Publications by authors named "Yusuf Kenan Cetinoglu"
Purpose: To develop an end-to-end DL model for automated classification of affected territory in DWI of stroke patients.
Materials And Methods: In this retrospective multicenter study, brain DWI studies from January 2017 to April 2020 from Center 1, from June 2020 to December 2020 from Center 2, and from November 2019 to April 2020 from Center 3 were included. Four radiologists labeled images into five classes: anterior cerebral artery (ACA), middle cerebral artery (MCA), posterior circulation (PC), and watershed (WS) regions, as well as normal images.
Our primary aim with this study was to build a patient-level classifier for stroke territory in DWI using AI to facilitate fast triage of stroke to a dedicated stroke center. A retrospective collection of DWI images of 271 and 122 consecutive acute ischemic stroke patients from two centers was carried out. Pretrained MobileNetV2 and EfficientNetB0 architectures were used to classify territorial subtypes as middle cerebral artery, posterior circulation, or watershed infarcts along with normal slices.
View Article and Find Full Text PDFPurpose: To build a stroke territory classifier model in DWI by designing the problem as a multiclass segmentation task by defining each stroke territory as distinct segmentation targets and leveraging the guidance of voxel wise dense predictions.
Materials And Methods: Retrospective analysis of DWI images of 218 consecutive acute anterior or posterior ischemic stroke patients examined between January 2017 to April 2020 in a single center was carried out. Each stroke area was defined as distinct segmentation target with different class labels.
Article Synopsis
- The study investigates the effectiveness of two brain tumor perfusion MRI techniques: dynamic susceptibility contrast-enhanced (DSC) and arterial spin labeling (ASL), focusing on their qualitative and quantitative diagnostic capabilities.
- A total of 90 patients treated for malignant brain tumors were analyzed, with imaged perfusion data being categorized into treatment-related changes or relapse/residual mass.
- Results show that DSC and ASL values are generally higher in relapse cases than in treatment-related changes, with strong correlations between the techniques, indicating potential overlapping effectiveness in diagnosis.
Article Synopsis
- Vertebral compression fractures (VCF) often occur at the thoracolumbar junction (TLJ), and balloon kyphoplasty (BKP) is an effective treatment for bone remodeling in these cases.* -
- A study involving 31 patients evaluated how factors like timing of surgery, age, sex, and body mass index (BMI) affect outcomes such as vertebral height and spinal angles after BKP.* -
- Results show that early surgery leads to better recovery in vertebral heights, older patients experience more significant angle reduction, and those with a higher BMI have lower local kyphotic angles post-surgery.*
Article Synopsis
- The study aimed to evaluate the effectiveness of convolutional neural networks (CNNs) in quickly detecting strokes and classifying their vascular territory using diffusion-weighted images (DWI).
- Researchers created custom datasets from DWI images of 421 cases, including both stroke patients and healthy individuals, for training and testing the CNN models.
- Results showed that modified MobileNetV2 and EfficientNet-B0 models achieved high accuracy in detecting strokes (96% and 93%, respectively) and classifying them into specific types (middle cerebral artery or posterior circulation) with effectiveness around 93% and 87%.
Purpose: To investigate the association between the knee joint anatomical variations and pathologies, and to describe the quadriceps patellar tendon angle (QPA).
Methods: MRIs of 406 cases with a lateral patellar tilt angle (LPT)>5° and a control group of 40 cases with an LPT<5° were retrospectively evaluated. QPA, LPT, trochlear sulcus angle (TSA), tibial tubercle-trochlear groove distance (TT-TG), Insall-Salvati index (ISI), patellar tendon length (PTL), patellar height (PH), lateral trochlear inclination (LTI), trochlear facet asymmetry ratio (TFA) and trochlear depth (TD) were measured.
Article Synopsis
- Tendinosis in the common extensor tendon can show additional abnormalities through MRI, including ligament and bone issues.
- A study on 56 patients with lateral overuse syndrome found that as the injury severity of the common extensor tendon (CET) increased, so did damage to associated ligaments (LUCL and RCL) and joint effusion.
- The research suggests that evaluating the radiohumeral (RH) plica is important for diagnosing mild CET injuries, although no significant correlation was found between CET severity and certain RH plica characteristics.
Background: Wandering spleen (WS) is a rare clinical condition which may cause fatal complication like torsion with subsequent infarction. Determination of splenic parenchyma viability is very important in deciding whether splenopexy rather than splenectomy is an option. Contrast- enhanced computed tomography (CECT) is important for the diagnosis of WS and assessment of the viability of spleen.
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