Image diagnosis apparatus

Claim 2

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two dimensional image data; and switching means for selectively switching to said means for generating an image any of the following: (1) said set window level and said set window width, (2) said calculated window level and said calculated window width, (3) said set window level and said calculated window width, or (4) said calculated window level and said set window width.

Claim 3

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two dimensional image data; and switching means for selectively switching said set window level and said window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking the average value of all pixels of an image to be reconstructed, and calculates a window width by multiplying the calculated window level by a factor of 1 to 3.

Claim 4

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two dimensional image data; and switching means for selectively switching said set window level and said window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking the average value of all pixels of an image to be reconstructed, and calculates a window width by multiplying the calculated window level by a factor of 1 to 3.

Claim 5

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking the average value of pixels in a limited central area of an image to be reconstructed, and calculates a window width by multiplying the calculated window level by a factor of 1 to 3.

Claim 6

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking the average value of pixels in a limited central area of an image to be reconstructed, and calculates a window width by multiplying the calculated window level by a factor of 1 to 3.

Claim 7

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking an intermediate value between the maximum value and the minimum value of all pixels of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 8

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking an intermediate value between the maximum value and the minimum value of all pixels of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 9

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking an intermediate value between the maximum value and the minimum value of individual average values of sub-areas defined on pixels of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 10

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking an intermediate value between the maximum value and the minimum value of individual average values of sub-areas defined on pixels of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 11

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking an intermediate value between the maximum value and the minimum value of pixels located inside a limited vertical or horizontal band-like area of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 12

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking an intermediate value between the maximum value and the minimum value of pixels located inside a limited vertical or horizontal band-like area of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 13

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking the average value of pixels located inside an inscribed circle of an image to be reconstructed, and calculates a window width by multiplying the difference between said last mentioned average value and the average value of pixels located outside said inscribed circle by a factor of 2.

Claim 14

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordance with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form to each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking the average value of pixels located inside an inscribed circle of an image to be reconstructed, and calculates a window width by multiplying the difference between said last mentioned average value and the average value of pixels located outside said inscribed circle by a factor of 2.

Claim 15

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordnace with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form in each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking the center of gravity of a histogram of all pixels of an image to be reconstructed, and calculates a window width by multiplying said calculated window level by a factor of 1 to 3.

Claim 16

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configuration or biochemical functions of a subject to be examined; means for converting said data into two-dimensional image data by reconstruction processing; means for storing said two-dimensional image data in a memory means; means for manually setting a window level and a window width; and means for generating an image based on said two-dimensional image data; the improvement comprising calculating means for calculating a window level and a window width peculiar to each two-dimensional image data in accordnace with a predetermined calculation method; memory means for storing the values calculated by said calculating means in annexed form in each two-dimensional image data; and switching means for selectively switching said set window level and said set window width or said calculated window level and said calculated window width, or any combination thereof, to said means for generating an image; wherein said calculating means calculates a window level by taking the center of gravity of a histogram of all pixels of an image to be reconstructed, and calculates a window width by multiplying said calculated window level by a factor of 1 to 3.

Claim 17

The apparatus of claim 2, 3, 4, 5, 6, 7 or 8, wherein said means for generating an image generates an image display based on a two-dimensional data using one of the calculated window levels, and a set window width.

Claim 18

The apparatus of claim 2, 3, 4, 5, 6, 7 or 8, wherein said means for generating an image generates an image display based on a two-dimensional data using one of the calculated window widths, and a set window level.

Claim 19

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configurations or biochemical functions of a subject being examined; means for storing two-dimensional image data in a memory means; means for calculating window level and window width; and means for generating an image based on said two-dimensional image data and using the calculated window level and window width; the improvement wherein said means for calculating calculates a window level by taking the average value of all pixels of a predetermined area of an image to be reconstructed, and calculates a window width by multiplying the calculated window level by a predetermined factor.

Claim 20

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configurations or biochemical functions of a subject being examined; means for storing two-dimensional image data in a memory means; means for calculating window level and window width; and means for generating an image based on said two-dimensional image data and using the calculated window level and window width; the improvement wherein said means for calculating calculates a window level by taking the average value of all pixels of a predetermined area of an image to be reconstructed, and calculates a window width by multiplying the calculated window level by a predetermined factor.

Claim 21

The apparatus of claim 11, wherein said calculating means calculates a window level by taking the average value of all pixels of an image to be reconstructed, and calculates a window width by multiplying the calculated window level by a factor of 1 to 3.

Claim 22

The apparatus of claim 11, wherein said calculating means calculates a window level by taking the average value of pixels in a limited central area of an image to be reconstructed, and calculates a window width by multiplying the calculated window level by a factor of 1 to 3.

Claim 23

The apparatus of claim 11, wherein said calculating means calculates a window level by taking an intermediate value between the maximum value and the minimum value of all pixels of the predetermined area of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 24

The apparatus of claim 11, wherein said calculating means calculates a window level by taking an intermediate value between the maximum value and the minimum value of individual average values of sub-areas defined on pixels of the predetermined area of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 25

The apparatus of claim 11, wherein said calculating means calculates a window level by taking an intermediate value between the maximum value and the minimum value of pixels located inside a limited vertical or horizontal band-like area of the predetermined area of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 26

The apparatus of claim 11, wherein said calculating means calculates a window level by taking the average value of pixels located inside an inscribed circle of an image to be reconstructed, and calculates a window width by multiplying the difference between said last mentioned average value and the average value of pixels located outside said inscribed circle by a factor of 2.

Claim 27

The apparatus of claim 11, wherein said calculating means calculates a window level by taking the center of gravity of a histogram of all pixels of the predetermined area of an image to be reconstructed, and calculates a window width by multiplying said calculated window level by a factor of 1 to 3.

Claim 28

The apparatus of claim 12, 13, 14, 15, 16, 17 or 18, wherein said means for generating an image generates an image display based on a two-dimensional data using one of the calculated window levels.

Claim 29

The apparatus of claim 12, 13, 14, 15, 16, 17 or 18, wherein said means for generating an image generates an image display based on a two-dimensional data using one of the calculated window widths.

Claim 30

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configurations or biochemical functions of a subject to be examined; means for storing two-dimensional image data in a memory means; means for calculating window level and window width; and means for generating an image based on said two-dimensional image data and using the calculated window level and window width; the improvement wherein said means for calculating calculates a window level by taking an intermediate value between the maximum value and the minimum value of all pixels of a predetermined area of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 31

In an image diagnosis apparatus comprising means for collecting data pertaining to tissue configurations or biochemical functions of a subject to be examined; means for storing two-dimensional image data in a memory means; means for calculating window level and window width; and means for generating an image based on said two-dimensional image data and using the calculated window level and window width; the improvement wherein said means for calculating calculates a window level by taking an intermediate value between the maximum value and the minimum value of all pixels of a predetermined area of an image to be reconstructed, and calculates a window width by multiplying the difference between the last mentioned said maximum and minimum values by a factor of 0.5 to 1.

Claim 32

The apparatus of claim 21, wherein said calculating means calculates a window level by taking an intermediate value between maximum and minimum values of individual average values of sub-areas defined on pixels of an image to be reconstructed.

Claim 33

The apparatus of claim 21, wherein said calculating means calculates a window level by taking the intermediate value between the maximum and minimum values of pixels located inside a limited vertical or horizontal band-like area of an image to be reconstructed.