Publications by authors named "Serhat Kaya"

14 Publications

  • Page 1 of 1

Intracranial dermoid cyst mimicking a thrombosed giant aneurysm of the anterior communicating artery.

Br J Hosp Med (Lond) 2022 06 3;83(6). Epub 2022 Jun 3.

Department of Radiology, Medical Faculty, Ataturk University, Erzurum, Turkey.

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http://dx.doi.org/10.12968/hmed.2021.0623DOI Listing
June 2022

Is it Cyst or Neoplasm? The Role of Thorax Magnetic Resonance Imaging.

Arch Bronconeumol 2021 12 1;57(12):769. Epub 2021 Dec 1.

Department of Pulmonary Diseases, Ataturk University School of Medicine, 25240 Erzurum, Turkey. Electronic address:

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http://dx.doi.org/10.1016/j.arbr.2020.05.018DOI Listing
December 2021

The Potential Error on the Honeydew Honey Identifications.

Integr Cancer Ther 2022 Jan-Dec;21:15347354221096809

Department of Pediatrics, Faculty of Medicine, Çanakkale Onsekiz Mart University, Çanakkale, Turkey.

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http://dx.doi.org/10.1177/15347354221096809DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9121444PMC
May 2022

InSiNet: a deep convolutional approach to skin cancer detection and segmentation.

Med Biol Eng Comput 2022 Mar 13;60(3):643-662. Epub 2022 Jan 13.

Department of Geomatics Engineering, Gumushane University, Gumushane, Turkey.

Cancer is among the common causes of death around the world. Skin cancer is one of the most lethal types of cancer. Early diagnosis and treatment are vital in skin cancer. In addition to traditional methods, method such as deep learning is frequently used to diagnose and classify the disease. Expert experience plays a major role in diagnosing skin cancer. Therefore, for more reliable results in the diagnosis of skin lesions, deep learning algorithms can help in the correct diagnosis. In this study, we propose InSiNet, a deep learning-based convolutional neural network to detect benign and malignant lesions. The performance of the method is tested on International Skin Imaging Collaboration HAM10000 images (ISIC 2018), ISIC 2019, and ISIC 2020, under the same conditions. The computation time and accuracy comparison analysis was performed between the proposed algorithm and other machine learning techniques (GoogleNet, DenseNet-201, ResNet152V2, EfficientNetB0, RBF-support vector machine, logistic regression, and random forest). The results show that the developed InSiNet architecture outperforms the other methods achieving an accuracy of 94.59%, 91.89%, and 90.54% in ISIC 2018, 2019, and 2020 datasets, respectively. Since the deep learning algorithms eliminate the human factor during diagnosis, they can give reliable results in addition to traditional methods.
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http://dx.doi.org/10.1007/s11517-021-02473-0DOI Listing
March 2022

Spinning top urethra.

Br J Hosp Med (Lond) 2021 Oct 14;82(10). Epub 2021 Oct 14.

Department of Radiology, Medical Faculty, Ataturk University, Erzurum, Turkey.

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http://dx.doi.org/10.12968/hmed.2021.0223DOI Listing
October 2021

Immunosuppressive influence of parasitoid wasp calyx fluid on host cell-mediated immune response and hemocyte viability.

Bull Entomol Res 2021 Oct 8:1-9. Epub 2021 Oct 8.

Department of Biology, Faculty of Arts and Sciences, Balikesir University, Balikesir, Turkey.

Endoparasitoid species devoid of symbiotic viruses inject secretions derived from their reproductive glands into their hosts during parasitism in order to avoid various immune responses of their hosts. Pimpla turionellae L. (Hymenoptera: Ichneumonidae) is an endoparasitoid that lacks polydnaviruses, and its venom has previously been shown to paralyze the host Galleria mellonella (Lepidoptera: Pyralidae) and suppress its immune reactions to ensure the egg survival. The present study demonstrates that another female-injected factor calyx fluid extracted from the P. turionellae ovary is also responsible for the suppression of G. mellonella immunity. The total hemocyte counts of G. mellonella decrease after treatment with calyx fluid in a concentration-dependent manner. Significant reductions in cell viability are also observed at all calyx fluid doses both in vivo and in vitro. The analyses of the beads injected into the insects as encapsulation targets revealed that the number of encapsulated beads reduced significantly compared to controls post-calyx fluid injection. The injection of the highest calyx fluid dose (1 female equivalent calyx) is sufficient to completely inhibit the strong encapsulation and melanization reactions of the last instar larvae 24 h post-injection. These results demonstrate that P. turionellae calyx fluid is required to regulate host immunity for successful parasitization.
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http://dx.doi.org/10.1017/S0007485321000924DOI Listing
October 2021

A rare cause of radiculopathy: facet joint synovial cyst protruding into the spinal canal.

Br J Hosp Med (Lond) 2021 Sep 6;82(9). Epub 2021 Sep 6.

Department of Radiology, Atatürk University School of Medicine, Erzurum, Turkey.

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http://dx.doi.org/10.12968/hmed.2021.0144DOI Listing
September 2021

Is it Cyst or Neoplasm? The Role of Thorax Magnetic Resonance Imaging.

Arch Bronconeumol (Engl Ed) 2020 Jun 20. Epub 2020 Jun 20.

Department of Pulmonary Diseases, Ataturk University School of Medicine, 25240 Erzurum, Turkey. Electronic address:

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http://dx.doi.org/10.1016/j.arbres.2020.05.029DOI Listing
June 2020

MR arthrographic evaluation of posterior paraglenoid labral cysts: a retrospective study.

Acta Radiol 2020 Jun 25;61(6):789-795. Epub 2019 Oct 25.

Department of Radiology, Medical Faculty, Ataturk University, Erzurum, Turkey.

Background: Paraglenoid labral cysts (PLCs) around the shoulder are uncommon. Magnetic resonance imaging (MRI) is the primary imaging modality for the description of PLCs.

Purpose: The purpose of this study was to evaluate PLCs in the posterior part of the glenoid bone via MR arthrography as well as to describe associated labral abnormalities.

Material And Methods: This retrospective study included 14 patients, diagnosed with 15 posterior PLCs at MR arthrography between 2007 and 2012. Conventional MRI and MR arthrography were used for all patients.

Results: A total of 15 PLCs were detected in 14 patients with eight located on the right shoulder and six on the left shoulder. One case had two PLCs. While two cysts were multiloculated, the remaining 13 were seen as unilocated simple cysts. Moreover, 14 of 15 posterior PLCs (60%) were associated with labral tears at MR arthrography. The cysts in proximity to the glenoid labrum were posterosuperior in 33.3% (n = 5), mid-posterior in 36.7% (n = 7), and postero-inferior in 20% (n = 3). The majority of patients with posterosuperior and mid-posterior cysts had an associated superior labral tear from anterior to posterior (SLAP) lesions. Four of six patients with mid-posterior cysts had minimal denervation atrophy in the infraspinatus muscle.

Conclusion: Posterior PLCs are mostly associated with posterior labral defects. The majority of cysts localized in the posterosuperior and mid-posterior were also associated with SLAP lesions. Denervation atrophy in the infraspinatus muscle may frequently accompany mid-posterior PLCs.
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http://dx.doi.org/10.1177/0284185119883389DOI Listing
June 2020

An Ancillary Sign in the Diagnosis of Bankart and Bankart Variants in Patients With Glenohumeral Instability on Nonarthrographic Magnetic Resonance Imaging: Preglenoid Fat Thickness.

J Comput Assist Tomogr 2019 May/Jun;43(3):367-371

Department of Orthopedic, Medical Faculty, Ataturk University, Erzurum, Turkey.

Objective: We investigated whether preglenoid fat thickness can be used as an ancillary sign for preliminary diagnosis of Bankart and its variants on nonarthrographic magnetic resonance imaging.

Materials And Methods: Sixty-eight anterior dislocation patients were included in this retrospective study. Forty-eight patients with Bankart and its variants, as detected by arthroscopy and magnetic resonance arthrography, were included in the study group. The study group was divided into osseous Bankart, labral Bankart, Perthes, and anterior labroligamentous periosteal sleeve avulsion subgroups. Twenty patients with no detected labral pathologies by arthroscopy and magnetic resonance arthrography were included in the control group. In these patients, preglenoid fat tissue thickness at the anteroinferior portion was measured at the level of the glenoid tubercle. Thickness of preglenoid fat tissue was compared between groups with different labral pathologies and those with normal labrum.

Results: The preglenoid fat tissue thickness was 2.65 ± 1.05 mm in the control group and 0.90 ± 0.59 mm in the study group (P < 0.0001). Patients with preglenoid fat tissue thinner than 1.6 mm showed a significantly increased likelihood of having Bankart and its variants in receiver operating characteristic analysis (sensitivity of 95.8% and specificity of 85%). There was no significant difference in preglenoid fat tissue thickness between the subgroups of the study group (osseous Bankart, labral Bankart, Perthes, and anterior labroligamentous periosteal sleeve avulsion).

Conclusion: Preglenoid fat tissue measurement can be used as an ancillary sign in the diagnosis of Bankart and Bankart variants in glenohumeral instability patients.
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http://dx.doi.org/10.1097/RCT.0000000000000856DOI Listing
June 2019

Efficacy of the Rotational Traction Method in the Assessment of Glenohumeral Cartilage Surface Area in Computed Tomography Arthrography.

J Comput Assist Tomogr 2019 Mar/Apr;43(2):345-349

Department of Orthopedics and Traumatology, Medical Faculty, Ataturk University, Erzurum, Turkey.

Objective: We aimed to investigate the efficacy of the rotational traction method in expanding the joint space and enabling the assessment of an extended surface area.

Methods: Sixty patients who underwent computed tomography arthrography were evaluated in the study: 30 with and 30 without the help of rotational traction. The subgroups consisted of patients with adhesive capsulitis, habitual luxation, or labral tears. Areas of obscured joint surface by coalescent cartilages were calculated using computer software, and those belonging to the traction and nontraction groups along with subgroups were compared statistically.

Results: There was a significant difference between the traction and nontraction group regarding the contact surface area (P < 0.001 for both observers). In patients with adhesive capsulitis, the contact surface area was larger compared with the other subgroups (P = 0.002 for observer 1 and P = 0.002 for observer 2). In patients with habitual luxation, the contact surface area was smaller compared with the other subgroups (P = 0.002 for observer 1 and P = 0.001 for observer 2).

Conclusions: Expansion of joint distance is important for assessing the joint cartilage. The rotational traction method provides effective separation of the joint space. For this reason, rotational traction can be used effectively in patients in whom the joint cartilage is to be evaluated.
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http://dx.doi.org/10.1097/RCT.0000000000000809DOI Listing
April 2019

Multisystem Involvement of Hydatid Disease.

Am J Trop Med Hyg 2018 06;98(6):1557

Department of Radiology, Faculty of Medicine, Ataturk University, Erzurum, Turkey.

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http://dx.doi.org/10.4269/ajtmh.17-0995DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6086144PMC
June 2018

Transient Splenial Lesion of the Corpus Callosum After Cabergoline Treatment.

World Neurosurg 2018 Jun 31;114:257-258. Epub 2018 Mar 31.

Department of Biochemistry, Erzurum Training and Research Hospital, Erzurum, Turkey.

Background: Transient splenial lesion of the corpus callosum is an oval-shaped lesion in the center of the splenium of the corpus callosum. The disease characteristically occurs with restricted diffusion-weighted images.

Case Description: In the present study, we describe the magnetic resonance imaging findings of a patient with transient diffusion restriction in the splenium of the corpus callosum after cabergoline therapy.

Conclusions: Cabergoline may be an unusual cause of transient splenial lesion of corpus callosum.
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http://dx.doi.org/10.1016/j.wneu.2018.03.166DOI Listing
June 2018

An analysis of beam parameters on proton-acoustic waves through an analytic approach.

Phys Med Biol 2017 Jun 2;62(12):4694-4710. Epub 2017 Mar 2.

Department of Physics, Bogazici University, 34342 Bebek, Istanbul, Turkey.

It has been reported that acoustic waves are generated when a high-energy pulsed proton beam is deposited in a small volume within tissue. One possible application of proton-induced acoustics is to get real-time feedback for intra-treatment adjustments by monitoring such acoustic waves. A high spatial resolution in ultrasound imaging may reduce proton range uncertainty. Thus, it is crucial to understand the dependence of the acoustic waves on the proton beam characteristics. In this manuscript, firstly, an analytic solution for the proton-induced acoustic wave is presented to reveal the dependence of the signal on the beam parameters; then it is combined with an analytic approximation of the Bragg curve. The influence of the beam energy, pulse duration and beam diameter variation on the acoustic waveform are investigated. Further analysis is performed regarding the Fourier decomposition of the proton-acoustic signals. Our results show that the smaller spill time of the proton beam upsurges the amplitude of the acoustic wave for a constant number of protons, which is hence beneficial for dose monitoring. The increase in the energy of each individual proton in the beam leads to the spatial broadening of the Bragg curve, which also yields acoustic waves of greater amplitude. The pulse duration and the beam width of the proton beam do not affect the central frequency of the acoustic wave, but they change the amplitude of the spectral components.
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http://dx.doi.org/10.1088/1361-6560/aa642cDOI Listing
June 2017
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