Automated quantitative analysis of ventilation-perfusion lung scintigrams
An automated computer analysis of ventilation (Kr-81m) and perfusion (Tc-99m) lung images has been devised that produces a graphical image of the distribution of ventilation and perfusion, and of ventilation-perfusion ratios. The analysis has overcome the following problems: the identification of the midline between two lungs and the lung boundaries, the exclusion of extrapulmonary radioactivity, the superimposition of lung images of different sizes, and the format for presentation of the data. Therefore, lung images of different sizes and shapes may be compared with each other. The analysis has been used to develop normal ranges from 55 volunteers. Comparison of younger and older age groups of men and women show small but significant differences in the distribution of ventilation and perfusion, but no differences in ventilation-perfusion ratios.
- Research Organization:
- Charing Cross Hospital, London, England
- OSTI ID:
- 6808153
- Journal Information:
- J. Nucl. Med.; (United States), Vol. 25:5
- Country of Publication:
- United States
- Language:
- English
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EMBOLI
DIAGNOSIS
KRYPTON 81
SCINTISCANNING
TISSUE DISTRIBUTION
LUNGS
TECHNETIUM 99
ALBUMINS
AUTOMATION
ISOMERIC NUCLEI
MAN
PERFUSED TISSUES
SEX DEPENDENCE
ANIMAL TISSUES
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
COUNTING TECHNIQUES
DIAGNOSTIC TECHNIQUES
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
EVEN-ODD NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KRYPTON ISOTOPES
MAMMALS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
PRIMATES
PROTEINS
RADIOISOTOPE SCANNING
RADIOISOTOPES
RESPIRATORY SYSTEM
SECONDS LIVING RADIOISOTOPES
TECHNETIUM ISOTOPES
TISSUES
VERTEBRATES
YEARS LIVING RADIOISOTOPES
550601* - Medicine- Unsealed Radionuclides in Diagnostics