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Selected Publication:
SHR Neuro Cancer Cardio Lipid Metab Microb
Strauss, RW; Krieglstein, TR; Priglinger, SG; Reis, W; Ulbig, MW; Kampik, A; Neubauer, AS.
Image quality characteristics of a novel colour scanning digital ophthalmoscope (SDO) compared with fundus photography.
Ophthalmic Physiol Opt. 2007; 27(6):611-618
Doi: 10.1111/j.1475-1313.2007.00512.x
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- Leading authors Med Uni Graz
- Strauß Rupert
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- Abstract:
- Purpose: To establish a set of quality parameters for grading image quality and apply those to evaluate the fundus image quality obtained by a new scanning digital ophthalmoscope (SDO) compared with standard slide photography. Methods: On visual analogue scales a total of eight image characteristics were defined: overall quality, contrast, colour brilliance, focus (sharpness), resolution and details, noise, artefacts and validity of clinical assessment. Grading was repeated after 4 months to assess repeatability. Fundus images of 23 patients imaged digitally by SDO and by Zeiss 450FF fundus camera using Kodak film were graded side-by-side by three graders. Lens opacity was quantified with the Interzeag Lens Opacity Meter 701. Results: For all of the eight scales of image quality, good repeatability within the graders (mean Kendall's W 0.69) was obtained after 4 months. Inter-grader agreement ranged between 0.31 and 0.66. Despite the SDO's limited nominal image resolution of 720 x 576 pixels, the Zeiss FF 450 camera performed better in only two of the subscales - noise (p = 0.001) and artefacts (p = 0.01). Lens opacities significantly influenced only the two subscales 'resolution' and 'details', which deteriorated with increasing media opacities for both imaging systems. Conclusions: Distinct scales to grade image characteristics of different origin were developed and validated. Overall SDO digital imaging was found to provide fundus pictures of a similarly high level of quality as expert photography on slides.
- Find related publications in this database (using NLM MeSH Indexing)
- Adult -
- Aged -
- Aged, 80 and over -
- Child, Preschool -
- Color -
- Diagnostic Imaging - standards
- Diagnostic Techniques, Ophthalmological - standards
- Female -
- Humans -
- Image Processing, Computer-Assisted - standards
- Male -
- Middle Aged -
- Ophthalmoscopes - standards
- Photography - standards
- Retina - pathology
- Retinal Diseases - diagnosis
- Find related publications in this database (Keywords)
- fundus photography
- image quality
- imaging