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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 the...

Imaging Studies III: Computed Tomography

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...

Computed Tomography

Computed Tomography

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...

Imaging Studies I: CT and MRI

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...

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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...

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 X-rays, and by 1900, X-ray was widely...

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Updated: Jun 16, 2026

Safety Precautions and Operating Procedures in an (A)BSL-4 Laboratory: 4. Medical Imaging Procedures

Safety Precautions and Operating Procedures in an (A)BSL-4 Laboratory: 4. Medical Imaging Procedures

Published on: October 3, 2016

Radiation safety in abdominal computed tomography.

Virginia Tsapaki¹, Madan Rehani, Sanjay Saini

¹Konstantopoulio Hospital, Athens, Greece. virginia@otenet.gr

Seminars in Ultrasound, CT, and MR

|January 28, 2010

Summary

Computed tomography (CT) of the abdomen involves high radiation doses. This review offers practical guidelines to manage CT radiation dose and risk while maintaining diagnostic accuracy.

Area of Science:

Medical Imaging
Radiology
Radiation Safety

Background:

Technological advancements have expanded abdominal computed tomography (CT) applications.
Abdomen CT is a high-radiation dose examination due to radiosensitive organs.
CT radiation dose is a significant concern for medical professionals, patients, and the media.

Purpose of the Study:

To review the current status of radiation dose and associated risks in abdominal CT.
To provide practical guidelines for managing radiation dose in CT procedures.
To ensure diagnostic confidence is maintained while optimizing radiation exposure.

Main Methods:

Literature review on radiation dose and risk in abdominal CT.
Analysis of current practices and technological developments.

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Synthesis of information to formulate management guidelines.

Main Results:

Abdomen CT poses significant radiation exposure risks.
Effective management strategies are crucial for patient safety.
Guidelines aim to balance diagnostic efficacy with dose reduction.

Conclusions:

Managing radiation dose in abdominal CT is essential.
Practical guidelines can help mitigate risks without compromising diagnostic quality.
Optimizing CT protocols is key to safe abdominal imaging.