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Breast volume measurement

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https://www.readbyqxmd.com/read/28323572/bilateral-changes-in-deep-tissue-environment-after-manual-lymphatic-drainage-in-patients-with-breast-cancer-treatment-related-lymphedema
#1
Paula M C Donahue, Rachelle Crescenzi, Allison O Scott, Vaughn Braxton, Aditi Desai, Seth A Smith, John Jordi, Ingrid M Meszoely, Ana M Grau, Rondi M Kauffmann, Raeshell S Sweeting, Kandace Spotanski, Sheila H Ridner, Manus J Donahue
BACKGROUND: Breast cancer treatment-related lymphedema (BCRL) arises from a mechanical insufficiency following cancer therapies. Early BCRL detection and personalized intervention require an improved understanding of the physiological processes that initiate lymphatic impairment. Here, internal magnetic resonance imaging (MRI) measures of the tissue microenvironment were paired with clinical measures of tissue structure to test fundamental hypotheses regarding structural tissue and muscle changes after the commonly used therapeutic intervention of manual lymphatic drainage (MLD)...
March 2017: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/28300372/lung-volume-reproducibility-under-abc-control-and-self-sustained-breath-holding
#2
Evangelia Kaza, Alex Dunlop, Rafal Panek, David J Collins, Matthew Orton, Richard Symonds-Tayler, Dualta McQuaid, Erica Scurr, Vibeke Hansen, Martin O Leach
An Active Breathing Coordinator (ABC) can be employed to induce breath-holds during CT imaging and radiotherapy of lung, breast and liver cancer, and recently during lung cancer MRI. The apparatus measures and controls respiratory volume, hence subject lung volume reproducibility is its principal measure of effectiveness. To assess ABC control quality, the intra-session reproducibility of ABC-induced lung volumes was evaluated and compared with that reached by applying the clinical standard of operator-guided self-sustained breath-holds on healthy volunteers during MRI...
March 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28298015/toward-the-complete-control-of-brain-metastases-using-surveillance-screening-and-stereotactic-radiosurgery
#3
Amparo Wolf, Svetlana Kvint, Abraham Chachoua, Anna Pavlick, Melissa Wilson, Bernadine Donahue, John G Golfinos, Joshua Silverman, Douglas Kondziolka
OBJECTIVE The incidence of brain metastases is increasing with improved systemic therapies, many of which have a limited impact on intracranial disease. Stereotactic radiosurgery (SRS) is a first-line management option for brain metastases. The purpose of this study was to determine if there is a threshold tumor size below which local control (LC) rates approach 100%, and to relate these findings to the use of routine surveillance brain imaging. METHODS From a prospective registry, 200 patients with 1237 brain metastases were identified who underwent SRS between December 2012 and May 2015...
February 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28297426/mri-geometric-distortion-impact-on-tangential-whole-breast-imrt
#4
Amy Walker, Peter Metcalfe, Gary Liney, Vikneswary Batumalai, Kylie Dundas, Carri Glide-Hurst, Geoff P Delaney, Miriam Boxer, Mei Ling Yap, Jason Dowling, David Rivest-Henault, Elise Pogson, Lois Holloway
The purpose of this study was to determine the impact of magnetic resonance imaging (MRI) geometric distortions when using MRI for target delineation and planning for whole-breast, intensity-modulated radiotherapy (IMRT). Residual system distortions and combined systematic and patient-induced distortions are considered. This retrospective study investigated 18 patients who underwent whole-breast external beam radiotherapy, where both CT and MRIs were acquired for treatment planning. Distortion phantoms were imaged on two MRI systems, dedicated to radiotherapy planning (a wide, closed-bore 3T and an open-bore 1T)...
September 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28295375/x-ray-scatter-correction-for-dedicated-cone-beam-breast-ct-using-a-forward-projection-model
#5
Linxi Shi, Srinivasan Vedantham, Andrew Karellas, Lei Zhu
PURPOSE: The quality of dedicated cone-beam breast CT (CBBCT) imaging is fundamentally limited by x-ray scatter contamination due to the large irradiation volume. In this paper, we propose a scatter correction method for CBBCT using a novel forward projection model with high correction efficacy and reliability. METHOD: We first coarsely segment the uncorrected, first-pass, reconstructed CBBCT images into binary-object maps and assign the segmented fibroglandular and adipose tissue with the correct attenuation coefficients based on the mean x-ray energy...
March 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/28291926/development-of-a-deep-inspiration-breath-hold-system-for-radiotherapy-utilizing-a-laser-distance-measurer
#6
Christer Andre Jensen, Nils Skottner, Jomar Frengen, Jo-Åsmund Lund
Deep inspiration breath-hold (DIBH) is a technique for treating left-sided breast cancer (LSBC). In modern radiotherapy, one of the main aims is to exclude the heart from the beam aperture with an individualized beam design for LSBC. A deep inhalation will raise the chest wall while the volume of the lungs increase, this will again push the heart away from the breast to be treated. There are a few commercial DIBH systems, both invasive and noninvasive. We present an alternative noninvasive DIBH system based upon an industrial laser distance measurer...
January 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28290354/development-of-a-phantom-to-test-fully-automated-breast-density-software-a-work-in-progress
#7
G G Waade, S Hofvind, J D Thompson, R Highnam, P Hogg
OBJECTIVES: Mammographic density (MD) is an independent risk factor for breast cancer and may have a future role for stratified screening. Automated software can estimate MD but the relationship between breast thickness reduction and MD is not fully understood. Our aim is to develop a deformable breast phantom to assess automated density software and the impact of breast thickness reduction on MD. METHODS: Several different configurations of poly vinyl alcohol (PVAL) phantoms were created...
February 2017: Radiography
https://www.readbyqxmd.com/read/28289827/correlation-of-prediction-and-actual-outcome-of-three-dimensional-simulation-in-breast-augmentation-using-a-cloud-based-program
#8
Joshua Vorstenbosch, Avi Islur
BACKGROUND: Breast augmentation is among the most frequently performed cosmetic plastic surgeries. Providing patients with "realistic" 3D simulations of breast augmentation outcomes is becoming increasingly common. Until recently, such programs were costly and required significant equipment, training, and office space. New simple user-friendly cloud-based programs have been developed, but to date there remains a paucity of objective evidence comparing these 3D simulations with the post-operative outcomes...
March 13, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28281859/geometrical-uncertainty-of-heart-position-in-deep-inspiration-breath-hold-radiotherapy-of-left-sided-breast-cancer-patients
#9
Tuomas Koivumäki, Juuso Tujunen, Tuomas Virén, Janne Heikkilä, Jan Seppälä
BACKGROUND: This study aimed to determine the geometrical uncertainty of the position of the heart with daily cone beam computed tomography (CBCT) during deep-inspiration breath-hold (DIBH) treatment of the left breast. MATERIAL AND METHODS: A visually guided optical respiratory monitoring system was used in DIBH treatment of 15 breast cancer patients. Heart position was determined in relation to the planning target volume (PTV) in 225 fractions in which daily low-dose CBCT images were compared with planning CT images...
March 10, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28280676/the-telemark-breast-score-a-valid-method-for-evaluation-of-outcome-after-breast-surgery
#10
Anadi Begic, Birgit Stark
BACKGROUND: "Telemark Breast Score" (TBS) has been developed at Telemark Hospital in Norway for evaluation of results after breast surgery based on standardized patients' photographs taken as a part of daily routine. Its reliability has recently been tested and approved. The external validity of the TBS was assessed by matching its data against the internationally recognized Breast-Q (BQ) questionnaire as a further step to study the validity of this new tool. METHODS: The ideal distribution of breast volume is 45% of the total volume above and 55% below the nipple, and a 40° slope line at the upper pole...
February 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28278170/rapid-on-line-detection-and-grading-of-wooden-breast-myopathy-in-chicken-fillets-by-near-infrared-spectroscopy
#11
Jens Petter Wold, Eva Veiseth-Kent, Vibeke Høst, Atle Løvland
The main objective of this work was to develop a method for rapid and non-destructive detection and grading of wooden breast (WB) syndrome in chicken breast fillets. Near-infrared (NIR) spectroscopy was chosen as detection method, and an industrial NIR scanner was applied and tested for large scale on-line detection of the syndrome. Two approaches were evaluated for discrimination of WB fillets: 1) Linear discriminant analysis based on NIR spectra only, and 2) a regression model for protein was made based on NIR spectra and the estimated concentrations of protein were used for discrimination...
2017: PloS One
https://www.readbyqxmd.com/read/28273058/magnetic-resonance-imaging-versus-3-dimensional-laser-scanning-for-breast-volume-assessment-after-breast-reconstruction
#12
Benjamin H L Howes, David I Watson, Beverley Fosh, Jia Miin Yip, Pakan Kleinig, Nicola Ruth Dean
BACKGROUND: There are several methods available for measuring breast volume in the clinical setting, but the comparability and accuracy of different methods is not well described. The ideal breast volume measurement technique should be low cost, comfortable for the patient, have no ionizing radiation and be non-invasive. METHODS: Prospective cohort study comparing a 3-dimensional (3D) laser scanner versus noncontrast magnetic resonance imaging (MRI) for breast volume assessment...
April 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28270967/normalization-of-compression-induced-hemodynamics-in-patients-responding-to-neoadjuvant-chemotherapy-monitored-by-dynamic-tomographic-optical-breast-imaging-dtobi
#13
Amir Y Sajjadi, Steven J Isakoff, Bin Deng, Bhawana Singh, Christy M Wanyo, Qianqian Fang, Michelle C Specht, Lidia Schapira, Beverly Moy, Aditya Bardia, David A Boas, Stefan A Carp
We characterize novel breast cancer imaging biomarkers for monitoring neoadjuvant chemotherapy (NACT) and predicting outcome. Specifically, we recruited 30 patients for a pilot study in which NACT patients were imaged using dynamic tomographic optical breast imaging (DTOBI) to quantify the hemodynamic changes due to partial mammographic compression. DTOBI scans were obtained pre-treatment (referred to as day 0), as well as 7 and 30 days into therapy on female patients undergoing NACT. We present data for the 13 patients who participated in both day 0 and 7 measurements and had evaluable data, of which 7 also returned for day 30 measurements...
February 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28264567/microfluidic-impedance-cytometer-with-inertial-focusing-and-liquid-electrodes-for-high-throughput-cell-counting-and-discrimination
#14
Wenlai Tang, Dezhi Tang, Zhonghua Ni, Nan Xiang, Hong Yi
In this paper, we present a novel impedance microcytometer integrated with inertial focusing and liquid electrode techniques for high-throughput cell counting and discrimination. The inertial prefocusing unit orders cells into a determinate train to reduce the possibility of cell adhesions and ensure that only one cell passes through detection region at a time, which improves the accuracy of downstream detection. The liquid electrodes are constructed by inserting Ag/AgCl wires into the electrode chambers filled with flowing highly conductive electrolyte solutions, which have a high detection sensitivity while requiring a simple fabrication process...
March 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28260217/anatomical-basis-of-the-extended-tdap-flap-study-of-its-territories-of-vascularization-and-its-volume
#15
Dast Sandy, Havet Eric, Dessena Lidia, Abdulshakoor Abeer, Alharbi Mohammed, Vaucher Richard, Herlin Christian, Sinna Raphael
INTRODUCTION: The concept of extended thoracodorsal artery perforator (TDAP) flap was described in 2015 for breast reconstruction. Our anatomical study aims to identify the territories vascularised by the thoracodorsal artery perforator via the deep muscular fascial network. The second goal was to define the volume of the extended TDAP flap. MATERIALS AND METHOD: Ten extended TDAP flaps were dissected on 5 fresh human cadavers. Around the classical skin paddle of a TDAP flap, the dissections were performed in a subfascial level, including the muscular fascia and the adipose tissue compartments to increase the volume of the flap...
March 4, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28257149/pubertal-testis-volume-age-at-pubertal-onset-and-adolescent-blood-pressure-evidence-from-hong-kong-s-children-of-1997-birth-cohort
#16
Man Ki Kwok, Gabriel M Leung, C Mary Schooling
OBJECTIVES: A warning from Health Canada suggests that testosterone increases blood pressure (BP). No evidence from large randomized controlled trials is available, and observational studies are confounded by ill-health lowering serum testosterone. To address the evidence gap, we assessed the association of pubertal testicular volume, as a reflection of testosterone production, with BP. METHODS: We examined whether testicular volume was associated with sex-, age-, and height-standardized BP z-score at ∼13 years in a population-representative Chinese birth cohort (n = 5195, 63% follow-up)...
March 3, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28253106/computer-aided-diagnosis-generated-kinetic-features-of-breast-cancer-at-preoperative-mr-imaging-association-with-disease-free-survival-of-patients-with-primary-operable-invasive-breast-cancer
#17
Jin Joo Kim, Jin You Kim, Hyun Jung Kang, Jong Ki Shin, Taewoo Kang, Seok Won Lee, Young Tae Bae
Purpose To retrospectively investigate the relationship between the kinetic features of breast cancer assessed with computer-aided diagnosis (CAD) at preoperative magnetic resonance (MR) imaging and disease-free survival in patients with primary operable invasive breast cancer. Materials and Methods This retrospective study was approved by the institutional review board. The requirement to obtain informed consent was waived. The authors identified 329 consecutive women (mean age, 52.9 years; age range, 32-88 years) with newly diagnosed invasive breast cancer who had undergone preoperative MR imaging and surgery between January 2012 and February 2013...
March 2, 2017: Radiology
https://www.readbyqxmd.com/read/28252545/reduction-of-the-areolar-diameter-after-ultrasound-assisted-liposuction-for-gynecomastia
#18
Mustafa Keskin, Mustafa Sutcu, Mustafa Hanci, Bulent Cigsar
BACKGROUND: One of the clinical aspects characterizing gynecomastia is the enlargement of the nipple-areolar complex (NAC) due to hypertrophic breast glands, and the excessive fatty tissue underneath. OBJECTIVE: The purpose of this study was to quantify the reduction of the areolar diameter after ultrasound-assisted liposuction (UAL) of the male breast. METHODS: The horizontal diameters of the NACs of 30 men who underwent UAL were measured before surgery, 1 month after surgery and 6 months after surgery in a standard fashion...
March 1, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28230714/assessment-of-skeletal-tumour-burden-on-18f-naf-pet-ct-using-a-new-quantitative-method
#19
Paula Lapa, Margarida Marques, Gracinda Costa, Andrei Iagaru, João Pedroso de Lima
PURPOSE: The purpose of this study was to test a method of quantifying skeletal tumour burden with F-NaF PET/CT. PATIENTS AND METHODS: We retrospectively reviewed the charts of 117 patients who underwent F-NaF PET/CT for the detection of bone metastases, 68 women and 49 men, 16-82 years old (mean±SD: 62.9±10.7 years). Mean standardized uptake values (SUVmean) were measured in five anatomic sites to evaluate normal skeleton activity. The influence of sex and age was investigated...
April 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28230532/optimization-of-volumetric-breast-density-estimation-in-digital-mammograms
#20
Katharina Holland, Albert Gubern-Merida, Ritse Mann, Nico Karssemeijer
Fibroglandular tissue volume and percent density can be estimated in unprocessed mammograms using a physics-based method, which relies on an internal reference value representing the projection of fat only. However, pixels representing fat only may not be present in dense breasts, causing an underestimation of density measurements. In this work, we investigate alternative approaches for obtaining a tissue reference value to improve density estimations, particularly in dense breasts. Two of three investigated reference values (F1, F2) are percentiles of the pixel value distribution in the breast interior (the contact area of breast and compression paddle)...
February 23, 2017: Physics in Medicine and Biology
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