CT-Guided Fiducial Marker Implantation with Ultra-fine 25-Gauge Needle Prior to Proton Therapy for Liver Malignancies Abstract (extract), Purpose: Proton therapy is highly effective for liver malignancies, and to increase its accuracy, placement of fiducial markers in the liver is preferred. We retrospectively evaluated the safety and feasibility of CT-guided fiducial marker implantation using ultra-fine 25-gauge needles before proton therapy for liver malignancies. Materials […]
Tag Archives: Liver
English, translation from Polish articlePolish original
Summary: Gold Anchors were implanted through 22-gauge needle in two liver cancer patients at the Gifu Municipal Hospital in Japan. This caused little pain during placement under local anesthesia with xylocaine. No complication occurred in either patient. The iron-containing fiducial marker composed of 99.5% gold and 0.5% iron made visualization in MRI easy, which helped […]
Summary: Gold Anchors were implanted percutaneously under local anesthesia close to liver tumors in four patients at the Meiwa Hospital in Japan. All implantations were successfully performed with no complications. The markers were more visible than the uptake of lipiodol emulsion. The markers were also well detected in CB-CT images in all fractions. Article in […]
Summary: In Italy, ultrasound guided implantation in liver was performed in 50 patients of 68 gold grain markers 1×4 mm through 17-gauge needles, 78 Gold Anchors 0.4×10 mm through 22-gauge needles, and 17 Gold Anchors 0.28×10 mm through 25-gauge needles. The use of 17-gauge needles resulted in five patients developing abdominal pain and the migration […]
Objectives: To evaluate intrafractional fiducial marker position variations during stereotactic body radiotherapy (SBRT) in patients treated for liver metastases in visually guided, voluntary deep inspiration breath-hold (DIBH). Comment on methods: 10 patients with implanted fiducial markers were studied. Three DIBH CTs were acquired for treatment planning. Pre- and post-treatment CBCTs were acquired for each of […]
“Hepatocellular carcinoma effective stereotactic body radiotherapy using Gold Anchor and the Synchrony system: Two case reports and review of literature” Background: Radiotherapy for hepatocellular carcinoma (HCC) is considered to have limited efficacy because of treatment intensity considering that the irradiated area includes the liver, which is highly radiosensitive. In this report, we present two cases […]
“Real-time tumor-tracking radiotherapy with SyncTraX for primary liver tumors requiring isocenter shift” Abstract (extract): The SyncTraX series enables real-time tumor-tracking radiotherapy through the real-time recognition of a fiducial marker using fluoroscopic images. In this system, the isocenter should be located within approximately 5–7.5 cm from the marker, depending on the version, owing to the limited […]
“Real-time gated proton therapy with a reduced source to imager distance: Commissioning and quality assurance” Introduction (extract): Real-time gated proton therapy (RGPT) is a motion management technique unique to the Hitachi particle therapy system. It uses pulsed fluoroscopy to track an implanted fiducial marker. The marker positional tolerance can be defined such that the proton […]