AIMC Topic: Patient Positioning

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Stroke Volume Recruitability during the Third Trimester of Pregnancy.

American journal of perinatology Dec 26, 2017
OBJECTIVE: It is unknown whether the heart operates in the ascending or flat portion of the Starling curve during normal pregnancy. Pregnant women do not respond to the passive leg-raising maneuver secondary to mechanical obstruction of the inferior ...
Monitoring, Physiologic Young Adult Posture Adult Blood Pressure Pregnancy Trimester, Third Stroke Volume Heart Rate Patient Positioning Hemodynamics Humans Leg Prospective Studies Vascular Resistance Pregnancy Female
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Please Don't Move-Evaluating Motion Artifact From Peripheral Quantitative Computed Tomography Scans Using Textural Features.

Journal of clinical densitometry : the official journal of the International Society for Clinical Densitometry Aug 8, 2017
Most imaging methods, including peripheral quantitative computed tomography (pQCT), are susceptible to motion artifacts particularly in fidgety pediatric populations. Methods currently used to address motion artifact include manual screening (visual ...
Humans Machine Learning Tomography, X-Ray Computed Reproducibility of Results Decision Trees Radius Radiographic Image Interpretation, Computer-Assisted Patient Positioning Artifacts Movement Tibia Epiphyses Diaphyses
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Assessment of pose repeatability and specimen repositioning of a robotic joint testing platform.

Medical engineering & physics Jun 24, 2017
This paper describes the quantitative assessment of a robotic testing platform, consisting of an industrial robot and a universal force-moment sensor, via the design of fixtures used to hold the tibia and femur of cadaveric knees. This platform was u...
Equipment Failure Analysis Equipment Design Range of Motion, Articular Joints Patient Positioning Humans Reproducibility of Results Sensitivity and Specificity Posture Robotics
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Robotic inferior vena cava surgery.

Journal of vascular surgery. Venous and lymphatic disorders Nov 9, 2016
OBJECTIVE: Inferior vena cava (IVC) surgery is uncommon and has traditionally been performed through open surgical approaches. Renal cell carcinoma with IVC extension generally requires vena cavotomy and reconstruction. Open removal of malpositioned ...
Young Adult Ligation Adult Vascular Neoplasms Male Middle Aged Kidney Neoplasms Treatment Outcome Patient Safety Blood Loss, Surgical Carcinoma, Renal Cell Retrospective Studies Lymph Node Excision Humans Nephrectomy Female Operative Time Patient Positioning Aged Robotic Surgical Procedures Vena Cava, Inferior
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A machine learning approach to the accurate prediction of multi-leaf collimator positional errors.

Physics in medicine and biology Mar 7, 2016
Discrepancies between planned and delivered movements of multi-leaf collimators (MLCs) are an important source of errors in dose distributions during radiotherapy. In this work we used machine learning techniques to train models to predict these disc...
Radiotherapy Planning, Computer-Assisted Radiation Dosage Radiotherapy Dosage Patient Positioning Humans Machine Learning
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eNAL++: a new and effective off-line correction protocol for rotational setup errors when using a robotic couch.

Journal of applied clinical medical physics Nov 8, 2015
Cone-beam CTs (CBCTs) installed on a linear accelerator can be used to provide fast and accurate automatic six degrees of freedom (6DoF) vector displacement information of the patient position just prior to radiotherapy. These displacement correction...
Humans Software Algorithms Cone-Beam Computed Tomography Robotics Meningioma Meningeal Neoplasms Particle Accelerators Rotation Radiotherapy Planning, Computer-Assisted Patient Positioning Radiotherapy, Image-Guided
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Adaptive optimization by 6 DOF robotic couch in prostate volumetric IMRT treatment: rototranslational shift and dosimetric consequences.

Journal of applied clinical medical physics Sep 8, 2015
The purpose of this study was to investigate the magnitude and dosimetric relevance of translational and rotational shifts on IGRT prostate volumetric-modulated arc therapy (VMAT) using Protura six degrees of freedom (DOF) Robotic Patient Positioning...
Prostatic Neoplasms Rotation Radiotherapy Planning, Computer-Assisted Radiotherapy Dosage Radiotherapy, Intensity-Modulated Humans Male Robotics Patient Positioning Movement Beds Radiotherapy Setup Errors
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Laparoscopic robot-assisted resection of tumors located in posterosuperior liver segments.

Updates in surgery Jun 16, 2015
Laparoscopic resection of liver tumors located in the posterosuperior segments is a challenging operation that could be facilitated by robotic assistance. Laparoscopic resection of 12 tumors located in posterosuperior segments (IVa: 1; VII: 5; VIII: ...
Patient Positioning Operative Time Robotics Neoplasm Staging Laparoscopy Carcinoma, Hepatocellular Italy Lymph Nodes Survival Analysis Treatment Outcome Immunohistochemistry Blood Loss, Surgical Hepatectomy Neoplasm Invasiveness Biopsy, Needle Postoperative Complications Humans Length of Stay Prognosis Retrospective Studies Cohort Studies Female Aged Liver Neoplasms Male Middle Aged
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Transient but significant visual field defects after robot-assisted laparoscopic radical prostatectomy in deep tRendelenburg position.

PloS one Apr 23, 2015
BACKGROUND: Robot-assisted laparoscopic radical prostatectomy (RALP) is a minimally invasive surgical procedure for prostate cancer. During RALP, the patient must be in a steep Trendelenburg (head-down) position, which leads to a significant increase...
Robotics Visual Fields Prostatectomy Patient Positioning Humans Prospective Studies
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Development of system using beam's eye view images to measure respiratory motion tracking errors in image-guided robotic radiosurgery system.

Journal of applied clinical medical physics Jan 8, 2015
The accuracy of the CyberKnife Synchrony Respiratory Tracking System (SRTS) is considered to be patient-dependent because the SRTS relies on an individual correlation between the internal tumor position (ITP) and the external marker position (EMP), a...
Radiotherapy Setup Errors Respiratory-Gated Imaging Techniques Software Humans Aged, 80 and over Radiosurgery Radiotherapy Planning, Computer-Assisted Patient Positioning Male Radiotherapy Dosage Algorithms Phantoms, Imaging Middle Aged Radiotherapy, Intensity-Modulated Movement Female Lung Neoplasms Thorax Radiotherapy, Image-Guided Aged Robotics
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