Value Of Anteroposterior-To-Transverse Ratio in Ultrasonic Diagnosis of Thyroid Nodule in Different Locations.

To investigate the value of anteroposterior-to-transverse ratio (ATR) and the effect on features of nodules in ultrasound (US) diagnosis of thyroid nodules in different locations.  Methods: The nodules were divided into three groups according to the different nodule location: isthmus group; upper and lower poles of bilobed thyroid group; and the middle of the bilobed thyroid group. The diameters of the nodules were recorded, and ATR of the nodule was calculated on the transverse and longitudinal sections.

Automatic quantitative measurement of left atrial pressure using mitral regurgitation spectrum: clinical study on comparison with floating catheter.

Introduction: To explore how to measure LAP accurately and quantitatively, that is, the left atrial pressure (LAP) measured and calculated by equation method using mitral regurgitation spectrum.

Methods: The mitral regurgitation spectrum, pulmonary arteriolar wedge pressure (PAWP) and invasive arterial systolic pressure of radial artery of 28 patients were collected simultaneously, including 3 patients with rheumatic heart disease, 15 patients with mitral valve prolapse and 10 patients with coronary artery bypass grafting, patients with moderate or above aortic stenosis were excluded. LAP (Doppler sphygmomanometer method), LAP (Equation method) and LAP (Catheter method) were measured synchronously, and the measurement results of the three methods were compared and analyzed.

Calculation of left ventricular diastolic time constant (Tau) in dogs with aortic regurgitation using continuous-wave Doppler spectra.

Objective: To investigate a new noninvasive method for calculating left ventricular diastolic time constant (Tau) through a continuous-wave aortic regurgitation Doppler spectrum.

Methods: According to ultrasound guidance, twenty-four animal models (beagles) of aortic regurgitation and acute ischemic left ventricular diastolic dysfunction were created. The left ventricular diastolic function was manipulated with dobutamine or esmolol and fifty-nine hemodynamic stages were achieved.

2020 Chinese guidelines for ultrasound malignancy risk stratification of thyroid nodules: the C-TIRADS.

Thyroid nodules are very common all over the world, and China is no exception. Ultrasound plays an important role in determining the risk stratification of thyroid nodules, which is critical for clinical management of thyroid nodules. For the past few years, many versions of TIRADS (Thyroid Imaging Reporting and Data System) have been put forward by several institutions with the aim to identify whether nodules require fine-needle biopsy or ultrasound follow-up.

[Value of ultrasound shear wave elasticity imaging in diagnosis of Hashimoto's thyroiditis].

Objective: To investigate the correlation between Young's modulus of the thyroid tissue measured by in shear wave elastography (SWE) and the clinical manifestations of Hashimoto's thyroiditis in different stages.

Methods: A total of 104 patients with the clinical diagnosis of Hashimoto's thyroiditis were enrolled in this study, including 26 with hyperthyroidism, 29 with normal thyroid function, 27 with subclinical hypothyroidism, 22 with clinical hypothyroidism, with 50 healthy volunteers serving as the healthy control group. All the subjects underwent SWE to obtain the Young's modulus value of the thyroid tissue.

[Related factor analysis of brachial-ankle pulse wave velocity in patients with obstructive sleep apnea hypopnea syndrome].

Objective: To explore the related factors for the measurement of arterial stiffness by brachial-ankle pulse wave velocity (baPWV) in patients with obstructive sleep apnea hypopnea syndrome (OSAHS).

Methods: The blood pressure and baPWV in 76 patients with OSAHS confirmed by polysomnography (PSG) were measured. Clinical data were collected, and the carotid and extremity arteries were examined by ultrasound.

[Effect of obstructive sleep apnea hypopnea syndrome on arterial stiffness].

Objective: To assess the effect of obstructive sleep apnea hypopnea syndrome (OSAHS) on brachial-ankle pulse wave velocity (b-aPWV) in untreated diagnosed patients.

Methods: This study involved 24 consecutive male patients with newly diagnosed untreated OSAHS (aged 39.13±8.