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[Dynamic magnetic resonance imaging versus dynamic echography in the staging of Peyronie's disease]
M Nicolai1, A Carriero, R De Thomasis
1Cattedra di Clinica Urologica, Università degli Studi G. d'Annunzio, Chieti.
Abstract:
Clinical examination and ultrasonography are often the only evaluation needed for patient with Peyronie's disease. Magnetic resonance angiography (MRA), a new magnetic resonance imaging (MRI), improves tissue contrast between the fibrous plaque and the near structures. A total of 25 patients with Peyronie's disease underwent palpation, ultrasonography and MRI after dynamic improvement with intrapenile 10 micrograms prostaglandin E1. The patients were studied with conventional ultrasonography (US) (7.5 MHz) and with 1.5 T superconductive magnet (two-dimensional Fourier transform gradient-echo time-of-flight, 2DFT-TOF, sequences and conventional T1 and T2 spin echo (SE) sequences). The US evaluation demonstrated the presence of plaques in 18/25 patients (72%). The SE sequences revealed evidence of plaques in 10/25 patients (40%). MR angiograph enabled the correct evaluation of plaques in 23/25 patients (92%), and identified the involvement of the septum intercavernosum, that was not detected on both US and SE images. MRA provides accurate preoperative information fo correct evaluation of plaque extension in IPP.
Insights
Magnetic resonance angiography (MRA) offers superior plaque detection in patients with Peyronie's disease compared to conventional methods. This advanced MRI technique provides crucial preoperative information for accurate surgical planning.
Area of Science:
- Urology
- Radiology
- Medical Imaging
Background:
- Peyronie's disease (PD) diagnosis often relies on clinical examination and ultrasonography.
- Advanced imaging techniques are being explored to improve the characterization of fibrous plaques.
Purpose of the Study:
- To evaluate the efficacy of Magnetic Resonance Angiography (MRA) in detecting and characterizing Peyronie's disease plaques.
- To compare MRA with conventional ultrasonography (US) and spin echo (SE) MRI sequences.
Main Methods:
- 25 patients with Peyronie's disease underwent palpation, US, and MRI after prostaglandin E1 injection.
- MRI included 2D Fourier Transform-Time-of-Flight (2DFT-TOF) and conventional T1/T2 spin echo (SE) sequences.
- MRA was utilized to assess plaque visualization and extent.
Main Results:
- Ultrasonography detected plaques in 72% of patients (18/25).
- SE MRI sequences identified plaques in 40% of patients (10/25).
- MRA successfully evaluated plaques in 92% of patients (23/25) and identified intercavernosal septum involvement missed by other methods.
Conclusions:
- MRA significantly improves the detection and evaluation of Peyronie's disease plaques compared to US and SE MRI.
- MRA provides accurate preoperative information for assessing plaque extension, aiding in surgical planning for Induratio Penis Plastica (IPP).