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Clinical Trials01:16

Clinical Trials

Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
Clinical Trials: Overview01:11

Clinical Trials: Overview

Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
Blinding01:11

Blinding

Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches01:23

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast, controlled...
Bioavailability Study Design: Single Versus Multiple Dose Studies01:11

Bioavailability Study Design: Single Versus Multiple Dose Studies

Bioavailability studies are essential for understanding how a drug is absorbed, distributed, metabolized, and excreted in the body. These studies assess the extent and rate at which the active pharmaceutical agent becomes available at the site of action. The design of bioavailability studies can involve single-dose or multiple-dose regimens, each with distinct advantages and limitations.Single-dose studies are the preferred approach due to their simplicity and reduced drug exposure for...

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Related Experiment Video

Updated: May 13, 2026

Basics of Multivariate Analysis in Neuroimaging Data
06:35

Basics of Multivariate Analysis in Neuroimaging Data

Published on: July 24, 2010

Advanced MR techniques in multicenter clinical trials.

Edward Ashton1, Jonathan Riek

  • 1VirtualScopics, Inc., Rochester, New York 14625, USA. ashton@virtualscopics.com

Journal of Magnetic Resonance Imaging : JMRI
|March 26, 2013
PubMed
Summary
This summary is machine-generated.

Advanced magnetic resonance imaging (MRI) techniques can now be consistently implemented across multiple clinical trial sites. This enables better assessment of targeted therapeutics by measuring changes in tumor microvasculature, overcoming previous limitations.

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Area of Science:

  • Radiology
  • Oncology
  • Clinical Trials

Background:

  • Magnetic resonance imaging (MRI) has been used in clinical trials for over 20 years, primarily for subjective interpretation and structural measurements.
  • Advanced MR techniques offer superior insights into therapeutic effects, particularly on tumor microvasculature, but have historically faced challenges in multi-site consistency.

Purpose of the Study:

  • To review the benefits and drawbacks of incorporating advanced MR techniques into clinical trial protocols.
  • To detail the challenges of deploying these advanced techniques across diverse imaging centers.

Main Methods:

  • Review of existing literature and clinical trial methodologies.
  • Discussion of protocol design, site selection, training, and analysis standardization for advanced MR imaging.

Main Results:

  • Advanced MR techniques, such as dynamic contrast-enhanced MRI, can effectively measure changes in tumor blood flow and vascular permeability.
  • Recent efforts demonstrate that with meticulous planning and standardization, consistent and high-quality results are achievable across multiple sites, even with complex protocols.

Conclusions:

  • Advanced MR techniques are valuable for evaluating targeted therapeutics affecting tumor microvasculature.
  • Overcoming implementation challenges is key to leveraging these powerful tools in large-scale clinical trials across various research institutions and community imaging centers.