Nuclear Medicine & Radiation Therapy

Ken Takeda

Publications

• Research Article
  Investigation of Correction Method of Recovery Effect and Motion Blur for SUV Quantification in FDG PET/CT in Patients with Early Lung Cancer
  Author(s): Noriyuki Kadoya, Yukio Fujita, Kengo Ito, Suguru Dobashi, Ken Takeda, Kazuma Kishi, Takaya Yamamoto, Rei Umezawa, Toshiyuki Sugawara, Tomohiro Kaneta, Haruo Matsushita and Keiichi JinguNoriyuki Kadoya, Yukio Fujita, Kengo Ito, Suguru Dobashi, Ken Takeda, Kazuma Kishi, Takaya Yamamoto, Rei Umezawa, Toshiyuki Sugawara, Tomohiro Kaneta, Haruo Matsushita and Keiichi Jingu
  
  Objective: We investigated the effects of partial volume and respiratory motion using a National Electrical Manufacturers Association (NEMA) phantom and proposed a simple method for correction of maximum standardized uptake value (SUVmax) for respiratory motion in early lung cancer. Methods: The maximum recovery coefficient (RC) in static mode were measured using the NEMA phantom and a dynamic moving platform. The phantom on the platform was either at rest or moving sinusoidally along the longitudinal axis of the scanner to simulate respiratory motion. We also calculated estimated RC using our approximation. Results: RC of the sphere of 28mm in diameter decreased from 0.96 to 0.80 and 0.41 with 20 and 50 mm of motion amplitude, respectively. For the sphere of 10 mm in diameter, RC was decreased from 0.40 to 0.18 and 0.08 with 20 and 50 mm of motion amplitude, respectively. Our results.. Read More»
  DOI: 10.4172/2155-9619.1000162

  Abstract PDF