Background Cardiovascular MRI (CMR) has the advantages of high temporal and spatial resolution with excellent endocardial definition, but ECG-gated cine SSFP imaging requires multiple sequential breath-holds and is time-consuming. Sparse sampling with iterative reconstructionallows for ultra-fast acquisitions of SSFP cine images. The accuracy of this technique compared to standard SSFP imaging ...

Background Recent developments in cardiovascular magnetic resonance (CMR) perfusion have made it possible to rapidly acquire multiple slices continuously without the need for any ECG-triggering. Promising results have been shown for visual assessment and quantification of perfusion using self-gated techniques [1-3]. This work compares the repeatability of a free breathing ungated acquisition us...

Imaging by nuclear magnetic resonance (NMR) techniques has been shown to provide high-contrast resolution between soft tissues and characterization of normal and pathologic tissues by differences in magnetic relaxation times. The current study was designed to determine whether electrocardiogram (ECG)-gated NMR imaging of the canine heart in vivo could distinguish normal from infarcted myocardiu...

Fig. 1. Multi-slice ECG-gated CT scan (slice thickness, 1.25 mm). (A) Contrast enhanced axial image, the right pulmonary artery was completely occluded by a mass (arrowhead). Endovascular component and extension into the surrounding pulmonary parenchyma were well shown. (B) 3D volume-rendered reconstruction (oblique view) shows the extension (arrowheads) and bronchial artery hypertrophy (arrows...

BACKGROUND Multislice spiral computed tomography (MSCT) with retrospectively ECG-gated image reconstruction permits coronary artery visualization. We investigated the method's ability to identify high-grade coronary artery stenoses and occlusions. METHODS AND RESULTS A total of 64 consecutive patients were studied by MSCT (4x1 mm cross-sections, 500-ms rotation, table feed 1.5 mm/rotation, in...

OBJECTIVES To evaluate the accessibility of coronary arteries from chest CT examinations acquired without ECG gating or beta-blockade. MATERIALS AND METHODS Two hundred forty-two patients (median heart rate: 81.7 bpm) underwent a non-ECG-gated CT examination with high pitch and high temporal resolution. Image analysis was obtained by consensus between two readers. RESULTS The percentage of ...

A mitral subannular left ventricular aneurysm in an Ovambo man is described. This condition should be suspected in patients of negroid descent presenting with mitral incompetence and a localised bulge on the left heart border on chest radiography. Mitral and aortic subannular aneurysms are discussed, including the diagnostic use of ECG gated cardiac blood pool imaging.

multislice computed tomography volume rendering images using ECG gated metallic stent evaluated by three dimensional Patency of coronary artery lumen surrounded by service Email alerting top right corner of the article Receive free email alerts when new articles cite this article-sign up in the box at the

BACKGROUND Accurate measures are critical when attempting to distinguish normal from pathological changes in cardiac function during exercise, yet imaging modalities have seldom been assessed against invasive exercise standards. We sought to validate a novel method of biventricular volume quantification by cardiac MRI (CMR) during maximal exercise. METHODS AND RESULTS CMR was performed on 34 ...

Though quantitative ECG-gated blood-pool SPECT (QBS) has become a popular tool in research settings, more verification is necessary for its utilization in clinical medicine. To evaluate the reliability of the measurements of left and right ventricular functions with QBS, we performed QBS, as well as first-pass pool (FPP) and ECG-gated blood-pool (GBP) studies on planar images in 41 patients and...