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Related Concept Videos

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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.
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Related Experiment Video

Updated: May 26, 2026

Knee Arthrocentesis in Adults
04:41

Knee Arthrocentesis in Adults

Published on: February 25, 2022

Shoulder MR arthrography: intraarticular anesthetic reduces periprocedural pain and major motion artifacts but does

Michael G Fox1, W Banks Petrey, Bennett Alford

  • 1Department of Radiology, University of Virginia, 1218 Lee St, Box 800170, Charlottesville, VA 22908, USA. mf3kx@virginia.edu

Radiology
|December 7, 2011
PubMed
Summary
This summary is machine-generated.

Adding intraarticular anesthetic to MR arthrography significantly reduces patient pain and motion artifacts. However, this addition does not decrease the overall magnetic resonance imaging time.

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Last Updated: May 26, 2026

Knee Arthrocentesis in Adults
04:41

Knee Arthrocentesis in Adults

Published on: February 25, 2022

Area of Science:

  • Radiology
  • Medical Imaging
  • Anesthesiology

Background:

  • Magnetic resonance (MR) arthrography is a common imaging technique for evaluating joint pathologies.
  • Periprocedural pain and motion artifacts can negatively impact the quality and diagnostic yield of MR arthrography.
  • The addition of intraarticular anesthetics is a potential strategy to mitigate these issues.

Purpose of the Study:

  • To prospectively evaluate the effect of intraarticular anesthetic on periprocedural pain during MR arthrography.
  • To assess the impact of intraarticular anesthetic on motion artifacts in MR arthrography.
  • To determine if intraarticular anesthetic influences the total imaging time for MR arthrography.

Main Methods:

  • A prospective randomized study involving 127 patients undergoing MR arthrography (primarily for shoulder pain).
  • Patients were randomized into two groups: one receiving intraarticular gadopentetate dimeglumine with ropivacaine and saline (Group A), and the other receiving gadopentetate dimeglumine with saline (Group B).
  • Pain was assessed using a 0-10 scale before and after injection and post-imaging. Motion artifact was graded by musculoskeletal radiologists. Imaging time and repeat sequences were recorded.

Main Results:

  • Group A (with anesthetic) showed significantly lower post-injection pain (-0.9, P=.017) and post-imaging pain (-0.8, P=.056) compared to Group B, after adjusting for baseline variables.
  • A significant reduction in major motion artifacts (grade 2 or 3) was observed in Group A compared to Group B (P=.047 and .048 for two radiologists).
  • No significant difference was found in mean total MR imaging time or the number of examinations requiring repeat sequences between the two groups.

Conclusions:

  • The addition of intraarticular anesthetic to MR arthrography significantly alleviates periprocedural pain.
  • Intraarticular anesthetic effectively reduces major motion artifacts, potentially improving diagnostic image quality.
  • While beneficial for pain and image quality, intraarticular anesthetic does not shorten the overall MR imaging duration.