A geometric basis for calculation of right ventricular volume in man

Boak, Jennifer; Bové, Alfred A.; Kreulen, Thomas H.; Spann, James F.

doi:10.1002/ccd.1810030305

Cited by 46 publications

(15 citation statements)

References 9 publications

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“…The most suitable BiPL position for volume calculation, however, seem to be the 30" RAOJ60" LAO because the greatest accuracy is achieved when in one of the projections (ie, 30" RAO) the cast displays the largest possible area to the X-ray beams [6]. The smallest errors in RVV occurs in these BiPL views [5,35], and our findings confirm this.…”

Section: Discussionsupporting

confidence: 71%

“…Our cast studies showed that in addition to the established BiPL PA/LAT and RAOI LAO right ventricular volumetric methods [2][3][4][5][6][7]35,36] the BiPL calculations in the two axial projections [long axial and HCL) also gave very good correlations. Consequently, in patients studied for ventricular septa1 defects, endocardia1 cushion defects, D-transposition of the great arteries, etc, RVV may be obtained from these newer angiographic projections without the need for additional "standard" contrast studies.…”

Section: Discussionmentioning

confidence: 81%

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Single versus biplane right and left ventricular volumetry: A cast and clinical study

Formanek

Schey

Ekstrand

et al. 1984

Cathet. Cardiovasc. Diagn.

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True volume (y) and measured volume (x) determined from 23 right and 22 left normal human casts in four biplane angiographic positions and in their eight single-plane components were used to find the correction factor (b) by regression through the origin (y = bx). The correction factors were applied to human studies to assess the validity of the various biplane and single-plane modalities in vivo. The casts studies yield excellent correlations in both right and left biplane methods (right volumetry: 0.555 less than or equal to b less than or equal to 0.708, 0.917 less than or equal to r less than or equal to 0.954, 4.10 less than or equal to SEE less than or equal to 6.01 left volumetry: 0.748 less than or equal to b less than or equal to 0.825, 0.974 less than or equal to r less than or equal to 0.982, 4.81 less than or equal to SEE 5.79). Good results were obtained with single-plane volumetries as well (right volumetry: 0.316 less than or equal to b less than or equal to 0.887, 0.750 less than or equal to r less than or equal to 0.917, 10.75 less than or equal to SEE less than or equal to 18.96; left volumetry: 0.728 less than or equal to b less than or equal to 0.881, 0.897 less than or equal to r less than or equal to 0.976 5.73 less than or equal to SEE less than or equal to 11.97). The correction factors for the single-plane studies depend much more strongly on the spatial position relative to the radiographic system, particularly in the case of the right ventricular volumes. Thus, the application of the appropriate correction factors is mandatory. The human studies (141 left and 60 right volumetric studies in various single-plane and biplane projections) showed a larger scatter of single-plane values, more pronounced for the right ventricle. In certain disease conditions, single plane volumetric studies using cast-derived correction factors cannot be used to obtain meaningful results. Correction factors for the following single or biplane mode volumetry are presented for the first time: biplane hepatoclavicular view (right and left ventricle), biplane long axial oblique view (right ventricle), and their single-plane components; lateral and 60 degree Left Anterior Oblique (LAO) single plane for the left-sided measurements, Postero-Anterior (PA), lateral, and 60 degree LAO for the single-plane right-sided calculations.

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Section: Discussionsupporting

confidence: 71%

Section: Discussionmentioning

confidence: 81%

Single versus biplane right and left ventricular volumetry: A cast and clinical study

Formanek

Schey

Ekstrand

et al. 1984

Cathet. Cardiovasc. Diagn.

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“…Diagnoses of biopsy specimens were not different in the group with pacemakers compared with the group that did not have pacemakers. From the 12 patients who did not have pacemakers, one biopsy specimen was normal, six indicated nonspecific myopathic changes, one indicated small-vessel disease, two indicated arrhythmogenic right ventricular dysplasia, and two indicated myocarditis (neither patient with myocarditis had previous intracardiac instrumentation). Of the six patients with pacemakers at the time of biopsy, three had nonspecific myopathic changes, one had small-vessel disease, one had myocarditis, and one had normal biopsy specimens.…”

Section: Resultsmentioning

confidence: 99%

Results of endomyocardial biopsy in patients with spontaneous ventricular tachycardia but without apparent structural heart disease.

Strain¹,

Grose²,

Factor³

et al. 1983

Circulation

192

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To evaluate possible occult myocardial disease in 18 patients whose only major manifestation of heart disease was spontaneous ventricular tachycardia or fibrillation, right ventricular endomyocardial biopsies were performed. None of the patients had symptoms of ischemic or congestive heart disease, and at catheterization none had significant lesions of the coronary arteries or regional wall motion abnormalities of the left ventricle. The mean left ventricular ejection fraction (65 + 7%), mean right ventricular ejection fraction (55 + 9%), mean cardiac index (3.0 ± 0.5 1/min/m2), mean right atrial pressure, mean pulmonary capillary wedge pressure, and mean pulmonary artery systolic pressure were normal. However, right ventricular endomyocardial biopsy specimens were abnormal in 16 of 18 (89%) patients: nine (50%) had changes of a significant, although nonspecific, cardiomyopathy with myocellular hypertrophy, interstitial and perivascular fibrosis, and vascular sclerosis; three (17%) had subacute inflammatory myocarditis; two (11%) had diffuse abnormalities of the intramyocardial arteries; and two (11%) had pathologic changes consistent with arrhythmogenic right ventricular dysplasia. In the two (1 %) patients with normal biopsy specimens, one had Wolff-Parkinson-White syndrome and the other had mitral valve prolapse. Although histologic abnormalities were found in 89% of these patients, performance of right ventricular endomyocardial biopsies in this group of patients should be considered a research procedure. We conclude that the majority of patients who have serious ventricular arrhythmias but no apparent structural cardiac abnormalities have abnormal right ventricular biopsy specimens and that the arrhythmias may be the first manifestation of a variety of primary myocardial abnormalities.

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“…Because the geometry of the right ventricle is rather complex and variable, it is difficult to calculate reliable volumes from these projections. Many geometric models based on different projections have been proposed for volumetry of right ventricles in the past [1][2][3][4][5][6][7]. These models have been validated decades ago often in small samples.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of New Software for Angiographic Determination of Right Ventricular Volumes

Wellnhofer¹,

Ewert

Hug³

et al. 2005

Int J Cardiovasc Imaging

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A geometric basis for calculation of right ventricular volume in man

Cited by 46 publications

References 9 publications

Single versus biplane right and left ventricular volumetry: A cast and clinical study

Single versus biplane right and left ventricular volumetry: A cast and clinical study

Results of endomyocardial biopsy in patients with spontaneous ventricular tachycardia but without apparent structural heart disease.

Evaluation of New Software for Angiographic Determination of Right Ventricular Volumes

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