Related Experiment Video

Updated: May 8, 2025

Whole-body PET/MRI of Pediatric Patients: The Details That Matter
10:02

Whole-body PET/MRI of Pediatric Patients: The Details That Matter

Published on: December 19, 2017

14.3K

Multi-band vs. conventional diffusion-weighted MRI of the abdomen in children and young adults

Pradipta Debnath1, Jean A Tkach1,2, Zachary R Abramson3

  • 1Cincinnati Children's Hospital Medical Center, Cincinnati, USA.

Abdominal Radiology (New York)
|December 24, 2024
PubMed
Abstract

Insights

Multi-band diffusion-weighted imaging (MB-DWI) significantly shortens pediatric abdominal MRI scan times. This technique maintains acceptable image quality and lesion visibility, offering a valuable alternative for children and young adults.

Area of Science:

  • Radiology
  • Pediatric Imaging
  • Magnetic Resonance Imaging (MRI)

Background:

  • Diffusion-weighted imaging (DWI) in pediatric abdominal MRI is challenged by motion artifacts due to long acquisition times.
  • Developing faster DWI techniques is crucial for improving patient comfort and reducing motion-related image degradation in children.

Purpose of the Study:

  • To compare acquisition time and image quality between conventional DWI and multi-band (MB) DWI for liver imaging in pediatric and young adult patients.
  • To evaluate the effectiveness of MB-DWI in reducing scan duration while preserving diagnostic image quality.

Main Methods:

  • Retrospective review of pediatric and young adult MRI exams utilizing four DWI sequences: respiratory-triggered (RTr), free-breathing (FB), MB-DWI with shift factor 1 (MBsf1), and MB-DWI with shift factor 2 (MBsf2).
  • Quantitative analysis of acquisition times, signal intensity, and apparent signal-to-noise ratio (aSNR).
  • Qualitative assessment of image quality, artifacts, and lesion visualization by six blinded pediatric radiologists using a 5-point Likert scale.

Main Results:

  • MB-DWI sequences (MBsf1/MBsf2) demonstrated significantly reduced median acquisition times (43 seconds) compared to FB (84 seconds) and RTr (240 seconds).
  • Conventional RTr and FB sequences yielded higher image quality and fewer artifacts compared to MB-DWI (p < 0.0001).
  • Lesion visualization scores were comparable across all sequences (p = 0.11), with no radiologist preference in 47% of cases; Apparent Diffusion Coefficient (ADC) values remained consistent.

Conclusions:

  • Multi-band DWI substantially decreases acquisition time in pediatric abdominal MRI.
  • MB-DWI offers a viable alternative for pediatric abdominal imaging, balancing reduced scan duration with acceptable image quality and diagnostic utility.
  • This technique holds promise for improving the efficiency and patient experience in pediatric MRI.
Keywords:
AbdomenDiffusion-weighted imaging (DWI)LiverMRIMulti-band (MB)Pediatrics

More Related Videos

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure15:18

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure

Published on: July 30, 2009

18.1K
Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging15:48

Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging

Published on: December 15, 2014

22.3K

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...
4.8K
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...
93
Ultrasonography01:17

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
4.2K
Computed Tomography01:10

Computed Tomography

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...
4.1K
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...
169