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Radiological Investigation I: X-ray and CT

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...

X-ray Imaging

X-ray Imaging

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...

Imaging Studies for Cardiovascular System III: X-Ray

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The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
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Radiological Investigation III: Pulmonary Angiogram and PET Scan

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Ultrasonography

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During an ultrasonography procedure, a handheld device called...

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Related Experiment Video

Updated: May 1, 2026

Point-of-Care Lung Ultrasound in Adults: Image Acquisition

Point-of-Care Lung Ultrasound in Adults: Image Acquisition

Published on: March 3, 2023

An endless line on the chest radiograph.

Allan Lee¹, Kenneth Lau, Stephen Stuckey

¹Department of Diagnostic Imaging, Monash Health, Clayton, Victoria, Australia.

BMJ Case Reports

|April 12, 2014

Summary

A retained central venous guidewire, initially missed on imaging, was discovered postmortem. This case highlights the critical importance of thorough radiograph interpretation to prevent retained medical devices.

Area of Science:

Medical Imaging
Interventional Cardiology
Patient Safety

Background:

Central venous catheterization is a common procedure.
Polypharmacy overdose led to femoral vein catheterization in a 40-year-old male.
The procedure was initially deemed successful and uncomplicated.

Observation:

A postprocedural chest radiograph revealed a linear metallic opacity over the superior vena cava (SVC) and inferior vena cava (IVC).
The opacity's ends were not visualized, leading to misinterpretation as an external object.
The central line was removed, but the guidewire remained retained within the vasculature.

Findings:

A postmortem examination identified a retained central venous guidewire extending from the IVC, through the right atrium, and into the SVC.

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The initial radiograph interpretation failed to detect the retained guidewire, indicating a potential diagnostic oversight.

Implications:

This case underscores the critical need for meticulous review of postprocedural imaging to identify retained foreign objects.
Missed retained guidewires can lead to delayed diagnosis and potential complications, emphasizing the importance of comprehensive patient safety protocols.
Improved vigilance in interpreting medical imaging is crucial for preventing retained medical devices and ensuring patient well-being.