GB1400471A - Apparatus for automatic computation of cardiothoracic ratio - Google Patents
Apparatus for automatic computation of cardiothoracic ratioInfo
- Publication number
- GB1400471A GB1400471A GB4071272A GB4071272A GB1400471A GB 1400471 A GB1400471 A GB 1400471A GB 4071272 A GB4071272 A GB 4071272A GB 4071272 A GB4071272 A GB 4071272A GB 1400471 A GB1400471 A GB 1400471A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scan
- image
- ray
- lines
- cardiothoracic ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 210000000038 chest Anatomy 0.000 abstract 3
- 101100234822 Caenorhabditis elegans ltd-1 gene Proteins 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 210000004072 lung Anatomy 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
- G01N21/5907—Densitometers
- G01N21/5911—Densitometers of the scanning type
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/503—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of the heart
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
- G06T7/62—Analysis of geometric attributes of area, perimeter, diameter or volume
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10116—X-ray image
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30048—Heart; Cardiac
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- General Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Biophysics (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Immunology (AREA)
- Geometry (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Cardiology (AREA)
- High Energy & Nuclear Physics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Radiology & Medical Imaging (AREA)
- Biochemistry (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
- Image Analysis (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Image Input (AREA)
Abstract
1400471 Photo-electric analysis of x-ray pictures MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 1 Sept 1972 [3 Sept 1971] 40712/72 Heading G1A [Also in Division H3] Apparatus for automatically measuring the cardiothoracic ratio comprises means 822, Fig. 8 which may be a vidicon tube or a standard T.V. camera, for scanning an x-ray chest image 810 along a parallel raster perpendicular to the median line of the image and converting the brightness of the scan to an electrical signal, and data processing means 830 for computing the cardiothoracic ratio and for displaying or recording this value at 840 the data processing means being adapted to infer intersections between the images of boundary lines of the thorax and the heart and the raster lines, and being adapted to correct data apparently erroneous on the basis of the previously scanned points. The cardiothoracic ratio is defined as (13 + 14/15)x 100% (see Fig. 1) where 13-15 represent maximum values obtained from the scan. In Fig. 1 the lungs are shown at 12, 12' and the heart at 11. Referring again to Fig. 8 the output from the scanning means 822 is amplified at 824 and passed through a sample and hold circuit 825 to an A/D converter. The sample and hold circuit 825 and the deflection circuit 82B of the scanner are both controlled by a circuit 827 such that the raster of scanning lines of the device 822 is from top to bottom of the x-ray image, i.e. parallel to the median line of the chest and the samples are taken at a plurality of corresponding points along each scan line to thereby simulate scan lines in a perpendicular direction. The feed of x-ray film images to the optical system may be automatic and two displaced photo-cells may be employed to enable the film to be stopped in the precise position. The Specification gives details of the approach to analyzing the image and of the erroneous correction procedure but provides no details of the equipment 830 used to effect this.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46068426A JPS5116091B2 (en) | 1971-09-03 | 1971-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1400471A true GB1400471A (en) | 1975-07-16 |
Family
ID=13373337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4071272A Expired GB1400471A (en) | 1971-09-03 | 1972-09-01 | Apparatus for automatic computation of cardiothoracic ratio |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3869602A (en) |
| JP (1) | JPS5116091B2 (en) |
| CA (1) | CA979074A (en) |
| DE (1) | DE2243449B2 (en) |
| FR (1) | FR2152055A5 (en) |
| GB (1) | GB1400471A (en) |
| NL (1) | NL7211930A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2367477A1 (en) * | 1976-10-15 | 1978-05-12 | Optische Ind De Oude Delft Nv | DEVICE FOR READING AND PROCESSING INFORMATION RELATING IN PARTICULAR TO TOMOGRAPH IMAGES |
| EP0063316A1 (en) * | 1981-04-08 | 1982-10-27 | Fuji Photo Film Co., Ltd. | Method of and apparatus for reading out image information |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3988602A (en) * | 1975-02-03 | 1976-10-26 | Goodyear Aerospace Corporation | Method and apparatus for enhancing data |
| US4101961A (en) * | 1977-02-16 | 1978-07-18 | Nasa | Contour detector and data acquisition system for the left ventricular outline |
| US4240440A (en) * | 1977-11-17 | 1980-12-23 | Siemens Gammasonics, Inc. | Method and apparatus for nuclear kymography providing a motion versus time display of the outer transverse dimensions of an organ |
| JPS5530835A (en) * | 1978-08-25 | 1980-03-04 | Takashi Katoda | Method of forming heterogeneous junction in semiconductor |
| US4521808A (en) * | 1979-03-22 | 1985-06-04 | University Of Texas System | Electrostatic imaging apparatus |
| US4399457A (en) * | 1981-06-08 | 1983-08-16 | General Electric Company | X-Ray image digital subtraction system |
| JPS5876712A (en) * | 1981-10-31 | 1983-05-09 | Shimadzu Corp | X ray checking device |
| JPH02134148A (en) * | 1988-11-16 | 1990-05-23 | Toshiba Corp | Heart function analysis method |
| JP2729825B2 (en) * | 1989-01-25 | 1998-03-18 | 株式会社日立メデイコ | Real-time digital radiography device |
| ES2087824B1 (en) * | 1994-09-16 | 1997-02-16 | Duque Rafael Aparicio | PERFECTED DEVICE FOR THE QUICK DETERMINATION OF THE CARDIOTORACICO INDEX THROUGH GRADUATED BAND OF ELASTIC MATERIAL. |
| FR2790657B1 (en) * | 1999-03-12 | 2001-08-03 | Iodp | METHOD FOR MEASURING THE THICKNESS OF A MUSCLE FROM AN IMAGE |
| CN101502420B (en) * | 2008-02-05 | 2013-05-22 | Ge医疗系统环球技术有限公司 | Image processing method and equipment |
| JP6082337B2 (en) * | 2013-10-30 | 2017-02-15 | 横河電機株式会社 | Cardiothoracic ratio calculation device |
| CN104732520A (en) * | 2015-01-31 | 2015-06-24 | 西安华海盈泰医疗信息技术有限公司 | Cardio-thoracic ratio measuring algorithm and system for chest digital image |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3580997A (en) * | 1968-07-05 | 1971-05-25 | Balteau Electric Corp | Video system for automatic production line inspection by x-ray |
-
1971
- 1971-09-03 JP JP46068426A patent/JPS5116091B2/ja not_active Expired
-
1972
- 1972-08-29 US US284558A patent/US3869602A/en not_active Expired - Lifetime
- 1972-09-01 FR FR7231125A patent/FR2152055A5/fr not_active Expired
- 1972-09-01 GB GB4071272A patent/GB1400471A/en not_active Expired
- 1972-09-01 NL NL7211930A patent/NL7211930A/xx unknown
- 1972-09-01 CA CA150,809A patent/CA979074A/en not_active Expired
- 1972-09-04 DE DE2243449A patent/DE2243449B2/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2367477A1 (en) * | 1976-10-15 | 1978-05-12 | Optische Ind De Oude Delft Nv | DEVICE FOR READING AND PROCESSING INFORMATION RELATING IN PARTICULAR TO TOMOGRAPH IMAGES |
| EP0063316A1 (en) * | 1981-04-08 | 1982-10-27 | Fuji Photo Film Co., Ltd. | Method of and apparatus for reading out image information |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2243449B2 (en) | 1975-08-14 |
| JPS4834452A (en) | 1973-05-18 |
| FR2152055A5 (en) | 1973-04-20 |
| NL7211930A (en) | 1973-03-06 |
| US3869602A (en) | 1975-03-04 |
| CA979074A (en) | 1975-12-02 |
| DE2243449A1 (en) | 1973-03-22 |
| JPS5116091B2 (en) | 1976-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |