• Progress in Medical Physics
• /
• v.27 no.4
• /
• pp.258-266
• /
• 2016

We have treated various disease sites using wobbling and scanning proton therapy techniques since December 2015 at the Samsung Medical Center. In this study, we analyze the treatment time for each disease site in 65 wobbling and 50 scanning patient treatments. Treatment times are longest for liver and lung patients using the respiratory gating technique in the wobbling treatment and for cranio-spinal irradiation in pediatric patients with anesthesia in the scanning treatment. Moreover, we analyze the number of incidents causing treatment delays and the corresponding treatment delay time. The X-ray panel was the main reason for delays in the wobbling treatment; this decreased continually from January to June 2016, related closely to the proficiency of the human operators involved. The main reason for delays in the scanning treatment was interlocks during scanning pattern delivery; this was resolved by proton machine engineers. Through this work, we hope to provide other institutes with useful insight for initial operation of their proton therapy machines.

• Journal of Chest Surgery
• /
• v.50 no.6
• /
• pp.479-479
• /
• 2017

• 대한핵의학회:학술대회논문집
• /
• 2000.05a
• /
• pp.79.1-79.1
• /
• 2000

• 대한예방의학회:학술대회논문집
• /
• 1999.10a
• /
• pp.326-327
• /
• 1999

• 대한예방의학회:학술대회논문집
• /
• 1999.10a
• /
• pp.337-338
• /
• 1999

• 대한핵의학회:학술대회논문집
• /
• 1989.06a
• /
• pp.141.1-141.1
• /
• 1989

• Journal of Korean Neurosurgical Society
• /
• v.30 no.4
• /
• pp.514-517
• /
• 2001

Although malignant transformation of meningiomas has been reported, it is extremely rare in meningiomas of ventricular system. Less than 2% of all meningiomas show malignant transformation from benign meningioma. We report a case of meningioma with early recurrence and malignant transformation and investigated possible underlying factors using immunohistochemistry for PCNA and p53 protein expression.

• Proceedings of the PSK Conference
• /
• 2001.04a
• /
• pp.123.2-124
• /
• 2001

• 대한핵의학회:학술대회논문집
• /
• 2006.05a
• /
• pp.51-52
• /
• 2006

• Annals of Clinical Neurophysiology
• /
• v.19 no.1
• /
• pp.50-53
• /
• 2017

An infection is less likely to elicit chronic inflammatory demyelinating polyneuropathy (CIDP) than Guillain-$Barr{\acute{e}}$ syndrome. We here report a case of acute-onset CIDP following hepatitis A virus infection and briefly comment on the potential mechanisms regarding the induction and chronicity of autoimmunity after a viral infection.