ETHOS Treatment cases

Patient: Male, 55 years old
Diagnosis: Nasopharyngeal Malignant Tumor {Undifferentiated Non-keratinizing Carcinoma)
Symptoms: Neck discomfort, primarily pain
P「escribed Dose:
PGTVnx: 70.29 Gy in 33 fractions (2.13 Gy per fraction) PGTVnd: 67.98 Gy in 33 fractions (2.06 Gy per fraction)
PTVl: 62.04 Gy in 33 fractions (1.88 Gy per fraction) PTV2: 54.12 Gy in 33 fractions {1.64 Gy per fraction)
Outcome:Eight months after treatment, follow-up MR imaging indicated a reduction in the size of the nasopharyngeal mass and positive lymph nodes compared to previous scans. Improvement in nasopharyngeal mucosal thickening was also observed.

Patient: Male, 67 years old
Diagnosis: Bladder Cancer
Treatment Challenge: Tumor position varies with bladder filling, poor reproducibility.
Advantages of ETHOS Online Adaptive Treatment:
Utilizes iCBCT imaging before each treatment to capture the real-time position of the patient’s bladder and tumor. Allows for recontouring of the target area and redesigning of the treatment plan before each session, ensuring greater precision.
Illustrations include pre-treatment MR, target delineation during Ethos adaptive radiotherapy, and post-treatment MR.