keyword
MENU ▼
Read by QxMD icon Read
search

Body contouring

keyword
https://www.readbyqxmd.com/read/28102349/development-of-patient-specific-phantoms-for-verification-of-stereotactic-body-radiation-therapy-planning-in-patients-with-metallic-screw-fixation
#1
Dongryul Oh, Chae-Seon Hong, Sang Gyu Ju, Minkyu Kim, Bum Yong Koo, SungBack Choi, Hee Chul Park, Doo Ho Choi, Hongryull Pyo
A new technique for manufacturing a patient-specific dosimetric phantom using three-dimensional printing (PSDP_3DP) was developed, and its geometrical and dosimetric accuracy was analyzed. External body contours and structures of the spine and metallic fixation screws (MFS) were delineated from CT images of a patient with MFS who underwent stereotactic body radiation therapy for spine metastasis. Contours were converted into a STereoLithography file format using in-house program. A hollow, four-section PSDP was designed and manufactured using three types of 3DP to allow filling with a muscle-equivalent liquid and insertion of dosimeters...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28100746/end-stopping-predicts-curvature-tuning-along-the-ventral-stream
#2
Carlos R Ponce, Till S Hartmann, Margaret S Livingstone
: Neurons in primate inferotemporal cortex (IT) are clustered into patches of shared image preferences. Functional imaging has shown that these patches are activated by natural categories (e.g., faces, body parts, and places), artificial categories (numerals, words) and geometric features (curvature and real-world size). These domains develop in the same cortical locations across monkeys and humans, which raises the possibility of common innate mechanisms. Although these commonalities could be high-level template-based categories, it is alternatively possible that the domain locations are constrained by low-level properties such as end-stopping, eccentricity, and the shape of the preferred images...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28095554/-hands-free-noninvasive-body-contouring-devices-review-of-effectiveness-and-patient-satisfaction
#3
Suneel Chilukuri, Gregory Mueller
The demand for body contouring is increasing rapidly and has generated the need for a variety of non-invasive body contouring devices. This review concentrates on three popular "hands-free" body contouring devices and analyzes their mechanism of action, as well as their evidence of safety and ef cacy. It also addresses some issues of usability from both the operators' and patients' point of view. <em>J Drugs Dermatol. 2016;15(11):1402-1406.</em>.
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095547/prospective-internally-controlled-blind-reviewed-clinical-evaluation-of-cryolipolysis-combined-with-multipolar-radiofrequency-andvaripulsetechnology-for-enhanced-subject-results-in-circumferential-fat-reduction-and-skin-laxity-of-the-flanks
#4
Julius Few, Michael Gold, Neil Sadick
BACKGROUND: Increasing demand for non-invasive skin tightening and body contouring procedures has led to several technological in- novations in energy-based devices such as ultrasound, radiofrequency and cryolipolysis. An emerging trend in the eld is to evaluate whether combination therapies for skin laxity/body contouring using energy-based devices can deliver superior clinical results and patient satisfaction. As such, the objective of this prospective, internal-controlled, blind clinical study was to assess the safety and efficacy of cryolipolysis followed by multipolar radiofrequency with pulsed electromagnetic elds (PEMF) and adjustable pulsed suction for the treatment of skin laxity in the flanks...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095535/a-systematic-review-of-paradoxical-adipose-hyperplasia-pah-post-cryolipolysis
#5
Derek Ho, Jared Jagdeo
BACKGROUND: Body sculpting, or body contouring, is among the fastest growing areas in cosmetic dermatology. Cryolipolysis, or "fat freezing," was FDA-cleared (CoolSculpting System, ZELTIQ Aesthetics, Pleasanton, CA) initially in 2010 for fat removal of the anks, and subsequently received FDA-clearance for other anatomical locations. Over the past several years, there have been increasing published reports and physician discussion regarding paradoxical adipose hyperplasia (PAH) post-cryolipolysis, previously identified as a "rare" adverse effect...
January 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095532/1060-nm-diode-hyperthermic-laser-lipolysis-the-latest-in-non-invasive-body-contouring
#6
Laura Schilling, Nazanin Saedi, Robert Weiss
Non-invasive body contouring is becoming increasingly popular in the United States. Using the 1060 nm diode laser to achieve hyperthermic temperatures within the adipose tissue with subsequent lipolysis is one of the most recent advancements in this field and is the first of its kind. This wavelength was carefully chosen to effectively target the unwanted adipocytes while sparing the overlying skin and adnexae. Appreciable results are achieved after a single treatment, and these results are comparable to other non-invasive technologies...
January 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095531/future-applications-of-deoxycholic-acid-in-body-contouring
#7
Jonathan M Sykes, Amir Allak, Brian Klink
Deoxycholic acid (KybellaTM, Allergan Pharmaceuticals, Irvine, CA) is a novel injectable treatment used for the cosmetic reduction of redundant submental fat. By inducing adipose cell lysis, the soft tissue alteration induces subsequent contour change and sharpening of the cervicomental angle.The safety and efficacy have been well established in several prospective clinical trials and subsequent FDA approval for this purpose. This has provided an effective and less invasive alternative to surgical liposuction with virtually no recovery time and less overall discomfort...
January 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28063756/-synthetic-cannabinoids-a-new-addiction-matrix
#8
Amandine Scocard, Amine Benyamina, Sarah Coscas, Laurent Karila
Synthetic cannabinoids (SC) belong to the emergent market of new psychoactive substances, sold on the Internet or specialized shops. Since the 1970s, more than 160 new SC have invaded the drug market. These substances imitate the psychoactive effects of cannabis. Underestimated for too long, SC's market growth and consequences are no longer to be ignored, first of all in terms of public health. SC were first synthesized during researches on the endocannabinoid system. Though they are agonists of the cannabinoid receptors 1 and 2, as Δ9-tetrahydrocannabinol in cannabis, they can also have a really high affinity with these receptors, rising up their potency...
January 4, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28048796/mo-fg-campus-jep2-04-comparison-study-for-ct-and-mr-only-prostate-imrt-treatment-planning-a-framework-for-the-estimation-of-relative-contribution-of-body-contour-discrepancies-tissue-stratification-and-hu-red-conversion-to-the-overall-dose-difference
#9
M Maspero, P R Seevinck, G Schubert, M Hoesl, G J Meijer, M A Viergever, Jjw Lagendijk, Cat van den Berg
PURPOSE: To compare dose of prostate IMRT plans on CT vs MR-based pseudo-CT (pCT). A framework is demonstrated to isolate various confounding factors causing dose differences. This approach will be valuable for medical physicists interested in commissioning strategy of MR-only dose planning. METHODS: A retrospective study was conducted on fourteen prostate patients that underwent CT and MRI scans. MR was equipped with an in-house-developed flat table-top and coil support...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048684/su-f-t-115-uncertainty-in-the-esophagus-dose-in-retrospective-epidemiological-study-of-breast-cancer-radiotherapy-patients
#10
E Mosher, S Kim, C Lee, C Pelletier, J Jung, E Jones, C Lee
PURPOSE: Epidemiological studies of second cancer risks in breast cancer radiotherapy patients often use generic patient anatomy to reconstruct normal tissue doses when CT images of patients are not available. To evaluate the uncertainty involved in the dosimetry approach, we evaluated the esophagus dose in five sample patients by simulating breast cancer treatments. METHODS: We obtained the diagnostic CT images of five anonymized adult female patients in different Body Mass Index (BMI) categories (16- 36kg/m2) from National Institutes of Health Clinical Center...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048630/su-f-t-250-what-does-it-take-to-correctly-assess-the-high-failure-modes-of-an-advanced-radiotherapy-procedure-such-as-stereotactic-body-radiation-therapy
#11
D Han, D Vile, M Rosu, J Palta
PURPOSE: Assess the correct implementation of risk-based methodology of TG 100 to optimize quality management and patient safety procedures for Stereotactic Body Radiation Therapy. METHODS: A detailed process map of SBRT treatment procedure was generated by a team of three physicists with varying clinical experience at our institution to assess the potential high-risk failure modes. The probabilities of occurrence (O), severity (S) and detectability (D) for potential failure mode in each step of the process map were assigned by these individuals independently on the scale from1 to 10...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048527/su-f-t-544-development-of-a-clinically-feasible-workflow-of-4d-mri-based-treatment-planning-for-liver-sbrt
#12
S Han, F Yin, B Czito, M Palta, J Cai
PURPOSE: To develop a clinically feasible workflow of 4D MRI-based treatment planning for liver SBRT. METHODS: A clinical workflow based on 4D MRI for liver SBRT was designed to largely simulate the same procedure as 4D CT for lung SBRT. Key features of the workflow include: (1) contouring tumor volume at each phases (2) contouring more structures, (3) assigning CT numbers to structures for dose calculation. Uncertainties (bone delineation, MRI distortion, CT number assignment, etc...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048362/su-f-j-161-prostate-contouring-in-patients-with-bilateral-hip-prostheses-impact-of-using-artifact-reduced-ct-images-and-mri
#13
A Elzibak, A Loblaw, G Morton, D Vesprini, S Liu, H Chung, M Davidson
PURPOSE: To investigate the usefulness of metal artifact reduction in CT images of patients with bilateral hip prostheses (BHP) for contouring the prostate and determine if the inclusion of MR images provides additional benefits. METHODS: Five patients with BHP were CT scanned using our clinical protocol (140kV, 300mAs, 3mm slices, 1.5mm increment, Philips Medical Systems, OH). Images were reconstructed with the orthopaedic metal artifact reduction (O-MAR) algorithm...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048271/su-f-j-128-dosimetric-impact-of-esophagus-motion-in-spine-stereotactic-body-radiotherapy
#14
J Yang, X Wang, Z Zhao, J Yang, Y Zhang, L Court, J Li, P Brown, A Ghia
PURPOSE: Acute esophageal toxicity is a common side effect in spine stereotactic body radiotherapy (SBRT). The respiratory motion may alter esophageal position from the planning scan resulting in excessive esophageal dose. Here we assessed the dosimetric impact resulting from the esophageal motion using 4DCT. METHODS: Nine patients treated to their thoracic spines in one fraction of 24 Gy were identified for this study. The original plan on a free breathing CT was copied to each phase image of a 4DCT scan, recalculated, scaled, and accumulated to the free breathing CT using deformable image registration...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048202/we-h-brc-02-failure-mode-and-effect-analysis-of-liver-stereotactic-body-radiotherapy
#15
I Rusu, T Thomas, J Roeske, J Price, C Perino, I Mescioglu, M Surucu
PURPOSE: To identify areas of improvement in our liver stereotactic body radiation therapy (SBRT) program, using failure mode and effect analysis (FMEA). METHODS: A multidisciplinary group consisting of one physician, three physicists, one dosimetrist and two therapists was formed. A process map covering 10 major stages of the liver SBRT program from the initial diagnosis to post treatment follow-up was generated. A total of 102 failure modes, together with their causes and effects, were identified...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048176/su-g-bra-10-marker-free-lung-tumor-motion-tracking-by-an-active-contour-model-on-cone-beam-ct-projections-for-stereotactic-body-radiation-therapy-of-lung-cancer
#16
M Chao, J Wei, Y Yuan, Y Lo
PURPOSE: To develop a novel strategy to extract the lung tumor motion from cone beam CT (CBCT) projections by an active contour model with interpolated respiration learned from diaphragm motion. METHODS: Tumor tracking on CBCT projections was accomplished with the templates derived from planning CT (pCT). There are three major steps in the proposed algorithm: 1) The pCT was modified to form two CT sets: a tumor removed pCT and a tumor only pCT, the respective digitally reconstructed radiographs DRRtr and DRRto following the same geometry of the CBCT projections were generated correspondingly...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048133/su-f-j-113-multi-atlas-based-automatic-organ-segmentation-for-lung-radiotherapy-planning
#17
J Kim, J Han, S Ailawadi, J Baker, A Hsia, Z Xu, S Ryu
PURPOSE: Normal organ segmentation is one time-consuming and labor-intensive step for lung radiotherapy treatment planning. The aim of this study is to evaluate the performance of a multi-atlas based segmentation approach for automatic organs at risk (OAR) delineation. METHODS: Fifteen Lung stereotactic body radiation therapy patients were randomly selected. Planning CT images and OAR contours of the heart - HT, aorta - AO, vena cava - VC, pulmonary trunk - PT, and esophagus - ES were exported and used as reference and atlas sets...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047761/su-g-iep2-02-a-proposed-solution-to-accurate-delineation-of-external-body-contour-within-ct-extended-field-of-view-efov-and-the-evaluation-of-dosimetric-impact-from-image-distortion-in-efov
#18
V Huang, J Kamarn, R D'Arcy, K Kohli
PURPOSE: When a patient's anatomy spans beyond the scan field of view (sFOV) in a CT scanner, extrapolation techniques are applied to reconstruct data in the extended field of view (eFOV). However, it's challenging to delineate the external body contour accurately due to image distortions within eFOV. Our proposed solution is to apply TargetTape, a disposable radio-opaque adhesive strip, to patients. Our study investigates the accuracy of geometric reconstruction and the dosimetric impact when using TargetTape in eFOV...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047707/su-g-201-14-is-maximum-skin-dose-a-reliable-metric-for-accelerated-partial-breast-irradiation-with-brachytherapy
#19
S Park, O Ragab, S Patel, Y Kim, J Demanes, M Kamrava
PURPOSE: To evaluate the reliability of the maximum point dose (Dmax) to the skin surface as a dosimetric constraint, we investigated the correlation between Dmax at the skin surface and dose metrics at various definitions of skin thickness. METHODS: 42 patients treated with APBI using a Strut Adjusted Volume Implant (SAVI) applicator between 2010 and 2014 were retrospectively reviewed. Target (PTV_EVAL) and organs at risk (OARs: skin, lung, and ribs) were delineated on a CT following NSABP B-39 guidelines...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047657/su-f-j-140-using-handheld-stereo-depth-cameras-to-extend-medical-imaging-for-radiation-therapy-planning
#20
C Jenkins, L Xing, S Yu
PURPOSE: A correct body contour is essential for the accuracy of dose calculation in radiation therapy. While modern medical imaging technologies provide highly accurate representations of body contours, there are times when a patient's anatomy cannot be fully captured or there is a lack of easy access to CT/MRI scanning. Recently, handheld cameras have emerged that are capable of performing three dimensional (3D) scans of patient surface anatomy. By combining 3D camera and medical imaging data, the patient's surface contour can be fully captured...
June 2016: Medical Physics
keyword
keyword
21233
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"