여 성인 고양이의 청각 피질의 기능적 이미징

Current knowledge of sensory processing in the mammalian auditory system is mainly derived from electrophysiological studies in a variety of animal ...

Deep Brain Stimulation with Simultaneous fMRI in Rodents

설치류에 동시 fMRI를 깊은 뇌 자극

In order to visualize the global and downstream neuronal responses to deep brain stimulation (DBS) at various targets, we have developed a protocol for ...

Simultaneous ex vivo Functional Testing of Two Retinas by in vivo Electroretinogram System

Simultaneous ex vivo Functional Testing of Two Retinas by in vivo Electroretinogram System

동시<em&gt; 생체</em두 망막의&gt; 기능 테스트로<em&gt; 생체</em&gt; 전위도 시스템

An In vivo electroretinogram (ERG) signal is composed of several overlapping components originating from different retinal cell types, as well as noise ...

Simultaneous Two-photon In Vivo Imaging of Synaptic Inputs and Postsynaptic Targets in the Mouse Retrosplenial Cortex

Simultaneous Two-photon In Vivo Imaging of Synaptic Inputs and Postsynaptic Targets in the Mouse Retrosplenial Cortex

동시에 두 광자<em&gt; 생체</em&gt; 마우스 Retrosplenial 코어 텍스에서 시냅틱 입력의 이미징 및 시냅스 대상

This video shows the craniotomy procedure that allows chronic imaging of neurons in the mouse retrosplenial cortex (RSC) using in vivo two-photon ...

Evaluation of Bioenergetic Function in Cerebral Vascular Endothelial Cells

대뇌 혈관 내피 세포의 생체 에너지 기능의 평가

The integrity of the blood-brain-barrier (BBB) is critical to prevent brain injury. Cerebral vascular endothelial (CVE) cells are one of the cell types ...

Live Imaging of Primary Cerebral Cortex Cells Using a 2D Culture System

2D 문화 시스템을 사용 하 여 기본 대뇌 피 질 세포의 영상 라이브

During cerebral cortex development, progenitor cells undergo several rounds of symmetric and asymmetric cell divisions to generate new progenitors or ...

Diffuse Reflectance Spectroscopy: Getting the Capillary Refill Test Under One's Thumb

확산 반사율 분광학: 점점 하나의 엄지손가락 아래 모 세관 보충물 테스트

The capillary refill test was introduced in 1947 to help estimate circulatory status in critically ill patients. Guidelines commonly state that refill ...

Intra-Arterial Delivery of Neural Stem Cells to the Rat and Mouse Brain: Application to Cerebral Ischemia

쥐와 마우스 두뇌에 신경 줄기 세포의 동맥 내 납품: 대뇌 허혈에 응용 프로그램

Neural stem cell (NSC) therapy is an emerging innovative treatment for stroke, traumatic brain injury and neurodegenerative disorders. As compared to ...