Japanese
Title心電図同期心プール像の位相解析による心室期外収縮の発生部位の診断
Subtitle短報
Authors河合直樹*, 岡田充弘*, 鈴木晃夫*, 松島英夫*, 山本秀平*, 外畑巌*, 加納浩一**, 福光隆幸**, 鈴木正之**, 村松博文**, 棚橋淑文**, 肥後隆之***, 高柳光雄***
Authors(kana)
Organization*名古屋大学医学部第一内科, **名古屋掖済会病院内科, ***放射線科
Journal核医学
Volume21
Number10
Page1323-1328
Year/Month1984/10
Article報告
Publisher日本核医学会
Abstract「I. 緒言」近年, 心電図同期心プール像の位相解析は脚ブロック, WPW症候群等の心臓興奮伝播異常例の診断評価に広く用いられるようになった. しかし, 心室期外収縮の発生部位診断における位相解析の有用性は, 人工ペースメーカ例および心室頻拍例では比較的検討が行われてはいるものの, 自発性の散発性期外収縮例では心室期外収縮像の収集自体が困難なこともあり, まだ十分に検討されていない. 本研究ではmulti-buffer video memoryを用いたbad beat rejection programを使用し, フレームモード収集により心室期外収縮像を作成し, 心室期外収縮の発生部位の診断における位相解析の有用性を検討した. 「II. 対象および方法」「1. 対象」3分間に15個または1日5,000個以上の出現頻度を有する一源性心室期外収縮(VPC)患者6名, 男4例, 女2例(平均年齢57歳)を対象とした. このうち1例は基礎心疾患として肥大型心筋症(症例2), 他の1例は大動脈弁閉鎖不全(症例5)を有した.
Practice臨床医学：一般
KeywordsPhase analysis, Ventricular premature contraction, Radionuclide ventriculography, Frame mode, Standard 12-lead electrocardiogram.
English
TitleNoninvasive Identification of the Origin of Ventricular Premature Contraction by Phase Analysis of Radionuclide Ventriculography
SubtitleShort Communication
AuthorsNaoki KAWAI*, Mitsuhiro OKADA*, Akio SUZUKI*, Hideo MATSUSHIMA*, Schuhei YAMAMOTO*, Iwao SOTOBATA*, Kohichi KANOH**, Takayuki FUKUMITSU**, Masayuki SUZUKI**, Hirobumi MURAMATSU**, Yoshibumi TANAHASHI**, Takayuki HIGO***, Mitsuo TAKAYANAGI***
Authors(kana)
Organization*First Department of Internal Medicine, Nagoya University School of Medicine, **Department of Internal Medicine, ***Department of Radiology, Nagoya Ekisaikai Hospital
JournalThe Japanese Journal of nuclear medicine
Volume21
Number10
Page1323-1328
Year/Month1984/10
ArticleReport
PublisherTHE JAPANESE SOCIETY OF NUCLEAR MEDICINE
Abstract[Summary]The usefulness of phase analysis in diagnosing the origin of ventricular premature contraction (VPC) was studied. The subjects consisted of 6 patients with frequent unifocal VPCs. Two patients were complicated with hypertrophic cardiomyopathy (Case 2) or aortic valve regurgitation (Case 5). Red blood cells were labeled in vivo with 25 mCi of technetium-99m, and 16-frame gated cardiac blood pool images (approximately 200 cardiac cycles) were collected in the 40° modified left anterior oblique projection. The bad beat rejection program in ADAC computer system was used to obtain both images of ventricular premature and sinus contractions with multi-buffer frame mode. The origin of VPC evaluated with phase analysis was right ventricle (RV) in 3 cases, left ventricle (LV) in 2 cases and probable interventricular septum in one case. In the 3 cases of RV origin, VPC was considered to originate from the RV apex in one case (Case 1) and RV outflow tract in two cases (Cases 2 and 3). Standard 12-lead electrocardiograms (ECG) showed complete left bundle branch block pattern with rS configuration in leads II, III and aVF in the former patient and with R configuration in these leads in the latter two. In 2 cases of LV origin, VPC was considered to originate from LV lateral wall (Case 4) and LV apical septum (Case 5). ECG demonstrated QRS configuration simulating complete right bundle branch block and left anterior hemiblock. In case 6, the origin of VPC was considered to be probable upper portion of the interventricular septum in both of the phase image and ECG. In conclusion, phase analysis was a useful clinical tool in assessing the origin of ventricular premature contraction.
PracticeClinical medicine
KeywordsPhase analysis, Ventricular premature contraction, Radionuclide ventriculography, Frame mode, Standard 12-lead electrocardiogram.

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