Gülgün Demirpolat

Publications (6)3.37 Total impact

• Source

  Available from: dirjournal.org

  Article: Ultrasound evaluation of fetal chromosome disorders.

  Sadik Tamsel, Süreyya Ozbek, Gülgün Demirpolat
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  ABSTRACT: Prenatal diagnosis of chromosomal disorders requires an invasive test in women regarded as being at high risk after screening. There is extensive evidence that effective screening for major chromosomal abnormalities can be provided in the first and second trimesters of pregnancy. With the association of some biochemical markers, it is possible to identify about 90% of chromosomal abnormalities. In this article, we aimed to review the important ultrasonographic markers of chromosomal abnormalities, including nuchal translucency, nasal bone, and nuchal skinfold thickness, based on the data available in the literature.
  Diagnostic and interventional radiology (Ankara, Turkey) 07/2007; 13(2):97-100. · 1.10 Impact Factor
• Article: [Primary hepatic actinomycosis: a case of inflammatory pseudotumor (case report)].

  Sadik Tamsel, Gülgün Demirpolat, Refik Killi, Nevra Elmas
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  ABSTRACT: Actinomycosis is an uncommon chronic infection in which primary liver involvement accounts for 5% of all actinomycotic infections. Abdominal actinomycosis is a severe and progressive peritoneal infection due to an anaerobic gram-positive bacterium, Actinomyces israelii. The presence of a long-standing intrauterine device (IUD) is a well-known risk factor in young women. Although hepatic lesions are present in 15% of cases of abdominal actinomycotic infection, liver involvement in the majority of these cases is attributable to metastatic spread from other evident intraabdominal sites. Hepatic actinomycosis presents most commonly as a single abscess. However, hepatic actinomycosis can closely mimic a malignant tumor on clinical and radiological examination. Such lesions have been termed inflammatory pseudotumors. Tissue specimens for microscopic examination are necessary for diagnosis. We report a rare case of inflammatory pseudotumor of the liver caused by actinomycotic infection.
  Tanısal ve girişimsel radyoloji: Tıbbi Görüntüleme ve Girişimsel Radyoloji Derneği yayın organı 07/2004; 10(2):154-7.
• Article: [Doppler ultrasound diagnosis of lower extremity deep vein insufficiency: Valsalva maneuver or pneumatic cuff?].

  Gülgün Demirpolat, Süha Süreyya Ozbek, Celal Cinar, Serkan Gür
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  ABSTRACT: To compare the efficacy of Valsalva maneuver and pneumatic compression techniques in detecting lower extremity deep venous and saphenofemoral insufficiency. Eighty-one extremities evaluated in 43 patients who had undergone Doppler ultrasound examination of the lower extremity venous system were included in the study. Valsalva maneuver and pneumatic cuff techniques were used to elicit reflux in the standing position. Reflux was investigated with spectral Doppler in the superficial femoral vein, popliteal vein, the proximal segment of the great saphenous vein close to its junction with the femoral vein and in its caudal segment at the medial aspect of the knee. The same measurements were repeated after rapid deflation of the pneumatic cuff, which was applied to the calf and was initially inflated to 200 mmHg. Retrograde flow exceeding 1000 msec was regarded as insufficiency. The results of the two techniques at each venous segment were compared with the McNemar test. Deep venous and/or saphenofemoral insufficiency were detected in 61 of the 81 extremities. The cuff deflation technique was superior at the popliteal vein and caudal segment of the great saphenous vein. The Valsalva maneuver was superior at the superficial femoral vein. The statistical results did not change when the McNemar test was repeated for reflux exceeding 2000 msec. Combined application of Valsalva maneuver and pneumatic cuff techniques will lead to more accurate evaluation and increased detection of lower extremity venous insufficiency.
  Tanısal ve girişimsel radyoloji: Tıbbi Görüntüleme ve Girişimsel Radyoloji Derneği yayın organı 07/2004; 10(2):162-6.
• Article: Reliability of intrarenal Doppler sonographic parameters of renal artery stenosis.

  Gülgün Demirpolat, Süha Süreyya Ozbek, Mustafa Parildar, Ismail Oran, Ahmet Memiş
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  ABSTRACT: The goal of this study was to retrospectively evaluate false-negative results of Doppler sonography in the diagnosis of renal artery stenosis (RAS) using intrarenal criteria. We reviewed the clinical data and Doppler sonographic data for all patients in whom a diagnosis of RAS had been confirmed angiographically between November 1992 and January 2001. Mean intrarenal acceleration and acceleration time values-data obtained directly from color Doppler sonography-and findings of angiographic examination of the kidneys and stenotic renal arteries were evaluated. During the study period, 55 cases of RAS had been angiographically confirmed in 46 patients (25 male and 21 female; mean age, 50 +/- 19 years [+/- standard deviation]). Intrarenal arterial acceleration, acceleration time values, or both were abnormal in 42 kidneys (76%) (group A) and normal in 13 kidneys (24%) (group B). The mean age +/- standard deviation was significantly higher for patients in group B (60 +/- 12 years) than for those in group A (47 +/- 20 years) (p > 0.05). In group B, most of the stenotic lesions were atherosclerotic, and in all kidneys but 1, the lesions were located at the renal ostium or the proximal half of the artery. Isolated use of intrarenal Doppler sonographic criteria for RAS may lead to an unacceptably high incidence of false-negative results in the diagnosis of this condition, especially in elderly patients.
  Journal of Clinical Ultrasound 09/2003; 31(7):346-51. · 0.81 Impact Factor
• Article: [Temporal bone CT and MRI in cochlear implant candidates].

  Gülgün Demirpolat, Recep Savaş, Seçil Totan, Işil Bilgen, Tayfun Kirazli, Hüdaver Alper
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  ABSTRACT: Hearing can be restored by cochlear implantation in patients with sensorineural hearing loss, who have a normal seventh cranial nerve. The aim of imaging in cochlear implant candidates is to determine the etiology of the hearing loss, congenital malformations and variations that may cause difficulty during the operation, patency of the cochlea and the presence of the seventh, cranial nerve. The aim of this study is to review the literature and to discuss the imaging findings that may affect the type and success of the operation. 33 cochlear implant candidates, who underwent high resolution computed tomography, were included in the study. High resolution fast spin echo T2 weighted and constructive interference in steady state sequences were performed in 23 patients with a 1.5 Tesla magnetic resonance unit. Computed tomography and magnetic resonance imaging were normal in 16 patients. Unilateral or bilateral labyrinthine ossification was detected in 4 patients. Variations of the temporal bone, congenital malformations, sequelae of chronic otitis and trauma were detected in 13 patients. Cochlear implantation was performed in 5 patients. Operative difficulty, complications and postoperative outcome were noted in these 5 patients. High resolution computed tomography and magnetic resonance images obtained by high resolution T2 weighted fast spin echo sequence and constructive interference in steady state sequence help the surgeon in planning the operation and predict potential complications in cochlear implant candidates.
  Tanısal ve girişimsel radyoloji: Tıbbi Görüntüleme ve Girişimsel Radyoloji Derneği yayın organı 04/2003; 9(1):41-6.
• Article: Stromal predominant type mesenchymal hamartoma of liver: CT and MR features.

  Meltem Cetin, Gülgün Demirpolat, Nevra Elmas, Gül Yüce, Nazan Cetingül, Erol Balik
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  ABSTRACT: Mesenchymal hamartoma is a rare pediatric liver tumor. The tumor is mainly cystic but occasionally a solid component is seen. Therefore the tumor can be divided into two forms: (a) cystic predominant, and (b) stromal predominant. In this report, CT and MR features of stromal predominant type mesenchymal hamartoma are presented.
  Computerized Medical Imaging and Graphics 26(3):167-9. · 1.47 Impact Factor