We propose a novel approach for potential online treatment verification using cine EPID (electronic portal imaging device) images for hypofractionated lung radiotherapy based on a machine learning algorithm. Hypofractionated radiotherapy requires high precision. It is essential to effectively monitor the target to ensure that the tumor is within the beam aperture. We modeled the treatment verif...

Telah dilakukan penelitian mengenai verifikasi pergesesaran geometri pada pesawat Linear Accelerator (Linac) tipe Clinax CX menggunakan Electronic Portal Imaging Device (EPID). Verifikasi 10 data rekam medis pasien kanker nasofaring di Instalasi Radioterapi Rumah Sakit Universitas Andalas. Proses diawali dengan perencanaan Treatment Planning System (TPS) Software Eclipse dilanjutkan penyinaran ...

This work investigated the differences between multileaf collimator (MLC) positioning accuracy determined using either log files or electronic portal imaging devices (EPID) and then assessed the possibility of reducing patient specific quality control (QC) via phantom-less methodologies. In-house software was developed, and validated, to track MLC positional accuracy with the rotational and sta...

BACKGROUND This study retrospectively compared the continuous epidural infusion of morphine with a single epidural injection of extended-release morphine for postoperative pain control after arthroplasty. METHODS Medical records were reviewed for subjects who had total knee or hip arthroplasty (THA) under spinal anesthesia and received either a continuous epidural infusion of morphine (Group ...

Devido aos avanços nos tratamentos radioterápicos, as ferramentas usadas para descrever e representar o acelerador linear vem sendo aprimoradas, existindo uma preocupação maior cálculo de dose em situações campos pequenos. O algoritmo AcurosXB apresenta resultados interessantes tais problemas, mas preciso é essencial a escolha adequada do parâmetro da modelagem feixe chamado tamanho fonte (Spot...

This study evaluated the agreement of fiducial marker localization between two modalities--an electronic portal imaging device (EPID) and cone-beam computed tomography (CBCT)--using a low-dose, half-rotation scanning protocol. Twenty-five prostate cancer patients with implanted fiducial markers were enrolled. Before each daily treatment, EPID and half-rotation CBCT images were acquired. Transla...

Correlated responses in whole-body composition were determined in 12-wk-old male mice from replicate lines selected for 12 generations for high (HF) or low (LF) epididymal fat pad weight as a percentage of body weight (EPID) and high (HL) or low (LL) hind carcass weight as a percentage of body weight. The HF and LF lines diverged (P less than .01) in body fat percentage (FAT) and subcutaneous d...