title: Diagnosis and Treatment of Small Bowel Cancers Using Radioactive Gold Nanoparticles and Wireless Fluorescence Capsule Endoscopy.
abstract: BACKGROUND
  Therapeutic and diagnosis properties of radioactive gold nanoparticle (198-AuNPs) cause them to be suitable for detection and treatment of tumors.
  
  
  OBJECTIVE
  Electrical and optical properties of PEG-198AuNPs were examined in this paper. Polyethylene Glycol (PEG)-198 AuNPs can be used for treatment and diagnosis of small intestine tumors.
  
  
  METHODS
  Wireless fluorescence capsule endoscopy will be able to detect emission lights of triggered Au by external light. First, the output electrical field was calculated by DDSCAT software. Secondly, tumor and distribution of PEG-198 gold nanoparticles were modeled using Monte Carlo simulation and finally dose delivered throughout a solid tumor when the PEG-198 gold nanoparticles linked to each cell was calculated.
  
  
  RESULTS
  Polyethylene Glycol functionalized gold nanoparticles (AuNPs) possess optimized sizes (30 nm core diameter and 70 nm hydrodynamic diameters) to target individual tumor cells. Surface distribution to receive doses of up to 50Gy was simulated.  Activities and absorbed doses by the tumors with 0.25cm and 0.5cm radius were 187.9mCi and 300mCi and 72 and 118 Gy,respectively.
  
  
  CONCLUSIONS
  Therapeutic and diagnosis properties of 198-AuNPs show that it can be used for treatment and detection of small bowel tumors in early stage of growing.
authors.affiliation: Department of Bioengineering, Temple University, Philadelphia, USA.
authors.forename: M
authors.initials: M
authors.lastname: Alizadeh
authors.affiliation: Department of Electrical Engineering, University of Texas at Dallas, Dallas, USA.
authors.forename: V
authors.initials: V
authors.lastname: Qaradaghi
keywords: Dose; Polyethylene glycol; Radioactive gold nanoparticle; Small intestine; Wireless fluorescence capsule endoscopy; activity