Name: a sectioning, coring, and image processing guide for high-throughput cortical bone sample procurement and analysis for synchrotron micro-ct
Uploaded: 2020-06-12T14:00:00.000+00:00
Duration: 7 min 10 s
Description: Watch this Scientific Journal Video about A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT at JoVE.com

この論文に記載されている研究は、カナダイノベーション自然科学工学研究評議会、サスカチュワン大学、サスカチュワン州政府、カナダ西部経済多様化カナダ、カナダ国立研究評議会、カナダ保健研究所の支援を受けたカナダ光源のBMIT施設で行われました。著者らは、カナダ光源、特にアダム・ウェッブ、デニス・ミラー、セルゲイ・ガシロフ、寧ズーのビームライン科学者に、SkyScan SRμCTと白いビーム顕微鏡システムのセットアップとトラブルシューティングに協力してくれたことに感謝したいと考えています。また、トレド医科生命科学大学のベス・ダルツェルと、オハイオ州北東部医科大学のジェフリー・ウェンストルップ博士に感謝したいと考えています。JMアンドロノフスキは、アクロン大学と国立司法科学法医学研究所が提供するスタートアップ研究資金(2018-DU-BX-0188)を通じて支援されています。RAデイビスは、アクロン大学が提供する大学院助手によってサポートされています。採点および鋸で使用される装置および供給は、アクロン大学とNSFが、CW HolyokeにEAR-1624242を交付するスタートアップ資金によって購入された。

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著者らは開示するものは何もない。

限られたFOVセットアップで高解像度のSRμCTイメージング用の均一および円筒形皮質骨コアサンプルを調達するための包括的で標準化されたプロトコルはありませんでした。ここで詳述するプロトコルは、SRμCTイメージングのための一貫したサイズの皮質骨コアサンプルを調達する方法と、その後のマイクロアーキテクチャデータの正確な可視化と抽出に関する包括的なチュートリアルを提供?...

近年のイメージング技術の進歩により、非常に高い解像度でX線イメージングデータを取得することが可能になりました。デスクトップマイクロCT(μCT)システムは、非破壊性の性質に起因する、消光骨を撮像するための現在の標準である1.しかし、皮質骨の微細構造特徴をイメージングする場合、μCTの使用はより限定的であった。解像度の制約により、デスクトップシステムは、骨細胞ラクナエのような皮質毛穴よりも小さい微細構造特徴を画像化するために必要な解像度を達成できません。このアプリケーションでは、SRμCTは、これらのシステムの解像度が高いため理想的です1.例えば、バイオメディカルイメージングおよび治療(BMIT)ビームライン2のカナダ光源(CLS)での実験では、ボクセルが0.9μmの小さな画像を生成しています。これまでの研究1、3、4、5は、この解像度を使用して、人間の長い骨(図1)からの皮質骨標本から投影とその後の3次元(3D)レンダリングを取得し、骨細胞ラクナー密度4、6、7、8、9およびヒトの寿命と男女間のラクナ形状とサイズ3の変動を定量化した。 さらなる研究は、ヒト10における骨バンディングの存在を実証しており、法医学人類学的文献において非ヒト哺乳類のみに関連付けられていると以前に認識されていた現象である。
例外的な解像度を達成するためには、X線ビームは、多くの場合、直径数ミリメートルに最大標本サイズを制限する視野(FOV)内に細かく焦点を合わせる必要があります。現在、これらの制限を満たす骨サンプル調達を概説する文献に記載されている包括的で標準化された手順はありません。FOV内のセンタリング標本は、1)イメージング中に180°回転する際にサンプルの中心を維持し、2)スキャンアーティファクトが画像切り捨てがないため制限されていることを確認するために重要です。つまり、FOVの外側のサンプルの部分は、FOV内の焦点に入るビームを妨げない。この場合、再構築アルゴリズムは完全に正しい再構築に必要な減衰データの一部を奪われます。360°(フル回転)スキャンはビーム硬化の影響を最小限に抑えますが、イメージング中の不整列やサンプルの動きによって引き起こされるアーティファクトを増加させることは注目に値します。したがって、360°スキャンは通常よりクリーンなデータを生成しますが、イメージング時間は2倍になり、実験コストとデータ品質の妥協に対処する必要があります。
骨イメージング実験の重要で見過ごされがちな側面は、スキャン前に行われる正確で複製可能な検体調製技術です。SRμCT法を実験に組み込んだ研究では、サンプリングプロトコルについて簡単に言及しているが、著者らは標本を収集するために使用される特定の方法論についてほとんどまたは全く詳細を提供していない。このような研究の多くは、任意の次元の直線的な骨ブロックを切断することを言及しているが、一般的に使用されるツールや埋め込み材料に関するそれ以上の情報を提供しない3,4,10, 11,12,13,14.一部の研究者は、一般的に、関心領域から骨の直線ブロックを除去するためにハンドヘルドロータリーツール(例えば、Dremel)を使用しています (ROI)3,4,10,11,12,13,14.この方法では、FOV より大きいサイズの不均等なサンプルが得られ、スキャンアーティファクトや画像切り捨ての可能性が高くなります。このような標本は、多くの場合、精密ダイヤモンドウェハソー(例えば、ビューラー異性体)を使用して、さらなる精製を必要とする。(200/mmまで)一貫した次元でサンプルを調達することは、取得したデータセットが最高品質で、その後の結果が複製可能であることを保証するために重要です。
サンプル調達方法論の限定的な報告は、以前の調査で実行された方法を採用および検証しようとする際に、困難の余分な層を追加します。現在、研究者は、サンプリング手順の詳細については、著者に直接連絡する必要があります。ここで詳述するプロトコルは、生物医学研究者に、徹底的に文書化され、複製可能で、コスト効率の高いサンプリング技術を提供します。この記事の主な目的は、マイクロアーキテクチャデータの正確な可視化と抽出のためにミルドリルプレスとダイヤモンドのスコアリングビットを使用して、一貫したサイズの皮質骨コアサンプルを調達する方法に関する包括的なチュートリアルを提供することです。この方法は、高圧岩力学15、16、17、18、19の硬質材料のブロックから均一な、小径(1-5ミリメートル)のシリンダーを日常的に収集するために使用される手順から変更されます。

<table><tbody><tr><td>1-1/8&quot; plunge cutting carbide for composites</td><td>Warrior</td><td>61812</td><td>28.6mm plunge</td></tr><tr><td>70% Ethanol</td><td>Fisher Scientific</td><td>BP8201500</td><td>3.8 Liters</td></tr><tr><td>Blunt-tipped forceps</td><td>Fisher Scientific</td><td>10-300</td><td></td></tr><tr><td>Centrifuge tubes</td><td>ThermoFisher</td><td>55398</td><td></td></tr><tr><td>Crystalbond 509-3 Epoxy</td><td>Ted Pella</td><td>821-3</td><td></td></tr><tr><td>CTAnalyser</td><td>Bruker microCT</td><td>v.1.15.4.0</td><td>Download and install at https://www.bruker.com/products/microtomography/micro-ct-software/3dsuite.html</td></tr><tr><td>Dental Tool Kit</td><td>Amazon</td><td>787269885110</td><td></td></tr><tr><td>Diamond wafering saw blade for composite material</td><td>Buehler</td><td>#11-4247</td><td></td></tr><tr><td>Drill Press</td><td>Jet Mill/Drill</td><td>350017</td><td>Model: JMD-15, benchtop drill presses are suitable substites, but typically lack a translatable machine table for positioning samples beneath the drill stem</td></tr><tr><td>Fine-tipped forceps</td><td>Fisher Scientific</td><td>22-327379</td><td></td></tr><tr><td>Fixturing clamps for XY machine table for mill/drill</td><td>MSC Industrial Supply</td><td>#04804571</td><td></td></tr><tr><td>Glass microscope slides</td><td>Ted Pella</td><td>26005</td><td>75x50mm slides, 1mm thick</td></tr><tr><td>Glass slide chuck</td><td>Buehler</td><td>#112488</td><td>Large enough to hold 75x50mm glass slides</td></tr><tr><td>Hot plate capable of reaching 140 &amp;deg;C</td><td>ThermoScientific</td><td>HP88850105</td><td></td></tr><tr><td>Incubator</td><td>NAPCO</td><td>Model 4200</td><td></td></tr><tr><td>Isocut Fluid</td><td>Buehler</td><td>111193032</td><td>Lubricant; 30mL</td></tr><tr><td>Jeweler&#039;s diamond coring drill bit</td><td>Otto Frei</td><td>#119.050</td><td>2mm inner diameter hollow stem coring bit</td></tr><tr><td>NRecon</td><td>Bruker microCT</td><td>v.1.6.10.2</td><td>Download and install at https://www.bruker.com/products/microtomography.html</td></tr><tr><td>Oscillating saw</td><td>Harbor Freight</td><td>62866</td><td></td></tr><tr><td>Oven-safe glass dishes</td><td>Pyrex</td><td>1117715</td><td>Glass food storage container</td></tr><tr><td>Precision slow-speed saw (Isomet 1000)</td><td>Buehler</td><td>111280160</td><td></td></tr><tr><td>Razor blades</td><td>Amazon</td><td>25181</td><td></td></tr><tr><td>Shallow aluminum tins</td><td>Amazon</td><td>B01MRWLD0R</td><td>~8cm diameter</td></tr><tr><td>Specimen cups</td><td>Amazon</td><td>616784425436 885334344729</td><td></td></tr><tr><td>Tergazyme detergent</td><td>Alconox</td><td>1304-1</td><td>1.8kg box</td></tr><tr><td>Ultrasonic cleaner</td><td>MTI Corporation</td><td>KJ201508006</td><td></td></tr></tbody></table>

a sectioning, coring, and image processing guide for high-throughput cortical bone sample procurement and analysis for synchrotron micro-ct

骨は、人間の寿命にわたって構造を変化させる動的で機械的に活性な組織です。骨のリモデリングプロセスの産物は、従来の二次元技術を用いて実質的に研究されてきた。デスクトップマイクロコンピュータ断層撮影(μCT)およびシンクロトロン放射微小断層撮影(SRμCT)によるX線イメージング技術の最近の進歩により、他の3Dイメージング技術(例えば、SEM)よりも大きな視野(FOV)の高解像度3次元(3D)スキャンを取得することができました。ただし、データ分析に影響を与えるストリークアーティファクトの外観を制限するために、標本はFOV内で正確に中心に配置する必要があります。これまでの研究では、不規則な形状の直線的な骨ブロックの調達が報告され、エッジの不均一や画像切り捨てによるイメージングアーティファクトが発生しています。ヒトの女性の前側面からSRμCT実験用に一貫して大きさの皮質骨コア標本を調達するために、地質サンプリングプロトコル(スコア)を適用しました。このスコアリング方法は、効率的で、組織に対して最小限の破壊です。回転中に等角体であること、および走査中のX線ビームに均一なパス長を提供する性質によって、イメージングアーティファクトを減少させる均一な円筒形サンプルを作成します。X線の断層データの成形および不規則な形状のサンプルの画像処理は、皮質骨マイクロアーキテクチャの可視化と分析を改善する技術の可能性を確認する。このプロトコルの目標は、さまざまなタイプの高解像度骨イメージング実験に適応可能な皮質骨コアの抽出のための信頼性と再現性のある方法を提供することです。この作業の包括的な目標は、手頃な価格で一貫性があり、簡単なSRμCTの標準化された皮質骨調達を作成することです。この手順は、生物人類学、地球科学、材料科学などの硬質複合材料を一般的に評価する関連分野の研究者によってさらに適応され得る。

コアサンプリングの記載された方法は、非常に効果的かつ効率的であることが判明しました。このプロトコルを使用した試料の採点は、1.49 μmボクセルサイズで約2mmのFOVを有するCLS BMIT-BMビームライン2での実験用に、一貫してサイズのサンプルを>300の調達に可能にした。コア直径の一貫性を検証するために、人間の前大腿心のサブセットの長さ(上、中央、下)に沿って3つの?...

Watch this Scientific Journal Video about A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT at JoVE.com

A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT

ヒトの女性の前部からSRμCT実験用に均一な大きさの皮質骨標本を調達するために、地質学的(スコア)サンプリングプロトコルを用いた。この方法は、最小限の破壊的で効率的な結果、不規則なサンプル形状からのイメージングアーティファクトを最小限に抑え、マイクロアーキテクチャの可視化と分析を改善する円筒形の標本を生み出します。

高スループットコルティカル骨サンプルの採取と分析のための断面化、スコアリング、画像処理ガイド

Bone is a dynamic and mechanically active tissue that changes in structure over the human lifespan. The products of the bone remodeling process have been ...

a-sectioning-coring-image-processing-guide-for-high-throughput

Research

JoVE Journal

Biology

5.0K ビュー.  The University of Akron. ヒトの女性の前部からSRμCT実験用に均一な大きさの皮質骨標本を調達するために、地質学的(スコア)サンプリングプロトコルを用いた。この方法は、最小限の破壊的で効率的な結果、不規則なサンプル形状からのイメージングアーティファクトを最小限に抑え、マイクロアーキテクチャの可視化と分析を改善する円筒形の標本を生み出します。

ビデオ: A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT

High Resolution 3D Imaging of Ex-Vivo Biological Samples by Micro CT

Non-destructive volume visualization can be achieved only by tomographic techniques, of which the most efficient is the x-ray micro computerized tomography (&mu;CT).
High resolution &mu;CT is a very versatile yet accurate (1-2 microns of resolution) technique for 3D examination of ex-vivo biological samples1, 2. As opposed to electron tomography, the &mu;CT allows the examination of up to 4 cm thick samples. This technique requires only few hours of measurement as compared to weeks in histology. In addition, &mu;CT does not rely on 2D stereologic models, thus it may complement and in some cases can even replace histological methods3, 4, which are both time consuming and destructive. Sample conditioning and positioning in &mu;CT is straightforward and does not require high vacuum or low temperatures, which may adversely affect the structure. The sample is positioned and rotated 180&deg; or 360&deg;between a microfocused x-ray source and a detector, which includes a scintillator and an accurate CCD camera, For each angle a 2D image is taken, and then the entire volume is reconstructed using one of the different available algorithms5-7. The 3D resolution increases with the decrease of the rotation step. The present video protocol shows the main steps in preparation, immobilization and positioning of the sample followed by imaging at high resolution.

High Resolution 3D Imaging of Ex-Vivo Biological Samples by Micro CT

Non-destructive volume visualization can be achieved only by tomographic techniques, of which the most efficient is the x-ray micro computerized tomography ( CT).

の高分解能3次元イメージング生体外</emマイクロCTによる>生物試料

Non-destructive volume visualization can be achieved only by tomographic techniques, of which the most efficient is the x-ray micro computerized ...

生物工学

Automated Quantification of Hematopoietic Cell &#8211; Stromal Cell Interactions in Histological Images of Undecalcified Bone

Confocal microscopy is the method of choice for the analysis of localization of multiple cell types within complex tissues such as the bone marrow. However, the analysis and quantification of cellular localization is difficult, as in many cases it relies on manual counting, thus bearing the risk of introducing a rater-dependent bias and reducing interrater reliability. Moreover, it is often difficult to judge whether the co-localization between two cells results from random positioning, especially when cell types differ strongly in the frequency of their occurrence. Here, a method for unbiased quantification of cellular co-localization in the bone marrow is introduced. The protocol describes the sample preparation used to obtain histological sections of whole murine long bones including the bone marrow, as well as the staining protocol and the acquisition of high-resolution images. An analysis workflow spanning from the recognition of hematopoietic and non-hematopoietic cell types in 2-dimensional (2D) bone marrow images to the quantification of the direct contacts between those cells is presented. This also includes a neighborhood analysis, to obtain information about the cellular microenvironment surrounding a certain cell type. In order to evaluate whether co-localization of two cell types is the mere result of random cell positioning or reflects preferential associations between the cells, a simulation tool which is suitable for testing this hypothesis in the case of hematopoietic as well as stromal cells, is used. This approach is not limited to the bone marrow, and can be extended to other tissues to permit reproducible, quantitative analysis of histological data.

A strategy to quantitatively analyze histological data in the bone marrow is presented. Confocal microscopy of fluorescently labeled cells in tissue sections results in 2-dimensional images, which are automatically analyzed. Co-localization analyses of different cell types are compared to data from simulated images, giving quantitative information about cellular interactions.

造血細胞の自動定量化 - 脱灰骨の組織学的画像における間質細胞の相互作用

Confocal microscopy is the method of choice for the analysis of localization of multiple cell types within complex tissues such as the bone marrow. ...

発生生物学

Outer-Boundary Assisted Segmentation and Quantification of Trabecular Bones by an Imagej Plugin

Micro-computed tomography (micro-CT) is routinely used to assess bone quantity and trabecular microstructural properties in small animals under different bone loss conditions. However, the standard approach for trabecular analysis of micro-CT images is slice-by-slice semi-automatic hand-contouring, which is labor intensive and error prone. Described here is an efficient method for automatic segmentation of trabecular bones according to the bone's outer boundaries, where trabecular bones can be identified and segmented automatically with accuracy with less operator bias when appropriate segmentation parameters are set. To profile satisfactory segmentation parameters, an image stack of segmentation results is displayed, where all possible combinations of the segmentation parameters are changed one by one in sequence, and segmentation results with associated parameters can easily be visually checked. As a quality-control feature of the plugin, simulated standard objects are quantified where the measured quantities can be compared with theoretical values. Layer-by-layer quantification of trabecular properties and trabecular thicknesses are reported by such a plugin, and the distributions of such properties within the selected regions can be profiled easily. Although layer-by-layer quantification retains more information about trabecular bones and facilitates further statistical analysis of structural changes, such measures are unavailable from the output of current commercial software, where only a single quantified value for each parameter is reported for each sample. Therefore, the described workflows are better approaches for analyzing trabecular bones with accuracy and efficiency.

We present a workflow for segmenting and quantifying trabecular bones for 2D and 3D images based on the bone&#39;s outer boundary using an ImageJ plugin. This approach is more efficient and accurate than the current manual hand-contouring approach, and provides layer-by-layer quantifications, which are not available in current commercial software.

外側境界セグメンテーションと Imagej のプラグインで海綿骨の定量化を支援

Micro-computed tomography (micro-CT) is routinely used to assess bone quantity and trabecular microstructural properties in small animals under different ...

3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography

We demonstrate a laboratory-based method combining X-ray microCT and nanoCT with a specific X-ray stain, which targets the cell cytoplasm. The described protocol is easy to apply, fast and suitable for larger soft-tissue samples. The presented methodology enables the characterization of crucial tissue structures in three dimensions and is demonstrated on a whole mouse kidney. The multiscale approach allows to image the entire mouse kidney and supports the selection of further volumes of interest, which are acquired with higher resolutions ranging into the nanometer range. Thereby, soft-tissue morphology with a similar detail level as the corresponding histological light microscopy images is reproduced. Deeper insights into the 3D configuration of tissue structures are achieved without impeding further investigations through histological methods.

A protocol for 3D visualization of microscopic tissue structures by using an X-ray specific staining method designed for X-ray computed tomography is presented.

X線特異的染色法とナノスコピックコンピュータ断層撮影法を用いた軟組織試料の3次元イメージング

We demonstrate a laboratory-based method combining X-ray microCT and nanoCT with a specific X-ray stain, which targets the cell cytoplasm. The described ...

A Micro-CT-based Method for Characterizing Lesions and Locating Electrodes in Small Animal Brains

Lesion and electrode location verification are traditionally done via histological examination of stained brain slices, a time-consuming procedure that requires manual estimation. Here, we describe a simple, straightforward method for quantifying lesions and locating electrodes in the brain that is less laborious and yields more detailed results. Whole brains are stained with osmium tetroxide, embedded in resin, and imaged with a micro-CT scanner. The scans result in 3D digital volumes of the brains with resolutions and virtual section thicknesses dependent on the sample size (12&#8211;15 and 5&#8211;6 &#181;m&#160;per voxel for rat and zebra finch brains, respectively). Surface and deep lesions can be characterized, and single tetrodes, tetrode arrays, electrolytic lesions, and silicon probes can also be localized. Free and proprietary software allows experimenters to examine the sample volume from any plane and segment the volume manually or automatically. Because this method generates whole brain volume, lesions and electrodes can be quantified to a much higher degree than in current methods, which will help standardize comparisons within and across studies.

This article describes a straightforward method to prepare small animal brains for micro-CT imaging, in which lesions can be quantified and electrodes located with high precision in the context of the whole brain.

マイクロ ct 画像に基づく法病変を特徴と、小動物の脳に電極を配置

Lesion and electrode location verification are traditionally done via histological examination of stained brain slices, a time-consuming procedure that ...

神経科学

An Unbiased Approach of Sampling TEM Sections in Neuroscience

Investigations of the ultrastructural features of neurons and their synapses are only possible with electron microscopy. Especially for comparative studies of the changes in densities and distributions of such features, an unbiased sampling protocol is vital for reliable results. Here, we present a workflow for the image acquisition of brain samples. The workflow allows systematic uniform random sampling within a defined brain region, and the images can be analyzed using a disector. This technique is much faster than extensive examination of serial sections but still presents a feasible approach to estimate the densities and distributions of ultrastructure features. Before embedding, stained vibratome sections were used as a reference to identify the brain region under investigation, which helped speed up the overall specimen preparation process. This approach was used for comparative studies investigating the effect of an enriched-housing environment on several ultrastructural parameters in the mouse brain. Based on the successful use of the workflow, we adapted it for the purpose of elemental analysis of brain samples. We optimized the protocol in terms of the time of user-interaction. Automating all the time-consuming steps by compiling a script for the open source software SerialEM helps the user to focus on the main work of acquiring the elemental maps. As in the original workflow, we paid attention to the unbiased sampling approach to guarantee reliable results.

We introduce a novel workflow for electron microscopy investigations of brain tissue. The method allows the user to examine neuronal features in an unbiased fashion. For elemental analysis, we also present a script that automatizes most of the workflow for randomized sampling.

神経科学の TEM セクションをサンプリングの公平なアプローチ

Investigations of the ultrastructural features of neurons and their synapses are only possible with electron microscopy. Especially for comparative ...

骨折感受性のための機械的試験の原理とプロトコル

Practical Considerations for the Design, Execution, and Interpretation of Studies Involving Whole-Bone Bending Tests of Rodent Bones

Skeletal fragility leading to fracture is an American public health crisis resulting in 1.5 million fractures each year and $18 billion in direct care costs. The ability to understand the mechanisms underlying bone disease and the response to treatment is not only desired, but critical. Mechanical testing of bone serves as a valuable technique for understanding and quantifying a bone&#39;s susceptibility to fracture. While this method appears simple to perform, inappropriate and inaccurate conclusions may be reached if governing assumptions and key steps are disregarded by the user. This has been observed across disciplines as studies continue to be published with misuse of methods and incorrect interpretation of results. This protocol will serve as a primer for the principles associated with mechanical testing along with the application of these techniques-from considerations of sample size through tissue harvesting and storage, to data analysis and interpretation. With this in hand, valuable information regarding a bone&#39;s susceptibility to fracture may be obtained, furthering understanding for both academic research and clinical solutions.

著者スポットライト:全骨曲げ試験における精度と再現性の向上 

Mechanical testing of rodent bones is a valuable method for extracting information regarding a bone's susceptibility to fracture. Lacking proper practical understanding, the results may be overinterpreted or lack validity. This protocol will serve as a guide to ensure mechanical tests are performed accurately to provide valid and functional data.

げっ歯類の骨の全骨曲げ試験を含む研究の設計、実施、および解釈に関する実践的な考慮事項

Skeletal fragility leading to fracture is an American public health crisis resulting in 1.5 million fractures each year and $18 billion in direct care ...

マウス新生児脳マイクロCTスキャンと画像処理

Micro-CT Imaging and Morphometric Analysis of Mouse Neonatal Brains

Neuroimages are a valuable tool for studying brain morphology in experiments using animal models. Magnetic resonance imaging (MRI) has become the standard method for soft tissues, although its low spatial resolution poses some limits for small animals. Here, we describe a protocol for obtaining high-resolution three-dimensional (3D) information on mouse neonate brains and skulls using micro-computed tomography (micro-CT). The protocol includes those steps needed to dissect the samples, stain and scan the brain, and obtain morphometric measurements of the whole organ and regions of interest (ROIs). Image analysis includes the segmentation of structures and the digitization of point coordinates. In sum, this work shows that the combination of micro-CT and Lugol's solution as a contrast agent is a suitable alternative for imaging the perinatal brains of small animals. This imaging workflow has applications in developmental biology, biomedicine, and other sciences interested in assessing the effect of diverse genetic and environmental factors on brain development.

著者スポットライト:マウス新生児の脳の高解像度イメージング – ルゴール溶液造影剤によるマイクロCTプロトコル

This study describes the steps for obtaining high-resolution images of neonatal mouse brains by combining micro-computed tomography (micro-CT) and a contrast agent in ex vivo samples. We describe basic morphometric analyses to quantify brain size and shape in these images.

マウス新生児脳のマイクロCTイメージングと形態解析

Neuroimages are a valuable tool for studying brain morphology in experiments using animal models. Magnetic resonance imaging (MRI) has become the standard ...

高スループットコルティカル骨サンプルの採取と分析のための断面化、スコアリング、画像処理ガイド

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の高分解能3次元イメージング生体外生物試料

造血細胞の自動定量化 - 脱灰骨の組織学的画像における間質細胞の相互作用

外側境界セグメンテーションと Imagej のプラグインで海綿骨の定量化を支援

X線特異的染色法とナノスコピックコンピュータ断層撮影法を用いた軟組織試料の3次元イメージング

マイクロ ct 画像に基づく法病変を特徴と、小動物の脳に電極を配置

神経科学の TEM セクションをサンプリングの公平なアプローチ

げっ歯類の骨の全骨曲げ試験を含む研究の設計、実施、および解釈に関する実践的な考慮事項

げっ歯類の骨の全骨曲げ試験を含む研究の設計、実施、および解釈に関する実践的な考慮事項

げっ歯類の骨の全骨曲げ試験を含む研究の設計、実施、および解釈に関する実践的な考慮事項

マウス新生児脳のマイクロCTイメージングと形態解析