Related Experiment Video
Updated: Jan 21, 2026
Use of MRI-ultrasound Fusion to Achieve Targeted Prostate Biopsy
Published on: April 9, 2019
Abbreviated Protocols versus Multiparametric MRI for Assessment of Extraprostatic Extension in Prostatic Carcinoma: A
Arnaldo Stanzione1, Andrea Ponsiglione1, Renato Cuocolo2
1Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy.
Background/Aim:
Prostate multiparametric magnetic resonance imaging (mpMRI) is the reference imaging modality for extraprostatic extension of disease (EPE) assessment. We aimed to compare the diagnostic accuracy of different abbreviated MRI protocols to the standard prostate mpMRI in the identification of EPE of PCa.
Patients And Methods:
Fifty patients were retrospectively enrolled. Dual-pulse (dpMRI) and biparametric (bpMRI) abbreviated protocols were obtained from mpMRI. The performance of two experienced radiologists and two radiology residents was correlated with a reference standard and compared. Inter and intra-reader agreements were evaluated.
Results:
All protocols were strongly correlated to the reference standard (p≤0.001). A significant difference was found between dpMRI and mpMRI (p=0.009), no differences emerged between bpMRI and mpMRI (p=0.27). All readers showed moderate agreement (ĸ=0.47, ĸ=0.50 and ĸ=0.53 for dpMRI, bpMRI and mpMRI, respectively). Intra-reader agreement was good (all ĸ values ≥0.70).
Conclusion:
Only bpMRI showed similar diagnostic performance to mpMRI, thus appearing as a feasible alternative to the standard protocol for EPE detection.
Insights
Biparametric MRI (bpMRI) matches standard prostate multiparametric MRI (mpMRI) for detecting extraprostatic extension of prostate cancer. This abbreviated MRI protocol offers a feasible alternative for EPE assessment.
Area of Science:
- Radiology
- Oncology
- Medical Imaging
Background:
- Prostate multiparametric magnetic resonance imaging (mpMRI) is the standard for assessing extraprostatic extension (EPE) in prostate cancer.
- Accurate EPE detection is crucial for treatment planning and patient outcomes.
- Abbreviated MRI protocols may offer efficiency improvements without compromising diagnostic accuracy.
Purpose of the Study:
- To compare the diagnostic accuracy of abbreviated MRI protocols, specifically dual-pulse (dpMRI) and biparametric (bpMRI), against the standard prostate mpMRI for identifying EPE.
- To evaluate the feasibility of abbreviated MRI protocols as alternatives to standard mpMRI for EPE detection.
Main Methods:
- Retrospective analysis of mpMRI scans from 50 patients.
- Generation of dpMRI and bpMRI protocols from existing mpMRI data.
- Comparison of diagnostic performance of abbreviated protocols versus standard mpMRI using a reference standard.
- Assessment of inter- and intra-reader agreement among radiologists with varying experience levels.
Main Results:
- All evaluated MRI protocols demonstrated strong correlation with the reference standard (p≤0.001).
- Biparametric MRI (bpMRI) showed no significant difference in diagnostic performance compared to standard mpMRI (p=0.27).
- Dual-pulse MRI (dpMRI) showed a significant difference compared to mpMRI (p=0.009).
- Moderate inter-reader agreement was observed across all protocols (ĸ=0.47-0.53), with good intra-reader agreement (ĸ≥0.70).
Conclusions:
- Biparametric MRI (bpMRI) exhibits comparable diagnostic performance to standard prostate mpMRI for EPE detection.
- bpMRI represents a viable and potentially more efficient alternative protocol for identifying extraprostatic extension of prostate cancer.
- Abbreviated MRI protocols require further validation but show promise in streamlining prostate cancer imaging assessment.
Related Concept Videos
01:14Imaging Studies I: CT and MRI
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...
01:30Radiological Investigation II: MRI and Ventilation Perfusion Scan
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
01:27Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
Medical History
01:22Case Studies
01:26Assessment of the Mouth
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
01:29Nursing Assessment
The nurse collects all aspects of the patient's health in the initial assessment, establishing priorities for ongoing focused assessments...