JPS5452488A - Measuring method for calcium density of bone - Google Patents

Measuring method for calcium density of bone

Info

Publication number
JPS5452488A
JPS5452488A JP11858877A JP11858877A JPS5452488A JP S5452488 A JPS5452488 A JP S5452488A JP 11858877 A JP11858877 A JP 11858877A JP 11858877 A JP11858877 A JP 11858877A JP S5452488 A JPS5452488 A JP S5452488A
Authority
JP
Japan
Prior art keywords
bone
light
thickness
substrate
density
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.)
Pending
Application number
JP11858877A
Other languages
Japanese (ja)
Inventor
Shigeru Ishii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP11858877A priority Critical patent/JPS5452488A/en
Publication of JPS5452488A publication Critical patent/JPS5452488A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

PURPOSE:To make measurements by converting the Ca density of a bone into the thickness of a standard body, by irradiating the roentgenographs of light-and-shade images of the bone and standard body and by A/D-converting obtained electric signals before being compared by a computer. CONSTITUTION:Standard substrate 5 of Al in a right-angled triangle shape is set to a diseased part and a X-ray photograph is taken. At this time, transmitted X-rays form a light-and-shade image which corresponds to thickness. Since the quantity of transmitted light when the light-and-shade image is irradiated with light increases according to the thickness of substrate 5, electric signals are picked up from the roentgenographs via photometer 1 and A/D converted 2 before comparative calculation 3, so that the Ca density of the bone of the diseased part can be found from the value which corresponds to the thickness of Al substrate 5. Then, results are edited and typed out by typewriter 4 or shown by a histogram for accurate diagnosises.
JP11858877A 1977-10-04 1977-10-04 Measuring method for calcium density of bone Pending JPS5452488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11858877A JPS5452488A (en) 1977-10-04 1977-10-04 Measuring method for calcium density of bone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11858877A JPS5452488A (en) 1977-10-04 1977-10-04 Measuring method for calcium density of bone

Publications (1)

Publication Number Publication Date
JPS5452488A true JPS5452488A (en) 1979-04-25

Family

ID=14740291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11858877A Pending JPS5452488A (en) 1977-10-04 1977-10-04 Measuring method for calcium density of bone

Country Status (1)

Country Link
JP (1) JPS5452488A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665537A1 (en) * 1990-08-01 1992-02-07 Stone Age Method for defining a physical state of a solid body sensitive to X-ray photons, as well as a target usable for this purpose

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665537A1 (en) * 1990-08-01 1992-02-07 Stone Age Method for defining a physical state of a solid body sensitive to X-ray photons, as well as a target usable for this purpose

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