Quantification of Image Studies Obtained with a Scintillation (Anger) Camera

Multidetector instrumentation and data analysis for regional pulmonary function studies using xenon-133

“…Xenon-l33 radiospirometry techniques vary greatly between laboratories. At the present time our routine assessment of regional pulmonary function embodies the techniques of Miller, Khalil-Ali andHowe (1970) andMilic-Emili (1971). Data are being gathered concerning the regional distribution of ventilation and perfusion in disease situations and it appears likely that t'he various patterns of response may be of considerable value in the early diagnosis and subsequent follow-up of patients with various pulmonary problems.…”

“…Although gamma camera computer systems have been developed to overcome these problems (e.g. Iinuma, Tanaka, Hiramoto, Ishihara, Rlatsumoto, Fukuhisa andYashiro 1971, Smith 1971), considerable processing power is st'ill required for quantitative interpretation (Loken, Ponto andKush 1970, RfacIntyre, Inkley, Roth, Drescher andIshii 1970. ) A further consideration for quantitative evaluations of pulmonary function is that, while spatial resolutions of about 1.4 cm can be realized close to the collimator face, resolution is degraded to 6 cm or more at distances of 25 cm in tissue.…”

Quantification of Lung Scintigrams

“…The lung scintigraphy permits us to study the pulmonary circulation of the lungs by obtaining a visual image [1, 2] which gives only static infor mation about the regional distribution of pulmonary arterial blood flow, the need to complement this visual information with objective, functional information was felt very early [3][4][5] because of the subjective and static nature of the information provided by visual images by themselves [6], In the medical literature there are references dealing with diverse ways to quantitate the lung scintigrams [7][8][9]; the present report deals with a simple method to obtain objective information about the pulmonary cir culation.…”

Αιμοδυναμικαι Μεταβολαι Της Κυκλοφοριας Του Ηπατος Επι Ηπατικης Κιρρω- Σεως Διαραδιοισοτοπικης Μεθοδου Τη_ι Χρησει Της Γ - Camera

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