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関連する概念動画

Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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...

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関連する実験動画

Updated: Jul 27, 2026

Multi-modal Imaging of Angiogenesis in a Nude Rat Model of Breast Cancer Bone Metastasis Using Magnetic Resonance Imaging, Volumetric Computed Tomography and Ultrasound
12:23

Multi-modal Imaging of Angiogenesis in a Nude Rat Model of Breast Cancer Bone Metastasis Using Magnetic Resonance Imaging, Volumetric Computed Tomography and Ultrasound

Published on: August 14, 2012

骨転移のスクリーニング. 必要なのはスキャンだけですか?

I R McDougall, J P Kriss

    JAMA
    |January 6, 1975
    PubMed
    まとめ

    テクネチウム99mラベル付ディフォスフォナート骨格シンチグラフィは,癌転移を検出するために,レントゲノグラムよりも敏感です. スキャンは,より悪性病変を特定し,がんのステージ決定における偽陰性率を大幅に削減しました.

    科学分野:

    • 核医学は,核医学である.
    • 腫瘍学 腫瘍学
    • 放射線学 放射線学

    背景:

    • 骨格転移は,原発がんの一般的な合併症である.
    • 骨転移の正確な検出は,がんのステージと治療計画の決定的に重要です.

    研究 の 目的:

    • テクネシウム99mラベル付ディフォスフォナートを用いた全骨格スシンチグラフィの診断精度を,生検で証明された原発がんの患者におけるレントゲン検査と比較する.
    • 骨転移の検出のための両方のイメージング方式の偽陰性率を決定する.

    主な方法:

    • テクネシウム99mラベル付ディフォスフォネートによる全骨格シンチグラフィーは,生検で証明された原発がんの200人の患者に実施されました.
    • 結果は,レントゲノグラフィの発見と生検データと比較した.
    • スキャンとレントゲノグラフィの発見の地域分析が行われました.

    主要な成果:

    • 骨格スシンチグラフィーでは,200人の患者のうち114人の患者に異常が示されました.
    • 57人の患者のX線図は正常であったが,そのうち32人のX線図では悪性病変がスシンチグラフィーで検出され,X線図では17%の偽陰性率が生じた.
    • スキャンは1.6%の偽陰性率を示し,わずか3人の患者が異常なレンツゲノグラムを示したが,正常なスキャンであった.

    さらに関連する動画

    Models of Bone Metastasis
    08:49

    Models of Bone Metastasis

    Published on: September 4, 2012

    Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone
    06:53

    Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone

    Published on: September 9, 2020

    関連する実験動画

    Last Updated: Jul 27, 2026

    Multi-modal Imaging of Angiogenesis in a Nude Rat Model of Breast Cancer Bone Metastasis Using Magnetic Resonance Imaging, Volumetric Computed Tomography and Ultrasound
    12:23

    Multi-modal Imaging of Angiogenesis in a Nude Rat Model of Breast Cancer Bone Metastasis Using Magnetic Resonance Imaging, Volumetric Computed Tomography and Ultrasound

    Published on: August 14, 2012

    Models of Bone Metastasis
    08:49

    Models of Bone Metastasis

    Published on: September 4, 2012

    Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone
    06:53

    Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone

    Published on: September 9, 2020

  • 地域的に見ると,スシンチグラフィでは,腫瘍に起因する,レンツゲノグラムでは見られなかった119の異常が検出されましたが,レンツゲノグラムでは,スキャンと比較して17の説明不可能な偽陰性結果しか示されませんでした.

    • 結論:

    • テクネシウム99mラベル付ディフォスフォネートによる骨格全体スシンチグラフィは,原発がん患者の骨格転移を検出するために,ロントゲノグラフィよりも有意に敏感です.
    • 骨格シンチグラフィは偽陰性率を低くし,がんのステージングと管理の正確性を向上させます.