Estimation of Population Number via Light Activities
On Night-Time Satellite Images

Turan, Muhammed Kamil; Yücer, Emre; Sehirli, Eftal; Karaş, İsmail Rakıp

doi:10.5194/isprs-archives-xlii-4-w6-103-2017

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…The obtained value was assigned as the threshold value. 10 , 11 Lung images were converted to binary images using all possible threshold values. Then, all binary images were added on themselves.…”

Section: Methodsmentioning

confidence: 99%

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Comparison of pirfenidone and corticosteroid treatments at the COVID‐19 pneumonia with the guide of artificial intelligence supported thoracic computed tomography

Acat

Gülhan

Öner

et al. 2021

Int J Clinical Practice

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Aim We aimed to investigate the effect of short‐term pirfenidone treatment on prolonged COVID‐19 pneumonia. Method Hospital files of patients hospitalised with a diagnosis of critical COVID‐19 pneumonia from November 2020 to March 2021 were retrospectively reviewed. Chest computed tomography images taken both before treatment and 2 months after treatment, demographic characteristics and laboratory parameters of patients receiving pirfenidone + methylprednisolone (n = 13) and only methylprednisolones (n = 9) were recorded. Pulmonary function tests were performed after the second month of the treatment. CT involvement rates were determined by machine learning. Results A total of 22 patients, 13 of whom (59.1%) were using methylprednisolone + pirfenidone and 9 of whom (40.9%) were using only methylprednisolone were included. When the blood gas parameters and pulmonary function tests of the patients were compared at the end of the second month, it was found that the FEV1, FEV1%, FVC and FVC% values were statistically significantly higher in the methylprednisolone + pirfenidone group compared with the methylprednisolone group ( P = .025, P = .012, P = .026 and P = .017, respectively). When the rates of change in CT scans at diagnosis and second month of treatment were examined, it was found that the involvement rates in the methylprednisolone + pirfenidone group were statistically significantly decreased ( P < .001). Conclusion Antifibrotic agents can reduce fibrosis that may develop in the future. These can also help dose reduction and/or non‐use strategy for methylprednisolone therapy, which has many side effects. Further large series and randomised controlled studies are needed on this subject.

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Section: Methodsmentioning

confidence: 99%

“…The mean of sequential two‐pixel values on the lines were taken until only one value was obtained. The obtained value was assigned as the threshold value 10,11 . Lung images were converted to binary images using all possible threshold values.…”

Section: Methodsmentioning

confidence: 99%

Comparison of pirfenidone and corticosteroid treatments at the COVID‐19 pneumonia with the guide of artificial intelligence supported thoracic computed tomography

Acat

Gülhan

Öner

et al. 2021

Int J Clinical Practice

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Popliteal Artery Branching Variations: A Study on Multidetector CT Angiography

Öner

2020

Sci Rep

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Determining the branching pattern of the popliteal artery (PA) is an important step in planning some radiological and surgical procedures. The aim of this study was to investigate the course and morphology of the terminal branches of the popliteal artery using multidetector computed tomography (MDCT) angiography, and also to determine possible role gender in branching pattern. Three-hundred forty lower extremity MDCT angiography images for 170 patients (118 M, 52 F), who were between 20–80 years old, were examined. Popliteal artery branching types were grouped as percentage incidences. TPT diameters and lengths in Type IA extremities were compared based on gender and right or left side. Anterior tibial artery (ATA), posterior tibial artery (PTA) and peroneal artery dominance rates were calculated. 5000 times measurement data was mixed so that the cascade mean filter values were calculated for the right and left TPT length each time. It was observed that Type IA was the most common branching pattern (89.4%). The variational pattern incidence was 10.6% and the most common category was Type III (4.1%). The most common pattern was Type IB (3.2%). Variational pattern was 2 times more prevalent in females when compared to the males. The mean TPT diameter was 4.5 mm (2.7–7.3 mm) and there was no difference based on gender and the right-left side. The most common dominant artery for the right and left legs was PTA in both genders. The cut-off values calculated for the right and left TPT independent of gender were 31.30 ± 2.40 and 28.36 ± 2.58, respectively. Three new subtypes were identified as short (S ≤ 2 cm), standard (N = 2–4 cm) and long (L ≥ 4 cm) in Type IA, since it is in a wide variational range although it is a typical PA branching pattern.

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Estimation of Population Number via Light Activities On Night-Time Satellite Images

Cited by 2 publications

References 11 publications

Comparison of pirfenidone and corticosteroid treatments at the COVID‐19 pneumonia with the guide of artificial intelligence supported thoracic computed tomography

Comparison of pirfenidone and corticosteroid treatments at the COVID‐19 pneumonia with the guide of artificial intelligence supported thoracic computed tomography

Popliteal Artery Branching Variations: A Study on Multidetector CT Angiography

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