Yazar "Atasoy, Mehmet Mahir" seçeneğine göre listele

Listeleniyor 1 - 20 / 23
  • Küçük Resim Yok
    Yayın
    Accidental injection of autologous fat into the breast implant: a case report highlighting radiological findings
    (SPRINGER, 2017) Celik, Levent; Cubuk, Rahmi; Arslan, Gozde; Atasoy, Mehmet Mahir; Celik, Levent
    Autologous fat grafting is a popular technique for breast augmentation and improving breast contour depressions. It is a technique that involves using the patient's own adipose tissue to be applied on a subcutaneous area to increase total fat volume. Intraimplant fat is an unexpected finding after autologous fat grafting. A 51-year-old asymptomatic female who underwent breast augmentation with silicone implants and secondary breast augmentation with autologous fat grafting presented with unidentified cluster of radiolucencies superimposed to left implant on screening mammogram. Corresponding MRI revealed intraimplant fat intensities. This case represents a previously unreported intraimplant injection of fat with resultant intracapsular rupture and highlights the radiological findings of intracapsular implant rupture.
  • Küçük Resim Yok
    Yayın
    Background parenchymal enhancement: is it just an innocent effect of estrogen on the breast?
    (AVES, 2017) Arslan, Gozde; Celik, Levent; Cubuk, Rahmi; Celik, Levent; Atasoy, Mehmet Mahir
    PURPOSE We aimed to retrospectively analyze whether background parenchymal enhancement (BPE) on breast magnetic resonance imaging (MRI) correlates with menarche, menopause, reproductive period, menstrual cycle, gravidity-parity, family history of breast cancer, and the Breast Imaging-Reporting and Data System (BI-RADS) category of the patient. METHODS The study included 126 pre- and 78 postmenopausal women who underwent breast MRI in our institute between 2011 and 2016. Patients had filled a questionnaire form before the MRI. Two radiologists blinded to patient history graded the BPEs and the results were compared and analyzed. RESULTS The BPE was correlated with patient age and the day of menstrual cycle (P < 0.01 for both). No correlation was found with menarche age, menopause age, total number of reproductive years, and family history of breast cancer. In the moderate BPE group, only 1 out of 35 patients and in the marked BPE group only 1 out of 13 patients were postmenopausal and had BI-RADS scores of 4 and 5, respectively. CONCLUSION Increased symmetrical BPE is mainly due to current hormonal status in the premenopausal women. High-grade BPE, whether symmetrical or not, is rarely seen in postmenopausal women; hence, these patients should be further investigated or closely followed up.
  • Küçük Resim Yok
    Yayın
    Comparison of Internal Mammary Artery and Lateral Thoracic Artery Width in Patients with Benign and Malignant Breast Tumors
    (AVES, 2017) Arslan, Gozde; Celik, Levent; Cubuk, Rahmi; Celik, Levent; Atasoy, Mehmet Mahir
    Objective: The main objective of this study was to analyze the differences in ipsilateral and contralateral internal mammary artery (IMA) and lateral thoracic artery (LTA) width in patients with malignant and benign breast tumor. Materials and Methods: A total of 104 female patients, of which 41 had benign and 63 had malignant tumors, were included in the study. The diameters of the IMA and LTA were measured from the widest point in T1-weighted post-contrast images. Breast magnetic resonance images were evaluated by a breast radiologist. Results: The ipsilateral IMA diameter of cases in the malignant group was found to be statistically significantly higher when compared with the benign group. In the benign group, the ipsilateral IMA diameter being an average of 0.43 +/- 0.87 mm larger than the contralateral IMA diameter was found to be statistically significant, whereas in the malignant cases, the ipsilateral IMA diameter being an average of 0.78 +/- 1.08 mm larger than the contralateral IMA diameter was found to be statistically significant. Also, in benign cases, the ipsilateral LTA diameter being an average of 0.31 +/- 0.70 mm larger than the contralateral LTA diameter was found to be statistically significant, whereas in malignant cases, the ipsilateral LTA diameter being an average of 0.29 +/- 0.68 mm larger than the contralateral LTA diameter was found to be statistically significant. Conclusion: The IMA and LTA diameters in benign and malignant cases were found to be higher in comparison with contralateral breast, independent of the size of the lesion.
  • Küçük Resim Yok
    Yayın
    Complication of non-US guided procedure of aquafilling breast gel
    (SOC ROMANA ULTRASONOGRAFE MEDICINA BIOLOGIE-SRUMB, 2017) Arslan, Gozde; Celik, Levent; Atasoy, Mehmet Mahir; Celik, Levent; Cubuk, Rahmi
    …
  • Küçük Resim Yok
    Yayın
    Correlation between the histopathology and the characteristics of mammographic microcalcifications in malignant breast lesions
    (2014) Mutlu, Hakan; Saglam, Muzaffer; Atasoy, Mehmet Mahir; Sivrioğlu, Ali Kemal; Başekim, Çınar; Öztürk, Ersin; Özcan, Ümit Aksoy
    Amaç: Bu çalışmadaki amacımız, mikrokalsifikasyon içeren malign lezyonların histopatolojisi ile mikrokalsitikasyonların mamografik özellikleri arasında korelasyon olup olmadığını saptamaktır. Gereç ve Yöntem: Ekim 2007 ve Nisan 2011 tarihleri arasında, radyoloji servisimize başvuran mammografide malignite düşünülen ve patolojide malignite saptanan hastalar retrospektif olarak incelendi. Patolojisi malign çıkan ve mammografide mikrokalsifikasyon içeren 43 lezyon çalışmaya dahil edildi. Mikrokalsifikasyonların dağılımları ve tipleri ACR Bl-RADS (American College of Radiology Breast Imaging Reporting and Data System) sınıflamasına gore yapıldı. Histopatolojik değerlendirmede, lezyonların histolojik tipi ve nükleer derecesi ile duktal karsinoma in--situ (DKİS) tipleri kaydedildi. İstatistiksel analizde Spearman korelasyon testi ve çapraz tablolar kullanıldı. Bulgular: Çalışmada mikrokalsifikasyon içeren malign lezyonlarda mammografik mikrokalsifikasyonların tipi ile lezyonların histopatolojileri arasında istatistiksel anlamlı ilişki bulunmadı (p=0,124). Duktal karsinoma in--situ büyüme paternleri ve lezyonların nükleer derecesi ile mikrokalsifikasyonların tipleri arasında da anlamlı ilişki saptanmadı (p>0,05). Segmental dağılım gösteren lezyonlar nükleer derece--2 veya ile birliktelik gösterdiği bulundu. İnvaziv duktal karsinomda en sık pleomorfik mikrokalsifikasyon saptandı (21/26). Bunun yanında, invaziv duktal karsinomlardaki in-situ fokusların oranı ile mikrokalsifikasyonlann tipleri arasmda istatistiksel anlamlı ters korelasyon bulundu (p 0,044). 'r' değeri "-0,52" olup DKIS oranı ile mikrokalsifikasyon tipleri arasında ters yönde ciddi korelasyon mevcuttu. Sonuç: Malign meme lezyonları içerisindeki mikrokalsifikasyonların özellikleri lezyonların histopatolojik tipini belirlemez. Bunun yanında, spontan ortadan kalkan mikrokalsifikasyonların malign bir bulgu olabileceği bilinmelidir.
  • Küçük Resim Yok
    Yayın
    Covıd-19 pnömonisinin toraks bt bulguları ve klinik semptomlar ile ilişkisi
    (Afyonkarahisar Sağlık Bilimleri Üniversitesi, 2022) Fidan, Nurdan; Yetiş, Esra Ümmühan Mermi; Günaldı, Alev; Atasoy, Mehmet Mahir
    AMAÇ: Bu çalışmada koronavirüs hastalığı 2019 (COVID-19) ile enfekte 185 hastanın ilk başvuru sırasındaki toraks bilgisayarlı tomografi (BT) bulgularının değerlendirilmesi ve demografik veriler ile ilişkisinin sunulması amaçlandı. GEREÇ VE YÖNTEM: Mart - Temmuz 2020 tarihleri arasında, başvuru esnasında çekilmiş toraks BT incelemesi olan, gerçek zamanlı ters transkriptaz-polimeraz zincir reaksiyonu (RT-PCR) testi ile COVID-19 tanısı doğrulanmış, hastanemizde yatırılarak takip ve tedavi edilen 185 ardışık hasta çalışmaya alındı. Hastaların demografik verileri, başvuru sırasındaki şikayetleri, RTPCR sonuçları elektronik tıbbi kayıtlarından ve BT incelemeleri PACS sisteminden retrospektif olarak tarandı. Lezyon paterni olarak buzlu cam alanı, konsolidasyon ya da buzlu cam görünümü ile birlikte konsolidasyon bulgusu olması tutulum varlığı olarak kabul edildi. Tutulum tarafı, dağılımı, yaygınlığı, plevraya uzaklığı değerlendirildi. Hava bronkogramı, vasküler dilatasyon, subplevral bant formasyonu, kaldırım taşı bulgusu, traksiyon bronşektazisi, fibroatelektazi, ters halo işareti, tomurcuklu ağaç görünümü, komşu plevrada kalınlaşma, plevral effüzyon, kavitasyon, mediastinal lenfadenopati gibi diğer ek bulguların varlığı kaydedildi. BULGULAR: Olguların yaşları 18 ile 87 arasında değişmekte olup 86’sı (%46,5) kadın ve 99’u (%53,5) erkekti. Olguların %69’unda buzlu cam görünümü ve/veya konsolidasyon bulgusu varken %31’inde BT tutulum bulgusu yoktu ve %28 olguda BT tamamen normaldi. %80’inde bilateral, %87’sinde multilober tutulum görüldü. Buzlu cam görünümü ve/veya konsolidasyona eşlik eden en sık bulgular subplevral bant (%27) ve fibroatelektazi (%25) iken, tomurcuklu ağaç görünümü, kavitasyon, ters halo işareti ve plevral kalınlaşma en az görülen BT bulgularıdır. SONUÇ: Bizim çalışmamız semptomların başlangıç evresinde toraks BT’de bilateral ,periferal veya yamalı multilober buzlu cam alanlarının yaygın olduğunu ancak buna azımsanmayacak oranda konsolidasyonların eşlik ettiğini göstermiştir. Bu bulgulara en sık subplevral bant, fibroatelektazi, kaldırım taşı bulgusu ve vasküler dilatasyon gibi daha geç dönem bulguları eşlik etmektedir. RT-PCR testi sonuçlanmamış olduğunda ya da yanlış negatiflik durumunda bu bulgular COVID-19 lehine yüksek şüpheli olarak değerlendirilmeli, gerekli izolasyon ve erken tedaviye başlanmalıdır.
  • Küçük Resim Yok
    Yayın
    Diagnostic accuracy of metastatic axillary lymph nodes in breast MRI
    (SPRINGER INTERNATIONAL PUBLISHING AG, 2016) Arslan, Gozde; Altintoprak, Kubra Murzoglu; Yirgin, Inci Kizildag; Atasoy, Mehmet Mahir; Celik, Levent
    Purpose: The most important prognostic variable for early stage breast cancer is the status of axillary lymph nodes. The aim of this study was to evaluate the diagnostic accuracy of preoperative magnetic resonance imaging (MRI) for metastatic axillary lymph node in breast cancer cases with post-operative sentinel lymph node biopsy (SLNB) results. Materials and methods: Women aged between 21 and 73 years who were diagnosed with malignant mass lesion of the breast between 2013 and 2015 were included in this study. The preoperative MR images of patients with diagnosis of breast cancer was evaluated to determine axillary lymph node status. Axillary lymph node size, long axis to short axis ratio, lymph node contours, cortical thickness to anteroposterior diameter ratio, the presence of a fatty hilum and contrast enhancement patterns (homogenous or heterogenous) was noted. Additionally, the presence of comet tail sign which a tail extending from an enhancing breast lesion into the parenchyma and might represent ductal infiltration on post-contrast series was also noted. All data obtained from this evaluation was compared with postoperative SLNB results. Results: Metastatic nodes were found to have a longer short axis when compared to reactive nodes (p = 0.042; p < 0.05). The long axis to short axis ratio was notably lower in metastatic nodes when compared to reactive nodes. Cortical thickness was higher in metastatic nodes when compared to reactive nodes (p = 0.024; p < 0.05). Comet sign was observed in 15 of metastatic nodes (73.3 %) and in one (5 %) reactive node. This difference was statistically significant (p = 0.001; p < 0.01). While fatty hilum was seen in 40 % of metastatic nodes (n = 6), it was seen in all (n = 20) reactive nodes. This difference was statistically significant (p = 0.001; p < 0.01). Conclusions: MRI is a non invasive sensitive and specific imaging modality for evaluating the axilla. We have shown that with the help of comet tail sign and status of fatty hilum contrast enhanced MRI has the highest sensitivity of 84.7 % for detecting axillary lymph node metastases (Singletary et al. in Semin Surg Oncol 21(1):53-59, 2003).
  • Küçük Resim Yok
    Yayın
    Dirençli benign bilier stenozlu olguda perkütan bilier balon dilatasyonu tedavisi
    (Maltepe Üniversitesi, 2013) Atasoy, Mehmet Mahir; Kapaklı, Mahmut Sertan; Çubuk, Rahmi; Deveci, Uğur; Manukyan, Manuk Norayık; Bayramiçli, Oya; Deveci, Uğur
    Perkütan bilier balon dilatasyonu (PBBD) tedavisi benign patolojiler nedeniyle gelişen darlıklara 1980' li yıllardan itibaren uygulanan bir tedavi yöntemidir. Kolanjit şikayetleri ve hiperbilirübinemisi bulunan ve yapışıklıklar nedeni ile parsiel kolesistektomi operasyonu hikayesi bulunan olgunun endoskopi eşliğinde uygulanan işlemlere cevap vermeyen darlığına perkütan balon dilatasyonu ile tedavisi gerçekleştirildi. Dirençli darlığı bulunan olgumuzdaki PBBD tedavisini literatür ışığında sunmayı amaçladık.
  • Küçük Resim Yok
    Yayın
    Efficacy and Safety of Endovenous Laser Ablation in Very Large and Tortuous Great Saphenous Veins
    (ELSEVIER SCIENCE INC, 2015) Atasoy, Mehmet Mahir
    Purpose: To investigate the efficacy and safety of endovenous laser ablation (EVLA) with high energy delivery in large great saphenous veins (GSVs) at 1-year sonographic follow-up. Materials and Methods: Retrospective review of 385 patients who underwent EVLA between August 2011 and September 2013 was conducted, and 44 consecutive patients (21 women [47%1; mean age, 41 y; range, 23-66 y) With 49 large GSVs were included. Vein size and clinical follow-up results were recorded. A 600-mu m bare-tipped 1,470-nm laser fiber was used for the EVLA procedure. Intended energy delivery was 150 J/cm (10 sessions at 15 W) for proximal GSV segments less than 20 mm in diameter and 195 J/cm (13 sessions at 15 W) for larger veins. Improvements in clinical and quality-of-life scores at 6 months were assessed with three validated scoring systems. Results: Mean GSV diameter was 16.9.5 mm (range, 15-26 ram). Five patients had GSVs at least 20 mm in diameter. Technical success was observed in 48 GSVs (97.9%) at 1-month follow-up. A second EVLA treatment was performed in one case and achieved closure, for a GSV occlusion rate of 100% at 6 months. All patients showed significant clinical improvement on all three scoring systems (P<.001). One-year follow-up was completed in 48 of 49 cases (98%). No reeanalization was observed at 1-year follow-up, and there were no major complications. Conclusions: Sonographic follow-up at 1 year shows that EVLA is an effective and safe procedure with excellent technical success rates in the treatment of large GSVs.
  • Küçük Resim Yok
    Yayın
    The endovenous ASVAL method: principles and preliminary results
    (AVES, 2016) Atasoy, Mehmet Mahir; Oguzkurt, Levent
    PURPOSE We aimed to investigate the feasibility and safety of the endovenous ambulatory selective varicose vein ablation under local anesthesia (eASVAL) method in a selected group of patients with varicose disease and present the short-term results of one-year ultrasonographic follow-up. METHODS Three hundred and ninety-five consecutive patients with varicose veins who had been treated with endovenous laser ablation (EVLA) were retrospectively reviewed over a period of two years. From this group, 41 patients who were treated using the eASVAL technique and had the great saphenous vein (GSV) preserved were included in the study. These patients had only limited segmental GSV reflux accompanied by a competent terminal valve. The eASVAL technique can be defined as EVLA of the proximal straight segments of the major tributaries connecting the symptomatic varicose veins with the GSV, followed by ultrasound-guided foam sclerotherapy of the superficial varicose veins themselves. The patients were assessed before and after the treatment by duplex scan findings and clinical assessment scores. RESULTS The GSVs were successfully preserved in all 41 cases, and all patients showed significant clinical improvement using the eASVAL approach (P < 0.001). Segmental reflux was no longer present in 75.3% of patients. The mean diameters of the GSVs were significantly reduced at one-year follow-up (8.5 mm vs. 7.5 mm, P < 0.001). CONCLUSION eASVAL is a feasible and safe procedure in selected patients, with promising results at one-year ultrasonographic follow-up. However, prospective studies are required, comparing this approach with the standard techniques.
  • Küçük Resim Yok
    Yayın
    Evaluation of Vacuum-assisted stereotactic biopsy for isolated BI-RADS 4 microcalcifications VASB for isolated BI-RADS 4 microcalcifications
    (Bayrakol Medical Publisher, 2021) Mermi Yetiş, Esra Ümmühan; Gunaldi, Alev Özturk; Atasoy, Mehmet Mahir; Çelik, Levent
    Aim: The aim of this study was to evaluate the long-term results of vacuum-assisted stereotactic biopsy (VASB) for microcalcifications with isolated Breast Imaging Reporting and Data System (BI-RADS 4). Material and Methods: Three hundred sixty-seven patients who underwent VASB due to microcalcifications between June 2011 and October 2017 were screened. VASB was performed in all patients using stereotaxy in the lateral decubitus position. VASB, surgical pathology results and long-term follow-up findings were evaluated. Statistical analysis was evaluated with mean values and underestimation rates. Results: Among 76 patients and 78 microcalcifications, 20 were defined as ductal carcinoma in-situ (DC15), two were defined as atypical lobular hyperplasia (ALH), one as atypical ductal hyperplasia (ADH) and 56 as benign. The two cases reported as ALH in VASB refused the operation and were followed up, and no progression was detected in their follow-up. The DCIS underestimation rate was 20% (4/20). The mean follow-up time was 55.46 months, and the mean follow-up time in benign lesions was 53.4 months. No conversion to malignancy was detected in any of the patients whose VASB results were found benign (false negative rate 0%). Discussion: In our study, no conversion to malignancy was detected in the long-term follow-up results of patients with isolated BI-RADS 4 microcalcification and having benign VASB results (false negative rate 0%). This method eliminated the necessity of surgical excision in 71.7% (56/78) of the cases with isolated BI-RADS 4 microcalcification in our study. VASB may be the standard method for BI-RADS 4 microcalcifications.
  • Küçük Resim Yok
    Yayın
    Facial vein aneurysm associated with sialadenitis
    (WILEY-BLACKWELL, 2012) Ilica, Ahmet Turan; Senturk, Senem; Kertmen, Mustafa; Bukte, Yasar; Bilici, Aslan; Atasoy, Mehmet Mahir
    A 20 year-old man presented with pain and swelling of the left submandibular area. Neck sonography revealed enlargement of the submandibular gland, coarsening of its echotexture with a few calculi and a multiloculated cystic lesion. Doppler sonography revealed venous flow within the cystic lesion and aneurysmal dilatation of the adjacent facial vein. CT angiography confirmed the facial vein aneurysm. We hypothesize that inflammation of the gland had weakened the wall of the adjacent facial vein, causing aneurysmal dilatation. (C) 2012 Wiley Periodicals, Inc. J Clin Ultrasound, 2012
  • Küçük Resim Yok
    Yayın
    Initial experience of 3 tesla apparent diffusion coefficient values in differentiating benign and malignant thyroid nodules
    (WILEY, 2013) Ilica, A. Turan; Artas, Hakan; Ayan, Asli; Gunal, Armagan; Emer, Ozdes; Kilbas, Zafer; Meric, Coskun; Atasoy, Mehmet Mahir; Uzuner, Ovsev
    Purpose: To evaluate the role of diffusion-weighted magnetic resonance imaging (DWMRI) in differentiating benign and malignant thyroid nodules using a 3 Tesla (T) MRI scanner. Materials and Methods: Twenty-eight nodules in 25 patients and 14 healthy control cases were included in the study. DWMRI was acquired with 6 b values with a 3T MRI scanner. The apparent diffusion coefficient (ADC) values of the nodules were calculated from reconstructed ADC map images and were compared with the final histopathological diagnoses. Results: The mean ADC value of the benign nodules was 1548 +/- 353.4 (x106 mm2/s), and the mean ADC of the malignant nodules was 814 +/- 177.12 (x106 mm2/s). The normal thyroid tissue had a mean ADC value of 1323.43 +/- 210.35 x 106 mm2/s (9581689 x 106 mm2/s) in the healthy control group. The ADC values were significantly different among the three groups (P = 0.001). An ADC value of 905 x 106 mm2/s was determined to be the cutoff value for differentiating benign and malignant nodules, with 90% (55.598.3) sensitivity and 100% (81.3100.0) specificity. Conclusion: This study suggests that the ADC values of nodules measured with a 3T MRI scanner could help in differentiating benign thyroid nodules from malignant nodules. J. Magn. Reson. Imaging 2013;37:10771082. (c) 2012 Wiley Periodicals, Inc.
  • Küçük Resim Yok
    Yayın
    Internal Mammary Artery Anastomoses in Patients without Breast Lesions (BIRADS 1) and in Patients with Malignant Breast Lesions (BIRADS 6) on Magnetic Resonance Imaging (MRI)
    (INT SCIENTIFIC INFORMATION INC, 2017) Arslan, Gozde; Celik, Levent; Cubuk, Rahmi; Celik, Levent; Atasoy, Mehmet Mahir
    Background: We aimed to compare the frequency of IMA (internal mammarian artery) anastomoses in right and left breasts in patients without breast lesions and in patients with malignant breast lesions. Material/Methods: A total of 100 patients with no breast lesions and a total of 100 patients with malignant breast lesions were included in the study. The anastomoses of IMA of right and left breasts were evaluated on MIP and post-contrast T1-weighted magnetic resonance imaging (MRI) sequences. Breast MRI scans were read by a radiologist. Results: In patients with no breast lesions, IMA anastomoses were found in 45% of cases, and in patients with malignant breast lesions, IMA anastomoses were found in 58% cases. In four patients with malignant lesions, ipsilateral IMA was rudimentary, and the lesion was feeding from the contralateral IMA. Conclusions: No statistically significant difference was found between patients without any breast lesions and patients with malignant breast lesions with respect to the frequency of IMA anastomoses in right and left breasts. The frequencies were higher than expected in both groups.
  • Küçük Resim Yok
    Yayın
    The morphologic and functional features of LAD myocardial bridging at multi detector computed tomography coronary angiography: correlation with coronary artery disease
    (TURKISH SOC CARDIOLOGY, 2015) Aydin, Alper; Cubuk, Rahmi; Atasoy, Mehmet Mahir; Gurol, Tayfun; Soylu, Ozer; Dagdeviren, Bahadir
    Objectives: The aim of this study was to retrospectively evaluate the morphologic and functional features of myocardial bridging (MB) and to investigate the impact of morphologic features on presence of atherosclerosis with multi-detector computed tomography (MDCT) coronary angiography. Study design: The study population consisted of 191 consecutive patients. Besides coronary lesions, morphologic features of the MB (depth, length and the distance of the tunneled artery from the left coronary ostium) were analyzed. Results: MDCT detected MB on left anterior descending artery in 41 patients (21.5%). The prevalence of atherosclerotic plaques proximal to the MB of LAD was 49% (20/41). There was a statistically significant correlation between percentage of systolic compression and depth of the tunneled segment (r=0.538, p<0.01). There was no relation between distance of the tunneled segment from the ostium and degree of systolic compression. No significant correlation was found between percentage of systolic compression and length of the tunneled segment (r=0.058, p=0.721). Morphologic features of MB were not related to the presence of CAD in proximal segments. Conclusion: MDCT coronary angiography depicts the morphologic and functional features of the MB in detail. The depth of MB segment was correlated with systolic compression of MB. There was no relationship between distance of the tunneled segment from the ostium and systolic compression.
  • Küçük Resim Yok
    Yayın
    The morphologic and functional features of LAD myocardial bridging at multi-detector computed tomography coronary angiography: correlation with coronary artery disease
    (2015) Gürol, Tayfun; Çubuk, Rahmi; Atasoy, Mehmet Mahir; Soylu, Özer; Aydın, Ahmet Alper; Dağdeviren, Bahadır
    Amaç Çalışmamızın amacı çok kesitli bilgisayarlı tomografi (ÇKBT) ile saptanan sol ön inen arter (LAD) miyokart köprülerinin (MK) morfolojik ve fonksiyonel özelliklerini ve koroner arter hastalığı ile ilişkisini geriye dönük olarak değerlendirmektir.Çalışma planı Çalışmaya ÇKBT ile koroner anjiyografi yapılan 191 ardışık hasta dahil edildi. Koroner lezyonlar ve MKnin morfolojik özellikleri (derinlik, uzunluk, koroner ağzına olan uzaklığı) incelendi.Bulgular Çok kesitli bilgisayarlı tomografi ile LADde 41 hastada (%21.5) MK tespit edildi. MK proksimalinde aterosklerotik lezyon %49 (20/41) oranında saptandı. MK segmentinin derinliği ile sistolik baskının derecesi arasında istatistiki olarak anlamlı ilişki saptandı (r=0.538, p<0.01). MB segmentinin koroner ağzından uzaklığı ile sistolik baskının derecesi arasında ilişki saptanmadı. MK segmentinin uzunluğu ile sistolik baskı derecesi arasında ilişki saptanmadı (r=0.058, p=0.721). MKnin morfolojik özellikleri ile proksimal bölümde saptanan koroner arter hastalığı arasında ilişki bulunamadı.Sonuç Çok kesitli bilgisayarlı tomografi ile MKnin fonksiyonel ve morfolojik özellikleri iyi bir şekilde belirlenebilir. MK olan koroner segmentinin derinliği, baskı derecesi ile ilişkili olup MK özellikleri ile MKnin proksimal bölümünde gözlenen koroner arter hastalığı arasında ilişki saptanmamıştır.
  • Küçük Resim Yok
    Yayın
    Nonsevere Acute Pulmonary Embolism: Prognostic CT Pulmonary Angiography Findings
    (LIPPINCOTT WILLIAMS & WILKINS, 2015) Atasoy, Mehmet Mahir; Sariman, Nesrin; Levent, Ender; Cubuk, Rahmi; Celik, Omer; Saygi, Attila; Atasoy, Isil; Sahin, Sinan
    Purpose: To retrospectively evaluate the prognostic parameters of computed tomography (CT) pulmonary angiographic findings in nonsevere (hemodynamically stable) pulmonary embolism(PE) patients and to assess the predictive value of these parameters for mortality within 1 month of the initial diagnosis. Materials and Methods: Retrospectively, 67 consecutive patients (28 men, 39 women; mean age, 63.25 +/- 18 years) from 2 centers with nonsevere PE diagnosed using CT and a clinical evaluation were included in the current study. Using consensus reading, 2 readers blinded to the patients' clinical outcomes quantified the right ventricle short axis to left ventricle short axis ratio in the axial plane, vascular measurements, reflux of contrast medium into the inferior vena cava and azygos vein, ventricular septal bowing, and clot load using the Qanadli scoring system. The Simplified Pulmonary Embolism Severity Index (sPESI) and pulmonary parenchymal findings were also evaluated. All CT pulmonary angiographic parameters were compared with the risk of death within 1 month using logistic regression analysis. Results: Fifty-nine patients survived (88.1%), and 8 patients (11.9%) died because of PE. The sPESI and 2 parenchymal findings (multiple wedge-shaped opacities or consolidation accompanied by a wedge-shaped opacity) were significantly related tomortality. In the univariate analysis, neither the cardiovascular CT parameters nor the clot burden was significant between the survivors and nonsurvivors (P > 0.05). Conclusions: In clinically nonsevere PE patients, the sPESI and significant parenchymal findings were the CT parameters related to 1-month mortality.
  • Küçük Resim Yok
    Yayın
    The Relationship Between Gamma-Glutamyl Transferase Levels and Coronary Plaque Burdens and Plaque Structures in Young Adults With Coronary Atherosclerosis
    (WILEY, 2014) Celik, Omer; Cakmak, Huseyin Altug; Satilmis, Seckin; Gungor, Baris; Akin, Fatih; Ozturk, Derya; Yalcin, Ahmet Arif; Ayca, Burak; Erturk, Mehmet; Atasoy, Mehmet Mahir; Uslu, Nevzat
    Background: Elevated gamma-glutamyl transferase (GGT) levels have been demonstrated to be associated with poor prognoses in patients with coronary artery disease. Coronary computed tomography angiography (CCTA) is a noninvasive imaging modality that may differentiate the structure of coronary plaques. Elevated plaque burdens and noncalcified plaques, detected by CCTA, are important predictors of atherosclerosis in young adults. Hypothesis: The present study investigated the possible relationship between GGT levels and coronary plaque burdens/structures in young adults with coronary atherosclerosis. Methods: CCTA images of 259 subjects were retrospectively examined, and GGT levels were compared between patients with coronary plaques and individuals with normal coronary arteries. Coronary plaques, detected by CCTA, were categorized as noncalcified, calcified, and mixed, according to their structures. The significant independent predictors of coronary atherosclerosis were also analyzed using multivariate logistic regression analysis. Results: GGT levels were significantly higher in patients with coronary plaque formation than in controls (35.7 +/- 14.7 vs 19.6 +/- 10.0 U/L; P < 0.001). GGT levels were also positively correlated with the number of plaques; presence of noncalcified plaques; and levels of high-sensitivity C-reactive protein (hs-CRP), hemoglobin A1c, uric acid, and triglycerides. Moreover, smoking and levels of GGT, hs-CRP, uric acid, and low high-density lipoprotein cholesterol were independent predictors of coronary atherosclerosis. Conclusions: GGT is an inexpensive and readily available marker that provides additional risk stratification beyond that provided by conventional risk factors for predicting coronary plaque burdens and plaque structures in young adults.
  • Küçük Resim Yok
    Yayın
    Single Dose Ivabradine versus Metoprolol for Heart Rate Reduction Before Coronary Computed Tomography Angiography (CCTA): In Patients Who Were Receiving Calcium Channel Blocker Therapy
    (Elsevier Science Inc, 2013) Çelik, Ömer; Atasoy, Mehmet Mahir; Ertuk, Mehmet; Aksu, Hale Unal; Yalçın, Ahmet Arif; Aktürk, Ibrahim Faruk; Diker, Mustafa
    [Abstract Not Available]
  • Küçük Resim Yok
    Yayın
    Sonography of fat necrosis of the breast: Correlation with mammography and MR imaging
    (WILEY, 2013) Atasoy, Mehmet Mahir; Oren, Nisa Cem; Ilica, Ahmet Turan; Guvenc, Inanc; Gunal, Armagan; Mossa-Basha, Mahmud
    Fat necrosis (FN) of the breast is a benign nonsuppurative inflammatory process of the adipose tissue. The radiologic appearance ranges from benign to suspicious for malignancy; therefore, it is very important to know the distinguishing radiologic features of FN on different modalities. Mammography is more helpful in identifying FN than ultrasonography in most of the cases, and MRI may also be used to rule out malignancy as an adjunct to mammography and sonography. Even when modern diagnostic modalities are used, biopsy may still be unavoidable for some cases. In conclusion, an accurate history and familiarity with the radiologic findings are crucial to recognizing FN and avoiding unnecessary interventions. (c) 2013 Wiley Periodicals, Inc. J Clin Ultrasound41:415-423, 2013