کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10435033 | 910805 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simultaneous pressure-volume measurements using optical sensors and MRI for left ventricle function assessment during animal experiment
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کلمات کلیدی
PVAESPESVend-systolic pressure–volume relationshipend-diastolic pressure–volume relationshipEDPVRIsovolumic relaxationCWEEDVVCOESPVRMRI - امآرآی یا تصویرسازی تشدید مغناطیسیPotential energy - انرژی پتانسیلeffective arterial elastance - انعطاف پذیری شریانی موثرisovolumic contraction - انقباض عضلانیCardiac output - برون ده قلبیleft ventricle - بطن چپMagnetic resonance imaging - تصویربرداری رزونانس مغناطیسیend-systolic volume - حجم سیستول پایینstroke volume - حجم ضربه ایpressure–volume - حجم فشارcardiovascular magnetic resonance - رزونانس مغناطیسی قلب و عروقHeart rate - ضربان قلبend diastolic volume - پایان دادن به حجم دیاستولیکStroke work - کار سکته مغزیejection fraction - کسری خروجی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی پزشکی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Simultaneous pressure-volume measurements using optical sensors and MRI for left ventricle function assessment during animal experiment Simultaneous pressure-volume measurements using optical sensors and MRI for left ventricle function assessment during animal experiment](/preview/png/10435033.png)
چکیده انگلیسی
Simultaneous pressure and volume measurements enable the extraction of valuable parameters for left ventricle function assessment. Cardiac MR has proven to be the most accurate method for volume estimation. Nonetheless, measuring pressure simultaneously during MRI acquisitions remains a challenge given the magnetic nature of the widely used pressure transducers. In this study we show the feasibility of simultaneous in vivo pressure-volume acquisitions with MRI using optical pressure sensors. Pressure-volume loops were calculated while inducing three inotropic states in a sheep and functional indices were extracted, using single beat loops, to characterize systolic and diastolic performance. Functional indices evolved as expected in response to positive inotropic stimuli. The end-systolic elastance, representing the contractility index, the diastolic myocardium compliance, and the cardiac work efficiency all increased when inducing inotropic state enhancement. The association of MRI and optical pressure sensors within the left ventricle successfully enabled pressure-volume loop analysis after having respective data simultaneously recorded during the experimentation without the need to move the animal between each inotropic state.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Medical Engineering & Physics - Volume 37, Issue 1, January 2015, Pages 100-108
Journal: Medical Engineering & Physics - Volume 37, Issue 1, January 2015, Pages 100-108
نویسندگان
Dima Abi-Abdallah Rodriguez, Emmanuel Durand, Ludovic de Rochefort, Younes Boudjemline, Elie Mousseaux,