New method of on-line quantification of regional wall motion with automated segmental motion analysis
| Autor: | Kazumi Kimura, Minoru Murashita, Yuji Kondo, Takashi Tone, Kayo Ueda, Yasuaki Tomochika, Masunori Matsuzaki, Jinyao Liu, Takashi Fujino, Taisei Yamamura, Shiro Ono, Kazuya Murata, Nobuaki Tanaka, Yasuaki Wada |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Adult
Cardiomyopathy Dilated Male Myocardial Infarction Geometry Online Systems Ventricular Function Left Image Processing Computer-Assisted Medicine Humans Radiology Nuclear Medicine and imaging Myocardial infarction Wall motion Aged Aged 80 and over Cardiac cycle business.industry Reproducibility of Results Dilated cardiomyopathy Middle Aged medicine.disease Myocardial Contraction Fractional area change Parasternal line Echocardiography Line (geometry) Female Segmental motion Cardiology and Cardiovascular Medicine business Nuclear medicine |
| Zdroj: | Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography. 14(9) |
| ISSN: | 0894-7317 |
| Popis: | We have recently developed an automated segmental motion analysis (A-SMA) system, based on an automatic "blood-tissue interface" detection technique, to provide real-time and on-line objective echocardiographic segmental wall motion analysis. To assess the feasibility of A-SMA in detecting regional left ventricular (LV) wall motion abnormalities, we performed 2-dimensional echocardiography with A-SMA in 13 healthy subjects, 22 patients with prior myocardial infarction (MI), and 9 with dilated cardiomyopathy (DCM). Midpapillary parasternal short-axis and apical 2- and 4-chamber views were obtained to clearly trace the blood-tissue interface. The LV cavity was then divided into 6 wedge-shaped segments by A-SMA. The area of each segment was calculated automatically throughout a cardiac cycle, and the area changes of each segment were displayed as bar graphs or time-area curves. The systolic fractional area change (FAC), peak ejection rate (PER), and filling rate (PFR) were also calculated with the use of A-SMA. In the control group, a uniform FAC was observed in real time among 6 segments in the short-axis view (60% ± 10% to 78% ± 9%), or among 5 segments in either the 2-chamber (59% ± 12% to 75% ± 16%) or 4-chamber view (58% ± 13% to 72% ± 12%). The variations of FAC, PER, and PFR were obviously decreased in infarct-related regions in the MI group and were globally decreased in the DCM group. We conclude that A-SMA is an objective and time-saving method for assessing regional wall motion abnormalities in real time. This method is a reliable new tool that provides on-line quantification of regional wall motion. (J Am Soc Echocardiogr 2001;14:892-901.) |
| Databáze: | OpenAIRE |
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