نتایج جستجو برای: hold up volume
تعداد نتایج: 1250853 فیلتر نتایج به سال:
PurposeTo analyze differences in systolic and diastolic left ventricular (LV) as well atrial (LA) function parameters obtained from identical cardiac magnetic resonance (MR) imaging techniques during inspiratory breath-holding breathing (breath-hold to differences).Method56 subjects without signs of heart failure (23/33 male/female, age 58 ± 14 years) underwent 3 T MR cine real-time transmitral...
A new clockfeedthrough compensation scheme for switchedcurrent systems is proposed. The circuit cancels both the signal dependent and the constant clockfeedthrough term. It is shown that this concept can be used to derive various sample-and-hold circuits, depending on the desired clock frequency, accuracy, and power dissipation.
Purpose. To evaluate the accuracy of cardiac function measured with real-time true fast imaging with steady-state precession (True-FISP) cine without breath-hold compared with those measured from segmented True-FISP cine with breath-hold. Methods. Eighteen consecutive patients and six healthy volunteers were enrolled in the study group. Both realtime multislice True-FISP cine imaging without br...
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