FR2260144A2 - Short-wave radiation absorption measuring equipment - processes data to obtain set of convoluted terms - Google Patents

Short-wave radiation absorption measuring equipment - processes data to obtain set of convoluted terms

Info

Publication number
FR2260144A2
FR2260144A2 FR7502915A FR7502915A FR2260144A2 FR 2260144 A2 FR2260144 A2 FR 2260144A2 FR 7502915 A FR7502915 A FR 7502915A FR 7502915 A FR7502915 A FR 7502915A FR 2260144 A2 FR2260144 A2 FR 2260144A2
Authority
FR
France
Prior art keywords
terms
frequency
convoluted
short
measuring equipment
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.)
Granted
Application number
FR7502915A
Other languages
English (en)
French (fr)
Other versions
FR2260144B2 (enExample
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.)
EMI Ltd
Original Assignee
EMI Ltd
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 EMI Ltd filed Critical EMI Ltd
Publication of FR2260144A2 publication Critical patent/FR2260144A2/fr
Application granted granted Critical
Publication of FR2260144B2 publication Critical patent/FR2260144B2/fr
Granted 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
    • A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4064—Arrangements for generating radiation specially adapted for radiation diagnosis specially adapted for producing a particular type of beam
    • A61B6/4071—Pencil beams
    • 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]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T12/00—Tomographic reconstruction from projections
    • G06T12/20—Inverse problem, i.e. transformations from projection space into object space
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2211/00—Image generation
    • G06T2211/40—Computed tomography
    • G06T2211/421—Filtered back projection [FBP]

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • General Physics & Mathematics (AREA)
  • Pulmonology (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
FR7502915A 1974-01-31 1975-01-30 Short-wave radiation absorption measuring equipment - processes data to obtain set of convoluted terms Granted FR2260144A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB456474 1974-01-31
GB1994074 1974-05-07

Publications (2)

Publication Number Publication Date
FR2260144A2 true FR2260144A2 (en) 1975-08-29
FR2260144B2 FR2260144B2 (enExample) 1979-05-18

Family

ID=26239229

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7502915A Granted FR2260144A2 (en) 1974-01-31 1975-01-30 Short-wave radiation absorption measuring equipment - processes data to obtain set of convoluted terms

Country Status (3)

Country Link
JP (1) JPS50109783A (enExample)
FR (1) FR2260144A2 (enExample)
NL (1) NL7501206A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333253A1 (fr) * 1975-11-25 1977-06-24 Philips Med Syst Inc Procede et dispositif pour pratiquer la tomographie a l'aide d'un ordinateur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0119932Y2 (enExample) * 1978-01-19 1989-06-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333253A1 (fr) * 1975-11-25 1977-06-24 Philips Med Syst Inc Procede et dispositif pour pratiquer la tomographie a l'aide d'un ordinateur

Also Published As

Publication number Publication date
JPS50109783A (enExample) 1975-08-29
NL7501206A (nl) 1975-08-04
FR2260144B2 (enExample) 1979-05-18

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