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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...
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A Cognitive Fusion-guided Prostate Biopsy Using Multiparametric Magnetic Resonance Imaging and Transrectal Ultrasound
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Quantitative Multi-Parametric MRI of the Prostate Reveals Racial Differences.

Aritrick Chatterjee1,2, Xiaobing Fan1, Jessica Slear1

  • 1Department of Radiology, University of Chicago, Chicago, IL 60637, USA.

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|October 26, 2024
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Summary
This summary is machine-generated.

African Americans (AAs) show distinct quantitative dynamic contrast-enhanced MRI (DCE-MRI) values and histology for prostate cancer (PCa) compared to Caucasian Americans (CAs). DCE-MRI significantly enhances PCa diagnosis in AAs.

Keywords:
African AmericansCaucasian AmericansDCE-MRIMRIprostate cancerquantitativeracial differences

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Area of Science:

  • Radiology and Imaging Science
  • Oncology and Cancer Research
  • Medical Diagnostics

Background:

  • Prostate cancer (PCa) diagnosis and management can be influenced by racial differences.
  • Quantitative magnetic resonance imaging (qMRI) metrics may reveal underlying biological variations.
  • Understanding race-specific differences in PCa imaging is crucial for accurate diagnosis.

Purpose of the Study:

  • To investigate racial disparities in quantitative MRI and prostate histology between African Americans (AAs) and Caucasian Americans (CAs).
  • To determine if these differences impact the diagnostic accuracy of MRI for prostate cancer.

Main Methods:

  • 3T MRI (T2W, DWI, DCE-MRI) was performed on 98 CAs and 47 AAs with suspected PCa.
  • Quantitative MRI metrics (ADC, T2, DCE parameters α and β) were calculated.
  • Histologic analysis of prostatectomy specimens was conducted.

Main Results:

  • AAs had a higher percentage of higher Gleason-grade PCa.
  • No significant differences in ADC or T2 values were observed between groups.
  • DCE-MRI showed significantly higher enhancement rate (α) in AAs (13.3 s⁻¹) vs. CAs (6.1 s⁻¹).
  • DCE-MRI washout rate (β) differed significantly in both benign (lower in AAs) and cancer tissue (higher in AAs).
  • DCE-MRI improved PCa differentiation in AAs (α: 52%, β: 62% more effective).
  • Histology revealed AAs had lower epithelial proportion and higher lumen in PCa compared to CAs.

Conclusions:

  • African Americans exhibit distinct quantitative DCE-MRI values and PCa histology compared to Caucasian Americans.
  • Quantitative DCE-MRI significantly enhances prostate cancer detection in AAs.
  • MRI performance for PCa diagnosis is race-dependent, with DCE-MRI being more effective in AAs.