Tomosynthesis, making the invisible visible

Shimadzu realized the world’s first practical use of Tomosynthesis on RF-table systems, SONIALVISION series, with the latest Flat Panel Detector and advanced Digital Imaging Technology.

This state-of-the-art imaging technology offers high quality multi-slice images to visualize the part which was invisible by the conventional plain radiography, in a simple and quick workflow, and at low exposure dose. Therefore, Tomosynthesis is now spotlighted more and more in the world.

What is “Tomosynthesis” ?

”Tomosynthesis” is a coined term from ‘Tomography’ and ‘Synthesis’.

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. It provides multiple slice images reconstructed from its volume data.

Standing position Tomosynthesis image of weight-loaded knee joints

What will be realized by Tomosynthesis ?

Reduce Examination Time and X-ray Dose

Since the images of a specific cross section can be reconstructed from a single low dose tomography scan motion only, this technique requires less time and less x-ray dose to obtain multiple slice images than conventional linear tomography. 

The short examination time would be very helpful to the stressed or immobile patients.


Position free tomography

Tomosynthesis by SONIALVISION 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, which is not possible by CT scanners. It helps expand the examination range and remedy possibility.


High Resolution Images with Minimal Metal Artifacts

The combination of high resolution FPD and our advanced imaging technology realizes excellent resolution Tomosynthesis images which are highly appreciated in the diagnoses of a micro-fracture etc. 
Another key clinical benefit is that Tomosynthesis images has minimal influence from the metal artifacts that are usually seen on CT images. Therefore, Tomosynthesis is nowadays spotlighted in the orthopedics for the follow-up diagnoses to the patient with metal implants.

Precise Fracture Diagnosis
(Courtesy of Okitama Public General Hospital)

Clear visualization for callus formation
(Courtesy of Nara City Hospital)

Reconstruction Method

Tomosynthesis was perceived as part of CT scanning, and a reconstruction method resulting from enhancement of Filtered Back Projection (FBP) was introduced.

Reconstruction Method

T-smart Tomosynthesis-Shimadzu Metal Artifact Reduction Technology

“T-smart” is our latest and highest grade tomosynthesis technology evolved further with iterative reconstruction method.
T-smart provides even clearer Tomosynthesis images suppressing the artifacts around metal objects even further. This application will be a great help in the orthopedics especially for the patients with metal implants or fixators, as it enables you to diagnose the status of the boundary between bone and implant very exactly.

Follow up of after THA(Total Hip Arthroplasty)
(Courtesy of Kanazawa University Hospital)

* Tomosynthesis is a premium option for SONIALVISION-series.



Tomosynthesis acquisition movement movie.

Yoshihiro Hirakawa1 (currently at Osaka Social Medical Center), Tomoya Manaka1,Yoichi Ito2,
Yukihide Minoda1,Koichi Ichikawa1, and Hiroaki Nakamura1
Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine1,
Ito Clinic, Osaka Shoulder Center2
Tetsuta Izumi1, Ayano Sakamoto1, Minoru Kawamata1, Yasuhiko Yamane1, Akitoshi Yoneda1, Hideaki Okamoto1, Kazuya Oshima2, Katsuyuki Nakanishi1
Osaka International Cancer Institute, Diagnostic and Interventional Radiology Section1
Osaka International Cancer Institute, Orthopedic Surgery (Musculoskeletal Oncology) and Rehabilitation Section2
Ryo Tamaki, Keiji Wada, Mitsuru Yui, Daisuke Numaguchi, Ken Okazaki
Department of Orthopaedic Surgery, Tokyo Women's Medical University
Takayuki Baba
Department of Diagnostic Imaging, Imamura General Hospital
Hisashi Koga1, Mikihiro Kondo1, Takeshi Kaneko2, Junichi Yokosuka1,
Takanao Shimabukuro1, Yuichi Takano1, Hirohiko Inanami1,2
Iwai Orthopaedic Medical Hospital1, Inanami Spine and Joint Hospital2
Yuya Otake1, Mitsutoshi Moriya1,2, Wataru Saito1, Masayuki Miyagi1, Kensuke Fukushima1, Takayuki Imura1, Gen Inoue1, Katsufumi Uchiyama1, Kenji Kuroda2, Masashi Takaso1
Department of Orthopaedic Surgery, Kitasato University School of Medicine1, Kurokouchi Hospital2
Yoshihiro Shibata1, Isato Sekiya1, Naoya Takada1, Yuka Mukofujiwara1, Yoshikazu Hayashi1, Yasuhiro Katsuda1, Akira Kondo1, and Hirotaka Iguchi2
Department of Orthopedic Surgery, Kainan Hospital1, Department of Arthroplastic Medicine, Nagoya City University2
Satomi Nagamine, Shuya Ide, Tomonori Tajima, Shinsuke Someya, Motoki Sonohata, and Masaaki Mawatari
Department of Orthopaedic Surgery, Faculty of Medicine, Saga University
Koichi Hara1(currently at Hara Orthopaedic Surgery clinic), Shuta Shin1, and Nobuhiro Kaku2
Department of Orthopaedic Surgery, Yufuin Hospital1 and Department of Orthopaedic Surgery, Oita University2
Hideki Yamaguchi, Yoshitami Murayama, Seiji Otsuka, Kenji Ogawa
Department of Radiology, Nippon Koukan Hospital
Department of Internal Medicine, Nippon Koukan Hospital
Shuya Ide, M.D.
Department of Arthroplasty, Department of Orthopaedic Surgery, Faculty of Medicine,
Saga University
Tadahiko Ohtsuru, M.D.
Department of Orthopaedic Surgery, Tokyo Women's Medical University
Mr. Yasuyuki Morita
Department of Central Radiology, Tokyo Women's Medical University Hospital
Mr. Shota Horitake
Department of Radiology, Iida Hospital
Yoshiharu Kato, M.D., Ph.D.
Professor and Chairman
Department of Orthopaedic Surgery, Tokyo Women's Medical University
Yixin Zhou, M.D., Ph.D.
Professor and Chair Dept. of Adult Reconstructive Surgery
Beijing Jishuitan Hospital, the 4th Clinical College of PKU
Satoshi Fujita, M.D.
Department of Orthopedics, Mitsubishi Kyoto Hospital
Mr.Yoshihiro Uchida
Department of Radiological Technology, Mitsubishi Kyoto Hospital
Takehiro Izumo, M.D., Ph.D., FCCP
Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital
Dr.Teppei Omori
Department of Gastroenterological Medicine,Tokyo Women's Medical University Hospital
Mr. Takeshi Kuzuwa
Department of Radiology, Nara City Hospital
Shuichiro Ohno, M.D., Ph.D.
Spine Center, Seirei Hamamatsu General Hospital
Mr. Takashi Nonaka
Department of Radiology, Fussa Hospital
Mr. Masahiro Iwama
Diagnostic Imaging Center, Aizawa Hospital
Dr. Hogaku Gen
Chiba Central Medical Center
Deputy Director, Director of Orthopedics, Director of Spine Center
Mr.Ryohei Fukui
Division of Clinical Radiology, Tottori University Hospital
Mr.Manabu Takehara
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
Ms.Kaoru Shimizu
Department of Radiology, National Cancer Center Hospital East
Masami Ito, MD
Division of Thoracic Oncology, National Cancer Center Hospital East
Mr. Shouta Miura
Iwate Medical University Hospital,Central Department of Radiology
Kazuhiro Mori
Medical Systems Division, Shimadzu Corporation