PATENT CLAIM ANALYSIS

Application Number: 15871131
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["382", "131000"]

Abstract:
Methods and devices for reconstructing dual-energy CT images are provided. In one aspect, CT scan is performed with a high energy and a low energy periodical and alternatively changed on a scanning target, reconstruction data for a high-energy image of a current reconstruction position is obtained based on whether a circle of high-energy scan closest to the current reconstruction position of the scanning target is a full circle of scan, the high-energy image of the current reconstruction position is reconstructed according to the reconstruction data of the high-energy image; reconstruction data for a low-energy image of the current reconstruction position is obtained based on whether a circle of high-energy scan closest to the current reconstruction position of the scanning target is the full circle of scan, the low-energy image of the current reconstruction position is reconstructed according to the reconstruction data of the low-energy image.

Claim (Index 8):
A device for reconstructing a dual-energy CT image, comprising:\n a processor, and a non-transitory machine-readable storage medium storing machine executable instructions which are executable by the processor to: perform CT scan with a high energy and a low energy periodical and alternatively changed on a scanning target, wherein a scanning angle range for each full circle of high-energy scan and a scanning angle range for each full circle of low-energy scan are respectively from 0 to \u03b8 max ; determine whether a circle of high-energy scan closest to a current reconstruction position of the scanning target is a full circle of scan; when the circle of high-energy scan closest to a current reconstruction position of the scanned target is the full circle of scan,\n obtain a first set of projection data corresponding to the full circle of high-energy scan as reconstruction data for a high-energy image corresponding to the current reconstruction position; \n when the circle of high-energy scan closest to the current reconstruction position of the scanned target is not the full circle of scan,\n obtain a second set of projection data corresponding to a non-full circle of high-energy scan, wherein a scanning angle range corresponding to the non-full circle of high-energy scan is from 0 to \u03b8 high-end , 0<\u03b8 high-end <\u03b8 max , \n truncate a third set of projection data corresponding to a scanning angle range from \u03b8 high-end  to \u03b8 max  from projection data corresponding to a full circle of high-energy scan before the non-full circle of scan; \n merge the second set of projection data and the third set of projection data as the reconstruction data for the high-energy image of the current reconstruction position; \n reconstruct the high-energy image of the current reconstruction position according to the reconstruction data of the high-energy image; determine whether a circle of low-energy scan closest to a current reconstruction position of the scanning target is a full circle of scan; when the circle of low-energy scan closest to a current reconstruction position of the scanned target is the full circle of scan,\n obtain a fourth set of projection data corresponding to the full circle of low-energy scan as reconstruction data for a low-energy image corresponding to the current reconstruction position; \n when the circle of low-energy scan closest to the current reconstruction position of the scanned target is not the full circle of scan,\n obtain a fifth set of projection data corresponding to a non-full circle of low-energy scan, wherein a scanning angle range corresponding to the non-full circle of low-energy scan is from 0 to \u03b8 low-end , 0<\u03b8 low-end <\u03b8 max , \n truncate a sixth set of projection data corresponding to a scanning angle range from \u03b8 low-end  to \u03b8 max  from projection data corresponding to a full circle of low-energy scan before the non-full circle of scan; \n merge the fifth set of projection data and the sixth set of projection data as the reconstruction data for the low-energy image of the current reconstruction position; \n reconstruct the low-energy image of the current reconstruction position according to the reconstruction data of the low-energy image.

Metadata:
- Claim Count in Document: 28.0
- Percentile: 86.0
- Lexical Diversity: 3.16667
- Patent Class: 382.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['11037968', '10523867', '14681797', '14304848', '13982275']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2759894561714762
- 35 USC 102 Novelty (BERT): 0.4733648365932887
- Combined Prediction Score: 0.2957269942136575
- Mean Citation Score: 160.95423999999997
- Max Citation Score: 165.50163
- Similarity Product: 127.7141001220858

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test