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関連する概念動画

Computed Tomography01:10

Computed Tomography

7.6K
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

541
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
541
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

671
Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
671
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

973
Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
973
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

495
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
495
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

893
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
893

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関連する実験動画

Updated: May 1, 2026

Retrograde Perfusion and Filling of Mouse Coronary Vasculature as Preparation for Micro Computed Tomography Imaging
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マルチスライスコンピューティングトモグラフィによる非侵襲的冠動脈血管撮影.

Martin H K Hoffmann1, Heshui Shi, Bernd L Schmitz

  • 1Department of Diagnostic Radiology, University Hospital, Ulm, Germany. martin.hoffmann@medizin.uni-ulm.de

JAMA
|May 26, 2005
PubMed
まとめ

マルチスライスコンピューティングトモグラフィー (MSCT) は,閉塞性冠動脈疾患を正確に検出し,侵襲性冠動脈血管撮影と比較して高い感度と特異性を示します. この非侵襲的なイメージング方法は,冠動脈疾患の診断において,通常の臨床使用に希望を示しています.

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Author Spotlight: Advancing Cardiovascular Imaging - Introducing the Spatially Weighted Calcium Score for Early Disease Detection
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Retrograde Perfusion and Filling of Mouse Coronary Vasculature as Preparation for Micro Computed Tomography Imaging
10:16

Retrograde Perfusion and Filling of Mouse Coronary Vasculature as Preparation for Micro Computed Tomography Imaging

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Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
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Author Spotlight: Advancing Cardiovascular Imaging - Introducing the Spatially Weighted Calcium Score for Early Disease Detection
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科学分野:

  • 心血管画像検査 (CVDI) について
  • 放射線学 放射線学
  • 医療診断 医療診断

背景:

  • マルチスライスコンピューティングトモグラフィー (MSCT) は,冠動脈の非侵襲的なイメージングテクニックの新興です.
  • 閉塞性冠動脈疾患の正確な検出は,患者の管理に不可欠です.

研究 の 目的:

  • 閉塞性冠動脈疾患の検出におけるMSCTの正確性と信頼性を評価する.
  • 侵襲性冠動脈血管撮影に対するMSCTの診断性能を比較するには,現在の黄金基準である.

主な方法:

  • MSCTと侵襲性冠動脈血管撮影の両方を受けた103人の患者を対象とした前向きな単一センター研究.
  • 分析には,2つのイメージング方式の患者ベース,セグメントベース,および容器ベースの比較が含まれていました.
  • 画像の質は評価され,非診断性MSCTセグメントは主に高い心拍数に起因しました.

主要な成果:

  • MSCTは,重度の冠動脈病変 (>50%の狭窄) を検出するための95%のセグメントベースの感度と98%の特異性で,高い精度を示しました.
  • 定量分析は,MSCTと侵襲性血管撮影の間の良好な相関 (r=0.87) を示したが,MSCTは狭窄率を過大評価する傾向があった.
  • 患者ベースの分析では,リシーバーの動作特性曲線の下の面積が0.97であることが示され,リバスカライゼーションを必要とする患者を特定するための強力な差別力を示した.

結論:

  • MSCTは,阻塞性冠動脈疾患の疑いを検出するための非常に正確な非侵襲的なツールです.
  • この技術は,標準的な臨床実務における侵襲性冠動脈血管学を補完する可能性を秘めています.
  • MSCTは,非侵襲的な冠動脈評価のための有望な代替案を提供します.