A ventilation agent that provides good quality lung images, which is cheap, easy to use and
non-toxic, with a low radiation dose, has long been sought. Technegas, an ultrafine aerosol …

A comparison of “Technegas” and xenon-133 was performed in 50 patients presenting with
a clinical diagnosis of pulmonary embolus. All patients underwent studies with xenon …

A new method of producing aerosols (technegas) in which 99 Tc m is bound to carbon
atoms (99 Tc mC) was evaluated by comparing 99 Tc mC images with those obtained with …

Radioactive gas or technetium-99m aerosols are used to perform pulmonary ventilation
scintigraphy. The aim of this study was to compare three radiopharmaceuticals …

Technegas is an ultra‐fine dry dispersion of 99mTc‐labelled carbon with particle size of ap
proximately 0.005 μn. Because of this small size, penetration characteristics are gas‐like …

Pulmonary embolism remains a major cause of morbidity and mortality, being responsible
for an estimated 200,000 deaths per annum in the USA and 21,000 per annum in the UK …

In the diagnosis of pulmonary embolism, perfusion lung scintigraphy offers high sensitivity
but low specificity. The specificity can be significantly increased by the use of combined …

A new Tc-99m labeled carbon particle aerosol (“Technegas”) has been developed for lung
ventilation scanning. This is the first reported clinical study of this agent in the United States …

Krypton-81m gas, by virtue of its imaging characteristics, is often considered the “gold
standard” for ventilation scintigraphy but its use is restricted by its high cost and limited …

MATERIALS AND METHODS Two of the original four centers from the previous prospective
multicenter study participated in the cur rent retrospective evaluation. All 30 patients from the …