Tissue Resonance Interaction Method (TRIMprob) has the potential to be used alongside the recognized tests in the screening protocols for prostate cancer.
Int J Urol
; 16(6): 580-3, 2009 Jun.
Article
em En
| MEDLINE
| ID: mdl-19456986
ABSTRACT
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.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Próstata
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Neoplasias da Próstata
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Campos Eletromagnéticos
Tipo de estudo:
Diagnostic_studies
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Guideline
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Prognostic_studies
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Screening_studies
Limite:
Adult
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Aged
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article