title: Preliminary study for non - invasive optical detection of squamous and basal cell carcinomas.
abstract: BACKGROUND
  The early detection of skin cancer may highly increase the chances of its healing. One of the non-invasive methods of such detection based on the Oblique- Incidence Diffuse Reflectance (OIDR) measurements of the reflected diode laser light from the skin. In this research we designed and implemented the OIDR reflectometry measuring system with a 650 nm diode laser source to aid physicians in diagnosing both squamous cell carcinomas (SCC) and basal cell carcinomas(BCC).
  
  
  METHODS
  The laser is delivered obliquely to the skin surface by an optical fiber fitted through a tube holder of CCD camera. The diffused reflected laser light from the skin is captured by the CCD camera and sent to a computer, which is supplied by a specially prepared Matlab program to analyze these images in order to decide in a time whether the lesion is malignant or benign. Fifty cases were diagnosed under supervision of the consultant section of The Governmental Specialized Marjan Teaching Hospital - MOH - Iraq.
  
  
  RESULTS
  The fifty diagnosed cases by this technique, the results were 90% accurate.
  
  
  CONCLUSIONS
  The method of laser oblique-incidence diffuse reflectance (OIDR) combined with using the developed algorithms that have high classification rates may prove useful in the clinic as the process is fast, noninvasive and accurate.
authors.affiliation: College of Engineering, Medical Engineering Department, Al-Nahrain University, Baghdad, Iraq. ahmed_mohammed381@yahoo.com
authors.forename: Ahmed Mohammed
authors.initials: AM
authors.lastname: Ali
authors.forename: Munqith Saleem
authors.initials: MS
authors.lastname: Dawood
authors.forename: Mohammed Kadhim
authors.initials: MK
authors.lastname: Taher
authors.forename: Faeza Aftan
authors.initials: FA
authors.lastname: Zghair
mesh_terms: D002280:Basal Cell Carcinoma / Q000175:diagnosis*; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis*; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation* / Q000379:methods*; D003937:Diagnosis, Differential; D006801:Humans; D007834:Lasers; D010783:Photometry / Q000295:instrumentation* / Q000379:methods; D010865:Pilot Projects; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012878:Skin Neoplasms / Q000175:diagnosis*