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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

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...
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...

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PET and MRI Guided Irradiation of a Glioblastoma Rat Model Using a Micro-irradiator
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Integrating PET and MRI Radiomics for Staging and Prognostic Stratification in Anal Canal Cancer.

Vanessa Murad1, Andres Kohan1, Lisa Avery1

  • 1Department of Medical Imaging, University of Toronto, Toronto, ON M5T 1W7, Canada.

Cancers
|November 27, 2025
PubMed
Summary

Anal canal cancer is a rare malignancy. This study investigates its characteristics and treatment outcomes to improve patient care.

Keywords:
18F-FDG PET/CTanal squamous cell carcinomamagnetic resonance imagingradiomics

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Area of Science:

  • Oncology
  • Gastroenterology

Background:

  • Anal canal cancer represents a small fraction of all cancers.
  • Understanding its epidemiology and clinical behavior is crucial for effective management.

Purpose of the Study:

  • To analyze the incidence, treatment patterns, and survival rates of anal canal cancer.
  • To identify factors influencing patient outcomes in anal canal cancer.

Main Methods:

  • Retrospective analysis of patient data.
  • Review of treatment modalities and follow-up records.

Main Results:

  • Incidence rates and demographic distribution of anal canal cancer.
  • Comparison of treatment efficacy and associated toxicities.

Conclusions:

  • Anal canal cancer requires tailored treatment strategies.
  • Further research can optimize management and improve survival for this rare cancer.