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Related Concept Videos

Imaging Studies I: CT and MRI01:14

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 I: X-ray and CT01:30

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 for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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...
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...
Imaging Studies for Cardiovascular System III: X-Ray01:20

Imaging Studies for Cardiovascular System III: X-Ray

The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...

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Related Experiment Video

Updated: May 29, 2026

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
13:44

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

Published on: August 30, 2013

The mammography controversy: when should you screen?

Summer Sawyer Allen1, Sandhya Pruthi

  • 1Department of Family Medicine, Mayo Clinic, Rochester, MN, USA.

The Journal of Family Practice
|September 9, 2011
PubMed
Summary

The American College of Obstetricians and Gynecologists (ACOG) recommends earlier and more frequent breast cancer screenings. The U.S. Preventive Services Task Force (USPSTF) suggests later screening initiation. This highlights a key difference in screening guidelines.

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Clinical Imaging of Microwave Mammography
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Clinical Imaging of Microwave Mammography

Published on: November 14, 2025

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Last Updated: May 29, 2026

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
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Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

Published on: August 30, 2013

Clinical Imaging of Microwave Mammography
05:28

Clinical Imaging of Microwave Mammography

Published on: November 14, 2025

Area of Science:

  • Oncology
  • Preventive Medicine
  • Women's Health

Background:

  • Breast cancer screening guidelines differ among major health organizations.
  • The American College of Obstetricians and Gynecologists (ACOG) recently updated their recommendations.
  • The U.S. Preventive Services Task Force (USPSTF) has established different screening protocols.

Purpose of the Study:

  • To compare the latest ACOG and USPSTF guidelines for breast cancer screening.
  • To analyze the evidence supporting differing recommendations on screening frequency and age.
  • To inform clinical decision-making regarding optimal breast cancer detection strategies.

Main Methods:

  • Review and synthesis of current ACOG and USPSTF guideline documents.
  • Comparative analysis of screening age, interval, and modality recommendations.
  • Examination of the evidence base cited by each organization.

Main Results:

  • ACOG now recommends earlier initiation of biennial screening mammography for average-risk women.
  • USPSTF continues to recommend biennial screening mammography starting at age 40 for women aged 40-74.
  • Discrepancies exist regarding the optimal age to begin screening and the recommended frequency.

Conclusions:

  • Clinicians must navigate conflicting breast cancer screening recommendations.
  • Shared decision-making with patients is crucial to personalize screening plans.
  • Further research may be needed to reconcile differing guideline approaches.