Flexible micromachined ultrasound transducers (MUTs) for biomedical applications.

The use of bulk piezoelectric transducer arrays in medical imaging is a well-established technology that operates based on thickness mode piezoelectric vibration. Meanwhile, advancements in fabrication techniques have led to the emergence of micromachined alternatives, namely, piezoelectric micromachined ultrasound transducer (PMUT) and capacitive micromachined ultrasound transducer (CMUT). These devices operate in flexural mode using piezoelectric thin films and electrostatic forces, respectively.

The effects of melatonin on follicular oxidative stress and art outcomes in women with diminished ovarian reserve: a randomized controlled trial.

Background: To investigate the impact of Melatonin on follicular oxidative stress and assisted reproductive technology (ART) outcomes in women with diminished ovarian reserve (DOR).

Method: We put 68 women with DOR who were going through ART into a randomized controlled trial. Starting on the fifth day of their menstrual cycle, we gave them either 3 mg of Melatonin or a placebo every day before stimulating their ovaries.

Amlodipine in the HRT cycle for frozen embryo transfer to correct uterine artery resistance in women with prior implantation failure: a randomized controlled trial.

Objective: For successful embryo implantation in women with high pulsatility, uterine vascular resistance and pulsatility must be reduced. We examined the effects of amlodipine on uterine pulsatility index (PI), resistance index (RI), and embryo transfer (ET) outcomes in women with prior implantation failure and at least one elevated uterine PI measurement (especially higher than 3).

Methods: Between February and November 2023, our reproductive facility conducted a single-center randomized clinical trial, enrolling 100 patients with previous implantation failure and at least one uterine PI measurement exceeding 3.

Attitudes towards patient safety among physicians and nurses in Iranian governmental teaching hospitals: a cross-sectional survey.

Objectives: To assess and compare attitudes towards patient safety among physicians and nurses in Iranian governmental teaching hospitals and to identify factors associated with attitudes towards patient safety.

Design: An institution-based, cross-sectional survey was carried out from July to August 2023.

Setting: 10 governmental teaching hospitals in Tehran, Iran.

Flexible PZT-based Row-Column Addressed 2D PMUT Array.

This paper reports a 30×12 row-column (RC) addressed flexible piezoelectric micromachined ultrasound transducer (PMUT) array with a top-down fabrication process. The fabrication uses a temporary carrier wafer from which the array device is released by deep reactive ion etching (DRIE). About 0.