Document Detail

Tissue Resonance Interaction Method (TRIMprob) has the potential to be used alongside the recognized tests in the screening protocols for prostate cancer.
MedLine Citation:
PMID:  19456986     Owner:  NLM     Status:  MEDLINE    
The objective of this study was to evaluate the accuracy of the magnetic induction technique with a nonlinear tunable oscillator (the Tissue Resonance Interaction Method [TRIMprob]) in the diagnosis of prostate cancer (CaP). Overall, 148 men were split into two groups (patients at risk of CaP [Group 1] and controls [Group 2]) and evaluated with the TRIMprob. Group 1 consisted of 100 patients (mean age: 63.8 +/- 7.2 years) with elevated prostate-specific antigen (>4 ng/mL) levels and/or abnormal digital rectal examination. Eleven patients (Group 2a, mean age: 59.5 +/- 7.3) with previously biopsy-proven CaP served as positive controls. In addition, 37 voluntary men (Group 2b, mean age: 39.8 +/- 10.4) with normal prostate-specific antigen and digital rectal examination without lower urinary tract symptoms served as negative controls. Non-linear resonance was analyzed at 465 MHz and a cut-off value of 40 units was detected as the resonance value for the best threshold to distinguish benign conditions from CaP after transrectal ultrasonography-guided biopsy with a standard 10-12 core technique in Group 1. Mean resonance values (+/-standard deviation) with the TRIMprob examination for patients in Groups 1 and 2b were 36.72 +/- 22.35 and 73.64 +/- 10.06, respectively, whereas for patients in Group 2a, it was 13.73 +/- 12.12 (P < 0.01). Sensitivity, specificity, positive and negative predictive values of the TRIMprob using the study cohort of Group 1 were found as 76%, 61.3%, 39.6% and 88.5%, respectively. Despite some technical limitations, the non-invasive TRIMprob examination may have a role in screening protocols for CaP.
Ozgur Gokce; Oner Sanli; Artur Salmaslioglu; Atadan Tunaci; Cavit Ozsoy; Faruk Ozcan
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Publication Detail:
Type:  Journal Article     Date:  2009-05-12
Journal Detail:
Title:  International journal of urology : official journal of the Japanese Urological Association     Volume:  16     ISSN:  1442-2042     ISO Abbreviation:  Int. J. Urol.     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-03     Completed Date:  2009-10-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9440237     Medline TA:  Int J Urol     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  580-3     Citation Subset:  IM    
Department of Urology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey.
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MeSH Terms
Biopsy, Needle
Electromagnetic Fields*
Mass Screening
Middle Aged
Prostate / pathology*
Prostate-Specific Antigen / blood
Prostatic Neoplasms / blood,  pathology*
Sensitivity and Specificity
Reg. No./Substance:
EC Antigen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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