GB1370091A - Densitometers - Google Patents

Densitometers

Info

Publication number
GB1370091A
GB1370091A GB4517270A GB4517270A GB1370091A GB 1370091 A GB1370091 A GB 1370091A GB 4517270 A GB4517270 A GB 4517270A GB 4517270 A GB4517270 A GB 4517270A GB 1370091 A GB1370091 A GB 1370091A
Authority
GB
United Kingdom
Prior art keywords
sept
recorded
displayed
densitometer
respiratory
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
Application number
GB4517270A
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB4517270A priority Critical patent/GB1370091A/en
Priority to US00182414A priority patent/US3845308A/en
Publication of GB1370091A publication Critical patent/GB1370091A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
    • A61B6/4441—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure the rigid structure being a C-arm or U-arm
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/0813—Measurement of pulmonary parameters by tracers, e.g. radioactive tracers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/20—Measuring radiation intensity with scintillation detectors
    • 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
    • A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4208—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
    • A61B6/4258—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector for detecting non x-ray radiation, e.g. gamma radiation

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pulmonology (AREA)
  • Pathology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Optics & Photonics (AREA)
  • Physiology (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Nuclear Medicine (AREA)

Abstract

1370091 Gamma ray densitometer NATIONAL RESEARCH DEVELOPMENT CORP 15 Sept 1971 [22 Sept 1970] 45172/70 Heading G1A A densitometer for diagnostic use to indicate density variations due to respiratory and cardiac cycle movements in a human subject comprises a rotatable "U" shaped member mounted on a column upstanding from a trolley platform the member carrying a gamma ray isotope in a screened housing towards the end of one arm which through the medium of a collimator projects a Y ray beam towards a scintillator and detector mounted on the other, the density being displayed or recorded by means mounted on the platform which indicates the rate of reception of Y rays above a predetermined energy level. A Cs 137 source, and a sodium iodide scintillator are exemplified, and considerable circuitry in which the discriminating level is adjustable and which includes selectable filters for investigating, respiratory action, vascular action, or both, is shown. The output may be recorded on magnetic tape or by a pen recorder, or may be displayed on an oscilloscope. The source housing may be of uranium and a variable attenuator may be included in the beam path to compensate for mattress thickness.
GB4517270A 1970-09-22 1970-09-22 Densitometers Expired GB1370091A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4517270A GB1370091A (en) 1970-09-22 1970-09-22 Densitometers
US00182414A US3845308A (en) 1970-09-22 1971-09-21 Densitometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4517270A GB1370091A (en) 1970-09-22 1970-09-22 Densitometers

Publications (1)

Publication Number Publication Date
GB1370091A true GB1370091A (en) 1974-10-09

Family

ID=10436179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4517270A Expired GB1370091A (en) 1970-09-22 1970-09-22 Densitometers

Country Status (2)

Country Link
US (1) US3845308A (en)
GB (1) GB1370091A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053779A (en) * 1974-05-10 1977-10-11 Robert MacMillan Method and apparatus for constructing models of body sections
US4503331A (en) * 1982-04-21 1985-03-05 Technicare Corporation Non-circular emission computed tomography
USRE37474E1 (en) 1991-05-23 2001-12-18 Adac Laboratories Adjustable dual-detector image data acquisition system
US5760402A (en) * 1996-06-07 1998-06-02 Adac Laboratories Dual-head medicine imaging system with cantilevered detector heads
US6150662A (en) * 1998-04-30 2000-11-21 Adac Laboratories Gantry for medical imaging system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344275A (en) * 1967-09-26 Step - by- step
US2355066A (en) * 1944-08-08 Mobile unit with foreign body
SE335192B (en) * 1967-07-10 1971-05-17 Saab Scania Ab

Also Published As

Publication number Publication date
US3845308A (en) 1974-10-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees