Prostate Cancer
Conditions
Keywords
Prostate Cancer, MRI, TRUSBx
Brief summary
MultiSpectral 3 Tesla MRI (MS3TMRI) can increase the yield of Trans Rectal Ultrasound Biopsy (TRUSBx) to improve identification of patients on active surveillance requiring treatment.
Detailed description
This is a prospective single arm study. 120 patients at risk for significant occult prostate cancer on an active surveillance program will undergo MS3TMRI followed by a standard TRUSBx and additional biopsies guided by the MS3TMRI results. The positive predictive value (PPV) of MS3TMRI-TRUSBx for cancer requiring consideration of therapy will be compared to the PPV of TRUSBx alone. MS3TMRI consists of T2, diffusion-weighted imaging (DWI), dynamic contrast enhanced MRI (DCEMRI), proton MR spectroscopy (MRS) interpreted by a radiologist and by CAD methods validated on whole mount prostate specimens.
Interventions
Multispectral 3 Tesla MRI imaging with contrast followed by biopsy
Sponsors
Study design
Eligibility
Inclusion criteria
* Enrolled in active surveillance at Sunnybrook Health Sciences Centre, requiring biopsy as part of surveillance protocol. * Clinically eligible for radical prostatectomy and willing to undergo surgery * Clinically eligible for and willing to undergo ultrasound biopsy within 8 weeks of MRI
Exclusion criteria
* Claustrophobia * Contraindication to MRI * Contraindication to receiving low molecular weight MRI contrast agent * Prior hormone therapy except 5-alpha reductase inhibitors such as Avodart. FloMax etc * Clinically suspected or known compromised renal function or calculated estimated Glomerular Filtration Rate (eGFR) \<30ml/min
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The Positive Predictive Value (PPV) of MS3TMRI-TRUSBx for detection of a patient with a cancer burden requiring consideration of immediate therapy. | The outcome measure will be evaluated at the time of the results of the TRUSbx which will be approximately 2 weeks after the biopsy | Compare the targeted biopsy to the random biopsies |
Secondary
| Measure | Time frame |
|---|---|
| The number of cores required for diagnosis of prostate cancer for MS3TMRI-TRUSBx versus TRUSBx alone | The outcome measure will be evaluated at the time of the results of the TRUSbx which will be approximately 2 weeks after the biopsy |
Countries
Canada