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Usefulness of model-based iterative reconstruction in semi-automatic volumetry for ground-glass nodules at ultra-low-dose CT: a phantom study.
Maruyama, Shuki; Fukushima, Yasuhiro; Miyamae, Yuta; Koizumi, Koji.
Afiliación
  • Maruyama S; Division of Clinical Radiology Service, Kyoto University Hospital, 54 Kawaharacho, Syogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan. smaruym@kuhp.kyoto-u.ac.jp.
  • Fukushima Y; Division of Clinical Radiology Service, Kyoto University Hospital, 54 Kawaharacho, Syogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan.
  • Miyamae Y; Department of Radiological Technology, Radiological Diagnosis, National Cancer Center Hospital, Tokyo, Japan.
  • Koizumi K; Division of Clinical Radiology Service, Kyoto University Hospital, 54 Kawaharacho, Syogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan.
Radiol Phys Technol ; 11(2): 235-241, 2018 Jun.
Article en En | MEDLINE | ID: mdl-29429016
This study aimed to investigate the effects of parameter presets of the forward projected model-based iterative reconstruction solution (FIRST) on the accuracy of pulmonary nodule volume measurement. A torso phantom with simulated nodules [diameter: 5, 8, 10, and 12 mm; computed tomography (CT) density: - 630 HU] was scanned with a multi-detector CT at tube currents of 10 mA (ultra-low-dose: UL-dose) and 270 mA (standard-dose: Std-dose). Images were reconstructed with filtered back projection [FBP; standard (Std-FBP), ultra-low-dose (UL-FBP)], FIRST Lung (UL-Lung), and FIRST Body (UL-Body), and analyzed with a semi-automatic software. The error in the volume measurement was determined. The errors with UL-Lung and UL-Body were smaller than that with UL-FBP. The smallest error was 5.8% ± 0.3 for the 12-mm nodule with UL-Body (middle lung). Our results indicated that FIRST Body would be superior to FIRST Lung in terms of accuracy of nodule measurement with UL-dose CT.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Dosis de Radiación / Procesamiento de Imagen Asistido por Computador / Tomografía Computarizada por Rayos X / Fantasmas de Imagen / Modelos Teóricos Idioma: En Revista: Radiol Phys Technol Asunto de la revista: BIOFISICA / RADIOLOGIA Año: 2018 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Japón
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Dosis de Radiación / Procesamiento de Imagen Asistido por Computador / Tomografía Computarizada por Rayos X / Fantasmas de Imagen / Modelos Teóricos Idioma: En Revista: Radiol Phys Technol Asunto de la revista: BIOFISICA / RADIOLOGIA Año: 2018 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Japón