A modification of the standard spin-echo pulse sequence designed to suppress motion artifacts was clinically evaluated on T2-weighted MR images of the cervicocranial region. A retrospective study involving 40 patients, half of whom were examined with a standard T2-weighted multislice spin-echo sequence and half of whom were examined with a gradient waveform modification of the same sequence, un...

The paper deals with a new approach to laser thermography for the inspection of coating thickness. is based on scanning specimen surface point by point, using low-power laser, and recording temperature responses an IR camera. A recorded sequence then transformed into similar flash pulse sequence. Fast Fourier transform was used as processing technique. results are compared measurement. It shown...

To evaluate the molecular dynamics and regions presented in cinnamon types it was chosen to them without any treatment, for that used low-field nuclear magnetic resonance (NMR) through pulse sequence such as MSE-FID, an NMR time domain, from longitudinal relaxation (with a constant T1), employing inversion-recovery sequence. The results indicate techniques were very good alternative these of sa...

Background Late gadolinium enhancement (LGE) imaging allows assessment of focal scar [1]. An inversion recovery based sequence is commonly used to achieve suppression of healthy myocardium signal. However, the blood pool and subendocardial scar typically have similar signal, making it difficult to distinguish subendocardial scar. Several methods have been proposed to increase the blood-scar con...

WaterLOGSY and STD experiments are widely used as NMR-based screening techniques in drug research. In the present study, an improved STD pulse sequence was developed, and its efficiency and applicability of observing the ligand signals were evaluated compared with the WaterLOGSY experiment. A combination of presaturation, a WET sequence and subsequent repeated Z-filters can provide the most eff...

PURPOSE To develop a novel pulse sequence for free-breathing, multislice, native myocardial T1 mapping. METHODS The slice-interleaved T1 (STONE) sequence consists of multiple sets of single-shot images of different slices, acquired after a single nonselective inversion pulse. Each slice is only selectively excited once after each inversion pulse to allow sampling of the unperturbed longitudin...

Introduction: Strongly modulating pulses (SMP) [1] have been used to homogenize tissue flip angle (FA) on upper legs at 3 T. The muscle and fat tissues were discriminated in the pulse design algorithm via their resonance frequencies to achieve different flip angles. For a given TR, by implementing the respective nominal Ernst angles of the two different tissues in a spoiled gradient recalled ec...

Proton magnetic resonance imaging (MRI) has recently emerged as a clinical tool to image the lungs. This paper outlines the current technical aspects of MRI pulse sequences, radiofrequency (RF) coils and MRI system requirements needed for imaging the pulmonary parenchyma and vasculature. Lung MRI techniques are presented as a "technical toolkit", from which MR protocols will be composed in the ...

To address the problems of poor adaptability to pulse loss, susceptibility interfered pulses, and need sub-PRI (Pulse Repetition Interval) ranking in existing signal sorting algorithms, this paper proposes an algorithm for staggered PRI signals based on congruence transform. According analysis characteristics signal, proposed transforms arrival time a fixed value, which sequence extraction can ...