| Japanese |
|---|
| Title | 左心室の3次元解析に関する研究 〔I〕 - 左心室の3次元イメージ - |
|---|
| Subtitle | 《原著》 |
|---|
| Authors | 浅原朗*, 上田英雄**, 若林重興*** |
|---|
| Authors(kana) | |
|---|
| Organization | *中央鉄道病院放射線科, **中央鉄道病院, ***島津製作所医用技術部 |
|---|
| Journal | 核医学 |
|---|
| Volume | 17 |
|---|
| Number | 7 |
|---|
| Page | 781-788 |
|---|
| Year/Month | 1980/8 |
|---|
| Article | 原著 |
|---|
| Publisher | 日本核医学会 |
|---|
| Abstract | 「要旨」2台のScintillation cameraで直角に交叉する2方向から, 同時に左心室血液プールのデータを記録し, Computer解析により左心室を3次元像として表現する方法およびその目的のソフトを開発し, 基礎的検討と臨床応用の検討を行なった. 得られる3次元イメージは従来の2次元イメージと全く異なるものであり, 左心室を長軸に垂直なスライス面の積み重ねとして立体的に表現している. 本法は心室が長軸を中心とする回転楕円球体であるとの理論に基づき計算式が組み立てられており, 従って複数の平面から成る構造体は正しくその形を表現できないが, 周辺が楕円弧の合成より成る構造体は, かなり複雑な形状も正しく表現できることがPhantom実験から確認された. 心室は変形こそあれほぼ楕円球体であり, 臨床応用にあたっても難は認められなかった. 臨床応用上, 左心室の3次元イメージは心室の大きさ, 形態, 胸腔内における3次元的な位置関係をよく現し, 心筋の運動異常, 軸の変動, 収縮の様相がよく示される. 心筋梗塞の病巣, 特にAkinesisやDyskinesisが明瞭にとらえられ, 心室瘤の表現も明瞭であり, 診断的応用に高い価値が期待される. これらの所見は, 他の検査法による異常所見ともよく一致し, 信頼性の高いものであった. |
|---|
| Practice | 臨床医学：一般 |
|---|
| Keywords | Three-dimensional image, Synchronous dual-camera recording and analysis method, Three-dimensional analysis, Rotating oval-shaped body, Left ventricle of the heart |
|---|
| English |
|---|
| Title | Study on Three-Dimensional Analysis of the Left Ventricle (I) : Three-Dimensional Image of the Left Ventricle |
|---|
| Subtitle | - Original Articles - |
|---|
| Authors | Akira ASAHARA*, Hideo UEDA**, Shigeoki WAKABAYASHI*** |
|---|
| Authors(kana) | |
|---|
| Organization | *Department of Radiology, Central Hospital of J.N.R., **Central Hospital of J.N.R., ***Medical Systems Div., Shimadzu Corporation |
|---|
| Journal | The Japanese Journal of nuclear medicine |
|---|
| Volume | 17 |
|---|
| Number | 7 |
|---|
| Page | 781-788 |
|---|
| Year/Month | 1980/8 |
|---|
| Article | Original article |
|---|
| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
|---|
| Abstract | [Summary] The left ventricular blood pool data were recorded using two sets of scintillation cameras from two directions crossing each other in right angle simultaneously for computer analyses of the results, and thus the three dimensional software of left ventricle images were developed, which were studied for basic experiments and applied clinically. The three dimensional images thus obtained were found to be entirely different from the conventionally obtained two dimensional images. The image is a vertical pile of slices along the left ventricular axis. This system was developed on the theory that the ventricule is a rotating oval-shaped body with the ventricular axis as its center. By its phantom experiments, it was confirmed that this system cannot express exactly the type of constructions consisting of extremely complicated plural surfaces, but can do the type which consists of elliptic arches along the peripheral even when its total shape is of complicated kind. The left ventricle is a somewhat deformed oval-shaped body, and this system was found clinically applicable. Its clinical applications revealed that the three dimensional image shown expressed the size of the ventricle, its state and position in the thoracic cavity in its three dimensional relation to the cavity, and it was possible to detect abnormal motions of myocardial muscles, variation in the axis and the way of contractions. It could detect myocardial infarction lesions, particularly in the cases of akinesis and dyskinesis as well as ventricular aneurysms. Thus this method may possibly be evaluable diagnostically since its findings agreed well with findings by many other methods, showing its high reliability. |
|---|
| Practice | Clinical medicine |
|---|
| Keywords | Three-dimensional image, Synchronous dual-camera recording and analysis method, Three-dimensional analysis, Rotating oval-shaped body, Left ventricle of the heart |
|---|