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    The relationship between perimesencephalic subarachnoid hemorrhage and deep venous system drainage pattern and calibrations
    (Elsevier Science Inc, 2014) Buyukkaya, Ramazan; Yildirim, Nalan; Cebeci, Hakan; Kocaeli, Hasan; Dusak, Abdurrahim; Ocakoglu, Gokhan; Erdogan, Cuneyt
    Background and purpose: The purpose of this study is to investigate the relationship between Rosenthal basal vein (BVR) type and diameter and perimesencephalic nonaneurysmal subarachnoid hemorrhage (P-SAH). Materials and methods: Aneurysmal subarachnoid hemorrhage (A-SAH), P-SAH, and control groups were evaluated, and BVRs were classified by type. BVR diameters in patients were measured. Results: There was a statistically significant difference of BVR drainage types between groups (P=.002). BVR diameters of patients with normal drainage pattern in P-SAH group were significantly smaller than those in both other groups (P<.001). Conclusion: There is a relationship between P-SAH and BVR primitive drainage type. P-SAH risk increases in parallel with decreasing caliber of BVR in patients with normal drainage pattern.(C) 2014 Elsevier Inc. All rights reserved.
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    Twin Reversed Arterial Perfusion (TRAP) Sequence; Characteristic Gray-Scale and Doppler Ultrasonography Findings
    (Kowsar Publ, 2015) Buyukkaya, Ayla; Tekbas, Guven; Buyukkaya, Ramazan
    Twin reversed arterial perfusion (TRAP) sequence is a syndrome with poor prognosis, seen only in monochorionic monozygotic twin pregnancies. The incidence is one in 35.000 births and one in 100 monozygotic twin pregnancies. It is characterized with a recipient fetus exhibiting lethal anomalies including acardia and a pump fetus. Mortality is usually due to heart failure or premature labor caused by polyhydramnios of pump fetus. Herein, we report a case of TRAP sequence that emphasizes the importance of gray-scale and color Doppler imaging in the diagnosis and management of TRAP sequence.