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Gadobutrol

Gadobutrol, also known by brand names Gadovist and Gadavist, is a contrast agent used in magnetic resonance imaging (MRI) to enhance image quality and provide more detailed information about various medical conditions. This article explores the use of Gadobutrol in clinical trials for imaging breast cancer, brain tumors, gynecologic cancers, and other conditions. We’ll examine how this contrast agent is being studied to improve diagnostic accuracy and treatment planning across different medical specialties.

Table of Contents

What is Gadobutrol?

Gadobutrol is a medical contrast agent used in magnetic resonance imaging (MRI) procedures. It is also known by its brand names Gadovist and Gadavist[1]. Gadobutrol is a type of gadolinium-based contrast agent (GBCA) that helps improve the visibility of internal body structures during MRI scans[2].

How Gadobutrol Works

When injected into the body, Gadobutrol enhances the contrast between different tissues in MRI images. This makes it easier for doctors to see and evaluate various structures and potential abnormalities. Gadobutrol works by altering the magnetic properties of water molecules in the body, which results in brighter or darker areas on MRI scans depending on how the contrast agent distributes in different tissues[3].

Medical Uses of Gadobutrol

Gadobutrol is used in a variety of medical imaging applications, including:

  • Brain and Central Nervous System Imaging: Gadobutrol helps detect and visualize areas with disrupted blood-brain barrier and abnormal blood vessel formation in the brain and spinal cord[4].
  • Breast Cancer Imaging: It is used in breast MRI to help detect and evaluate breast cancers, potentially identifying additional tumors that may not be visible on standard mammograms[5].
  • Cardiac (Heart) Imaging: Gadobutrol is used in cardiac MRI to assess blood flow to the heart muscle and identify areas of reduced blood supply or scarring[6].
  • Whole Body MRI: It can be used for various imaging needs throughout the body[7].

How Gadobutrol is Administered

Gadobutrol is typically administered in the following ways:

  • Intravenous Injection: The most common method is through an injection into a vein, usually at a dose of 0.1 millimoles per kilogram of body weight[8].
  • Intravesical Administration: In some research studies, Gadobutrol is being investigated for use directly in the bladder to assess bladder wall permeability in conditions like interstitial cystitis[9].

The exact dose and method of administration may vary depending on the specific type of MRI exam and the patient’s individual characteristics.

Safety and Side Effects

Gadobutrol is generally considered safe when used as directed by healthcare professionals. However, like all medications, it can have side effects. Common side effects may include:

  • Headache
  • Nausea
  • Dizziness
  • Injection site reactions (such as pain or warmth)

In rare cases, more serious allergic reactions can occur. Patients with kidney problems may be at risk for a condition called nephrogenic systemic fibrosis when exposed to gadolinium-based contrast agents, so kidney function is typically assessed before administering Gadobutrol[7].

Ongoing Research with Gadobutrol

Researchers continue to study Gadobutrol to expand its uses and improve imaging techniques. Some areas of ongoing research include:

  • Breast Cancer Detection: Studies are evaluating the effectiveness of Gadobutrol in detecting and characterizing breast cancers, comparing it to other imaging methods[5].
  • Cardiac Imaging: Researchers are investigating optimal doses and techniques for using Gadobutrol in heart MRI scans[6].
  • Gynecologic Cancer Assessment: New MRI techniques using Gadobutrol are being developed to better evaluate tumors in gynecologic cancers[10].
  • Bladder Disorders: Gadobutrol is being studied for its potential use in assessing bladder wall permeability in conditions like interstitial cystitis[9].

These ongoing studies aim to improve diagnostic accuracy and expand the applications of Gadobutrol in medical imaging.

Aspect Details
Primary Uses Enhancing MRI images for various conditions including breast cancer, brain tumors, and gynecologic cancers
Dosage Typically 0.1 mmol/kg body weight, with some studies exploring lower doses (e.g., 0.01 mmol/kg, 0.025 mmol/kg)
Administration Intravenous injection, usually as a single bolus
Imaging Techniques Used in various MRI techniques including DCE-MRI and delayed enhancement imaging
Key Outcomes Improved detection of malignancies, better characterization of tumor extent, enhanced visualization of tissue perfusion
Safety Profile Generally well-tolerated, with ongoing monitoring for adverse events in clinical trials
Comparative Studies Being compared to other contrast agents like ProHance for efficacy and safety
Future Directions Exploration of lower doses, application in new imaging techniques, and use in treatment response assessment

FAQ

  • What is Gadobutrol and how is it used in MRI? Gadobutrol is a contrast agent used in magnetic resonance imaging (MRI) to enhance image quality. It is injected intravenously before an MRI scan to help highlight specific areas of the body, making abnormalities more visible and easier to diagnose.
  • What types of conditions are being studied using Gadobutrol in clinical trials? Clinical trials are investigating the use of Gadobutrol in various conditions, including breast cancer, brain tumors, gynecologic cancers, and other neurological disorders. These studies aim to improve the accuracy of diagnosis and staging of these diseases.
  • How does Gadobutrol compare to other contrast agents? Some trials, like the one comparing Gadobutrol (Gadovist/Gadavist) to ProHance, are designed to assess the performance of Gadobutrol against other contrast agents. These studies help determine if Gadobutrol offers any advantages in image quality or diagnostic accuracy.
  • What are the potential benefits of using Gadobutrol in breast cancer imaging? Clinical trials are exploring how Gadobutrol-enhanced MRI can improve the detection of breast cancers, including additional cancers not visible on standard mammograms. This could lead to more accurate staging and treatment planning for breast cancer patients.
  • Are there any safety concerns with using Gadobutrol? While Gadobutrol is generally considered safe, clinical trials also monitor for any adverse events or changes in vital signs after administration. Some studies specifically focus on assessing the safety and tolerability of Gadobutrol in different patient populations.

Ongoing Clinical Trials on Gadobutrol

  • Study on Glenzocimab for Patients with Large Ischemic Stroke Eligible for Endovascular Therapy

    Not recruiting

    2 1 1
    Investigated diseases:
    Investigated drugs:
    France

  • Study on the Safety and Effectiveness of BI 3720931 for Adults with Cystic Fibrosis Who Cannot Use CFTR Modulators

    Not recruiting

    2 1 1
    Investigated diseases:
    Investigated drugs:
    France Italy The Netherlands Spain

  • Study Comparing Gadoquatrane with Gadoteric Acid, Gadobutrol, and Gadoteridol for MRI in Adults with Brain or Spinal Cord Issues

    Not recruiting

    3 1 1 1
    Investigated diseases:
    Investigated drugs:
    Bulgaria Czechia France Germany Hungary Italy +1

  • Study to Test BI 765845 for Patients with Heart Attack

    Not recruiting

    2 1 1
    Investigated diseases:
    Investigated drugs:
    Czechia Germany Hungary Italy Poland Slovakia +1

  • Study on the Use of Hyperpolarized Xenon (129Xe) and Gadobutrol for Imaging in Patients with Progressive Fibrosing Interstitial Lung Diseases

    Not recruiting

    2 1 1 1
    Investigated diseases:
    Investigated drugs:
    Denmark

  • Study Comparing Gadoquatrane with Gadoteric Acid, Gadoteridol, and Gadobutrol for MRI in Patients with Non-CNS Conditions

    Not recruiting

    3 1 1 1
    Investigated diseases:
    Investigated drugs:
    Bulgaria Czechia France Germany Hungary Italy +2

Glossary

  • Gadobutrol: A contrast agent used in magnetic resonance imaging (MRI) to enhance image quality and provide more detailed information about various medical conditions.
  • MRI: Magnetic Resonance Imaging, a non-invasive imaging technique that uses strong magnetic fields and radio waves to create detailed images of the body's internal structures.
  • Contrast agent: A substance given to patients before imaging procedures to enhance the visibility of certain tissues or blood vessels in the resulting images.
  • DCE-MRI: Dynamic Contrast-Enhanced MRI, an advanced imaging technique that uses contrast agents to provide information about blood flow and tissue characteristics over time.
  • Ktrans: A quantitative parameter used in DCE-MRI analysis that represents the transfer rate of the contrast agent from blood plasma into the tissue.
  • Delayed Enhancement: A technique in MRI where images are taken some time after contrast agent administration to highlight areas of tissue damage or scarring.
  • Multicentric disease: In breast cancer, the presence of two or more distinct tumors in different quadrants of the breast or in different breasts.
  • Unifocal: Referring to a single tumor or lesion in one location.
  • Multifocal: Referring to multiple tumors or lesions in the same region or organ.
  • Histopathology: The examination of tissue samples under a microscope to study the manifestations of disease.

References

  1. https://clinicaltrials.gov/study/NCT01613417
  2. https://clinicaltrials.gov/study/NCT02274246
  3. https://clinicaltrials.gov/study/NCT01995240
  4. https://clinicaltrials.gov/study/NCT06224543
  5. https://clinicaltrials.gov/study/NCT01067976
  6. https://clinicaltrials.gov/study/NCT01490294
  7. https://clinicaltrials.gov/study/NCT00905879
  8. https://clinicaltrials.gov/study/NCT01104584
  9. https://clinicaltrials.gov/study/NCT05811377
  10. https://clinicaltrials.gov/study/NCT04893434