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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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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...
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Imaging Studies III: Computed Tomography01:27

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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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Disorders of the Male Reproductive System01:20

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Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
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Radiological Investigation I: X-ray and CT01:30

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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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Biological Effects of Radiation

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All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
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Cancer Death Risk Related to Radiation Exposure from Computed Tomography Scanning Among Testicular Cancer Patients.

Eeva Salminen1,2, Hannele Niiniviita3,4, Hannu Järvinen5

  • 1STUK-Radiation and Nuclear Safety Authority, Helsinki, Finland eevsal@utu.fi.

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Computed tomography (CT) effective doses in testicular cancer patients were assessed. Radiation-related cancer death risk was lower in older patients, highlighting the need to minimize CT radiation exposure, especially in younger individuals.

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Area of Science:

  • Medical Imaging
  • Radiation Oncology
  • Public Health

Background:

  • Computed tomography (CT) is a vital diagnostic tool, but effective doses and associated radiation-related cancer death risks require careful evaluation.
  • Understanding these risks is crucial for optimizing patient care, particularly for individuals undergoing long-term follow-up.

Purpose of the Study:

  • To estimate effective doses from CT scans in testicular cancer patients.
  • To examine the association between CT effective doses and radiation-induced cancer death risk.
  • To analyze the impact of age at diagnosis on radiation exposure and risk.

Main Methods:

  • Effective doses were calculated from CT scans of testicular cancer patients.
  • Radiation-induced cancer death risk was assessed using the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) 2008 formula.
  • Data from patients treated and followed up at Turku University Hospital were analyzed.

Main Results:

  • Mean effective dose per abdominal CT was 9.32 mSv and per whole-body CT was 14.24 mSv.
  • Estimated risks for radiation-related cancer death ranged from 0.11% to 1.14% over a 6-year follow-up.
  • Risk of radiation-induced cancer death was significantly lower in patients diagnosed at older ages.

Conclusions:

  • Patient radiation exposure from CT is influenced by imaging protocols and device types, necessitating regular review and updates to minimize doses.
  • Diagnostic CT exposure contributed to an estimated 2% risk of radiation-related cancer death in the study cohort.
  • Younger patients at diagnosis received higher radiation exposure, underscoring the importance of age-specific radiation protection strategies.