BACKGROUND The assessment of cardiac iron overload in thalassemia major has been considered as an important predictive factor of heart injury. The magnetic resonance imaging (MRI)-derived relaxation time parameter (T2*) varies inversely with iron level, and elevated myocardial iron levels by T2* are associated with depressed left ventricular (LV) ejection fraction (EF). We compared echocardiogr...

BACKGROUND AND PURPOSE Heterogeneity in cortical signal intensity on T2-weighted MR images has been recently documented. Using a whole-brain, multiecho MR imaging technique, we sought to determine the T2 relaxation times of nine predefined regions in the cerebral cortex and one region in the deep gray matter. METHODS Ten adult volunteers (nine men and one woman; age range, 18-40 y; average ag...

BACKGROUND The study was undertaken to determine whether a single slice magnetic resonance (MR) myelogram sequence improves the interpretation and diagnostic yield for magnetic resonance imaging (MRI) of the spine. METHODS A total of 100 cases with positive findings were retrospectively reviewed. All patients had initial imaging with sagittal T1-weighted (T1-W) and T2-weighted (T2-W) scans, f...

We tested the hypothesis that activation of inwardly rectifying potassium (KIR) channels and Na(+)-K(+)-ATPase, two pathways that lead to hyperpolarization of vascular cells, contributes to both the onset and steady-state hyperemic response to exercise. We also determined whether after inhibiting these pathways nitric oxide (NO) and prostaglandins (PGs) are involved in the hyperemic response. F...

The effect of stimulus frequency on the in vivo pressure generating capacity of the human diaphragm is unknown at lung volumes other than functional residual capacity. The transdiaphragmatic pressure (Pdi) produced by a pair of phrenic nerve stimuli may be viewed as the sum of the Pdi elicited by the first (T1 Pdi) and second (T2 Pdi) stimuli. We used bilateral anterior supramaximal magnetic ph...

We analyzed blood flow pattern in the interatrial communication in 24 patients with complete transposition of the great arteries (TGA). Eight had TGA with atrial shunt (group 1), nine had TGA with patent ductus arteriosus or ventricular septal defect (group 2), and seven had pulmonary arterial banding and Blalock-Taussig shunt (group 3). The flow pattern was determined at the site of atrial sep...

A field experiment was conducted to evaluate the effects of textile effluent and chemical fertilizer on growth yield tossa jute (O-795). The in a randomized complete block design (RCBD) replicated thrice with six treatments. Growth parameters, viz. plant height, base diameter, green weight, dry matter fiber stick were assessed. highest height (3.7 m), maximum diameter (16.17 mm), plants leaves ...

In the study, use of hydroponic green oats (Arrenatherium elatius) was evaluated in productive behavior guinea pigs for analysis it handled with a completely randomized design (DBCA), also verified an variance (ADEVA) and significant Turkey tests at 5%. The treatments used were: T1: (100:0) =100% cut 0% hydroponic, T2: (75:25) =75% 25% T3: (50:50) =50% 50% T4: (25:75) =25% 75% T5: (0:100) =0% 1...

A novel Mo–28Ti–14Si–6C–6B (atom %) alloy was designed for ultrahigh-temperature applications. Arc-melting and appropriate heat-treatment at 1600°C results in the targeted four-phase microstructure comprising Moss, Mo5SiB2 (T2), Ti5Si3 TiC. Previously developed three-phase alloys, Moss–T2–Ti5Si3 Moss–T2–TiC, are outperformed by this as an adequate balance of oxidation resistance, creep strength...