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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

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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.
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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...
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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...
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Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
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Related Experiment Video

Updated: Feb 18, 2026

Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery
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[Current roentgenologic delay in bronchial carcinoma].

J Wilde, J Wilde, H G Ganguin

    Zeitschrift Fur Erkrankungen Der Atmungsorgane
    |January 1, 1983
    PubMed
    Summary

    Delayed diagnosis in lung cancer, particularly bronchial carcinoma, is common, impacting treatment outcomes. Improving x-ray interpretation and screening intervals can enhance early detection and prognosis for lung cancer patients.

    Area of Science:

    • Oncology
    • Radiology
    • Pulmonology

    Background:

    • Delayed diagnosis of lung cancer, specifically bronchial carcinoma, is a significant issue affecting patient outcomes.
    • Analysis of roentgenogram findings in resectable and unresectable lung cancer cases from 1957 to 1976.

    Purpose of the Study:

    • To analyze the factors contributing to delayed findings in roentgenograms for lung cancer.
    • To identify patterns in diagnostic delays based on tumor characteristics and detection methods.
    • To propose improvements for earlier lung cancer detection and better prognosis.

    Main Methods:

    • Retrospective analysis of 1800 lung cancer cases (1000 resected, 800 unresectable).
    • Evaluation of diagnostic delays using criteria including tumor localization, size, histology, clinical symptoms, discovery method, and radiographic findings.

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  • Comparison of delays between resectable and unresectable cases, and by tumor type and patient demographics.

    • Main Results:

    • A delay in roentgenogram findings was observed in 40% of resectable lung cancer cases.
    • While chest x-rays are effective for lung cancer detection (69% via screening), 45-50% of these cases showed delays over 6 months.
    • Significant delays were noted in peripheral tumors (50% delayed >6 months) and in female patients (74% delayed >6 months).
    • Resection was precluded in 10-15% of cases due to diagnostic delays.
    • Specific tumor histologies, like squamous cell carcinoma and adenocarcinomas, showed longer delays.

    Conclusions:

    • Diagnostic delays in lung cancer are prevalent, impacting the feasibility of curative resection.
    • Enhancing the quality of chest x-ray interpretation and implementing risk-stratified screening intervals are crucial.
    • A standardized diagnostic algorithm for suspicious radiographic findings is recommended to improve lung cancer detection and prognosis.