Person: SÖNMEZ, ÖZCAN
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
SÖNMEZ
First Name
ÖZCAN
Name
3 results
Search Results
Now showing 1 - 3 of 3
Publication Open Access A new method for quantification of frontal retrusion and complex skull shape in metopic craniosynostosis: a pilot study of a new outcome measure for endoscopic strip craniectomy(2022-06-01) SAÇAK, BÜLENT; ERDOĞAN, ONUR; BAYRİ, YAŞAR; DAĞÇINAR, ADNAN; SAKAR, MUSTAFA; SÖNMEZ, ÖZCAN; SAKAR M., Haidar H., SÖNMEZ Ö., ERDOĞAN O., SAÇAK B., BAYRİ Y., DAĞÇINAR A.OBJECTIVE The objective of this study was to propose a new skull outline–based method to objectively quantify complex 3D skull shapes and frontal and supraorbital retrusion in metopic craniosynostosis using 3D photogrammetry. METHODS A standard section from 3D photogrammetry, which represents the trigonocephalic shape, was used in this study. From the midpoint of the area of this section, half diagonals were calculated to the skull outline at 5° increments in the anterior half of the head. These half diagonals were used to create a sinusoidal curve, and the area under the sinusoidal curve (AUC) was used to represent the mathematical expression of the trigonocephalic head shape. The AUC from 0° to 180° (90° from the midline to each side) was calculated and is referred to as AUC0→180. The AUC from 60° to 120° (30° from the midline to each side) was also calculated and is referred to as AUC60→120. A total of 24 patients who underwent endoscopic strip craniectomy and 13 age- and sex-matched controls were included in the study. The AUC values obtained in patients at different time points and controls were analyzed. RESULTS The mean preoperative AUC60→120 and AUC0→180 in the patients were significantly lower than those in control individuals. The increase in both AUC60→120 and AUC0→180 values is statistically significant at the discontinuation of helmet therapy and at final follow-up. Receiver operating characteristic curve analysis indicated that AUC60→120 is a more accurate classifier than AUC0→180. CONCLUSIONS The proposed method objectively quantifies complex head shape and frontal retrusion in patients with metopic craniosynostosis and provides a quantitative measure for follow-up after surgical treatment. It avoids ionizing radiation exposurePublication Metadata only Pediatrik dev torakolumbosakral araknoid kiste bağlı kord herniasyonu olgusu(2021-10-31) OĞLİN, VOLKAN; BAYRİ, YAŞAR; DAĞÇINAR, ADNAN; ŞİMŞEK, İSMAİL; SAKAR, MUSTAFA; SÖNMEZ, ÖZCAN; Şimşek I., Oğlin V., Sönmez Ö., Sakar M., Bayri Y., Dağçinar A.Araknoid kistler; araknoid membranın altında oluşan selim, neoplazi içermeyen, içi sıvı dolu yapılardır. Bu kistler genellikle insidental olarakgörüntülemeler sırasında saptanır ve belirti vermedikçe tedavi edilmeleri gerekmez. Semptomatik olduklarındaysa; valsalva manevralarıylaartabilen sırt ve bel ağrısı, radiküler ağrı veya kronik miyelopati gibi bulgu ve belirtilere sebep olabilirler (4).Pediatrik yaşta daha sık görülen araknoid kistler, genellikle konjenitaldir (1). Spinal araknoid kistler dahaçok torakal seviyelerde ve vertebranın dorsalinde konumlanırlar. Ortalama üç vertebra uzunluğundadırlar veT3-T6 seviyeleri arasında daha sık görülürler (5). Dev araknoid kistler nadirdir ve bugüne kadar literatürde çokaz sayıda vaka bildirilmiştir (3,6). Çalışmamızdaki amacımız kliniğimizde tedavi edilmiş dev araknoid kist olgusunun yönetimini sunmaktırPublication Metadata only DBS reimplantation to opposite side as a treatment for DBS-withdrawal syndrome(2022-09-05) SÖNMEZ, ÖZCAN; ÖMERCİKOĞLU ÖZDEN, HATİCE; GÜNAL, DİLEK; BAYRAKLI, FATİH; Sönmez Ö., Ömercikoğlu Özden H., Günal D., Bayraklı F.Objectives: STN-DBS treatment has been effective on motor Parkinson’s Disease symptoms also improvement in motor symptoms ve been shown to be better than medical therapy at an earlier stage of the disease. When STN-DBS treatment is interrupted rare but lifethreatening complication occur known as DBS-withdrawal syndrome. Akinesia, rigidity, dysarthria, dysphagia, and autonomic instability seen in DBS-withdrawal syndrome and ICU setting is necessary. In the light of current knowledge, as soon as possible STN-DBS reimplantation surgery has been shown best treatment for this rare but life-threatening condition. Methods: 33-year-old male, diagnosed with Parkinson\"s disease 10 years ago and started to take bilateral STN-DBS therapy. Had two other operation both due to infected infraclavicular IPG. The cause of the frequent infection was thought to be the patient\"s scratching obsession. After 8 months of the last surgery, the patient was admitted to our clinic with purulent discharge from the IPG pocket extension but not seen any sign of infection. UPDRS-III was 63 points. IPG generator and extension were cut below the connection between lead and IPG cables so that lead tips were preserved from surrounding tissue. After surgery, the patient developed DBS-withdrawal symptoms like akinesia, aphagia, rigidity, and dysarthria, UPDRS-III score rose to 102 points. Levadopa treatment rose to 750 mg but no improvement was seen. Another surgery was planned for the patient because clinical symptoms did not improve. In surgery former cranial and postauricular incisions were combined and reached leads. Leads were dissected from surrounding tissue, from postauricular incision to burr holes until they moved freely. After that new IPG pocket was prepared in the contralateral infraclavicular area and leads and IPG cables were connected. Results: After surgery, the system switched on, and system values and medication were rearranged. The patient’s clinal symptoms improved quickly. On the seventh day after the operation, the patient was discharged when UPDRS-III score was 72 points. Conclusions: Although a limited number of cases have been reported in the literature, we will face this medical emergency more frequently with the increasing use of STN-DBS. In our solution, this life-threatening emergency was resolved by moving the leads to the opposite side.