Our modern flat-panel digital radiography achieves the practical use of Tomosynthesis. The new diagnostic imaging technology offers high image quality at low exposure dose.
Standing Position Tomosynthesis
image of Knee Joints
It is a new type of imaging technology that fuses cone-beam CT reconstruction with digital image processing to produce images specified cross sections from a single tomography scan. CT imaging is reconstructed.
Since an image of a specific cross section can be reconstructed from a single tomography scan, this technique would be require less time to acquire than standard tomography. The reduced exposure time would be useful where patients may be stressed or where immobilization for longer periods would normally be employed. (one-tenth the dose of CT) Besides, repeated reconstruction is possible from exposed data.
Tomosynthesis allows recording of images at any angle required for diagnosis, including a variety of table angles or with the patient standing and reverse inclined position to apply gravity. It helps expand the examination range and .remedy possibility.
The system produces images with minimal influence from the metal artifacts that are usually seen on CT images. This would be useful in follow-up examinations after orthopedic surgery where metal implants may have been inserted.
Tomosynthesis was perceived as part of CT scanning, and a reconstruction method resulting from enhancement of Filtered Back Projection (FBP) was introduced.
Tomosynthesis is an option for SONIALVISION safire17, digital fluoroscopy system with a direct conversion FPD.®
Tomosynthesis acquisition movement in a standing position. Movie(wmv file 560KB)
Dr. Hogaku Gen
Chiba Central Medical Center
Deputy Director, Director of Orthopedics, Director of Spine Center
Division of Clinical Radiology, Tottori University Hospital
Department of Radiology, Shingu Municipal Medical Center
Ms Yuki Ito, Department of Radiation, National Cancer Center Hospital East
Mr.Yuichi Nagai, Department of Radiation, National Cancer Center
Mr.Manabu Takei, Department of Radiology, Shinshu University Hospital
Mr.Masahiro Nakajima, Department of Radiology, Dokkyo Medical University Koshigaya Hospital
Mr.Kazunori Ohashi, Department of Radiology, Dokkyo Medical University Koshigaya Hospital
Mr.Kazuya Goto, Department of Radiology, NTT East Corp. Sapporo Hospital
Mr.Masanari Taniguchi , Department of Radiology, Sumitomo Hospital
Mr. Masahiro Nakajima
Radiology Division, Dokkyo Medical University Koshigaya Hospital
Department of Radiology, National Cancer Center Hospital East
Masami Ito, MD
Division of Thoracic Oncology, National Cancer Center Hospital East
Mr. Shota Miura
Iwate Medical University Hospital,Central Department of Radiology
Shimadzu Corporation, Medical Systems Division