FR1458122A - Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer - Google Patents

Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer

Info

Publication number
FR1458122A
FR1458122A FR6567A FR6567A FR1458122A FR 1458122 A FR1458122 A FR 1458122A FR 6567 A FR6567 A FR 6567A FR 6567 A FR6567 A FR 6567A FR 1458122 A FR1458122 A FR 1458122A
Authority
FR
France
Prior art keywords
measurement
measuring
application
blood flow
exponential function
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
FR6567A
Other languages
French (fr)
Inventor
Jacques Espagno
Lucien Espagno
Chanh Trung Huynh
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.)
Societe Nationale des Petroles dAquitaine SA
Original Assignee
Societe Nationale des Petroles dAquitaine SA
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 Societe Nationale des Petroles dAquitaine SA filed Critical Societe Nationale des Petroles dAquitaine SA
Priority to FR6567A priority Critical patent/FR1458122A/en
Priority to FR32860A priority patent/FR89661E/en
Priority to FR32859A priority patent/FR89229E/en
Priority to US528592A priority patent/US3528407A/en
Priority to LU50492D priority patent/LU50492A1/xx
Priority to BE676795D priority patent/BE676795A/xx
Priority to NL6602238A priority patent/NL6602238A/xx
Priority to GB7801/66A priority patent/GB1096448A/en
Priority to DE19661573079 priority patent/DE1573079B2/en
Application granted granted Critical
Publication of FR1458122A publication Critical patent/FR1458122A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06J—HYBRID COMPUTING ARRANGEMENTS
    • G06J1/00—Hybrid computing arrangements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/026—Measuring blood flow
    • A61B5/0275—Measuring blood flow using tracers, e.g. dye dilution
    • A61B5/02755—Radioactive tracers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • G01F1/64—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by measuring electrical currents passing through the fluid flow; measuring electrical potential generated by the fluid flow, e.g. by electrochemical, contact or friction effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/7042—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter using radioactive tracers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/712—Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/30—Measuring half-life of a radioactive substance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Cardiology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Hematology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Surgery (AREA)
  • Physiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Automation & Control Theory (AREA)
  • Evolutionary Computation (AREA)
  • Fuzzy Systems (AREA)
  • Software Systems (AREA)
  • Chemical Kinetics & Catalysis (AREA)
FR6567A 1965-02-22 1965-02-22 Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer Expired FR1458122A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FR6567A FR1458122A (en) 1965-02-22 1965-02-22 Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer
FR32859A FR89229E (en) 1965-02-22 1965-09-28 Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer
FR32860A FR89661E (en) 1965-02-22 1965-09-28 Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer
LU50492D LU50492A1 (en) 1965-02-22 1966-02-18
US528592A US3528407A (en) 1965-02-22 1966-02-18 Radioactivity sensing apparatus for measuring the blood flow
BE676795D BE676795A (en) 1965-02-22 1966-02-21
NL6602238A NL6602238A (en) 1965-02-22 1966-02-22
GB7801/66A GB1096448A (en) 1965-02-22 1966-02-22 Apparatus for measuring blood flow by radio- active tracer
DE19661573079 DE1573079B2 (en) 1965-02-22 1966-02-22 CIRCUIT ARRANGEMENT FOR AN ELECTRONIC PULSE COUNTER FOR RADIOACTIVE RADIATION IN PARTICULAR FOR MEASURING THE BLOOD FLOW RATE IN AN ORGAN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6567A FR1458122A (en) 1965-02-22 1965-02-22 Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer

Publications (1)

Publication Number Publication Date
FR1458122A true FR1458122A (en) 1966-03-04

Family

ID=8571600

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6567A Expired FR1458122A (en) 1965-02-22 1965-02-22 Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer

Country Status (1)

Country Link
FR (1) FR1458122A (en)

Similar Documents

Publication Publication Date Title
CH445164A (en) Apparatus for measuring the speed of an organ
CH445868A (en) Fluid measuring device
FR1457946A (en) Volumetric measuring device
CH441132A (en) Time measuring device
CH521566A (en) Linear dimension measuring device with probe
FR89661E (en) Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer
FR1458122A (en) Apparatus for measuring the logarithmic decrement of an exponential function and its application to the measurement of blood flow by radioactive tracer
FR1507063A (en) Device for measuring the flow rate of an injection pump
FR1497415A (en) Liquid level measuring device
FR1385312A (en) Advanced device for measuring an aerodynamic factor based on static pressure measurement
FR1545689A (en) Device for measuring the volume of objects
FR1349569A (en) Device for measuring the mass flow rate of fluids
FR1501903A (en) Measuring device providing pulses of frequency proportional to the measurement
FR1490325A (en) Breast measuring device
FR1103684A (en) Device for the detection of radioactive radiations
FR1462711A (en) Apparatus for measuring an aerodynamic factor using static pressure measurement
FR1378305A (en) Device for indicating and measuring a low flow rate of circulating liquids
FR85824E (en) Device for measuring the mass flow rate of fluids
FR1496289A (en) Measuring device for determining the concentration of paramagnetic gases
CH423297A (en) Probe for continuous remote measurement of humidity in an enclosure
FR1543132A (en) Method and apparatus for measuring the flow rate of fluids
FR1325182A (en) Fluid temperature measuring device
FR1410829A (en) Method and apparatus for measuring instantaneous velocities of liquids
FR1452236A (en) Friction coefficient measuring device
FR1410671A (en) Probe for remote measurement of humidity in an enclosure