Current knowledge on tumour induction by computed tomography should be carefully used.
Cristian Candela-Juan1, Alegría Montoro, Enrique Ruiz-Martínez
1Radioprotection Department, La Fe University and Polytechnic Hospital, Valencia, 46026, Spain, ccanjuan@gmail.com.
European Radiology
|November 28, 2013
Summary
Computed tomography (CT) scans pose minimal cancer risks, comparable to background levels, with significant uncertainties in current estimates. Accurate epidemiological data and transparent communication of risks versus benefits are crucial for informed medical decisions.
Area of Science:
- Medical Physics
- Radiology
- Public Health
Background:
- Ionizing radiation from medical imaging, particularly computed tomography (CT), raises public and medical concern regarding cancer induction.
- CT examinations contribute significantly to the collective radiation dose, necessitating accurate risk assessment.
Purpose of the Study:
- To review and analyze models used for estimating cancer induction risks from CT examinations.
- To present current estimates of CT-induced cancer probability and discuss associated uncertainties.
Main Methods:
- Literature review of cancer induction models relevant to CT.
- Analysis of scientific community's approaches to estimating CT-related cancer detriments.
- Evaluation of current probability estimates and their uncertainties.
Main Results:
- Current estimates indicate a low probability of CT-induced cancer, near background radiation levels.
- Significant uncertainties exist in these estimations, influenced by model choices and data limitations.
- The linear no-threshold model for radiation effects remains a point of scientific debate.
Conclusions:
- Epidemiological data with improved dosimetric accuracy are essential for reliable risk assessment.
- Predictions of radiation-induced tumors should be presented with realistic uncertainty evaluations and balanced against CT benefits.
- Avoidance of patient alarm regarding CT-related cancer risks is recommended, emphasizing the necessity of the procedure.
Related Concept Videos
01:10Computed 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...
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...
7.6K
01:27Imaging Studies III: Computed Tomography
902
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...
902
01:30Radiological Investigation I: X-ray and CT
1.8K
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...
1.8K
01:14Imaging Studies I: CT and MRI
1.3K
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...
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...
1.3K
01:28Imaging Studies for Cardiovascular System V: CT
673
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...
673