arteriovenous malformations/albumin

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Quantification of right to left shunt through pulmonary arteriovenous malformations using 99Tcm albumin microspheres.

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Calculation of the right-to-left shunt through pulmonary arteriovenous malformations (PAVMs) is important in assessing the effect of therapeutic embolisation or surgical resection. Previously, complicated physiological techniques using radiolabelled inert gases or the 100% oxygen breathing method

Case Report: Brown Fat Accumulation of Tc-99m Macroaggregated Albumin in a Lung Perfusion Study in a Patient With Multiple Lung Arteriovenous Malformations and Right-to-Left Shunting.

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An 18-year-old man was preoperatively assessed for a varicocele and found to be hypoxemic. A Tc-99m macroaggregated albumin lung perfusion scan showed right-to-left shunting, evidenced by increased radiotracer uptake in the brain, kidneys, thyroid gland, and bilateral supraclavicular areas, a

[The scintigraphic 99mTc-MAA imaging quantification of the right-to-left shunt in a patients with multiple pulmonary arteriovenous malformation and familial teleangiectasis].

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OBJECTIVE To present a case report about 57-years-old woman with hypoxemia, multiple pulmonary arteriovenous (AV) malformations and lips teleangiectasis where the right-to-left shunt quantification was assessed by means of whole body scintigraphy with 9mTc-labelled human macro-aggregated albumin

Oxygen and 99mTc-MAA shunt estimations in patients with pulmonary arteriovenous malformations: effects of changes in posture and lung volume.

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BACKGROUND Patients with arteriovenous malformations are routinely monitored with arterial oxygen saturation (SaO2) estimations (breathing air) from which an oxygen shunt fraction can be calculated. This simple estimation has been compared with an anatomically defined estimate of the right to left

Sensitivity and specificity of radioisotope right-left shunt measurements and pulse oximetry for the early detection of pulmonary arteriovenous malformations.

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OBJECTIVE To assess the effectiveness of pulse oximetry and radioisotope measurement of right-to-left (R-L) shunt for the early detection of pulmonary arteriovenous malformations (PAVMs) in patients with hereditary hemorrhagic telangiectasia (HHT). METHODS Patients with HHT had serial measurements

Quantitative shunt imaging in the evaluation of therapeutic surgery in a patient with pulmonary arteriovenous malformation.

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A case of pulmonary arteriovenous malformation (PAVM) in a 32-year-old woman who underwent successful left upper lobectomy is presented. A whole-body technetium-99m-labeled macro-aggregated albumin scan was used to demonstrate intrapulmonary right-to-left shunt, and shunt fraction was calculated as

[An experirmental study on the preparation and drug sustained release characteristics of Pingyangmycin Albumin Microspheres].

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OBJECTIVE The aim of this study was to prepare Pingyangmycin Albumin Microspheres (PYM-AMS) for arteriovenous malformations treatment. METHODS PYM-AMS was prepared at 140 degrees C by the method of emulsification-heat solidification and its characteristics were evaluated, such as morphosis, particle

Diffuse type pulmonary arteriovenous malformations: report of one case.

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Pulmonary arteriovenous malformations are direct communications between pulmonary arteries and veins via a tortuous vascular space. They can cause severe pulmonary and neurologic complications. Most PAVMs are located in the lower lobes and can be seen on radiography or angiography. However, a few

Quantification of right-to-left shunt with (99m)Tc-labelled albumin macroaggregates and 100% oxygen in patients with hereditary haemorrhagic telangiectasia.

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Pulmonary arteriovenous malformations (PAVMs) are often associated with hereditary haemorrhagic telangiectasia (HHT). The quantification of right-to-left shunts in patients with PAVMs is important in diagnosis and follow up. Traditionally, this shunt is measured by the 100% oxygen method, in which

Review of diagnostic uses of shunt fraction quantification with technetium-99m macroaggregated albumin perfusion scan as illustrated by a case of Osler-Weber-Rendu syndrome.

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Bilateral pulmonary arteriovenous malformations (AVMs) are rare and are often associated with the hereditary hemorrhagic telangiectasia (HHT/Osler-Weber-Rendu) syndrome. We present a woman who presented with neurological symptoms due to a cerebral abscess. On further evaluation, bilateral pulmonary

[Effects of Pingyangmycin albumin microspheres on sclerostenosis of the rabbit central auricular arteries].

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OBJECTIVE The aim of this study was to investigate the mechanism of Pingyangmycin-albumin microspheres (PYM-AMS) acted on the rabbit central auricular arteries. METHODS In the study of randomized block design, 24 Japanese white rabbits were divided into 4 groups, 6 rabbits in each group. The animals

[Embolization and degradation of arteries in vivo by pingyangmycin albumin microspheres].

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OBJECTIVE To investigate the embolization effect of Pingyangmycin-albumin microspheres (PYM-AMS) on small arteries and its process of degradation in vivo. METHODS Twenty four Japanese white rabbits were randomly divided into four groups, 6 in each group. PYM hydrochloride + 0.9% NaCl, PYM + soybean

Quantification of right to left shunt at rest and during exercise in patients with pulmonary arteriovenous malformations.

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BACKGROUND Current treatment of patients with pulmonary arteriovenous malformations requires serial embolisations by means of steel coils or balloons. Measurement of right to left shunt is the most specific index of response to treatment. A new method of measuring shunt has been developed that is

Cliniconeuropathologic correlations show astroglial albumin storage as a common factor in epileptogenic vascular lesions.

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OBJECTIVE Intracerebral vascular malformations including cavernous angiomas (CAs) and arteriovenous malformations (AVMs) are an important cause of chronic pharmacoresistant epilepsies. Little is known about the pathogenetic basis of epilepsy in patients with vascular malformations. Intracerebral

Peripheral arteriovenous malformation: diagnosis and localization by intraarterial injection of technetium-99m-MAA.

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Radionuclide angiography with technetium-99m-labeled macroaggregates of albumin (99mTc-MAA), was successful in a single patient with a lower limb arteriovenous (AV) malformation, not only in diagnosis and quantitation of AV shunting, but also in localizing the site of shunting. This information

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