نتایج جستجو برای: lung perfusion scintigraphy

تعداد نتایج: 361201  

Journal: :iranian journal of nuclear medicine 2013
p. shanmuga sundaram subramanyam padma

deep vein thrombosis (dvt) is an important life threatening condition that is difficult to diagnose, particularly in the early stages. looking for dvt in lower limb can be considered ancillary in suspected cases of pulmonary embolism (pe) indirectly highlighting a cause and effect relationship of a single disease (i.e cause being dvt and effect is the assault on the lung vasculature). prompt an...

جوهری دها, فریبا, رسانه, سمیرا,

Background and Objective: In nuclear medicine, lung perfusion scintigraphy is performed by radiolabeled particles, 99 mTc-albumin macroaggregated. Synthesizing of the particles has some difficulties. In order to resolve this problem, chitosan microparticles were used as an alternative choice.  Materials and Methods: The qualitative control tests including: the determining particles size...

Journal: :Nuclear medicine review. Central & Eastern Europe 2002
Robert Sabiniewicz Grzegorz Romanowicz Tomasz Bandurski Maciej Chojnicki Janina Alszewicz-Baranowska Jan Ereciński Piot Lass

BACKGROUND The frequency of peripheral pulmonary artery stenosis in patients after surgical repair of tetralogy of Fallot (TOF) ranges from 20 to 40%. This can be either primary or secondary to the surgical intervention. The influence of resulting lung perfusion alterations on the life quality of patients is difficult to predict. The aim of this study was to compare the utility of the diagnosti...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2002
Marika Bajc Ulrika Bitzén Berit Olsson Valéria Perez de Sá John Palmer Björn Jonson

UNLABELLED Planar lung scintigraphy is a standard method used for the diagnosis of lung embolism, but it is hampered by the high incidence of nondiagnostic tests. Ventilation/perfusion SPECT may possibly improve this situation. The objective of this study was to compare planar lung scintigraphy with ventilation/perfusion SPECT using pigs with artificially engendered lung emboli labeled with (20...

Journal: :Respiratory care 2011
Fatma Comce Zuleyha Bingol Esen Kiyan Serhan Tanju Alper Toker Pembe Cagatay Turhan Ece

BACKGROUND In patients being considered for lung-resection surgery, quantitative perfusion scintigraphy is used to predict postoperative lung function and guide the determination of lung-resection candidacy. Vibration-response imaging has been proposed as a noninvasive, radiation-free, and simpler method to predict postoperative lung function. We compared vibration-response imaging to quantita...

Journal: :Nihon Kyobu Shikkan Gakkai zasshi 1996
Yoshiharu Ohno Hiroto Hatabu Takanori Higashino Daisuke Takenaka Hirokazu Watanabe Yoshihiro Nishimura Masahiro Yoshimura Kazuro Sugimura

OBJECTIVE The purpose of this study was to determine the capability of dynamic perfusion MRI as an alternative to pulmonary perfusion scintigraphy for prediction of postoperative lung function in patients with lung cancer. SUBJECTS AND METHODS. Sixty patients with lung cancer (35 men, 25 women) underwent dynamic perfusion MRI, perfusion scintigraphy, and preoperative and postoperative pulmonary...

Journal: :JCPSP. Journal of the College of Physicians & Surgeons Pakistan 2021

ABSTRACT       The clinical manifestations of coronavirus disease 2019 (COVID-19)-associated pneumonia show a wide range variations. It ranges from mild hypoxemia without significant signs respiratory distress, to rapid clinically deteriorating course with severe hypoxemia. Unexplained hypoxemia, associated platypnea, triggers the possibility ventilation-perfusion (V/Q) mismatch, ranging intrap...

Journal: :Circulation 2002
Sohrab Fratz John Hess Markus Schwaiger Stefan Martinoff Heiko C Stern

BACKGROUND Quantitative evaluation of pulmonary perfusion using lung perfusion scintigraphy in patients with atriopulmonary anastomosis (APA) or total cavopulmonary connection (TCPC) or partial cavopulmonary connection (PCPC) is difficult because of preferential draining of the venae cavae to one lung. Scintigraphy is the gold standard. Phase-velocity MRI (PV-MRI) is a new technique for determi...

2016
Biao Si Zhao-sheng Luan Tong-jian Wang Yan-song Ning Na Li Meng Zhu Zhong-min Liu Guang-hong Ding Bin Qiao

The aim of the present study was to determine the distribution of lung blood in a modified bilateral Glenn procedure designed in our institute with lung perfusion scintigraphy. Sixteen consecutive patients who underwent modified bilateral Glenn operation from 2011 to 2014 were enrolled in the study. The control group consisted of 7 patients who underwent bidirectional Glenn shunt. Radionuclide ...

Journal: :Hellenic journal of nuclear medicine 2013
Helmut Sinzinger Margarida Rodrigues Friedrich Kummer

Ventilation/perfusion scintigraphy is the diagnostic tool of choice for detection and monitoring of pulmonary embolism. However, the knowledge on its value for other or concurrent pathologies is poor. In this review scintigraphic characteristics of the main pathologies, interpretation and artefacts are described. Together with the understanding of pathophysiology of the lung, the potential gain...

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