Comparison before CyberKnife treatment with that at 2 months after treatment.

<p>A 40 years old male patient with adenocarcinoma involving the right lung with metastases in the left and right adrenal after 4 cycles of chemotherapy. (A, B) Abdominal transverse enhanced CT scanning shows bilateral adrenal metastasis. (C, D) Abdominal transverse enhanced CT at 2 months after CK treatment shows bilateral metastases were significantly reduces with the previous. The patient had varying degrees of lower back and abdomen swelling pain before treatment, the symptom were relieved at the time when the patient was followed up.</p

Treatment results and dosimetry plots of one case.

<p>A 80 years old male patient with squamous cell carcinoma involving the right lung with isolation metastasis in the left adrenal, with tumor size of 3.6×1.7 cm. (A) The DVH of CK treatment shows tumor in the high-dose region, meanwhile surrounding normal tissues in the low-dose region. (B) The OAR including the left kidney, stomach and very small part of the intestinal tract. (C) Therapy consisted of high-dosage, hypofractionated radiation (15 Gy/fraction, split into 3 times) delivered once per day, resulting in a total dose of 450Gy. The Max and Min dosage(Gy) of GTV was 58.4 and 35.2 respectively. Tumor volume coverage was 92.5%.The Max dosage(Gy) of left kidney and stomach was 22.1 and 33.7 respectively.</p