GB1370091A - Densitometers - Google Patents
DensitometersInfo
- 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
Links
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 abstract 3
- 230000005251 gamma ray Effects 0.000 abstract 2
- 230000000241 respiratory effect Effects 0.000 abstract 2
- 229910052770 Uranium Inorganic materials 0.000 abstract 1
- 230000000747 cardiac effect Effects 0.000 abstract 1
- 235000009518 sodium iodide Nutrition 0.000 abstract 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 1
- 230000002792 vascular Effects 0.000 abstract 1
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.
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)
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)
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 |
-
1970
- 1970-09-22 GB GB4517270A patent/GB1370091A/en not_active Expired
-
1971
- 1971-09-21 US US00182414A patent/US3845308A/en not_active Expired - Lifetime
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 |