Refika Sultan Doğan

• Ph.D.
• Research Assistant at Abdullah Gül University

For diagnosing and monitoring the progress of cancer, detection and quantification of tumor cells is utmost important. Beside standard bench top instruments, several biochip-based methods have been developed for this purpose. Our biochip design incorporates micron size immunomagnetic beads together with micropad arrays, thus requires automated dete...

Abstract: Skin cancer that spreads quickly and is deadly is called melanoma. If skin cancer is not treated in its early stages, the mortality rate is very high, but when it is correctly identified in its early stages, patients' lives can be saved. With an accurate and fast diagnosis, the patient's chance of survival can be increased. A computer-aid...

The field of histopathological image analysis has evolved significantly with the advent of digital pathology, leading to the development of automated models capable of classifying tissues and structures within diverse pathological images. Artificial intelligence algorithms, such as convolutional neural networks, have shown remarkable capabilities i...

Despite today's developing healthcare technology, conventional colonoscopy is still a gold‐standard method to detect colon abnormalities. Due to the folded structure of the intestine and visual disturbances caused by artifacts, it can be hard for specialists to detect abnormalities during the procedure. Frames that include artifacts such as specula...

Colorectal cancer is about ten percent of all cancer cases recorded worldwide and is the third most common type of cancer. Classification of medical images of colon cancer with high accuracy is one of the critical factors that determine the course of the disease. Colonoscopy is a method used for colon cancer diagnosis, and the optical and pathologi...

The existence, location and characteristics of colon polyps are determined using colonoscopy. During this procedure, biopsy and resection on the polyp are certainly performed because the malignancy risk is not clear before the examination of the specimen in the pathology department. The first aim of this study is to classify the polyp without a nee...

Determination of polyp types requires tissue biopsy during colonoscopy and then histopathological examination of the microscopic images which tremendously time-consuming and costly. The first aim of this study was to design a computer-aided diagnosis system to classify polyp types using colonoscopy images (optical biopsy) without the need for tissu...

Hepatocellular carcinoma (HCC) is the most common cause of cancer-related death in the world. The molecular changes in the organism during the development of HCC are not fully understood. The aim of the present study is to contribute to the identification of critical genes and pathways associated with HCC via integrating various bioinformatics meth...

In this paper, we present a new approach for polyp localization in colonoscopy images. This approach is based on the determination of the polyp location using the vessel density in colon images. Primarily, we used pre-processing procedures on the colon images, and then blood vessel extraction techniques were employed. Later, segmentation of the ves...