FR2663530A1 - Improvement to the device for equipping the head of a densitometer with reference cells and measurement cells - Google Patents

Improvement to the device for equipping the head of a densitometer with reference cells and measurement cells Download PDF

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Publication number
FR2663530A1
FR2663530A1 FR9011728A FR9011728A FR2663530A1 FR 2663530 A1 FR2663530 A1 FR 2663530A1 FR 9011728 A FR9011728 A FR 9011728A FR 9011728 A FR9011728 A FR 9011728A FR 2663530 A1 FR2663530 A1 FR 2663530A1
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Prior art keywords
cells
measurement
head
densitometer
equipping
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FR9011728A
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French (fr)
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FR2663530B1 (en
Inventor
Cicolella Guilhem
Marcel
Paul
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CICOLELLA GUILHEM
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CICOLELLA GUILHEM
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    • 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
    • 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
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • 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
    • A61B6/4233—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using matrix 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
    • A61B6/50—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
    • 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
    • A61B6/501—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 head, e.g. neuroimaging or craniography

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

Abstract

The invention relates to a device which makes it possible to avoid the angular loss of the exploratory field by increasing the number of photoelectric X-ray cells which constitute the head of a densitometer. This device consists of 27 reference cells divided into 3 compartments of 9 cells, and 434 measurement cells divided into 62 compartments of 7 cells. The device according to the invention is intended in particular for the exploration of the cervical and intestinal zones of the organism.

Description

La présente invention consiste en un dispositif demi-sphérique comportant des cellules de référence et de mesure photoélectriques à rayons x visant à perfectionner le champ d'exploration de l'imagerie médicale produit par le tête d'un tomodensitomètre plus connu sous le nom de Scanner.The present invention consists of a hemispherical device comprising x-ray photoelectric reference and measurement cells aimed at perfecting the field of exploration of medical imaging produced by the head of a CT scanner better known under the name of Scanner. .

C'est le (11 11264 RHUMB, soit la trente deuxième partie de la Rose des
Vents qui sert actuellement de modèle au découpage numérique as cellules.It is the (11 11264 RHUMB, the thirty second part of the Rose des
Winds which is currently used as a model for digital division as cells.

Il en résulte la distribution suivante:
Savoir: 11-ELLULES de référence équivalentes ~ au nombre de degrés
compris dans un rhumb.This results in the following distribution:
Knowledge: 11-ELLULES of equivalent reference ~ to the number of degrees
included in a rhumb.

- 1024 CELLULES de mesure, correspondantes au carré de ces memes
trente deux parties.- 1024 MEASURING CELLS, corresponding to the square of these memes
thirty two parts.

L'inconvénient de ce système repose sur le fait que le nombre
de degrés et de minutes ne sont pas égaux dans un Rhumb.The disadvantage of this system is that the number
degrees and minutes are not equal in a Rhumb.

En effet,pour avoir une répartition optimale des cellules il
faut que les c3culs reposent non sur le Rhumb mais sur la
formule mathématique du crible de la sphère:

Figure img00010001
Indeed, to have an optimal distribution of cells it
The c3culs must be based not on the Rhumb but on the
mathematical formula of the sphere screen:
Figure img00010001

L';écart numérique cellulaire qui en résulte est alors pour la demi-sphère de: (2 436) * Cii' e 1024) = 454 cellules
2
Soit un pourcentage de: 458 = 11718
De le mëme façon cela entraine une perte angulaire du champ d'exploration égale a:
1800 - 0 . 112eu4 ) 6-9 58f 26
11718
Ces marges sont une chose conséquente lorsque l'on sait que
le balayage de la tête d'un tomodensitomètre porte essentiel
lement sur l'exploration des "tissus mous" internes d'ordre cervical et intestinal et que ces zones contrairement à celles osseuses
absorbent particulièrement les rayons X
Le dispositif selon l'invention se caractérise par une augmentation et une nouvelle distribution des cellules de référence et de mesure permettant de remédier à l'insuffisance du champ d'exploration de l'imagerie médicale.The resulting cellular numerical difference is then for the half-sphere of: (2,436) * Cii 'e 1024) = 454 cells
2
Or a percentage of: 458 = 11,718
In the same way, this leads to an angular loss of the field of exploration equal to:
1800 - 0. 112eu4) 6-9 58f 26
11718
These margins are a significant thing when you know that
scanning the head of a vital door CT
Lately on the exploration of the internal "soft tissues" of cervical and intestinal order and that these areas unlike those bony
particularly absorb X-rays
The device according to the invention is characterized by an increase and a new distribution of the reference and measurement cells making it possible to remedy the insufficiency of the field of exploration of medical imaging.

S'agissant ici de résoudre un problème bicarré applicable à une surface demi-sphérique,le nombre de degrés et de minutes doivent Gtre égaux entre eux et justitier la numération cellulaire de
ré té rance et de mesure.When it comes to solving a two-sided problem applicable to a semi-spherical surface, the number of degrees and minutes must be equal to each other and justify the cell count of
re tance and measurement.

Soit: 180# . 2/ = 11# 11# 53"
434
En conséquence de quoi, la tête d'un tomodensitomètre devra
pour etre pleinement opérationnelle comporter 27 cellules de
référence et 434 cellules de mesure.Or: 180 #. 2 / = 11 # 11 # 53 "
434
As a result, the head of a CT scanner will need to
to be fully operational, include 27 cells
reference and 434 measurement cells.

des cellules étant divisées en compartients afin de mieux
être sériées.cells being divided into compartments in order to better
be serialized.

Les cellules de réterence seront ainsi divisées en 3 comparti
ments de 9 alvéoles chacun.The retention cells will thus be divided into 3 comparti
9 cells each.

Et les cellules de mesure en 62 compartiments de / alvéoles
chacun.And the measuring cells in 62 compartments of / alveoli
each.

Le dispositif de la présente invention est particulièrement
destiné à l'exploration des zones cervicales et intestinales de l'organisme. The device of the present invention is particularly
intended for the exploration of the cervical and intestinal zones of the body.

Claims (1)

REVENDICATIONS ~Dispositif pour équiper la toute d'un tomodensitomètre de ~ Device to equip the whole with a CT scanner cellules de référence et de mesure photoélectriques à rayons X X-ray photoelectric reference and measurement cells permettant la révélation de l'imagerie médicale, caractérisé allowing the revelation of medical imagery, characterized en ce qu'il comporte 27 cellules de référence et 434 cellules in that it has 27 reference cells and 434 cells de mesure. of measurement. t-Dispositif selon la revendication 1, caractérisé en ce que le t-Device according to claim 1, characterized in that the nombre de cellules de référence est divisé en 3 compartiments number of reference cells is divided into 3 compartments de 9 alvéoles chacun. of 9 cells each. 3~Dispositif selon la revendication I ou la revendication 2, caractérisé 3 ~ Device according to claim I or claim 2, characterized en ce que le nombre de cellules de mesure est divisé en 62 in that the number of measurement cells is divided into 62 compartiments de 7 alvéoles chacun.  compartments with 7 cells each.
FR9011728A 1990-09-24 1990-09-24 IMPROVED DEVICE FOR FITTING THE HEAD WITH A TOMODENSITOMETER WITH REFERENCE AND MEASUREMENT CELLS. Expired - Fee Related FR2663530B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9011728A FR2663530B1 (en) 1990-09-24 1990-09-24 IMPROVED DEVICE FOR FITTING THE HEAD WITH A TOMODENSITOMETER WITH REFERENCE AND MEASUREMENT CELLS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9011728A FR2663530B1 (en) 1990-09-24 1990-09-24 IMPROVED DEVICE FOR FITTING THE HEAD WITH A TOMODENSITOMETER WITH REFERENCE AND MEASUREMENT CELLS.

Publications (2)

Publication Number Publication Date
FR2663530A1 true FR2663530A1 (en) 1991-12-27
FR2663530B1 FR2663530B1 (en) 1992-09-11

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FR9011728A Expired - Fee Related FR2663530B1 (en) 1990-09-24 1990-09-24 IMPROVED DEVICE FOR FITTING THE HEAD WITH A TOMODENSITOMETER WITH REFERENCE AND MEASUREMENT CELLS.

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2034149A (en) * 1978-09-29 1980-05-29 Tokyo Shibaura Electric Co X-ray apparatus for computed tomography scanner
EP0138625A2 (en) * 1983-10-17 1985-04-24 Picker International, Inc. Radiographic system
DE3825703A1 (en) * 1988-07-28 1990-02-01 Siemens Ag Diagnostic X-ray device with rectangular detector arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2034149A (en) * 1978-09-29 1980-05-29 Tokyo Shibaura Electric Co X-ray apparatus for computed tomography scanner
EP0138625A2 (en) * 1983-10-17 1985-04-24 Picker International, Inc. Radiographic system
DE3825703A1 (en) * 1988-07-28 1990-02-01 Siemens Ag Diagnostic X-ray device with rectangular detector arrangement

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FR2663530B1 (en) 1992-09-11

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