Improvement of image quality using amplitude-based respiratory gating in PET-computed tomography scanning.

Objectives: This study sought to provide data supporting the expanded clinical use of respiratory gating by assessing the diagnostic accuracy of breathing motion correction using amplitude-based respiratory gating.

Methods: A respiratory movement tracking device was attached to a PET-computed tomography scanner, and images were obtained in respiratory gating mode using a motion phantom that was capable of sensing vertical motion. Specifically, after setting amplitude changes and intervals according to the movement cycle using a total of nine combinations of three waveforms and three amplitude ranges, respiratory motion-corrected images were reconstructed using the filtered back projection method.

[Septic Shock in Pyogenic Liver Abscess: Clinical Considerations].

Background/aims: Pyogenic liver abscess (PLA) is a life-threatening condition, despite advances in diagnostic technology and strategies for treatment. A strong predictor of mortality in this condition is septic shock. This study describes clinical, biochemical, and radiologic features in patients with PLA with or without septic shock, with the intent of describing risk factors for septic shock.

[Comparison of malnutrition risk between patients with liver cirrhosis and viral hepatitis carrier: a single center study].

Background/aims: It is well-known that patients with chronic liver disease commonly have nutritional deficiency. In the present study, we investigated the differences in malnutrition risk between patients with liver cirrhosis and viral hepatitis carrier.

Methods: Patients with chronic liver disease who have been hospitalized at Konyang University Hospital from May 2012 to April 2013 were analyzed retrospectively.

[A case of Crohn's disease accompanied by Peutz-Jeghers syndrome].

Peutz-Jeghers syndrome is an autosomal dominant inherited disorder characterized by multiple gastrointestinal hamartomatous polyps and mucocutaneous pigmentation. Peutz-Jeghers syndrome has an incidence of approximately 1 in 25,000 to 300,000 births. Crohn's disease is a chronic inflammatory bowel disease that typically manifests as regional enteritis with its incidence ranging from 3.