Table 1.
Patient demographics.
Fig 1.
An example of radiotherapy planning using a respiratory-gated, volumetric-modulated, arc therapy technique for hepatocellular carcinoma in segment 3 of the liver.
Fig 2.
Calculating the distance semi-automatically between the tumor margin and a marker in 3-dimensional space creating a curved line parallel to the outer margin of the tumor using planning CT workstation.
Firstly, draw a line along tumor margin. Second, create a curved line parallel to the outer margin of the tumor at marker site using workstation tool. And the distance between the tumor margin and a marker is automatically calculated as 1.6cm.
Table 2.
Technical success and complications in 101 patients.
Fig 3.
Beam hardening artifact created by the marker obscuring tumor margins.
(a) Hepatic metastasis (arrow, the longest tumor diameter: 1.4 cm) from rectal cancer in segment 4 of the liver. (b, c) Beam-hardening artifact of the marker obscured the tumor margin. The distance between the tumor and the marker was 0.4 cm.
Table 3.
Comparison of visible and poorly conspicuous lesions on gray-scale US.
Fig 4.
A 43-year-old male with hepatocellular carcinoma who underwent fiducial marker implants (arrowheads, a-b). After the procedure, a small, echogenic lesion (b) developed in the subcapsular portion of the liver, thus suggesting subcapsular hematoma (arrow).