US 12,761,298 B2 · Method and apparatus for detecting a closed loop in MRI, and MRI system

Abstract

In an method for detecting a closed loop in MRI: 3D coordinates of key characteristic points of an MRI examination subject are acquired; the 3D coordinates of the key characteristic points are adapted to a 3D body standard model, to obtain a 3D virtual body model of the examination subject; 3D surface regions of pre-designated body parts are extracted from the 3D virtual body model; based on pre-defined body parts where skin contact is likely to occur, a distance between 3D surface regions of two body parts in each body part pair are calculated; and in response to the distance between the 3D surface regions of the two body parts in any body part pair being less than a preset first threshold, a risk of a closed loop in the examination subject is determined.

Claims18

Dependent claims

A method for detecting a closed loop in magnetic resonance imaging (MRI), comprising:

acquiring three-dimensional (3D) coordinates of key characteristic points of an MRI examination subject;
adapting the 3D coordinates of the key characteristic points to a 3D body standard model, to obtain a 3D virtual body model of the examination subject;
extracting 3D surface regions of pre-designated body parts from the 3D virtual body model;
based on pre-defined body part pairs where skin contact is likely to occur, calculating a distance between 3D surface regions of two body parts in each body part pair;
and
determining, based on the distance between the 3D surface regions of the two body parts in any body part pair, an existence of a risk of a closed loop in the examination subject.

3 more elements

An apparatus for detecting a closed loop in magnetic resonance imaging (MRI), comprising:

a key characteristic point acquisition module configured to acquire three-dimensional (3D) coordinates of key characteristic points of an MRI examination subject;
a 3D surface region extractor configured to:
adapt the 3D coordinates of the key characteristic points to a 3D body standard model, to obtain a 3D virtual body model of the examination subject;
and extract 3D surface regions of pre-designated body parts from the 3D virtual body model;
and
a skin contact detector configured to:
calculate, based on pre-defined body part pairs where skin contact is likely to occur, a distance between 3D surface regions of the two body parts in each body part pair;
and in response to the distance between the 3D surface regions of the two body parts in any body part pair being less than a preset first threshold, determining that there is currently a risk of a closed loop in the examination subject.

5 more elements

Dependencies are inferred from the claim text.

Method and apparatus for detecting a closed loop in MRI, and MRI system

Life of this patent

Method and apparatus for detecting a closed loop in MRI, and MRI system

Life of this patent

Abstract

Claims18