keyword
MENU ▼
Read by QxMD icon Read
search

Cervical volume

keyword
https://www.readbyqxmd.com/read/28104743/active-brown-fat-during-18fdg-pet-ct-imaging-defines-a-patient-group-with-characteristic-traits-and-an-increased-probability-of-brown-fat-redetection
#1
Carlos Gerngroß, Johanna Schretter, Martin Klingenspor, Markus Schwaiger, Tobias Fromme
Brown adipose tissue (BAT) provides a means of non-shivering thermogenesis. In humans, active BAT can be visualized by (18)F-fluoro-desoxyglucose (FDG) uptake as detected by positron emission tomography (PET) combined with computer tomography (CT). The retrospective analysis of clinical scans is a valuable source to identify anthropometric parameters that influence BAT mass and activity and thus the potential efficacy of envisioned drugs targeting this tissue to treat metabolic disease. We analyzed 2854 FDG-PET/CT scans from 1644 patients and identified 98 scans from 81 patients with active BAT...
January 19, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28100242/intraoperative-radiotherapy-in-gynaecological-and-genito-urinary-malignancies-focus-on-endometrial-cervical-renal-bladder-and-prostate-cancers
#2
REVIEW
Marco Krengli, Carla Pisani, Letizia Deantonio, Daniela Surico, Alessandro Volpe, Nicola Surico, Carlo Terrone
Intraoperative radiotherapy (IORT) refers to the delivery of a single radiation dose to a limited volume of tissue during a surgical procedure. A literature review was performed to analyze the role of IORT in gynaecological and genito-urinary cancer including endometrial, cervical, renal, bladder and prostate cancers.Literature search was performed by Pubmed and Scopus, using the words "intraoperative radiotherapy/IORT", "gynaecological cancer", "uterine/endometrial cancer", "cervical/cervix cancer", "renal/kidney cancer", "bladder cancer" and "prostate cancer"...
January 19, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28079775/association-of-hospital-volume-with-racial-and-ethnic-disparities-in-locally-advanced-cervical-cancer-treatment
#3
Shitanshu Uppal, Christina Chapman, Ryan J Spencer, Shruti Jolly, Kate Maturen, J Alejandro Rauh-Hain, Marcela G delCarmen, Laurel W Rice
OBJECTIVE: To evaluate racial-ethnic disparities in guideline-based care in locally advanced cervical cancer and their relationship to hospital case volume. METHODS: Using the National Cancer Database, we performed a retrospective cohort study of women diagnosed between 2004 and 2012 with locally advanced squamous or adenocarcinoma of the cervix undergoing definitive primary radiation therapy. The primary outcome was the race-ethnicity-based rates of adherence to the National Comprehensive Cancer Network guideline-based care...
January 9, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28072618/18f-fdg-pet-ct-versus-contrast-enhanced-ct-for-staging-and-prognostic-prediction-in-patients-with-salivary-gland-carcinomas
#4
Marn Joon Park, Jungsu S Oh, Jong-Lyel Roh, Jae Seung Kim, Jeong Hyun Lee, Soon Yuhl Nam, Sang Yoon Kim
PURPOSE: Salivary gland carcinoma (SGC) is rare tumor with various histological type and metastatic potential. Pretreatment detection of metastases can contribute to planning the appropriate treatment of SGC. Therefore, the present study evaluated the utility of F-FDG PET/CT versus contrast-enhanced CT for detection of metastases and prediction of outcomes in SGC patients. METHODS: Sixty-seven consecutive SGC patients who were prospectively evaluated by F-FDG PET/CT and contrast-enhanced CT and subsequently underwent surgery with or without postoperative radiotherapy/chemoradiotherapy were included...
January 9, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28068824/three-dimensional-power-doppler-ultrasound-in-the-early-assessment-of-response-to-concurrent-chemo-radiotherapy-for-advanced-cervical-cancer
#5
Yan Xu, Lijing Zhu, Tong Ru, Huanhuan Wang, Jian He, Zhengyang Zhou, Xiaofeng Yang
Background Three-dimensional power Doppler ultrasound (3D-PDU) imaging has been widely applied to the differentiation of benign and malignant cervical lesions; however, its potential value for predicting response to chemo-radiotherapy has not been fully explored. Purpose To investigate the feasibility of 3D-PDU imaging in predicting treatment response in patients receiving concurrent chemo-radiotherapy (CCRT) for advanced cervical cancer. Material and Methods Fifty-two patients with advanced cervical cancer who received CCRT underwent 3D-PDU examinations at four timepoints: pre-therapy (baseline), 1 week and 2 weeks during, as well as immediately post CCRT...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28057913/humoral-hypercalcemia-in-uterine-cancers-a-case-report-and-literature-review
#6
Vijeyaluxmy Motilal Nehru, Gwenalyn Garcia, Juan Ding, Fanyi Kong, Qun Dai
BACKGROUND Paraneoplastic hypercalcemia is a well-described complication associated with a variety of malignancies. However, its incidence in gynecological malignancies is low. CASE REPORT A 53-year-old woman presented with progressive abdominal distention and irregular vaginal bleeding of several weeks' duration. A contrast CT abdomen and pelvis was significant for a mass in the lower uterine/cervical region, multiple peritoneal and omental masses, enlarged pelvic and paraaortic lymph nodes, and large-volume ascites...
January 6, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28055973/outcome-and-long-term-efficacy-of-four-facio-cervical-fields-conformal-radiotherapy-for-nasopharyngeal-carcinoma
#7
Wang Fangzheng, Jiang Chuner, Wang Lei, Chen Weijun, Xu Min, Sun Quanquan, Liu Tongxin, Rihito Aizawa, Masoto Sakamoto, Fu Zhenfu
PURPOSE: To evaluate the outcomes of 255 patients with nasopharyngeal carcinoma (NPC) treated with four facio-cervical fields conformal radiotherapy (4F-CRT). RESULTS: In one patient's 3 different RT treatment modalities, the 4F-CRT techniques resulted in sharper of the dose-volume histograms (DVHs) for primary gross tumor volume (PGTVnx) and planning target volume (PTVnx), similar to the intensity modulated radiation therapy (IMRT). The median follow-up duration was 43 months...
December 31, 2016: Oncotarget
https://www.readbyqxmd.com/read/28055026/anterior-uterocervical-angle-measurement-improves-prediction-of-cerclage-failure
#8
J C Knight, E Tenbrink, J Sheng, A S Patil
OBJECTIVE: To compare the anterior uterocervical angle and cervical length as predictors of spontaneous preterm delivery in patients with transvaginal cerclage. STUDY DESIGN: We retrospectively evaluated a cohort of 142 pregnant women with transvaginal cerclage placed over a 5-year period (2010 to 2015) were evaluated. Cervical morphology characteristics were measured from endovaginal imaging, including cervical length, cerclage height, funnel volume and anterior uterocervical angle prior to cerclage placement (UCA 1), shortly after cerclage placement (UCA 2) and the last image prior to delivery (UCA 3)...
January 5, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28052737/changes-in-tumor-volumes-and-spatial-locations-relative-to-normal-tissues-during-cervical-cancer-radiotherapy-assessed-by-cone-beam-computed-tomography
#9
Wenjuan Chen, Penggang Bai, Jianji Pan, Yuanji Xu, Kaiqiang Chen
PURPOSE: To assess changes in the volumes and spatial locations of tumors and surrounding organs by cone beam computed tomography during treatment for cervical cancer. MATERIALS AND METHODS: Sixteen patients with cervical cancer had intensity-modulated radiotherapy and off-line cone beam computed tomography during chemotherapy and/or radiation therapy. The gross tumor volume (GTV-T) and clinical target volumes (CTVs) were contoured on the planning computed tomography and weekly cone beam computed tomography image, and changes in volumes and spatial locations were evaluated using the volume difference method and Dice similarity coefficients...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28048882/su-f-p-25-dosimetric-changes-of-brainstem-caused-by-weight-loss-during-intensity-modulated-radiation-therapy-for-nasopharyngeal-carcinoma
#10
W Hu, C Yu, Y Cai, X Zhou, W Wang, H Yang
PURPOSE: To explore dosimetric effects of brainstem (BS) caused by weight loss during the course of intensity-modulated radiation therapy (IMRT) for nasopharyngeal carcinoma (NPC). METHODS: Seventy-seven patients who were diagnosed with NPC by pathology biopsy have been enrolled. Every patients should receive weight measurement weekly and three times of computed tomography (CT) scans and replanning, at the 15th and 25th fraction during the treatment, respectively...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048822/su-f-j-163-in-vivo-quantification-of-sequence-parameter-effect-on-geometric-distortion-caused-by-implanted-titanium-brachytherapy-applicator
#11
T Sullivan, A Diak, M Surucu, J Yacoub, M Harkenrider, S Shea
PURPOSE: The use of MR to plan and evaluate brachytherapy treatment for cervical cancer is increasing given the availability of MR conditional or safe applicators and MRI's proven superiority to CT for characterizing soft tissue lesions. The titanium applicators, however, cause geometric distortions or imaging artifacts, which reduce the utility of MRI for dosimetry. We sought to quantify the observed volume of the same applicator on a previously optimized T2 sequence in comparison to the conventional T2 sequence and CT obtained for brachytherapy planning...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048768/su-f-i-03-correction-of-intra-fractional-set-up-errors-and-target-coverage-based-on-cone-beam-computed-tomography-for-cervical-cancer-patients
#12
J Y Zhang, D L Hong
PURPOSE: The purpose of this study is to investigate the patient set-up error and interfraction target coverage in cervical cancer using image-guided adaptive radiotherapy (IGART) with cone-beam computed tomography (CBCT). METHODS: Twenty cervical cancer patients undergoing intensity modulated radiotherapy (IMRT) were randomly selected. All patients were matched to the isocenter using laser with the skin markers. Three dimensional CBCT projections were acquired by the Varian Truebeam treatment system...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048576/we-h-207a-04-impact-of-lesion-location-on-the-repeatability-of-18f-naf-pet-ct
#13
C Lin, T Perk, S Harmon, S Perlman, G Liu, R Jeraj
PURPOSE: Quantifying the repeatability of imaging biomarkers is critical for assessing therapeutic response. While (18) F-NaF PET/CT has shown to be a repeatable imaging method, research has not shown which factors may influence its repeatability. The purpose of this study was to evaluate whether the location of the lesion impacts the repeatability of quantitative (18) F-NaF PET-derived SUV metrics. METHODS: Metastatic castrate-resistant prostate cancer patients with multiple bone lesions received whole-body test-retest NaF PET/CT scans...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048200/su-f-t-62-three-dimensional-dosimetric-gamma-analysis-for-impacts-of-tissue-inhomogeneity-using-monte-carlo-simulation-in-intracavitary-brachytheray-for-cervix-carcinoma
#14
Tran Thi Thao Nguyen, Hidetaka Arimura, Yoshifumi Oku, Takahiro Nakamoto, Yusuke Shibayama, Takashi Yoshiura
PURPOSE: The aim of this study was to investigate the impacts of tissue inhomogeneity on dose distributions using a three-dimensional (3D) gamma analysis in cervical intracavitary brachytherapy using Monte Carlo (MC) simulations. METHODS: MC simulations for comparison of dose calculations were performed in a water phantom and a series of CT images of a cervical cancer patient (stage: Ib; age: 27) by employing a MC code, Particle and Heavy Ion Transport Code System (PHIT) version 2...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048067/su-f-t-36-dosimetric-comparison-of-point-based-vs-target-based-prescription-for-intracavitary-brachytherapy-in-cancer-of-the-cervix
#15
M Ashenafi, D McDonald, J Peng, C Mart, N Koch, L Cooper, K Vanek
PURPOSE: Improved patient imaging used for planning the treatment of cervical cancer with Tandem and Ovoid (T&O) Intracavitary high-dose-rate brachytherapy (HDR) now allows for 3D delineation of target volumes and organs-at-risk. However, historical data relies on the conventional point A-based planning technique. A comparative dosimetric study was performed by generating both target-based (TBP) and point-based (PBP) plans for ten clinical patients. METHODS: Treatment plans created using Elekta Oncentra v...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047873/su-f-t-397-evaluating-the-impact-of-bladder-filling-status-for-the-organs-at-risk-dose-distribution-in-cervical-cancer-patients-with-intensity-modulated-radiotherapy
#16
J Y Zhang, D L Hong
PURPOSE: To investigate the impact of bladder filling status of the organs at risk (OARs) on dose distribution during intensity modulated radiotherapy (IMRT) for cervical cancer patients. METHODS: Twelve cervical cancer patients treated with IMRT were selected for this study. The prescription dose was 45Gy/25 fractions with the 6 MV photon beam. All patients performed two CT scans, one with an empty bladder, the other one with bladder filled. For the registration of two CT scans, the fusion was automatically carried out upon the bony anatomy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047842/su-f-t-420-dosimetry-comparison-of-advanced-external-beam-radiation-treatment-modalities-to-brachytherapy-treatments-in-patients-with-cervical-cancer
#17
U Mwidu, S Devic, M Shehadeh, M AlKafi, R Mahmood, B Moftah
PURPOSE: A retrospective comparison of dose distributions achievable by High dose rate brachytherapy (HDRBT), Helical TomoTherapy (TOMO), CyberKnife (CK) and RapidArc (RA) in locally advanced inoperable cervical cancer patients is presented. METHODS: Five patients with advanced stage cervical carcinoma were selected for this study after a full course of external beam radiotherapy (EBRT), chemotherapy and HDR Brachytherapy. To highlight any significant similarities/differences in dose distributions, high-risk clinical target volume (HRCTV) coverage, organs at risk (OAR) sparing, and machine specific delivery limitations, we used D90 (dose received by 90% of the volume) as the parameter for HRCTV coverage as recommended by the GEC-ESTRO Working Group...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047459/su-f-j-217-accurate-dose-volume-parameters-calculation-for-revealing-rectum-dose-toxicity-effect-using-deformable-registration-in-cervical-cancer-brachytherapy-a-pilot-study
#18
X Zhen, H Chen, Y Liao, L Zhou, B Hrycushko, K Albuquerque, X Gu
PURPOSE: To study the feasibility of employing deformable registration methods for accurate rectum dose volume parameters calculation and their potentials in revealing rectum dose-toxicity between complication and non-complication cervical cancer patients with brachytherapy treatment. METHOD AND MATERIALS: Data from 60 patients treated with BT including planning images, treatment plans, and follow-up clinical exam were retrospectively collected. Among them, 12 patients complained about hematochezia were further examined with colonoscopy and scored as Grade 1-3 complication (CP)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047409/su-f-t-37-dosimetric-evaluation-of-planned-versus-decay-corrected-treatment-plans-for-the-treatment-of-tandem-based-cervical-hdr-brachytherapy
#19
M Goyal, J Manjhi, T Kehwar, D Rai, J Barker, B Heintz, K Shide
PURPOSE: This study evaluated dosimetric parameters for actual treatment plans versus decay corrected treatment plans for cervical HDR brachytherapy. METHODS: 125 plans of 25 patients, who received 5 fractions of HDR brachytherapy, were evaluated in this study. Dose was prescribed to point A (ICRU-38) and High risk clinical tumor volume (HR-CTV) and organs at risk (OAR) were, retrospectively, delineated on original CT images by treating physician. First HDR plan was considered as reference plan and decay correction was applied to calculate treatment time for subsequent fractions, and was applied, retrospectively, to determine point A, HR-CTV D90, and rectum and bladder doses...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046860/su-f-t-14-dosimetric-impacts-of-various-uncertainties-in-cervical-cancer-hdr-brachytherapy-are-conventional-point-doses-good-surrogates-for-3d-dosimetry
#20
X Liang, D Zheng, X Zhang, G Narayanasamy, S Morrill, J Penagaricano, N Paudel, Z Li
PURPOSE: In the context of evaluating dosimetric impacts of a variety of uncertainties involved in HDR Tandem-and-Ovoid treatment, to study the correlations between conventional point doses and 3D volumetric doses. METHODS: For 5 cervical cancer patients treated with HDR T&O, 150 plans were retrospectively created to study dosimetric impacts of the following uncertainties: (1) inter-fractional applicator displacement between two treatment fractions within a single insertion by applying Fraction#1 plan to Fraction#2 CT; (2) positional dwell error simulated from -5mm to 5mm in 1mm steps; (3) simulated temporal dwell error of 0...
June 2016: Medical Physics
keyword
keyword
52773
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"