Clinical trial NCT00822952: Prostate Mechanical Imager (PMI) Clinical Bridging Study
Official title: Prostate Mechanical Imager (PMI) Clinical Bridging Study
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Prostatic Neoplasms
Prostatic Hyperplasia
Lead sponsor: Artann Laboratories
Sponsor class: INDUSTRY
Collaborators: name: National Cancer Institute (NCI)
name: Rutgers, The State University of New Jersey
name: Mayo Clinic
name: University of Minnesota
First posted: 2009-01-15
Enrollment: 71
Sex: MALE
Minimum age (years): 21
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: CASE_ONLY
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: All adult male patients between over the age of 21 presenting to the participating clinical sites for urologic examination with the DRE detected prostate abnormality and scheduled for a TRUS-guided prostate biopsy and/ or radical prostatectomy due to an abnormal DRE, and/or increased PSA, and/or other clinical indications will be considered for inclusion. All ethnic and racial groups will be included.

Brief summary: The purpose of this study is to evaluate an imaging capability Prostate Mechanical Imager (PMI), a PC-based device utilizing a transrectal probe with pressure sensor arrays and motion tracking system, aimed at providing composite elasticity images of the prostate.

Detailed description: The clinical application of a Prostate Mechanical Imaging (PMI) technique for prostate assessment is examined in this study. PMI technology is based on the visualization of internal structures and dimensions of the prostate by measuring mechanical stress patterns on the gland surface with pressure sensor arrays. Temporal and spatial changes in the stress pattern provide information on the hardness of the prostate. Projected patient sample size for the study is 40 men over the age of 21. Patients will be selected for the study if both of the following criteria are met: (1) abnormal DRE findings; and (2) patients who are scheduled for a TRUS-guided prostate biopsy and/ or radical prostatectomy due to an abnormal DRE, and/or increased PSA, and/or other clinical indications.

The study is designed to assess the imaging capability of the PMI in three clinical sites, performed by four physicians. Each clinical investigator will perform PMI examination on 10 respective patients with DRE detected abnormality. Pathology data will be collected from TRUS-guided biopsy or radical prostatectomy and will be used as reference data in case there is a discrepancy between the DRE findings and PMI images. Study Hypothesis: Proportion of patients with PMI reconstructed image is anticipated to be consistent with the 84% imaging capability demonstrated in the previous clinical study conducted with the prior version of the PMI device.

Eligibility criteria: Inclusion Criteria:

* all racial and ethnic groups,
* males 21 years of age or older,
* able to withstand body positioning for the entire length of examination,
* presence of DRE detected abnormality,
* scheduled for TRUS-biopsy or surgical removal or prostate,
* able to comprehend, sign, and date the written informed consent form (ICF)

Exclusion Criteria:

* previous pelvic surgery,
* significant hip and / vertebral arthritis,
* rectal Crohn's disease,
* locally disseminated cancer of pelvic structure,
* anal fissure, anal fistula, infected anal fistula,
* anal cancer,
* rectal cancer,
* 1st, 2nd or 3rd degree hemorrhoids,
* pelvic irradiation,
* dehydrated impacted stool,
* no vulnerable patients such as students, nursing home residents, institutionalized patients, and those with psychological or physical incapacity will be included in the study

Primary outcomes:
measure: Prostate Mechanical Imager provides reconstructed image of prostate
timeFrame: 1 Year
Secondary outcomes:
measure: Prostate Mechanical Imager recorded images of prostate are consistent with the abnormal digital rectal examination findings
timeFrame: 1 Year
Other outcomes:
Locations:
city: Minneapolis
country: United States
facility: University of Minnesota/VA Medical Center
state: Minnesota
city: Rochester
country: United States
facility: Mayo Clinic
state: Minnesota
city: New Brunswick
country: United States
facility: Robert Wood Johnson Medical Center
state: New Jersey
city: Garden City
country: United States
facility: AccuMed Research Associates
state: New York
city: Lancaster
country: United States
facility: Urology Associates of Lancaster
state: Pennsylvania
Study officials:
affiliation: Artann Laboratories
name: Armen Sarvazyan, Ph.D., D.Sc.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Weiss RE, Egorov V, Ayrapetyan S, Sarvazyan N, Sarvazyan A. Prostate mechanical imaging: a new method for prostate assessment. Urology. 2008 Mar;71(3):425-9. doi: 10.1016/j.urology.2007.11.021.