Ultrasounds are acoustic vibrations that are not perceived by the human ear as their frequency is greater than 20,000 Hz. They are artificially generated by the action of the electric current, whose polarity is periodically reversed, on a quartz crystal, subjecting it, by the action of the electromagnetic field created, to successive contractions and expansions. This alternation of movements generates vibrations, which, transmitted to cellular and intercellular structures, cause collisions and generate heat.

Advanced ultrasound offers an important diagnostic clinical tool for the specialty of Obstetrics (OB) and Gynecology (GYN). The advanced ultrasound technologies, such as power Doppler angiography, with its assessment of vascular flow, adds to the described clinical benefits. The imaging technology that this represents, offers diagnostic abilities for a variety of obstetric and gynecologic conditions

Liver biopsy continues to be the gold-standard with regards to diagnosis and staging of the majority of liver diseases. Serologic markers certainly have helped in diagnosing various autoimmune and viral-related liver diseases. Furthermore, laboratory testing and imaging studies such as liver elastography have allowed us to non-invasively assess fibrosis. Unfortunately, there are shortcomings with these forms of testing. False positives or laboratory errors will lead to misleading diagnoses. Situations can also arise during which there are diagnostic dilemmas, such as an obese patient with positive autoimmune serology and elevated liver chemistries.

The local and peritoneal recurrence play a vital role in the natural history of the evolution of gastrointestinal and ovarian neoplasms. Different methods of applying intraperitoneal chemotherapy were used perioperatively to consolidate or control peritoneal carcinomatosis [1]. The use of chemotherapy directly in the peritoneal cavity allows the direct action of the therapeutic agent in the metastatic nodules, increasing the local concentration with a limited increase in the systemic concentration. 

Metatarsalgia is a frequent cause of forefoot pain. Surgical treatment is based on the performance of osteotomies at the level of the minor radii to restore a normal distribution of pressure within the forefoot and improve the biomechanics during gait.