RGB(Red- Green-Blue) Measurement of the Nasal Mucosal Image
Condition: Allergic Rhinitis
MeSH terms: Rhinitis; Rhinitis, Allergic
Study type: Observational

Summary: 
      The aim of this study was to evaluate the color values of the nasal mucosa, which is easily
      assessable by a direct, non-invasive, objective photographic measurement, for the purpose of
      presenting a diagnostic objective parameter of allergic rhinitis (AR).

      All patients and controls were examined by the same 4 mm 0⁰endoscope and light source, and
      all endoscopic photographs of the septum and both inferior turbinates were taken. Adobe
      Photoshop Elements 7.0 program was used to measure the numerical values of the red-green-blue
      (RGB) color components in endoscopic photographs of the nasal mucosa on the septum and
      inferior turbinates.
    

Detailed description: 
      This study enrolled 73 patients with AR (Group 1) and 73 normal healthy individuals(Group 2)
      with no nasal pathologies and respiratory tract infection attending to the outpatient clinic
      of the tertiary referral center. Patient's symptoms were questioned and noted by using Lebel
      Symptom Score Scale. Clinical examination was also done to help diagnose and exclude acute
      respiratory tract infection. All of the patients had positive skin prick test results for at
      least one of the most common aeroallergens. All patients and controls were examined by the
      same 4 mm 0⁰endoscope and light source, and all endoscopic photographs of the septum and both
      inferior turbinates were taken. Each image was marked with standardized points at the
      anterior part of the nasal mucosa on both sides (2 points each right and left sides of the
      anterior septum and 2 points each anterior part of the inferior turbinates). These points
      were numbered 1 and 2 over the right inferior turbinate; 3 and 4 over the right side of the
      anterior septum; 4 and 5 over the left inferior turbinate; 6 and 7 over the left side of the
      anterior septum. Adobe Photoshop Elements 7.0 program was used to measure the numerical
      values of the red-green-blue color components in endoscopic photographs of the nasal mucosa
      on the septum and inferior turbinates.
    

Intervention name(s): Red-green-blue measurements of nasal mucosa image
Intervention type(s): Other
Intervention description(s): Adobe Photoshop Elements 7.0 program automatically measures the numerical values of the RGB color components in the selected area
Observational model: Case-Control
Time perspective: Cross-Sectional
Sampling method: Probability Sample
Study population: 
        This study enrolled 73 patients with allergic rhinitis (Group 1) and 73 normal healthy
        individuals(Group 2) with no nasal pathologies and respiratory tract infection attending to
        the outpatient clinic of the tertiary referral center. Patient's symptoms were questioned
        and noted by using Lebel Symptom Score Scale. Clinical examination was also done to help
        diagnose and exclude acute respiratory tract infection. All of the patients had positive
        skin prick test results for at least one of the most common aeroallergens.
      
Keywords: RGB; red-green-blue; rhinitis; allergic rhinitis; nasal mucosa