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Related Concept Videos

Appendicitis-I: Introduction01:22

Appendicitis-I: Introduction

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The appendix, a small, narrow, blind tube extending from the inferior part of the cecum, is widely regarded as a vestigial organ, having lost much of its original function through evolution. Despite its diminished role, the appendix can become inflamed, a condition known as appendicitis.
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
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Appendicitis-II: Diagnostic Studies and Management01:29

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Diagnosing and managing appendicitis requires a structured and comprehensive approach that spans from initial assessment to postoperative care. Here is an overview of the process:
Diagnosing Appendicitis
It requires a multifaceted approach, starting with a detailed physical examination to pinpoint the location and nature of the pain and identify any associated symptoms. Laboratory tests play a crucial role. A complete Blood Count (CBC) typically reveals leukocytosis (an increased number of...
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Imaging Studies I: CT and MRI01:14

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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...
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Acute Pharyngitis01:30

Acute Pharyngitis

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Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
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Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

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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...
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Acute Pancreatitis I: Introduction01:27

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Pancreatitis is inflammation of the pancreas, an organ located behind the stomach. It can be either acute or chronic.
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
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Optogenetic Functional MRI
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MRI of acute appendicitis.

Benjamin M Mervak1, Sarah B Wilson2, Brian D Handly3

  • 1University of North Carolina Department of Radiology, Division of Abdominal Imaging, Chapel Hill, North Carolina, USA.

Journal of Magnetic Resonance Imaging : JMRI
|March 19, 2019
PubMed
Summary

Magnetic resonance imaging (MRI) offers a highly accurate alternative for diagnosing appendicitis, especially in children and pregnant women, avoiding radiation exposure. This review details MRI

Keywords:
MRIappendicitispediatric radiologypregnancy

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Area of Science:

  • Radiology
  • Medical Imaging
  • Gastrointestinal Imaging

Background:

  • Appendicitis is a leading cause of acute abdominal pain requiring surgery.
  • Ultrasound (US) and computed tomography (CT) are traditional diagnostic tools.
  • Concerns regarding ionizing radiation limit CT and US use in pediatric and pregnant patients.

Purpose of the Study:

  • To review the advantages and disadvantages of MRI for appendicitis evaluation.
  • To summarize diagnostic performance studies comparing MRI, CT, and US.
  • To outline a standard MRI protocol and findings for appendicitis and differential diagnoses.

Main Methods:

  • Review of existing literature on MRI for appendicitis.
  • Comparative analysis of diagnostic accuracy studies.
  • Description of MRI protocols and imaging findings.

Main Results:

  • MRI demonstrates high accuracy in diagnosing appendicitis.
  • MRI is particularly valuable in pediatric and pregnant populations due to lack of ionizing radiation.
  • Studies show comparable or superior performance of MRI to CT and US in specific patient groups.

Conclusions:

  • MRI is an accurate and increasingly important imaging modality for acute appendicitis.
  • It provides a safe alternative to ionizing radiation-based imaging.
  • Understanding MRI protocols and findings is crucial for effective diagnosis.