Her technetium-99m diethylenetriaminepentaacetic acid (99mTc-DTPA) radioaerosol inhalation lung scintigraphy (May 21, 2008) revealed marked hypoventilation of the left lung and retention of the radiotracer in the right peri-hilar region, suggestive of a parenchymal process. The use of 99mTC human albumin macroaggregates (99mTC MAA) revealed no perfusion in the left lung and perfusion defects in...

Regional control of blood flow is often suggested as a mechanism for fine thermoregulatory adjustments in snakes. However, the flow of blood to different body regions at various temperatures has never been visualized to confirm this mechanism. We used (99m)technetium-labelled macroaggregated albumin ((99m)Tc-MAA), a radioactive tracer, to follow the flow of blood through the bodies of garter sn...

Key words: continuous ambulatory peritoneal dialysis confirmed a massive left-sided pleural effusion (Figure 1a). The echocardiogram revealed concentric (CAPD); end-stage renal disease (ESRD); hydro-thorax; Tc-99m macroaggregated human albumin left ventricular hypertrophy with adequate global performance , and no pericardial effusion. The abdominal (MAA) peritoneal scintigraphy sonogram showed ...

UNLABELLED Before (166)Ho radioembolization, a small batch of the same type of microspheres is administered as a scout dose instead of the conventional (99m)Tc-macroaggregated albumin ((99m)Tc-MAA). The (166)Ho scout dose provides a more accurate and precise lung shunt assessment. However, in contrast to (99m)Tc-MAA, an unintended extrahepatic deposition of this β-emitting scout dose could infl...

Radioembolization (RE) with glass microspheres (MS) loaded Yttrium-90 (90Y) has been used to treat tumors in the liver some reported success. However, assessing absorbed doses (AD) planning tumor volume (PTV) and normal (NLV) is a key problem address RE. In clinical practice, computation of 90Y activity be administered follows manufacturer’s recommendations, which do not consider specific chara...

BACKGROUND AND STUDY AIMS Chronic liver disease (CLD) can cause hepatopulmonary syndrome (HPS), defined as triad of liver disease, hypoxemia, and intrapulmonary vascular dilation (IPVD). The aim of this study was to determine the evidence of IPVD in a cohort of pediatric patients with CLD pre- and post-liver transplantation (LT). MATERIAL AND METHODS All pediatric patients with CLD listed for...

Hepatopulmonary syndrome is defined as the clinical triad of advanced liver disease, arterial deoxygenation and intrapulmonary vascular dilatation. Its pathogenesis is not completely understood. Excessive pulmonary nitric oxide production seems to be one of the factors that contribute to the intrapulmonary vascular dilatation. Other mediators such as endothelin-1 and the heme oxygenase-1/carbon...

Lung scanning has been recognized as a clinically useful technique for portraying macroscopic pulmonary perfusion defects since it was first reported by Wagner in 1964 (1 ). A number of radiopharmaceuticals have been proposed to assess pulmonary perfusion. Although 1 3 1 I imposes many limitations as a radiotagging agent, the use of iodinated macroaggregated albumin (I-MAA) has received wide ac...

SARS-CoV-2 (COVID-19) infection is a current public health problem that has been shown to cause multiple complications, including pulmonary thromboembolism. The first presented case 59-year-old woman with history of COPD, paroxysmal atrial fibrillation and COVID-19 in September 2020, consultation December 2020 for atypical chest pain suspected PE, AngioCT vessels was performed negative emboli, ...

Radioembolization (RE) with Yttrium-90 ((90)Y) microspheres is an effective treatment for unresectable liver tumors. The activity of the microspheres to be administered should be calculated based on the type of microspheres. Technetium-99m macroaggregated albumin ((99m)Tc-MAA) single photon emission computed tomography/computed tomography (SPECT/CT) is a reliable assessment before RE to ensure ...