Dynamic cardiac quality assurance phantom system and method

• US 4,331,869 A
• Filed: 06/23/1980
• Issued: 05/25/1982
• Est. Priority Date: 06/23/1980
• Status: Expired due to Term

• Current Assignee: Capintec, Inc. (American Capital Limited)
• Original Assignee: Capintec, Inc. (American Capital Limited)
• Inventors: Rollo, Frank D.
• Primary Examiner(s): Willis, Davis L.
• Application Number:
  US06/162,200
• Time in Patent Office: 701 Days
• Field of Search: 250/252, 250/363 R, 250/363 S, 250/496, 250/497, 250/505, 250/510, 35/17
• US Class Current: 250/252.1
• CPC Class Codes: G01D 18/00 Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
• CPC Class Codes: G01T 1/1648 Ancillary equipment for scintillation cameras, e.g. reference markers, devices for removing motion artifacts, calibration devices adapted for flow studies G01T1/1647
• CPC Class Codes: G06G 7/60 for living beings, e.g. their nervous systems ; for problems in the medical field

Abstract

A dynamic phantom system and method utilizing a phantom device for simulating operation of a heart. The phantom device comprises first and second rotatable ellipsoids having first and second axes of rotation for simulating an atrium and a ventricle, respectively, of the heart, and a motor for rotating the first and second rotatable ellipsoids in unison to simulate the operation of the heart. The axes of rotation of the first and second rotatable ellipsoids are mutually perpendicular. A trigger circuit is further provided for issuing a trigger pulse in response to each rotation of the first and second rotatable ellipsoids. An attenuator is also provided for simulating ejection fraction of the heart. The dynamic phantom device is especially useful in testing camera-computer combinations employed for heart imaging and monitoring, so as to evaluate the quality of operation of the camera-computer combination.

Claims

1. A dynamic phantom device for simulating operation of a heart, comprising:

a first rotatable ellipsoid having a first axis of rotation for simulating an atrium of the heart,

a second rotatable ellipsoid vertically disposed with respect to said first rotatable ellipsoid and having a second axis of rotation perpendicular to the first axis of rotation for simulating a ventricle of the heart, and

motor means for rotating said first and second rotatable ellipsoids in unison to simulate the operation of the heart.

2. The device of claim 1, wherein said motor means comprises a D.C. motor, further comprising trigger means connected to said D.C. motor and responsive to each rotation of said first and second rotatable ellipsoids for issuing a trigger pulse.

3. The device of claim 1, wherein said first and second rotatable ellipsoids are filled with radioactive material generating radiation, further comprising attenuator means adjacent to at least one of said first and second rotatable ellipsoids for attenuating said generated radiation so as to simulate ejection fraction of said heart.

4. A dynamic cardiac quality assurance phantom system for measuring the quality of operation of a heart monitoring system which includes a camera and a computer connected thereto, said system comprising a dynamic phantom device as recited in claim 1.

5. The system of claim 4, wherein said motor means comprises a D.C. motor, further comprising trigger means connected to said D.C. motor and responsive to each rotation of said first and second rotatable ellipsoids for issuing a trigger pulse.

6. The system of claim 4, wherein said first and second rotatable ellipsoids are filled with radioactive material generating radiation, further comprising attenuator means adjacent to at least one of said first and second rotatable ellipsoids for attenuating said generated radiation so as to simulate ejection fraction of said heart.

7. A method for simulating operation of a heart, comprising the steps of:

providing first and second rotatable ellipsoids having respective first and second axes of rotation for simulating an atrium and a ventricle, respectively, of the heart, said first and second axes of rotation being mutually perpendicular; and

rotating said first and second rotatable ellipsoids in unison to simulate the operation of the heart.

8. The method claim 7, further comprising the step of generating a trigger pulse with each rotation of the first and second rotatable ellipsoids.

9. The method of claim 7, further comprising the step of filling the first and second rotatable ellipsoids with radioactive material generating radiation, providing an attenuator adjacent to at least one of said first and second rotatable ellipsoids for attenuating said generated radiation so as to simulate ejection fraction of said heart.

10. The method of claim 7, further comprising the step of providing a camera and a computer connected thereto for scanning the simulated operation of the heart, whereby to perform dynamic cardiac quality assurance with respect to said camera and said computer connected thereto.