Multimodal magnetic resonance imaging for the diagnosis of parotid gland malignancies: systematic review and meta-analysis.

Background: To systematically evaluate the qualitative diagnostic value of multimodal magnetic resonance imaging (MRI) for parotid gland tumors. However, there is still a lot of controversy in this area, and the results of different studies are not consistent. Therefore, it is necessary to use meta method to analyze the significance of multimodal MRI in the diagnosis of parotid gland tumors.

High-stability, high-energy Nd:glass rod regenerative amplifier with compensation for cavity misalignment.

We report on an Nd:glass large-mode rod regenerative amplifier with a pulse energy of 125 mJ at 1053 nm. The amplifier contains a linear-type resonator, which is designed in Stability Zone II with a misalignment sensitivity factor of 12.9 m.

Association of CT perfusion imaging with plasma levels of TGF-β1 and VEGF in patients with NSCLC.

Objective: To study the association of CT perfusion imaging parameters with plasma level of transforming growth factor-β1 (TGF-β1) and vascular endothelial growth (VEGF) in patients with non small cell lung cancer (NSCLC).

Methods: A total of 67 patients with NSCLC (NSCLC group) and 64 patients with benign lesion (control group) were given with CT perfusion imaging to obtain blood flow, blood volume, mean transit time, time to peal and permeability surface through CT perfusion software. The plasma levels of TGF-β1 and VEGF were tested by ELISA.

Dynamic changes in ultrasound characteristics of nodules in cirrhotic liver and their implications in surveillance for malignancy.

Objective: To investigate whether there are ultrasound characteristics that can suggest HCC in ultrasound surveillance of nodules in cirrhotic liver.

Methods: Data from 277 patients with hepatitis B virus-related nodules in cirrhotic liver undergoing ultrasound surveillance of the nodules for malignancy were reviewed. Size of the nodules ranged 6-23 mm.

Findings and implications of focal fatty sparing of the liver at follow-up: a preliminary study based on sonography, computed tomography, and magnetic resonance imaging.

Objectives: The purpose of this study was to investigate the stability of focal fatty sparing of the liver and its clinical implications.

Methods: This prospective study consisted of 2 parts. In the first part, patients who underwent sonography and computed tomography (CT) or magnetic resonance imaging (MRI) were selected, and abnormal findings including focal and diffuse liver abnormalities were documented.

Role of ultrasound in the diagnosis of common soft tissue lesions of the limbs.

Objective: The objective of this study was to investigate the role of ultrasound in the diagnosis of the soft tissue lesions of the limbs.

Methods: Database of the soft tissue lesions of the limbs were reviewed retrospectively. All lesions had been confirmed by histopathology after surgical removal or biopsy.

The frequency and clinical significance of the halo sign in focal nodular hyperplasia of the liver.

Objective: The purpose of this study was to investigate the frequency of the halo sign in focal nodular hyperplasia (FNH) of the liver and its clinical significance.

Methods: Archives of 19 patients (6 men, mean age 35 years +/- 11, range 22-53 years and 13 women, mean age 39 years +/- 15, range 17-66 years) diagnosed from April 2005 through March 2012 with FNH were reviewed. All images were analyzed by three readers in a panel in order to depict the characteristics of the liver lesions and established in consensus a diagnosis.