Measuring the diameter of coronary arteries on MR angiograms using spatial profile curves.

Shimamoto, Ryoichi; Suzuki, J; Nishikawa, Junko; Fujimori, Yoshikazu; Nakamura, Fumi; Shin, Wee Soo; Tomaru, Takanobu; Toyo’oka, Toshimasa

doi:10.2214/ajr.170.4.9530028

Cited by 20 publications

(11 citation statements)

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“…Optimal reproducibility of MRI has also been reported for ventricular chamber volume measurements and LV function assessment, particularly if compared with angiography or echocardiography [26,27]. In fact, using such techniques, geometric assumptions in LV volume measurements are mandatory [4,6,22], whereas this is not the case for MRI. Moreover, MRI does not have the echocardiographic problem of ªecho dropoutº, with errors of interpretation of myocardial borders and of acoustic window [4].…”

Section: Discussionmentioning

confidence: 99%

“…Then, this area was multiplied by the slice thickness and this product was summed for the whole ventricle, in order to obtain the ventricular myocardial volume. Finally, the volume was multiplied by the standard for myocardial density (1.05 g/cm 3 ) to obtain the MM [22]. The EDV and ESV were measured with ROIs outlining the chamber areas of each end-diastolic and end-systolic frame (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Their proximal portion was reconstructed on MPR images using straight or curve planes and were displayed on the monitor. Optimal window setting for coronary artery measurements was chosen according to Shimamoto et al [22]. The ostial CSA was measured on transverse views by one reader with manual contouring technique (Fig.…”

Section: Methodsmentioning

confidence: 99%

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Magnetic resonance imaging of athlete's heart: myocardial mass, left ventricular function, and cross-sectional area of the coronary arteries

et al. 2000

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To evaluate left ventricular myocardial mass and function as well as ostial coronary artery cross-sectional area in endurance athletes, an athlete group of 12 highly trained rowers and a control group of 12 sedentary healthy subjects underwent MR examination. An ECG-gated breath-hold cine gradient-echo sequence was used to calculate myocardial mass, end-diastolic and end-systolic volumes, stroke volume, and cardiac output, all related to body surface area, as well as ejection fraction. A 3D fat-saturated ECG- and respiratory-triggered navigator echo sequence was used to evaluate coronary arteries: left main (LM), left anterior descending (LAD), left circumflex (LCx), and right coronary artery (RCA). Cross-sectional area was calculated and divided for body surface area. Myocardial mass was found significantly larger in athlete group than in control group (p = 0.0078), the same being for end-diastolic volume (p = 0.0078), stroke volume (p = 0.0055), LM (p = 0.0066) and LAD (p = 0.0129). No significant difference was found for all the remaining parameters. Significant correlation with myocardial mass was found for LM (p < 0.001) and LAD (p = 0.0340), not for LCx and RCA. Magnetic resonance imaging is a useful tool in evaluating the myocardial hypertrophy and function of athlete's heart. Magnetic resonance angiography is a valuable noninvasive method to visualize the correlated cross-sectional area increase of the left coronary artery system.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Magnetic resonance imaging of athlete's heart: myocardial mass, left ventricular function, and cross-sectional area of the coronary arteries

et al. 2000

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“…There are two coronary MR angiographies now available, i.e., two-dimensional coronary MR angiography with a single breath hold and three-dimensional coronary MR angiography with navigator monitoring. Although the two-dimensional method has finer spatial resolution and a higher signal to noise ratio, 25) sophisticated slice selection is required to include the target portion of the coronary artery. On the other hand, although the coronary artery can be spontaneously included in the slab for the three-dimensional method, its image quality is poorer.…”

Section: Delineation Of the Coronary Arterial Treementioning

confidence: 99%

Evaluation of the Heart with Magnetic Resonance Imaging.

Suzuki¹,

Nagai²,

Nishikawa³

et al. 2000

Jpn Heart J

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SUMMARYAfter compensating for two kinds of motion artifacts caused by cardiac beating and respiration, cardiac magnetic resonance (MR) imaging is now feasible for the diagnosis of various cardiac diseases. Taking cost-effectiveness into consideration, this paper reviews the experiences of preferable indications of cardiac MR imaging by demonstrating the characteristic preciseness and uniqueness that play an important role in obtaining time-volume curves consisting of the theoretically most accurate measurements of left and right ventricular volumes, in overall evaluation of the left ventricular apex and the right ventricle, in delineating the wide range of the coronary arterial tree, in measuring the most precise blood flow volume through the cross-sectional images of the vessels, and in assessing the spatial derivative of the blood flow velocity at the vessel wall, i.e., wall shear rate. (Jpn Heart J 2000; 41: 417-424)

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“…1,2 In addition, perspective rendering of the coronary arteries using electron-beam CT (EBCT), which has the capability of electrocardiogram triggering and has excellent temporal and spatial resolution, has been reported in conjunction with the shaded surface display technique. 3 Qualitative information on the characterization and morphology of atherosclerotic plaque would be useful in selecting the appropriate device or procedure as intervention in coronary heart disease for individual patients.…”

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confidence: 99%

Endoluminal Perspective Volume Rendering of Coronary Arteries Using Electron-Beam Computed Tomography

Funabashi

Misumi

Ohnishi

et al. 2003

Circ J

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ecently it has become possible to evaluate coronary arteries using non-invasive modalities such as computed tomography (CT) or magnetic resonance imaging. 1,2 In addition, perspective rendering of the coronary arteries using electron-beam CT (EBCT), which has the capability of electrocardiogram triggering and has excellent temporal and spatial resolution, has been reported in conjunction with the shaded surface display technique. 3 Qualitative information on the characterization and morphology of atherosclerotic plaque would be useful in selecting the appropriate device or procedure as intervention in coronary heart disease for individual patients. We report our experience with endoluminal perspective volume rendering (PVR) of the coronary arteries using EBCT. Case ReportBoth conventional coronary angiography and EBCT were performed on a 70-year-old male within a period of 24 h. He had an old myocardial infarction, and balloon angioplasty without stenting had been performed 2 years previously because of stenosis of the distal portion of the left anterior descending coronary artery (LAD). However, it had failed to expand the stenotic site and the patient had experienced recurrent chest pain for 1 month prior to this study. Conventional coronary angiograms revealed signifi- Remarkable progress has been made in the treatment of coronary heart diseases because of a variety of new interventional devices, but as each new device or procedure has suitability for a particular type of patient or purpose, patient selection is increasingly important. Endoluminal perspective volume renderings of the coronary arteries of a 70-year-old male with old myocardial infarction and recurrent chest pain were carried out using electron-beam computed tomography. Conventional coronary angiography had revealed significant stenosis of the distal portion of the left anterior descending branch, and subsequent conventional balloon angioplasty had failed to expand the stenotic site. Perspective volume rendering images can distinguish differences in objects and evaluate the cross sectional area of the lumen and the morphology of calcification. In the present patient, a huge mass of calcified plaque occupied most of the lumen at a site corresponding to the angiographic site of stenosis. According to this finding, rotational atherectomy was indicated and had a good outcome. The qualitative information for characterizing and determining the morphology of atherosclerotic plaque provided by perspective volume rendering may be useful in selecting the appropriate intervention.

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Measuring the diameter of coronary arteries on MR angiograms using spatial profile curves.

Cited by 20 publications

References 0 publications

Magnetic resonance imaging of athlete's heart: myocardial mass, left ventricular function, and cross-sectional area of the coronary arteries

Magnetic resonance imaging of athlete's heart: myocardial mass, left ventricular function, and cross-sectional area of the coronary arteries

Evaluation of the Heart with Magnetic Resonance Imaging.

Endoluminal Perspective Volume Rendering of Coronary Arteries Using Electron-Beam Computed Tomography

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