Soft Tissue Phantoms for Realistic Needle Insertion: A Comparative Study

Realistic three-dimensional epithelial tissue phantoms for biomedical optics.

We introduce new realistic three-dimensional tissue phantoms which can help to understand the optical properties of human epithelium as well as the optical signatures associated with the dysplasia to carcinoma sequence. The phantoms are based on a step by step multilayer reconstitution of the epithelial tissue using main components characteristic for the human epithelium. Each consecutive step ...

A Concept for Fail Safe Robotic Needle Insertion in Soft Tissue

This paper presents a concept of automatic needle placement for brachytherapy. For the success of this minimally invasive treatment, a precise and safe placement of needles inside soft tissue is fundamental. The presented concept incorporates information about the needle as well as the tissue to find a suitable needle trajectory. A patientspecific tissue model is derived from different imaging ...

Experimental study of needle-tissue interaction forces: effect of needle geometries, insertion methods and tissue characteristics.

A thorough understanding of needle-tissue interaction mechanics is necessary to optimize needle design, achieve robotically needle steering, and establish surgical simulation system. It is obvious that the interaction is influenced by numerous variable parameters, which are divided into three categories: needle geometries, insertion methods, and tissue characteristics. A series of experiments a...

Introducing a bony composite as tissue equivalent for radiotherapy phantoms

The use of a device that simulates the actual condition, as well as being equivalent to the human body in materials and tissues, and having the capability of acting like internal motions of human body is necessary to investigate and simulate the motion of a tumor in radiotherapy and to evaluate dosimetrical coverage of the dynamic target. This device which is called the dynamic phantom should s...

Comparisons of Needle Insertion in Brachytherapy Protocols Using a Soft Tissue Model