| Theme |
Imaging Diagnostics of Liver Disease |
| Title |
Diagnosis of Liver Diseases with Tissue Harmonic Imaging |
| Author |
Shoichi Matsutani |
The Department of Medicine and Clinical Oncology, Chiba University Graduate School |
| Author |
Hitoshi Maruyama |
The Department of Medicine and Clinical Oncology, Chiba University Graduate School |
| Author |
Taro Akiike |
The Department of Medicine and Clinical Oncology, Chiba University Graduate School |
| Author |
Hiromasa Nomoto |
The Department of Medicine and Clinical Oncology, Chiba University Graduate School |
| Author |
Hiromitsu Saisho |
The Department of Medicine and Clinical Oncology, Chiba University Graduate School |
| Author |
Masao Ohto |
National Institute of Radiation Sciences |
| [ Summary ] |
Tissue harmonic imaging is a newly developed technology in the field of diagnostic ultrasonography. It is based on recent progress in signal processing for non-liner propagation of ultrasound in living tissue. The images are superior to conventional B-mode echograms in both contrast and lateral resolution of the ultrasound beam, using a second, harmonic ultrasoundemission to produce an echogram. Furthermore, tissue harmonic imaging is able to reduces noise echos produced by the side lobe of the ultrasound beam or multiple reflections. From these characteristics, tissue harmonic imaging is expected to improve the diagnostic ability of ultrasound for diffuse liver diseases and liver tumors, by producing liver surface images and localization of tumor echograms which will be clearer than conventional B-mode ultrasound images. Tissue harmonic imaging will be come a standard technology in the advance of the diagnostic ultrasound field. |