JPS6244248U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案に係る任意傾斜断面測定用フア
ントムの一実施例を示す縦断面図、第２図は第１
図のフアントムの平面図、第３図は第１図のフア
ントムを設置した状態を示す概略斜視図、第４図
ａはＸ―Ｚ面で撮影した場合の断面像、第４図ｂ
は任意傾斜断面像である。第５図ａ，ｂ，ｃはそ
れぞれ傾き角θ、回転角δ、位置移動量ｙ_ｍを示
す説明図、第６図ａ，ｂ，ｃは断層像から、傾き
角、回転角の求め方を示す説明図、第７図ａ，ｂ
は断層像から位置移動量の求め方を示す説明図で
ある。 １…円筒部、２…位置決めバー、３…円錐部、
４…核磁気共鳴信号を出し得る物質、５…底板、
６…天板、７…筒壁、８…頂点、９…中空部。 FIG. 1 is a longitudinal sectional view showing an embodiment of the phantom for measuring arbitrary inclined cross sections according to the present invention, and FIG.
Figure 3 is a schematic perspective view showing the installed state of the phantom in Figure 1, Figure 4 a is a cross-sectional image taken in the X-Z plane, Figure 4 b
is an arbitrary inclined cross-sectional image. Figures 5a, b, and c are explanatory diagrams showing the tilt angle θ, rotation angle δ, and positional movement amount y _m , respectively. Figures 6 a, b, and c show how to determine the tilt angle and rotation angle from tomographic images. Explanatory drawings shown in Figure 7 a, b
FIG. 2 is an explanatory diagram showing how to determine the amount of positional movement from a tomographic image. 1... Cylindrical part, 2... Positioning bar, 3... Conical part,
4... Substance capable of emitting nuclear magnetic resonance signals, 5... Bottom plate,
6...Top plate, 7...Cylinder wall, 8...Vertex, 9...Hollow part.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 傾き角θを求めるための円筒部と回転角δを求
めるための位置決めバーと位置移動量ｙ_ｍを求め
るための円錐部を備え、該円錐部は中空状であり
、円錐部頂点と円錐部底面の円中心を結ぶ直線が
円筒部の軸心と一致するように位置決め固定され
、該位置決めバーは円筒部の軸心と平行に、かつ
円筒部内の筒面付近に位置決め固定されるととも
に、円筒部の壁面と円錐部の壁面の間の空間と円
錐部の中空部に核磁気共鳴信号を出し得る物質を
充填したことを特徴とする任意傾斜断面測定用フ
アントム。 It includes a cylindrical part for determining the inclination angle θ, a positioning bar for determining the rotation angle δ, and a conical part for determining the positional movement amount y _m , and the conical part is hollow and has a conical part apex and a conical part bottom. The positioning bar is positioned and fixed so that the straight line connecting the centers of the circles coincides with the axis of the cylindrical part, and the positioning bar is positioned and fixed parallel to the axis of the cylindrical part and near the cylindrical surface within the cylindrical part. 1. A phantom for measuring an arbitrary inclined cross section, characterized in that the space between the wall surface of the conical part and the hollow part of the conical part is filled with a substance capable of emitting a nuclear magnetic resonance signal.