Effect of Papillary Muscles and Trabeculae on Left Ventricular Measurement Using Cardiovascular Magnetic Resonance Imaging in Patients with Hypertrophic Cardiomyopathy
Korean Journal of Radiology
;
: 4-12, 2015.
Article
in English
| WPRIM
| ID: wpr-157432
ABSTRACT
OBJECTIVE:
To evaluate the influence of papillary muscles and trabeculae on left ventricular (LV) cardiovascular magnetic resonance (CMR) analysis using three methods of cavity delineation (classic or modified inclusion methods, and the exclusion method) in patients with hypertrophic cardiomyopathy (HCM). MATERIALS ANDMETHODS:
This retrospective study included 20 consecutive HCM patients who underwent 1.5-T CMR imaging with short-axis cine stacks of the entire LV. LV measurements were performed using three different methods of manual cavity delineation of the endocardial and epicardial contours method A, presumed endocardial boundary as seen on short-axis cine images; method B, including solely the cavity and closely adjacent trabeculae; or method C, excluding papillary muscles and trabeculae. Ascending aorta forward flow was measured as reference for LV-stroke volume (SV). Interobserver reproducibility was assessed using intraclass correlation coefficients.RESULTS:
Method A showed larger end-diastole and end-systole volumes (largest percentage differences of 25% and 68%, respectively, p 0.05).CONCLUSION:
In HCM patients, LV measurements are strikingly different dependent on whether papillary muscles and trabeculae are included or excluded. Therefore, a consistent method of LV cavity delineation may be crucial during longitudinal follow-up to avoid misinterpretation and erroneous clinical decision-making.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Papillary Muscles
/
Stroke Volume
/
Systole
/
Cardiomyopathy, Hypertrophic
/
Retrospective Studies
/
Magnetic Resonance Imaging, Cine
/
Heart Ventricles
Type of study:
Practice guideline
/
Observational study
/
Prognostic study
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
Language:
English
Journal:
Korean Journal of Radiology
Year:
2015
Type:
Article
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