Magnetic resonance-based systems for detecting contaminating particles and methods thereof

• US 9,759,673 B2
• Filed: 05/31/2013
• Issued: 09/12/2017
• Est. Priority Date: 10/11/2012
• Status: Active Grant

• Current Assignee: Aspect Imaging Ltd.
• Original Assignee: Aspect Imaging Ltd.
• Inventors: Rapoport, Uri
• Primary Examiner(s): Fuller, Rodney
• Application Number:
  US13/906,803
• Publication Number:
  US 20140103926A1
• Time in Patent Office: 1,565 Days
• Field of Search: 324309
• CPC Class Codes: G01N 24/08 by using nuclear magnetic resonance G01N24/12 takes precedence
• CPC Class Codes: G01N 24/084 Detection of potentially hazardous samples, e.g. toxic samples, explosives, drugs, firearms, weapons
• CPC Class Codes: G01N 24/085 Analysis of materials for the purpose of controlling industrial production systems
• CPC Class Codes: G01R 33/5608 Data processing and visualization specially adapted for MR, e.g. for feature analysis and pattern recognition on the basis of measured MR data, segmentation of measured MR data, edge contour detection on the basis of measured MR data, for enhancing measured MR data in terms of signal-to-noise ratio by means of noise filtering or apodization, for enhancing measured MR data in terms of resolution by means for deblurring, windowing, zero filling, or generation of gray-scaled images, colour-coded images or images displaying vectors instead of pixels image data processing or generation, in general G06T

Abstract

The present invention provides an MRI-based hazard screening system for detecting contaminating particles within or on the surface of an object, the system characterized by

• • a. a sampling environment adapted for at least partially confining said object; said sampling environment is in fluid communication with at least one inlet and at least one fluid outlet;
  • b. a fluid streamer for streaming a fluid, throughout said at least one inlet, towards said sampling environment where said fluid effectively interfaces said object; and further throughout said at least one outlet;
  • c. an MRI device in fluid communication with said at least one outlet, adapted for providing an image of said particles streamed by said fluid thereby screening the presence of said particles within or on the surface of said object.

Claims

1. An MRI-based hazard screening system for detecting contaminating particles within or on the surface of an object, the system characterized by

a. a sampling environment adapted for at least partially confining said object, said sampling environment is in fluid communication with at least one inlet and at least one fluid outlet;

b. a fluid streamer for streaming a fluid, throughout said at least one inlet, towards said sampling environment where said fluid effectively interfaces said object; and

further throughout said at least one outlet;

c. an MRI device in fluid communication with said at least one outlet, adapted for providing an image of said particles streamed by said fluid thereby screening the presence of said particles within or on the surface of said object said MRI is provided for a high-resolution high-contrast imaging of said particles;

said MRI comprising;

i. at least one first magnet configured to provide a high magnetic field for generating multiple time-resolved one or more first images at high resolution of at least a portion of said fluid;

ii. a least one second magnet configured to provide a low magnetic field for generating multiple time-resolved one or more second images at high contrast of at least a portion of said fluid;

wherein at least one image of said first images and at least one image of said second images being generated in a time no greater than approximately the time between two first images; and

ii. a CPU to process said images comprising a computer readable medium containing instructions for generating at least one third image superimposing at least one image of said first images with at least one image of said second images, whereby a high-contrast, high-resolution real-time continuous image of said fluid is obtained.

2. The MRI-based hazard screening system of claim 1, wherein a separator and/or a collector is in fluid communication with said at least one outlet, said separator and/or collector is adapted for one or more of the following:

(i) separating out particles carried downstream by said fluid stream, and (ii) collecting said particles in a predefined volume of interest.

3. The MRI-based hazard screening system of claim 2, wherein at least one of the following is being held true (a) said MRI images said particles collected and accumulated in said volume of interest;

(b) said separator is facilitated by means of a cyclone or filter or both;

(c) said collector is facilitated by a particle collecting means selected from a group consisting of activated carbon, a filter including air filter, water filter, paper filter, HEPA filter, microfilter, water filter, water curtain, other conventional filter, other collection device, and any combination thereof.

4. The MRI-based hazard screening system of claim 1, wherein said fluid streamer is adapted for streaming a fluid in either continuously or batch-wise manner.

5. The MRI-based hazard screening system of claim 1, wherein at least one of the following is being held true (a) said at least one first magnet is of 2 Tesla and lower;

(b) said at least one first magnet is of 2 Tesla and higher;

(c) said at least one first magnet is selected from a group consisting of permanent magnets, electromagnets, superconducting magnets, and any combination thereof;

(d) said at least one second magnet is of 2 Tesla and lower;

(e) said at least one second magnet is of 2 Tesla and higher;

(f) said at least one second magnet is selected from a group consisting of permanent magnets, electromagnets, superconducting magnets, and any combination thereof;

(g) said at least one high magnetic field magnet is said at least one low magnetic field magnet; and

any combination thereof.

6. The MRI-based hazard screening system of claim 1, wherein at least one of the following is being held true (a) an integrated MRI device comprises both said high magnetic field magnets and said low magnetic field magnets;

(b) said high magnetic field magnets have a duty cycle greater than approximately 50% and said low magnetic fields magnets have a duty cycle less than approximately 50%; and

any combination thereof.

7. An MRI-based hazard screening method for detecting contaminating particles within or on the surface of an object, comprising

a. providing a sampling environment for at least partially confining said object;

said sampling environment is in fluid communication with at least one inlet and at least one fluid outlet;

b. streaming a fluid, throughout said at least one inlet, towards said sampling environment where said fluid effectively interfaces said object; and

further throughout said at least one outlet;

c. providing an MRI device in fluid communication with said at least one outlet;

d. generating an image of said particles streamed by said fluid thereby screening for the presence of said particles within or on the surface of said object;

e. providing a high-resolution high-contrast imaging of said particles;

said step is carried out by the following steps;

i. providing a least one first magnet configured to provide a high magnetic field for generating multiple time-resolved one or more first images at high resolution of at least a portion of said fluid;

ii. providing at least one second magnet configured to provide a low magnetic field for generating multiple time-resolved one or more second images at high contrast of at least portion of same said fluid;

wherein at least one image of said first images and at least one image of said second images being generated in a time no greater than approximately the time between two first images;

iii. providing a CPU to process said images comprising a computer readable medium containing instructions for generating at least one third image superimposing at least one image of said first images with at least one image of said second images;

iv. generating multiple time resolved one or more first images at high resolution of at least a portion of said fluid;

v. generating multiple time resolved one or more second images at high contrast of at least portion of said fluid; and

vi. superimposing at least one image of said first images with at least one image of said second images;

whereby a high-contrast, high resolution real-time continuous image of said particles streamed by said fluid is obtained.

8. The MRI-based hazard screening method of claim 7, comprising an additional step of providing a separator and/or a collector in fluid communication with said at least one outlet.

9. The MRI-based hazard screening method of claim 8, comprising one or more of the following steps:

(i) separating out particles carried downstream by said fluid stream, and (ii) collecting said particles in a predefined volume of interest.

10. The MRI-based hazard screening method of claim 9, wherein at least one of the following is being held true (a) said method comprising an additional step of imaging said particles collected and accumulated in said volume of interest;

(b) said method comprising an additional step of facilitating said step of separating by means of a cyclone or filter or both;

(c) said method comprising an additional step of facilitating said step of collecting by a particle collecting means selected from a group consisting of activated carbon, a filter including air filter, water filter, paper filter, HEPA filter, microfilter, water filter, water curtain, other conventional filter, other collection device, and any combination thereof; and

any combination thereof.

11. The MRI-based hazard screening method of claim 7, comprising an additional step of streaming said fluid in either a continuous or a batch-wise manner.

12. The MRI-based hazard screening method of claim 7, additionally comprising at least one step selected from a group consisting of (a) selecting said at least one first magnet to be of 2 Tesla and lower;

(b) selecting said at least one first magnet to be of 2 Tesla and higher;

(c) selecting said at least one first magnet from a group consisting of permanent magnets, electromagnets, superconducting magnets, and any combination thereof;

(d) selecting said at least one second magnet to be of 2 Tesla and lower;

(e) selecting said at least one second magnet to be of 2 Tesla and higher;

(f) selecting said at least one second magnet from a group consisting of permanent magnets, electromagnets, superconducting magnets, and any combination thereof;

(g) providing said at least one first magnet and said at least one second magnet as a single at least one magnet;

(h) selecting an integrated MRI device comprising both said high magnetic field magnets and said low magnetic field magnets;

(i) selecting a duty cycle for said high magnetic field magnets greater than approximately 50% and said low magnetic fields magnets have a duty cycle less than approximately 50%; and

any combination thereof.

13. The MRI-based hazard screening method of claim 7, for imaging at least one first and at least one second image features;

comprising an additional step of adapting said image processor to render said image by a Boolean method of correlating or combining said at least one first and at least one second image features.

14. The MRI-based hazard screening method of claim 13, comprising an additional step of selecting said Boolean operators of said Boolean method from the group consisting of OR, AND, NOT, EXCLUSIVE OR and any combination thereof.