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https://www.readbyqxmd.com/read/29243669/simultaneous-tumor-and-surrogate-motion-tracking-with-dynamic-mri-for-radiation-therapy-planning
#1
Seyoun Park, Rana Farah, Steven M Shea, Erik J Tryggestad, Russell Hales, Junghoon Lee
Respiration-induced tumor motion is a major obstacle for achieving high-precision radiotherapy of cancers in the thoracic and abdominal regions. Surrogate-based estimation and tracking methods are commonly used in radiotherapy, but with limited understanding of quantified correlation to tumor motion. In this study, we propose a method to simultaneously track the lung tumor and external surrogates to evaluate their spatial correlation in a quantitative way using dynamic MRI, which allows real-time acquisition without ionizing radiation exposure...
December 15, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29241916/etiology-and-management-of-primary-amenorrhoea-a-study-of-102-cases-at-tertiary-centre
#2
Alka Kriplani, Manu Goyal, Garima Kachhawa, Reeta Mahey, Vidushi Kulshrestha
OBJECTIVE: To determine the prevalence of etiologic causes of primary amenorrhea in Indian population. MATERIALS AND METHODS: A retrospective study was performed using 102 complete medical records of women with primary amenorrhea who attended the Gynaecologic Endocrinology Clinic, Department of Obstetrics and Gynaecology, AIIMS, New Delhi from September 2012 to September 2015. Cases were analysed according to clinical profile, development of secondary sexual characteristics, physical examination, pelvic and rectal examination, X-ray of chest and lumbo-sacral spine, hormone profile, pelvic USG, MRI, and cytogenetic study including karyotype...
December 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29237455/molecular-and-histological-effects-of-mr-guided-pulsed-focused-ultrasound-to-the-rat-heart
#3
Kee W Jang, Tsang-Wei Tu, Matthew E Nagle, Bobbi K Lewis, Scott R Burks, Joseph A Frank
BACKGROUND: Image-guided high intensity focused ultrasound has been used as an extracorporeal cardiac pacing tool and to enhance homing of stem cells to targeted tissues. However, molecular changes in the myocardium after sonication have not been widely investigated. Magnetic-resonance (MR)-guided pulsed focused ultrasound (pFUS) was targeted to the rat myocardium over a range of pressures and the microenvironmental and histological effects were evaluated over time. METHODS: Eight-to-ten-week-old Sprague-Dawley rats received T2-weighted MR images to target pFUS to the left ventricular and septum without cardiac or respiratory gating...
December 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29220208/changing-utilization-of-noninvasive-diagnostic-imaging-over-2-decades-an-examination-family-focused-analysis-of-medicare-claims-using-the-neiman-imaging-types-of-service-categorization-system
#4
David A Rosman, Richard Duszak, Wenyi Wang, Danny R Hughes, Andrew B Rosenkrantz
OBJECTIVE: The objective of our study was to use a new modality and body region categorization system to assess changing utilization of noninvasive diagnostic imaging in the Medicare fee-for-service population over a recent 20-year period (1994-2013). MATERIALS AND METHODS: All Medicare Part B Physician Fee Schedule services billed between 1994 and 2013 were identified using Physician/Supplier Procedure Summary master files. Billed codes for diagnostic imaging were classified using the Neiman Imaging Types of Service (NITOS) coding system by both modality and body region...
December 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29215416/cardiac-fibroma-an-uncommon-cause-of-a-fixed-defect-on-myocardial-perfusion-imaging
#5
Sarah Pittman, Pooja Sethi, Robert R Flavell, Miguel Hernandez Pampaloni
A 66-year-old woman was referred for evaluation of coronary artery disease. Myocardial perfusion imaging (MPI) was performed, and showed a medium-sized, severe fixed perfusion defect in the inferior and inferolateral wall from apex to midcavity. On review of prior imaging, it was noted that the patient had an incidental finding of an intramural cardiac mass on chest CT performed 8 years prior. Subsequent cardiac MRI showed findings consistent with a cardiac fibroma in the left ventricle, at the location of the perfusion defect on MPI...
December 5, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29197986/relationships-between-mri-fat-distributions-and-sleep-apnea-and-obesity-hypoventilation-syndrome-in-very-obese-patients
#6
C D Turnbull, S H Wang, A R Manuel, B T Keenan, A G McIntyre, R J Schwab, J R Stradling
PURPOSE: Obesity is associated with both obstructive sleep apnea (OSA) and obesity hypoventilation. Differences in adipose tissue distribution are thought to underlie the development of both OSA and hypoventilation. We explored the relationships between the distribution of upper airway, neck, chest, abdominal and muscle fat in very obese individuals. METHODS: We conducted a cross-sectional cohort study of individuals presenting to a tertiary sleep clinic or for assessment for bariatric surgery...
December 2, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29195710/health-it-and-inappropriate-utilization-of-outpatient-imaging-a-cross-sectional-study-of-u-s-hospitals
#7
Ajit Appari, M Eric Johnson, Denise L Anthony
OBJECTIVE: To determine whether the use of information technology (IT), measured by Meaningful Use capability, is associated with lower rates of inappropriate utilization of imaging services in hospital outpatient settings. RESEARCH DESIGN: A retrospective cross-sectional analysis of 3332 nonfederal U.S. hospitals using data from: Hospital Compare (2011 outpatient imaging efficiency measures), HIMSS Analytics (2009 health IT), and Health Indicator Warehouse (market characteristics)...
January 2018: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/29187687/-symmetrical-lesions-of-the-cerebral-peduncles-and-internal-capsules-on-mri-in-a-patient-with-extranodal-nk-t-cell-lymphoma
#8
Yuko Takeuchi, Tomotsugu Kaga, Miho Ieda, Yumi Kojima, Jun Ochiai, Chiyuki Mabuchi
A 72-year-old man was admitted to our hospital because of subacute progressive consciousness disturbance. FLAIR images showed diffuse high intensity areas in the bilateral thalamus, basal ganglia, and white matter. Chest CT revealed a mass in the right lung. The patient was diagnosed with extranodal natural killer/T cell lymphoma (ENKL) according to the results of a biopsy of the right pulmonary mass. The FLAIR images showed diffuse white matter lesions, without a mass such as lymphomatosis cerebri. On diffusion-weighted images, symmetrical high-intensity lesions of the cerebral peduncle and the internal capsule suggested high-density lymphoma cells around neurons...
November 28, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/29178092/-updates-of-2017-esmo-guideline-for-rectal-cancer
#9
Gong Chen, Yi Wang
Compared with the 2013 version, the basic strategies of diagnosis and treatment for rectal cancer in the 2017 version guideline remain the same. These strategies include accurate local staging approaches which combines digital rectal examination, endorectal ultrasound (ERUS), and high resolution pelvic MRI, and local recurrence risk grading system which combines tumor location/distance, T staging, N staging, EMVI (extramural vascular invasion) and MRF(mesorectal fascia). And personalized therapeutic principle based on the above local risk grading...
November 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29170172/eosinophilic-myocarditis-as-a-first-presentation-of-eosinophilic-granulomatosis-with-polyangiitis-churg-strauss-syndrome
#10
Ronan Bluett, David McDonnell, Claire O'Dowling, Carl Vaughan
We present the case of a 28-year-old man who presented with chest pain and elevated cardiac biomarkers, with no evidence of acute ischaemia. He had a pronounced eosinophilia, abnormal echocardiographic, cardiac MRI and CT findings. He underwent transbronchial biopsy of carinal lymph nodes and of lung parenchyma. Endomyocardial biopsy yielded an eosinophilic infiltrate. He was treated with high dose glucocorticoids and made a rapid recovery. Testing for FIP1L1-PDGFRA and other BCR-ABL1 mutations was negative...
November 23, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29165766/clinical-analysis-of-59-children-with-hand-foot-and-mouth-diseases-due-to-enterovirus-ev71-and-concomitant-viral-encephalitis
#11
M-G Wang, H-M Sun, X-M Liu, X-Q Deng
OBJECTIVE: To analyzed the clinical features of children with HFMD and viral encephalitis and to summarize some treatments. PATIENTS AND METHODS: A total of 59 children with HFMD were included in this study. All children underwent complete blood count, blood biochemical test cerebrospinal fluid examination, chest X-ray and brain MRI. RESULTS: One child died 24 hours after admission due to central respiratory failure with myocardial damage...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29164364/highlights-on-mri-of-the-fetal-body
#12
REVIEW
Lucia Manganaro, Amanda Antonelli, Silvia Bernardo, Federica Capozza, Roberta Petrillo, Serena Satta, Valeria Vinci, Matteo Saldari, Francesca Maccioni, Laura Ballesio, Carlo Catalano
Fetal MRI is a level III diagnostic tool performed subsequently a level II prenatal ultrasound (US), in cases of inconclusive ultrasonographic diagnosis or when a further investigation is required to confirm or improve the diagnosis, to plan an appropriate pregnancy management. Fetal MRI plays an increasingly important role in the prenatal diagnosis of fetal neck, chest and abdominal malformations, even if its role has been amply demonstrated, especially, in the field of fetal CNS anomalies. Due to its multiparametricity and multiplanarity, MRI provides a detailed evaluation of the whole fetal respiratory, gastrointestinal and genitourinary systems, especially on T2-weighted (W) images, with a good tissue contrast resolution...
November 21, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/29157382/diagnostic-imaging-and-newer-modalities-for-thoracic-diseases-pet-computed-tomographic-imaging-and-endobronchial-ultrasound-for-staging-and-its-implication-for-lung-cancer
#13
REVIEW
Sarah J Counts, Anthony W Kim
Modalities to detect and characterize lung cancer are generally divided into those that are invasive [endobronchial ultrasound (EBUS), esophageal ultrasound (EUS), and electromagnetic navigational bronchoscopy (ENMB)] versus noninvasive [chest radiography (CXR), computed tomography (CT), positron emission tomography (PET), and magnetic resonance imaging (MRI)]. This chapter describes these modalities, the literature supporting their use, and delineates what tests to use to best evaluate the patient with lung cancer...
January 2018: PET Clinics
https://www.readbyqxmd.com/read/29145292/recurrent-spinal-primitive-neuroectodermal-tumor-with-brain-and-bone-metastases-a-case-report
#14
Frank Chen, Shyh-Shin Chiou, Sheng-Fung Lin, Ann-Shung Lieu, Yi-Ting Chen, Chih-Jen Huang
RATIONALE: Primary spinal primitive neuroectodermal tumor (PNET) is relatively rare in all age groups, and the prognosis in most cases of spinal PNETs appears to be poor, with a median patient survival of 1 to 2 years. We present a case with recurrent spinal PNET with brain and bone metastases that was successfully treated by multimodality treatment. PATIENT CONCERNS: A 14-year-old teenage girl had suffered from progressive left upper back pain with bilateral lower legs weakness and numbness for 1 year...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29143222/quantitative-analysis-of-the-level-of-readability-of-online-emergency-radiology-based-patient-education-resources
#15
David R Hansberry, Michael D'Angelo, Michael D White, Arpan V Prabhu, Mougnyan Cox, Nitin Agarwal, Sandeep Deshmukh
PURPOSE: The vast amount of information found on the internet, combined with its accessibility, makes it a widely utilized resource for Americans to find information pertaining to medical information. The field of radiology is no exception. In this paper, we assess the readability level of websites pertaining specifically to emergency radiology. METHODS: Using Google, 23 terms were searched, and the top 10 results were recorded. Each link was evaluated for its readability level using a set of ten reputable readability scales...
November 15, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/29132998/waiting-for-radiology-test-results-patient%C3%A2-expectations-and-emotional-disutility
#16
Sean Woolen, Ella A Kazerooni, Amber Wall, Kelly Parent, Shannon Cahalan, Mitchell Alameddine, Matthew S Davenport
PURPOSE: To measure patient willingness to wait and emotional disutility of waiting for outpatient imaging test results. METHODS: A prospective HIPAA-compliant multicenter outpatient quality improvement survey was administered by a trained interviewer to 218 outpatients from November 1, 2016, to February 1, 2017. The survey was vetted by patient- and family-centered care advocates with experience in survey design and underwent precognitive testing for readability...
November 9, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29130010/spontaneous-bilateral-sternoclavicular-joint-septic-arthritis-and-lumbar-discitis-an-unusual-case-in-a-healthy-adult
#17
Georgios Mamarelis, Mohammad Zain Sohail, Athanasios Mamarelis, Hassan Fawi, Jehangir Mahaluxmivala
Introduction: Septic arthritis of the sternoclavicular (SC) joint is a rare condition. Typically, it presents in patients with risk of infection and is usually unilateral. In this report, we describe a case of spontaneous bilateral sternoclavicular joint infection of an otherwise healthy adult. Case Presentation: A 67-year-old man presented in our hospital complaining of 2-week history of neck and chest pain which was radiating to his shoulders bilaterally. Clinical examination revealed erythema and swelling of the sternoclavicular area...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29125330/benign-and-malignant-enlarged-chest-nodes-staging-by-diffusion-weighted-mri-an-alternative-to-mediastinoscopy
#18
Monica Sigovan, Pia Akl, Caroline Mesmann, Francois Tronc, Salim Si Mohamed, Philippe Douek, Loic Boussel
OBJECTIVE: To evaluate the accuracy of diffusion weighted MRI with background suppression (DWIBS) in differentiating between malignant and benign mediastinal lymph-nodes. METHODS: Consecutive patients with enlarged mediastinal lymph-nodes underwent MRI DWIBS within 10 days prior to mediastinoscopy. Relative contrast ratios (RCR) were computed on b800 and apparent diffusion coefficient (ADC) maps by dividing the node signal with the chest muscle signal, using manually drawn regions of interest (ROIs) by radiologists, blinded to pathology...
November 10, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29124279/up-front-pet-ct-changes-treatment-intent-in-patients-with-head-and-neck-squamous-cell-carcinoma
#19
Max Rohde, Anne L Nielsen, Jørgen Johansen, Jens A Sørensen, Anabel Diaz, Jon T Asmussen, Oke Gerke, Anders Thomassen, Niels Gyldenkerne, Helle Døssing, Kristine Bjørndal, Poul Flemming Høilund-Carlsen, Christian Godballe
PURPOSE: In patients with newly diagnosed head and neck squamous cell carcinoma (HNSCC), we wanted to examine the differences in overall treatment decisions, i.e. curative versus palliative treatment intent, reached by a multidisciplinary team conference (MDTC) based on 18F-fluoro-deoxy-glucose-positron emission tomography/computed tomography (PET/CT) or chest X-ray + MRI of the head and neck (CXR/MRI). PATIENTS AND METHODS: This was a prospective blinded cohort study based on paired data...
November 10, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29122311/-uveitis-diagnostic-work-up-recommendations-from-an-expert-committee
#20
P Sève, B Bodaghi, S Trad, J Sellam, D Bellocq, P Bielefeld, D Sène, G Kaplanski, D Monnet, A Brézin, M Weber, D Saadoun, P Cacoub, C Chiquet, L Kodjikian
INTRODUCTION: Diagnostic work-up of uveitis involves many uncertainties. Search for an etiology should take into account the epidemiology of uveitis and focus on the most severe diseases or those, which can be treated. This work was undertaken to establish recommendations for the diagnosis work-up of uveitis. METHODS: Recommendations were developed by a multidisciplinary panel of 15 experts, including internists, ophthalmologists and a rheumatologist and are based on a review of the literature with regard to effectiveness of investigations and the results of the ULISSE study, which is the first prospective study assessing the efficiency of a standardized strategy for the etiological diagnosis of uveitis...
November 6, 2017: La Revue de Médecine Interne
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