関連する実験動画
Updated: Jan 24, 2026

06:26
Induction of Cerebral Arterial Gas Embolism in Rat
Published on: October 18, 2024
846
局所動脈圧に基づく塞栓終点の定量的決定
Dongcheng Ren1,2,3, Xingyuan Li1,2,3, Shijie Guo1,2,3
1School of Mechanical Engineering Hebei University of Technology Tianjin China.
Bioengineering & translational medicine
|January 23, 2026
まとめ
本研究では、塞栓終点を決定するために局所動脈圧を用いた新しい定量的手法を導入します。このアプローチは、治療転帰を改善し、血管内治療における塞栓物質の使用量を削減します。
科学分野:
- 血管内治療科、生体医工学、医用物理学
背景:
- 塞栓終点の最適化は、治療の成功と異所性塞栓などの合併症の予防にとって重要です。現在の方法には定量的標準化が欠けており、塞栓物質の過剰使用につながる可能性があります。
研究 の 目的:
- 局所動脈圧を用いた塞栓終点の評価のための定量的方法を開発および検証すること。塞栓物質の使用量を最小限に抑え、塞栓療法の処置転帰を改善すること。
主な方法:
- 末端抵抗血管の多孔質媒体モデルを使用して血行動態の変化をシミュレーションしました。塞栓を再現するためのin vitro実験プラットフォームを開発しました。局所動脈圧に基づいた定量的終点評価方法を確立しました。ブタのin vivo腎動脈塞栓実験により方法を検証しました。
主要な成果:
- 圧力ベースの方法は、シミュレーションで1.65%、in vitroで3.09%のエラーで圧力と流量の変化を正確に予測しました。動物実験では、画像診断との強い相関を示し、塞栓物質を17.86%削減しました。局所動脈圧は、終点評価のための信頼できる定量的基準であることが証明されました。
結論:
- 局所動脈圧は、塞栓終点を決定するための標準化された定量的なアプローチを提供します。この方法は、放射線被ばくの削減と塞栓処置の自動化において大きな臨床的価値があります。これらの発見は、固形腫瘍の塞栓療法における安全性と効率の向上を支持します。
関連する概念動画
Precipitation Titration: Endpoint Detection Methods
5.8K
In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...
In the Volhard method, a standard excess of AgNO3 is first added to the...
5.8K
Assessment of blood pressure in brachial artery(one-step method)
1.1K
This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
Prepare for the Procedure:
1.1K
Assessment of blood pressure in brachial artery(two-step method)
1.5K
Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
1.5K
Pulmonary Embolism I: Introduction
558
Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...
558
Vapor Pressure
40.0K
When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
40.0K
Definition and Measurement of Pressure: Atmospheric Pressure, Barometer, and Manometer
42.7K
Gas pressure is caused by force exerted by gas molecules colliding with the surfaces of objects. Although the force of each collision is very small, any surface of an appreciable area experiences a large number of collisions in a short time, which can result in high pressure.
42.7K

