نتایج جستجو برای: lung perfusion scintigraphy

تعداد نتایج: 361201  

Journal: :Journal of Medical and Biological Engineering 2022

This study aimed to evaluate the performance of a therapeutic vibrating mesh-type nebulizer for pulmonary delivery radioaerosols lung scintigraphy in healthy subjects. Six subjects (mean age 28.7 ± 6.2 years) inhaled 2 mL Tc-99m diethylenetriaminepentaacetic acid and normal saline solution (20 mCi) via (DK010, DELBio, Taipei, Taiwan). The nebulizer’s mass median aerodynamic diameter was between...

Journal: :British heart journal 1982
M Frais E Botvinick D Shosa W O'Connell

To determine the relation between scintigraphic regions of stress-induced ischaemia and subsequent myocardial infarction, a select group of 21 patients was investigated. Each patient had undergone stress perfusion scintigraphy before myocardial infarction was recorded. After acute infarction, thallium-201 perfusion scintigraphy was performed in 16 patients (76%) and 99mTc (stannous) pyrophospha...

Journal: :Investigative radiology 2006
Francesco Molinari Christian Fink Frank Risse Siegfried Tuengerthal Lorenzo Bonomo Hans-Ulrich Kauczor

OBJECTIVES We sought to assess the agreement between lung perfusion ratios calculated from pulmonary perfusion magnetic resonance imaging (MRI) and those calculated from radionuclide (RN) perfusion scintigraphy. MATERIALS AND METHODS A retrospective analysis of MR and RN perfusion scans was conducted in 23 patients (mean age, 60 +/- 14 years) with different lung diseases (lung cancer = 15, ch...

2009
Ramesh Gadiraju Srinivas Bommireddipalli Rajani Rangray E. Gordon DePuey

Technetium-99m ((99m)Tc) sestamibi myocardial perfusion scintigraphy (MPI) is widely used for the diagnosis and assessment of prognosis in patients with suspected coronary artery disease. During these investigations, inspection of raw projected data for the purpose of quality control may occasionally yield incidental noncardiac findings that suggest the presence of another primary noncardiac di...

Journal: :Thorax 1986
N Van Zandwijk A Zwijnenburg C A Hoefnagel H R Marcuse

N-isopropyl-p[123I]iodoamphetamine, originally designed for brain scintigraphy, has been found to be retained by the normal lung and to produce excellent camera images. Ten patients with gross abnormalities on their chest radiographs due to lung cancer have been studied with this drug. The diseased parts of the lung consistently showed less uptake and these defects matched those obtained with m...

2007
Maria Lucia

Study objectives: Scintigraphic prediction of the residual pulmonary function following a lobectomy is not widely employed; its accuracy is poorly known. This study aims at determining the accuracy and the clinical value of the scintigraphic prediction of postlobectomy residual function. Patients and interventions: In this study, 41 patients with bronchial carcinoma underwent a perfusion lung s...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2007
Arnold M Strashun

Ventilation/perfusion (V/Q) lung scintigraphy, when used for the clinical determination of the presence or absence of pulmonary embolism, has been much studied by medical imagers. Inherent to a ‘‘cold-spot’’ scan targeting the normal pulmonary tissue, the deck has always been stacked against us and our specialty frequently maligned by the referring physicians as practicing ‘‘unclear’’ and not n...

Journal: :Nuclear medicine review. Central & Eastern Europe 2004
Anna Nocuń Maciej Szajner Krzysztof Gil Janina Zaorska-Rajca

BACKGROUND Arteriovenous malformations (AVM) markedly alter the distribution of the regional cerebral blood flow, as they consist of abnormal arteries and veins with no resistance vessels between them. The aim of this study was to the evaluate diagnostic utility of cerebral perfusion scintigraphy (dynamic phase and SPECT) in patients with AVM. MATERIAL AND METHODS Nineteen patients were exami...

2016
Nao Sasaki Jun Sasaki Juan Carlos G Muniz

Background Phase contrast magnetic resonance (PCMR) has been shown to provide accurate measurement of differential branch pulmonary artery (BPA) flow in patients with congenital heart disease when compared to the gold standard, lung perfusion scintigraphy (LPS). Although most studies have compared the ratio of net BPA flow volume (NFV) to LPS, one study found that forward flow volume (FFV) corr...

Journal: :The Medical clinics of North America 2003
Amjad AlMahameed John R Bartholomew

A 62-year-old man with a past medical history notable for hypertension, osteoarthritis, and calf deep vein thrombosis at age 55 following a total hip arthroplasty presents to the emergency department with acute-onset dyspnea and right-sided pleuritic chest pains. His medications consist of a calcium channel blocker and a COX-2 inhibitor. Pretest clinical suspicion for pulmonary embolism (PE) is...

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