Quantitative evaluation in Kr-81m gas ventilation study
نویسندگان
چکیده
منابع مشابه
Regional ventilation studies with Kr-81m and Xe-133: a comparative analysis.
Krypton-81m and Xe-133 ventilation scintigrams, and particulate per fusion scintigrams with Tc-99m, were obtained on the same day in 41 pa tients. Of 14 studies demonstrating pulmonary embolism, Kr-81m corn plernented the perfusion study better than Xe-133 in seven and was judged essential for that diagnosis in two. Xenon-133 was better in none. On the other hand, in 29 studies with obstructive...
متن کاملCan dynamic krypton-81m imaging separate regional ventilation and volume?
This study explores the assumption that 81mKr static images represent regional ventilation. Dynamic acquisition of 81mKr ventilation images permits creation of time-activity curves and the possible separation of the confounding influences of ventilation and volume. By using a two-compartment gas mixing lung phantom, the results demonstrate that both total and tidal 81mKr are closely related to ...
متن کاملQuantitative risk management in gas injection project: a case study from Oman oil and gas industry
The purpose of this research was to study the recognition, application and quantification of the risks associated in managing projects. In this research, the management of risks in an oil and gas project is studied and implemented within a case company in Oman. In this study, at first, the qualitative data related to risks in the project were identified through field visits and extensive interv...
متن کاملTomography of regional ventilation and perfusion using krypton 81m in normal subjects and asthmatic patients.
Single photon emission computed tomography, a rotating gamma camera, and continuous inhalation or infusion of krypton 81m (half life 13 seconds) were used to measure regional ventilation (V), perfusion (Q), and ventilation-perfusion (V/Q) ratios in five normal subjects in supine, prone, and lateral decubitus postures and in three asthmatic patients (supine posture only) before and after inhalat...
متن کاملSonic aerosol therapy to target maxillary sinuses.
AIM Intranasal aerosol administration of drugs is widely used by ENT specialists. Although clinical evidence is still lacking, intranasal nebulization appears to be an interesting therapeutic option for local drug delivery, targeting anatomic sites beyond the nasal valve. The sonic nebulizer NL11SN associates a 100Hertz (Hz) sound to the aerosolization to improve deposition in the nasal/paranas...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Okayama Igakkai Zasshi (Journal of Okayama Medical Association)
سال: 1988
ISSN: 0030-1558,1882-4528
DOI: 10.4044/joma1947.100.11-12_989