A fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images
Diabetic Peripheral Neuropathy (DPN) is one of the most common types of diabetes that can affect the cornea. An accurate analysis of the nerve structures can assist the early diagnosis of this disease. This paper proposes a robust, fast and fully automatic nerve segmentation and morphometric paramet...
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Elsevier
2016
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| Online Access: | https://eprints.nottingham.ac.uk/50007/ |
| _version_ | 1848798128649535488 |
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| author | Al-Fahdawi, Shumoos Qahwaji, Rami Al-Waisy, Alaa S. Ipson, Stanley Malik, Rayaz A. Brahma, Arun Chen, Xin |
| author_facet | Al-Fahdawi, Shumoos Qahwaji, Rami Al-Waisy, Alaa S. Ipson, Stanley Malik, Rayaz A. Brahma, Arun Chen, Xin |
| author_sort | Al-Fahdawi, Shumoos |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Diabetic Peripheral Neuropathy (DPN) is one of the most common types of diabetes that can affect the cornea. An accurate analysis of the nerve structures can assist the early diagnosis of this disease. This paper proposes a robust, fast and fully automatic nerve segmentation and morphometric parameter quantification system for corneal confocal microscope images. The segmentation part consists of three main steps. First, a preprocessing step is applied to enhance the visibility of the nerves and remove noise using anisotropic diffusion filtering, specifically a Coherence filter followed by Gaussian filtering. Second, morphological operations are applied to remove unwanted objects in the input image such as epithelial cells and small nerve segments. Finally, an edge detection step is applied to detect all the nerves in the input image. In this step, an efficient algorithm for connecting discontinuous nerves is proposed. In the morphometric parameters quantification part, a number of features are extracted, including thickness, tortuosity and length of nerve, which may be used for the early diagnosis of diabetic polyneuropathy and when planning Laser-Assisted in situ Keratomileusis (LASIK) or Photorefractive keratectomy (PRK). The performance of the proposed segmentation system is evaluated against manually traced ground-truth images based on a database consisting of 498 corneal sub-basal nerve images (238 are normal and 260 are abnormal). In addition, the robustness and efficiency of the proposed system in extracting morphometric features with clinical utility was evaluated in 919 images taken from healthy subjects and diabetic patients with and without neuropathy. We demonstrate rapid (13 seconds/image), robust and effective automated corneal nerve quantification. The proposed system will be deployed as a useful clinical tool to support the expertise of ophthalmologists and save the clinician time in a busy clinical setting. |
| first_indexed | 2025-11-14T20:14:51Z |
| format | Article |
| id | nottingham-50007 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:14:51Z |
| publishDate | 2016 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-500072020-05-04T20:00:28Z https://eprints.nottingham.ac.uk/50007/ A fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images Al-Fahdawi, Shumoos Qahwaji, Rami Al-Waisy, Alaa S. Ipson, Stanley Malik, Rayaz A. Brahma, Arun Chen, Xin Diabetic Peripheral Neuropathy (DPN) is one of the most common types of diabetes that can affect the cornea. An accurate analysis of the nerve structures can assist the early diagnosis of this disease. This paper proposes a robust, fast and fully automatic nerve segmentation and morphometric parameter quantification system for corneal confocal microscope images. The segmentation part consists of three main steps. First, a preprocessing step is applied to enhance the visibility of the nerves and remove noise using anisotropic diffusion filtering, specifically a Coherence filter followed by Gaussian filtering. Second, morphological operations are applied to remove unwanted objects in the input image such as epithelial cells and small nerve segments. Finally, an edge detection step is applied to detect all the nerves in the input image. In this step, an efficient algorithm for connecting discontinuous nerves is proposed. In the morphometric parameters quantification part, a number of features are extracted, including thickness, tortuosity and length of nerve, which may be used for the early diagnosis of diabetic polyneuropathy and when planning Laser-Assisted in situ Keratomileusis (LASIK) or Photorefractive keratectomy (PRK). The performance of the proposed segmentation system is evaluated against manually traced ground-truth images based on a database consisting of 498 corneal sub-basal nerve images (238 are normal and 260 are abnormal). In addition, the robustness and efficiency of the proposed system in extracting morphometric features with clinical utility was evaluated in 919 images taken from healthy subjects and diabetic patients with and without neuropathy. We demonstrate rapid (13 seconds/image), robust and effective automated corneal nerve quantification. The proposed system will be deployed as a useful clinical tool to support the expertise of ophthalmologists and save the clinician time in a busy clinical setting. Elsevier 2016-10 Article PeerReviewed Al-Fahdawi, Shumoos, Qahwaji, Rami, Al-Waisy, Alaa S., Ipson, Stanley, Malik, Rayaz A., Brahma, Arun and Chen, Xin (2016) A fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images. Computer Methods and Programs in Biomedicine, 135 . pp. 151-166. ISSN 1872-7565 Diabetes; Diabetic peripheral neuropathy; Corneal confocal microscopy; Corneal subbasal epithelium; Automatic nerve segmentation; Anisotropic diffusion filtering https://www.sciencedirect.com/science/article/pii/S0169260716301754 doi:10.1016/j.cmpb.2016.07.032 doi:10.1016/j.cmpb.2016.07.032 |
| spellingShingle | Diabetes; Diabetic peripheral neuropathy; Corneal confocal microscopy; Corneal subbasal epithelium; Automatic nerve segmentation; Anisotropic diffusion filtering Al-Fahdawi, Shumoos Qahwaji, Rami Al-Waisy, Alaa S. Ipson, Stanley Malik, Rayaz A. Brahma, Arun Chen, Xin A fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images |
| title | A fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images |
| title_full | A fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images |
| title_fullStr | A fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images |
| title_full_unstemmed | A fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images |
| title_short | A fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images |
| title_sort | fully automatic nerve segmentation and morphometric parameter quantification system for early diagnosis of diabetic neuropathy in corneal images |
| topic | Diabetes; Diabetic peripheral neuropathy; Corneal confocal microscopy; Corneal subbasal epithelium; Automatic nerve segmentation; Anisotropic diffusion filtering |
| url | https://eprints.nottingham.ac.uk/50007/ https://eprints.nottingham.ac.uk/50007/ https://eprints.nottingham.ac.uk/50007/ |