In vivo determination of prostatic zinc: phantom feasibility study

Area of Science:

• Medical Physics
• Oncology
• Biomedical Engineering

Background:

• Prostate cancer diagnosis can be improved by determining zinc levels.
• Current methods for in vivo zinc determination are limited.
• Non-invasive techniques are needed for accurate prostate tissue analysis.

Purpose of the Study:

• To assess the feasibility of an in vivo X-ray fluorescence topographic technique for determining zinc concentration in the prostate.
• To develop and validate a method for measuring zinc through rectal tissue.
• To minimize interference from non-prostatic tissues.

Main Methods:

• Development of an X-ray fluorescence (XRF) topographic technique.
• Utilizing a specialized transrectal probe for measurements.
• Implementation of a novel reconstruction method to isolate prostate zinc signals.
• Phantom-based feasibility studies were conducted.

Main Results:

• The XRF topographic technique successfully determined zinc content in a phantom prostate model.
• Measurements were feasible through a simulated 2-3 mm rectal wall layer.
• The developed reconstruction method effectively minimized interference from surrounding tissues.
• Phantom studies confirmed the potential for in vivo application.

Conclusions:

• The developed X-ray fluorescence topographic technique shows promise for non-invasive in vivo zinc determination in the prostate.
• This method, utilizing a transrectal probe, could significantly aid in the diagnosis of prostate cancer.
• Further development of the transrectal probe is underway for clinical application.