Nuclear Magnetic Relaxation Time of Blood and Blood Velocity

comparison of blood flow velocity changes in posterior cerebral artery measured with transcranial doppler sonography in migraineurs with visual aura and normal persons after photostimulation

چکیده ندارد.

Range/velocity limitations for time-domain blood velocity estimation.

The traditional range/velocity limitation for blood velocity estimation systems using ultrasound is elucidated. It is stated that the equation is a property of the estimator used, not the actual physical measurement situation, as higher velocities can be estimated by the time domain cross-correlation approach. It is demonstrated that the time domain technique under certain measurement condition...

Nuclear Magnetic Relaxation

The Effect of Relaxation on Blood Sugar and Blood Pressure Changes of Women with Gestational Diabetes: a Randomized Control Trial

Objective: Gestational diabetes influences mother’s health and is accompanied by severe complications. Relaxation is a complementary method for managing this disease. Hence, the current study aimed to evaluate the effect of relaxation on blood sugar and blood pressure changes of women with gestational diabetes. Materials and Methods: In present randomized control trial, 58 patients with gestat...

Implementation of Ultrasound Time-domain Cross-correlation Blood Velocity Estimators Implementation of Ultrasound Time-domain Cross-correlation Blood Velocity Estimators

The implementationof real-time blood velocity estimators using time-domain cross-correlation is investigated. The basic algorithm is presented for doing stationary echo canceling, cross-correlation estimation and subsequent velocity estimation. Sampled data acquired at rates of approximately 20 MHz are used in the algorithm imposing a heavy burden on the signal processing hardware. The algorith...