Hyperpolarized 13C MRI: State of the Art and Future Directions.
Zhen J Wang, Michael A Ohliger, Peder E Z Larson...
https://pubmed.ncbi.nlm.nih.gov/30835184/Actively Recruiting
Led by University of Maryland, Baltimore · Updated on 2025-09-22
25
Participants Needed
1
Research Sites
104 weeks
Total Duration
This trial investigates the use of hyperpolarized 13C pyruvate MRI imaging to study various cancers by visualizing metabolic activity related to the Warburg effect, a process where cancer cells use increased glucose and convert pyruvate to lactate via anaerobic respiration. This imaging approach aims to better detect and characterize tumors by examining downstream metabolic changes beyond what current 18F-FDG imaging evaluates. The study is in early phases and seeks to clarify the utility of this method across multiple tumor types. Participants will receive an intravenous injection of 250 mM hyperpolarized 13C pyruvate after their standard imaging sequences. Following the injection, they will undergo specialized hyperpolarized MR imaging to observe the conversion of pyruvate to lactate within tumors. This experimental imaging procedure is designed to capture three-dimensional visualizations of the tumors and their metabolic products. During the study, participants will have standard imaging and the hyperpolarized 13C MRI scan. Researchers will monitor the conversion of pyruvate to lactate over 18 to 36 months as the primary outcome. Secondary outcomes include measures of signal-to-noise and contrast-to-noise ratios over 12 to 42 months. The study involves ongoing assessments of tumor metabolism and imaging quality, with participation lasting up to several years to evaluate these metabolic processes in detail.
CONDITIONS
HP Pyruvate MRI in Cancers
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University of Maryland, Baltimore
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Hyperpolarized 13C-Pyruvate MRI (Investigational) | Conventional MRI (Current Standard) |
|---|---|---|
| What it is | An investigational MRI technique where patients receive an intravenous injection of hyperpolarized 13C-labeled pyruvate, enabling real-time imaging of metabolic conversion in tumors. | Current clinical MRI protocol for tumor imaging, typically using T1, T2, and contrast-enhanced sequences, but without metabolic enhancement. |
| Role in trial | Test method evaluated as the primary imaging approach under investigation in all enrolled participants. | Used as the baseline or reference imaging approach in clinical practice, but not tested as a trial intervention. |
| Primary use | To evaluate tumor metabolism by measuring the conversion of pyruvate to lactate within tumors and potentially enhance metabolic characterization. | To provide structural and some functional information on tumor location, size, and morphology for diagnosis and ongoing monitoring. |
| How it is given or performed | Patients receive an intravenous injection of hyperpolarized 13C-pyruvate prior to MRI scanning. MR spectroscopy tracks conversion to lactate in real time. | No intravenous metabolic agents are administered. Standard MRI sequences and contrast agents are used as per clinical protocols. |
| Evidence status | Early clinical trials and research indicate this technique is promising for noninvasive assessment of tumor metabolism, but evidence for routine diagnostic benefit is still maturing. | Widely validated for detection, characterization, and follow-up of tumors in clinical practice. |
| Important limitations | Limited to research settings; equipment and hyperpolarization agents may not be widely available. Clinical value for guiding treatment decisions is under investigation. | While widely accessible, conventional MRI provides limited metabolic or real-time molecular information about tumors. |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
You may qualify if you...
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - Single imaging session
Participants undergo imaging of tumors before and after receiving an injection of hyperpolarized 13-C pyruvate to assess metabolic activity.
1 visit (in-person)
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
DIAGNOSTIC
Number of Arms
1
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Zhen J Wang, Michael A Ohliger, Peder E Z Larson...
https://pubmed.ncbi.nlm.nih.gov/30835184/Mark J Albers, Robert Bok, Albert P Chen...
https://pubmed.ncbi.nlm.nih.gov/18922937/Murali K Ravoori, Sheela P Singh, Jaehyuk Lee...
https://pubmed.ncbi.nlm.nih.gov/28707963/University of Maryland, Baltimore
Lead Sponsor