Aim: The aim of this study was to determine the contribution of Shear Wave Elastography (SWE) to the diagnosis of polycystic ovarian syndrome (PCOS).Material and methods: Thirty-seven patients with PCOS diagnosis criteria were included in the study. Sixteen volunteer patients without hormonal disturbances and with normal menstrual cycles were evaluated as the control group. Gray scale ultrasonography (US) and SWE measurements in both ovaries were performed by a single radiologist who was blinded to the clinical and laboratory results.Results: The SWE measurements in PCOS group were 8.4±2.0 kPafor the right ovary and 9.4±3.9 kPa for the left ovary and in the control group 7.8±4.1 for the right ovary and 8.6±2.5 kPa for the left ovary. There was no statistically significant difference between the PCOS and the control group according to the SWE results (for right ovary p=0.356, for left ovary p=0.258, and total ovary p=0.293).Conclusions: The ovarian morphology isstill the most reliable imaging finding in the diagnosis of PCOS, although it is controversial especially among adolescents. Although the diagnostic efficacy of SWE is demonstrated in a variety of soft tissue lesions, we did not find any significant contribution of SWE to the diagnosis PCOS. Therefore, the promising value of elastography is yet to be defined for the diagnosis of PCOS.
IntroductionThe aim of the study was to investigate the contribution of shear wave elastography to the diagnosis of myofascial pain syndrome (MPS) of the upper part of the trapezius.Material and methodsEthical committee approval was obtained for the study. Thirty volunteer women with trigger points in the upper part of the trapezius muscle and 30 healthy women with a similar age distribution were included in the study. The patient group performed a self-stretching exercise program for 4 weeks. No intervention was applied to the control group. Muscle stiffness values of both groups were evaluated with shear wave elastography (SWE), and pain levels of all volunteers were evaluated by the Visual Analogue Scale at the beginning and the end of the study. The statistical analyses were performed using SPSS version 18.0.ResultsThere was a significant decrease after the treatment in terms of upper trapezius muscle stiffness and the pain levels in the patient group (p < 0.001 and p < 0.001). In the patient group, there was a moderate correlation between the decrease in the pain level and the reductions in muscle stiffness (r = 0.595). In control group, there was no significant difference in terms of both muscle stiffness and pain levels before and after treatment (p > 0.05).ConclusionsSWE is a reliable method for detecting latent trigger points in MPS, and it can be used for evaluating the response to treatment.
BACKGROUND AND PURPOSE: Our aim was to investigate the effects of intratumoral hemorrhage, calcification, and postoperative changes on the sensitivity of arterial spin-labeling and DSC perfusion MR imaging in patients with primary brain tumors. MATERIALS AND METHODS: Eighty-six brain tumor lesions were examined with single-phase and multiphase arterial spin-labeling and DSC perfusion MR imaging. The lesions that had no intratumoral bleeding/calcifications and history of surgery were assigned to group 1 (n 4 38), and the lesions that had these were assigned to group 2 (n = 48). The relative regional cerebral blood flow was calculated in both perfusion methods, and relative regional cerebral blood volume was calculated in DSC. Imaging results were correlated with histopathology or follow-up. RESULTS: In the quantitative evaluation, the sensitivity and specificity of relative regional cerebral blood flow in multiphase arterial spin-labeling perfusion were 94.4% and 80% in group 1 and 78.3% and 88% in group 2, respectively. The sensitivity and specificity of relative regional cerebral blood flow in DSC perfusion were 88.9% and 75% in group 1 and 78.3% and 84% in group 2, respectively. The sensitivity and specificity of relative regional cerebral blood volume in DSC perfusion were 66.7% and 100% in group 1 and 69.6% and 96% in group 2, respectively. In the qualitative evaluation, the sensitivities for single-phase and multiphase arterial spin-labeling were 48.2% and 79.3%, respectively, with 100% specificity for both. CONCLUSIONS: The sensitivity and specificity of multiphase arterial spin-labeling were similar to those of DSC perfusion irrespective of bleeding and calcification in primary brain tumors. Thus, we suggest that noncontrast multiphase arterial spin-labeling can be used instead of DSC perfusion MR imaging in the diagnosis and follow-up of intracranial tumors. ABBREVIATIONS: ASL 4 arterial spin-labeling; mpASL 4 multiphase ASL; PI 4 perfusion imaging; rCBF 4 relative CBF; ROC 4 receiver operating characteristic; rrCBF 4 relative regional CBF; rrCBV 4 relative regional CBV; spASL 4 single-phase ASL P erfusion MR imaging is a technique that provides information on angiogenesis at the microscopic level. 1 DSC MR imaging is a widely used and generally accepted MR imaging perfusion method for brain tumor diagnosis and staging. 2-4 Arterial spin-labeling (ASL) is a promising perfusion MR imaging method, which is repeatable, low-cost, and noninvasive and does not require the administration of exogenous contrast. 5 Brain tumors are often heterogeneous lesions and may include bleeding and calcification. 6 In addition, bleeding residues such as hemosiderin are frequently seen in patients postoperatively. 2,7 It is
Meniscal extrusion is a common finding particularly in osteoarthritis. It is mostly seen in the medial meniscus and accompanied by radial tears. Therefore, its presence should alert to the possibility of a radial tear extending to the meniscal root.
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