In this prospective study, the diagnostic performance of MicroV Doppler ultrasonography (US) and Q-pack application in distinguishing malignant thyroid nodules from benign nodules will be examined. Given the emerging irregular vascular structures in malignant nodules, it is thought that MicroV Doppler US and Q-pack application can help in diagnosis. One hundred sixteen nodules that were suggested a biopsy by a clinician were examined with B-mode US, color, X-flow, and MicroV Doppler US, respectively. In addition, during MicroV Doppler US examination, thyroid nodule and its adjacent thyroid parenchyma were evaluated with Q-pack application. After US examinations, biopsy was performed on the nodules and histopathological results were obtained. Eighty-nine nodules were histopathologically proven as benign, and the rest of them were malignant. In Doppler types, the thyroid findings in score 1, 2, and 3 nodule blood supply type were benign, whereas the thyroid findings in the score 4 have a possibility of malignancy between 63% and 66.7%. It was found that MicroV Doppler was significantly superior to X-flow and color Doppler ( P = 0.037 and P = 0.042, respectively). Nodule/parenchyma Q-pack mean values were statistically significantly higher in malignant findings compared with benign findings ( P < 0.001). Nodule/parenchyma Q-pack peak values were also statistically significantly higher in malignant findings compared with benign findings ( P < 0.001). As a result, although Q-pack application enables us to obtain quantitative values about vascularity, due to its ability to demonstrate slow blood flow, microvascular vessel structure, and distribution, MicroV Doppler US has promises to detect malignant thyroid nodules.

Objective: We evaluated the testis vascularity in pediatric population with MicroV Doppler (MVD) and Q pack examination and to detect differences between a limited experience and a experienced senior radiologists. The inter-observer agreement in MVD and Q pack examination is evaluated. We also compared MVD and Q pack examination with color and power Doppler in demonstrating testicular blood supply in children. Material and Methods: 114 testis (between the ages of 4-14) were included in the study. Testicular microvessel structure was examined by using color, power, MicroV Doppler and Q-pack examination techniques. A grouping system was created for color, Power and MicroV Doppler to score the vascularity of the testicular parenchyma visually. Results: In our study, we confirmed the presence of testicular blood flow with MVD in all children. We found that there was no significant difference between the observers in color, power Doppler and MVD and the consistency value was higher in MVD compared to color and power Doppler. We observed a significant positive correlation between Q-pack values and patient age. Q-pac values obtained from this study increased with age. The lack of statistically significant bias indicates that the method is useful. Conclusion: MVD is a reproducible method since there is no significant interobserver variability and can easily detect acute scrotal pathologies such as prepubertal torsion for the less experienced radiologists in the early years of working life. Thus, the need for senior guidance accompanying radiology resident in the evaluation of emergency cases in children may decrease. Keywords: blood supply, micro V doppler, pediatric age population

Objectives: We investigated the epicardial fat volume (EFV) between patients with normal perfusion and reversible perfusion abnormalities in the myocardial perfusion scintigraphy (MPS) in patients with suspected coronary artery disease (CAD). In addition, we aimed to investigate the relationship of automated analysis parameters obtained in the MPS SPECT examination with EFV. Methods: A total of 295 patients (182 F, 113 M) who underwent MPS in our unit with the suspicion of CAD in the last 1 year and who had a recent thorax CT examination were included. EFV measurement in CT scans was done with Invesalius software. MPS was performed in all patients with a one-day stress and rest imaging protocol. In the stress study, imaging was performed approximately 30-45 minutes after intravenous injection of ~12 mCi Tc99m Sestamibi. Rest study imaging was performed approximately 30-60 minutes after intravenous injection of ~25 mCi Tc99m Sestamibi. Results: Median EFV was 53.00 ml (interquartile range: 23 ml, range 17-238 ml) in patients with normal MPS, and 62.00 ml in patients with myocardial ischemia on scintigraphy (interquartile range: 53 ml, range: 25-207 ml). The EFV value was statistically significantly higher in patients with reversible ischemia on MPS compared to patients with normal scintigraphy findings (p &lt; 0.001). There was a statistically significant, low, and positive correlation between EFV and summed difference score (SDS) values (p = 0.002, r = 0.178). Conclusions: The EFV value was significantly higher in patients with reversible ischemia on MPS compared to patients with normal scintigraphy findings. Also there was a statistically low and positive correlation between EFV and SDS values. The automatic calculation of the EFV value during this examination may be a good additional parameter to detect the presence of ischemia.

Introduction: There many more anatomical measurements such as the acromiohumeral distance and lateral acromion angle and acromial configuration was reported as might be associated with rotator cuff tear. In our study, we aimed to reveal the effect of acromion index, acromiohumeral distance, lateral acromion angle, critical shoulder angle values and the acromion type in the development of rotator cuff tear. Material and Method: In our retrospective study, 58 patients and 29 asymptomatic volunteers who underwent shoulder magnetic resonance imaging examinations were examined. acromion index, acromion humaral distance, lateral acromion angle and critical shoulder angle were measured and their relationship with rotator cuff tear and acromion types were evaluated. Results: Type III (hooked) of acromial shapes, higher acromion index and critical shoulder angle values, lower acromiohumeral distance and lateral acromion angle values are more frequently seen in rotator cuff tear patients, in our study. Conclusion: Thus, we revealed anatomical malformations that predispose to rotator cuff tear concerning the shoulder joint.

Objectives: Glioblastoma is the most common primary neoplasm of the central nervous system (CNS) and has a very poor prognosis. Ki-67 proliferative index is a value that reflects the mitotic index of the tumor and is associated with poor prognosis. The radiological features of the tumors can predict the course of the disease. The aim of this study is to evaluate the relationship between the morphology and the apparent diffusion coefficient (ADC) values of the tumor with the Ki-67 index on preoperative magnetic resonance imaging (MRI). Methods: Preoperative MRI images of 52 patients with pathological diagnosis of glioblastoma were evaluated retrospectively. A score ranging from 1 to 3 was assigned to each of the morphological features of the tumors (peritumoral edema, necrosis, contrasting pattern, heterogeneity, hemorrhage, mass effect, tumor contour irregularity), and was added up to obtain the total score. In addition, the ADC values of each tumor were measured at the workstation. ADC value and total score of each tumor, and Ki-67 values obtained histopathologically were compared. Results: There was a negative correlation between Ki-67 index of tumors and ADC values (r=-0.895, p = 0.0001). A significant positive correlation was found between the morphological features of the tumors and their total scores (r=0.772, p = 0.0001). A statistically significant negative correlation was found between total score and ADC values (r=-0.780, p = 0.0001). Heterogeneity and necrosis were the features most closely associated with Ki-67. These were followed by mass effect, hemorrhage and contour irregularity, respectively. Conclusions: The morphological findings and ADC values obtained from preoperative MRI are related to the Ki-67 value, and thus can be used to predict prognosis and guide treatment in the early period.