Detection device for detecting an object by x-ray radiation in different detecting directions

• US 20080130827A1
• Filed: 10/16/2007
• Published: 06/05/2008
• Est. Priority Date: 10/20/2006
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Klingenbeck-Regn, Klaus
• Application Number:
  US11/974,881
• Publication Number:
  US 20080130827A1
• Time in Patent Office: Days
• US Class Current: 378/8
• CPC Class Codes: A61B 5/06 Devices, other than using radiation, for detecting or locating foreign bodies for removing same A61B17/50 ; determining position of probes within or on the body of the patient
• CPC Class Codes: A61B 5/062 using magnetic field
• CPC Class Codes: A61B 5/1114 Tracking parts of the body
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 6/4233 using matrix detectors
• CPC Class Codes: A61B 6/4441 the rigid structure being a C-arm or U-arm
• CPC Class Codes: A61B 6/463 characterised by displaying multiple images or images and diagnostic data on one display
• CPC Class Codes: A61B 6/466 adapted to display 3D data
• CPC Class Codes: A61B 6/467 characterised by special input means
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61B 6/503 for diagnosis of the heart
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61B 6/527 using data from a motion artifact sensor
• CPC Class Codes: A61B 6/547 involving tracking of position of the device or parts of the device
• CPC Class Codes: A61B 90/36 Image-producing devices or illumination devices not otherwise provided for

Abstract

A detection device for detection of an object in up to three dimensions by means of x-ray radiation in directions of detection differing from each other.

The invention relates to a detection device for detecting an object in up to three dimensions with an x-ray source and a detector for the x-rays arranged in a detection plane, which is arranged and embodied so as to detect the x-rays and to create at least one 2D dataset which represents the object in a projection through the object onto the detection plane. The detection device 1 also features a C-arm connected to the x-ray source and to the detector and a control facility effectively linked to the C-arm, which is embodied to move the C-arm, depending on a control signal received on the input side, in at least two or three rotational degrees of freedom and to hold it in a detection position represented by the control signal. The detection device is embodied to create a 3D data set which represents the object in three dimensions, especially in a overhead view or a section, and to output this together with the at least one 2D dataset for reproduction by means of at least one image display unit. The detection device features a position memory for position datasets, which each represent a detection position and, depending on a user interaction signal, can read out at least one position dataset from the position memory and create a control signal corresponding to the position dataset representing a detection position for moving the C-arm into the detection position and create a 2D dataset there by means of the detector.

Claims

1. A detection device (1) for detecting an object (10) in up to three dimensions,

with an x-ray source (3) which is embodied to emit x-rays (12) and a detector (5) arranged in a detection plane for the x-rays (12) which is arranged and embodied so as to detect the x-rays (12) and to create at least one 2D dataset which represents the object (10) in a projection through the object (10) onto the detection plane, with the detection device (1) featuring a C-arm (9) which is connected to the x-ray source (3) and to the detector (5).

and the detection device(1) is embodied to create a 3D dataset (19) representing the object (10) in three spatial dimensions from a plurality of 2D datasets (18) which represent the object (10) in different directions of detection in each case in a projection through the object (10) and to keep the 3D dataset (19) stored in a memory (17), characterized in that

the detection device (1) features a control facility (11) effectively connected to the C-arm (9) which is embodied to trove the C-arm (9) depending on a control signal received on the input side, in at least two or three rotational degrees of freedom and to hold it in a detection position represented by the control signal,

and the detection device (1) is embodied to create from the 3D dataset (19) an image dataset which represents the object, especially a view onto the object, a view through the object or a section through the object, and to reproduce this together with the at least one 2D dataset by means of at least one image display unit (26),

and the detection device (1) features a position memory (25) for position datasets (23) which each represent a detection position and the detection device (1) is embodied, depending on a user interaction signal, to read out at least one position dataset (23) from the position memory (25) and to create a corresponding control signal for moving the C-arm (9) into the detection position and in the detection position to create a 2D dataset (18) by means of the detector (5).

2. The detection device as claimed in claim 1, characterized in that

the detection device (1) features a location sensor (28) which is embodied to detect a location of a medical instrument (30, 30′

) in a spatial area provided for the detection of the object (10), and to create a dataset representing the instrument location and to assign this to an area of the 3D dataset (19) corresponding to the instrument location and to create the image dataset depending on the instrument dataset such that the image dataset additionally represents the medical instrument (30′

).

3. The detection device as claimed in one of the previous claims, characterized in that

the detection device features a coordinate memory (20) and is embodied to create an object coordinate dataset (22) representing at least one detection location of the 3D dataset (19) and to store the object coordinate dataset (22) in the coordinate memory (20), and to read out the object coordinate dataset (22) stored in the coordinate memory (20) and output the instrument location in relation to the read-out object coordinate dataset (22).

4. The detection device as claimed in one of the previous claims, characterized in that

the detection device (1) features an image processing unit (24) which is embodied to create from the 3D dataset (19) a 2D dataset which represents a projection through the object represented by the 3D dataset and to output this on the output side.

5. The detection device as claimed in one of the previous claims, characterized in that

the detection device is embodied by means of the detector (5) to create a chronological sequence of 2D datasets, each of which represents chronologically consecutive detection results of the object (10).

6. The detection device as claimed in one of the previous claims, characterized in that

the image processing unit (24) is embodied to subtract at least two 2D datasets for corresponding detection locations from each other and to create an angio 2D dataset representing the subtraction result (27).

7. The detection device as claimed in one of the previous claims, characterized in that

the detection device features a movement sensor (16) which is embodied to detect a movement of the object (10) and to create a movement signal which represents the object movement, and the detection device is embodied, depending on the movement signal, to create a 3D dataset (19) or to create a 2D dataset from the 3D dataset (19).

8. The detection device as claimed in one of the previous claims, characterized in that

the control facility (11) is embodied to move the C-arm (9) depending on the control signal in at least two or three translational degrees of freedom and to hold it in a detection position represented by the control signal.

9. A method for detecting an object (10) in up to three dimensions by means of x-rays (12), in which a plurality of 2D datasets are created by means of a detector (5) for the x-rays (12), with the 2D datasets each representing the object in different directions of detection in relation to each other in a projection through the object, and a 3D dataset (19) representing the object in three spatial dimensions is created from the 2D datasets which represents the object in three dimensions,

and an image dataset is created from the 3D dataset (19) which represents the object (10), especially a view onto the object, a view through the object or a section through the object, and this is reproduced together with at least one 2D dataset (18) or a chronological sequence of 2D datasets (18) created by the detector (5) representing the object (10) in a projection through the object by means of an image display unit (26), characterized in that

at least two position datasets (23) are kept stored which each represent different detection positions for creating a 2D dataset (18) and a detection of the object is undertaken for the position datasets (23) depending on a user interaction signal corresponding to the detection position represented by the position datasets in each case and the 2D dataset (18) or the chronological sequence of 2D datasets (18) is created in the detection position by means of the detector.

10. The method as claimed in claim 9, characterized in that

an instrument location of a medical instrument (30) is detected in a spatial area provided for the detection of the object (10) and an instrument dataset representing the instrument location is created and assigned to an area of the 3D dataset (19) corresponding to the instrument location,

and an image dataset is created from the 3D dataset (19) which represents the object (10), especially a view onto the object, a view through the object or a section through the object together with the instrument (30).

11. A method as claimed in one of claims 9 or 10, in which a subtraction result is created from at least two 2D datasets (18) by subtraction for corresponding detection locations and an angio 2D dataset (27) representing this is created and this is reproduced, together with the image data, by means of the image display unit (26).