Gated carbon-ion scanning treatment for pancreatic tumour with field specific target volume and organs at risk.

Objective: To assess the feasibility of treatment planning for pancreatic tumours subject to respiratory motion using field-specific target volumes (FTV) and field-specific organs at risk (FOAR) using four-dimensional computed tomography (4DCT).

Methods: Fourteen pancreatic cancer patients underwent 4DCT. Radiation oncologists contoured the gross tumour volume (GTV), clinical target volume (CTV), spinal cord, duodenum, kidneys, and stomach.

Comparison of carbon-ion passive and scanning irradiation for pancreatic cancer.

Purpose: To compare carbon-ion beam dose distribution between passive and scanning radiation therapies for locally advanced pancreatic cancer.

Materials And Methods: Thirteen pancreatic cancer patients were included in this study. Four types of treatment planning with respiratory gating were calculated for each patient: a four-field box with passive irradiation (Plan 1), scanning irradiation (Plan 2), a three-field (150°, 180° and 210°) protocol with passive irradiation (Plan 3), and scanning irradiation (Plan 4).

[Heavy ion radiotherapy for recurrence of an esophageal primary malignant melanoma].

A 55-year-old man, with a prior diagnosis of primary malignant melanoma of the esophagus, had undergone esophagectomy 6 years prior. During the postoperative follow-up, a flat tumor with black pigmentation, about 2 cm in diameter, was detected during upper gastrointestinal endoscopy. A pathological examination of the biopsy specimen showed a recurrent malignant melanoma.

Definitive radiotherapy for early-stage hypopharyngeal squamous cell carcinoma.

The present study analyzed the outcomes of patients with early-stage hypopharyngeal squamous cell carcinoma (HPSCC) treated with radical radiotherapy (RT) or concurrent chemoradiotherapy (CCRT). We retrospectively reviewed the clinical records of 33 patients with early-stage HPSCC who underwent RT or CCRT between January 1999 and December 2011. Of the 33 patients who were treated, 12 had Stage I and 21 had Stage II disease.

Phase I study of weekly docetaxel and cisplatin arterial infusion for recurrent head and neck cancer.

Background: We planned a phase I study of weekly arterial infusion of docetaxel and cisplatin via a superficial temporal artery for recurrent head and neck cancer to determine the optimal dose.

Methods: The dose of cisplatin was fixed and the dose of docetaxel was escalated from 8 mg/m(2) , with an increase of 2 mg/m(2) per step, to identify the maximum tolerated dose (MTD). In total, 4 courses of weekly chemotherapy were administered.

A new method using MRI to delineate areas of head and neck cancer targeted by intra-arterial infusion via a superficial temporal artery.

To determine whether anticancer drugs delivered via arterial infusion can permeate entire tumors using a new MRI flow check method. We infused 20 ml of contrast medium (2 ml of Gd-GDPA plus 18 ml of normal saline) over a period of 10 min using a continuous injection pump, then immediately performed MRI using a 1.5 T unit.