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https://www.readbyqxmd.com/read/29781162/predictors-of-ultrasound-failure-to-detect-hepatocellular-carcinoma
#1
Mariya L Samoylova, Neil Mehta, John P Roberts, Francis Y Yao
Current guidelines recommend ultrasound (US) for hepatocellular carcinoma (HCC) surveillance in cirrhosis. We assess predictors of decreased US sensitivity for detecting HCC. At a single U.S. center, all HCC patients evaluated for liver transplant (LT) receive an abdominal US. In consecutive patients presenting 2007-2015, untreated lesions found on CT/MRI within 3 months of US were compared with US findings. Multivariable logistic regression models compared US sensitivities by patient characteristics. Of 1008 patients completing LT evaluation, 47...
May 21, 2018: Liver Transplantation
https://www.readbyqxmd.com/read/29778636/surgeon-performed-ultrasound-for-the-assessment-of-parotid-masses
#2
Melissa Zheng, Karolina A Plonowska, Madeleine P Strohl, William R Ryan
BACKGROUND: Studies on parotid gland ultrasound assessments performed specifically by surgeons are seldom reported. METHODS: Retrospective series of a single academic surgeon experience, analyzing 70 new parotid masses with evaluable preoperative SP-US characteristics, location measurements, and perioperative events. RESULTS: 31/70 masses were malignant. SP-US characteristics significantly associated with both malignancy and positive margins included extraparenchymal extension, irregular borders, hypervascularity, infiltration, and the lack of deep enhancement...
April 16, 2018: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/29774379/-agenesis-of-the-corpus-callosum
#3
REVIEW
J M Lieb, F J Ahlhelm
CLINICAL ISSUE: Agenesis of the corpus callosum is reported to have an incidence of about 1:4000 live births. In 30-45% of cases, genetic etiologies can be identified, e. g., 10% chromosomal anomalies and 20-35% genetic syndromes. Environmental factors like fetal alcohol syndrome are also known to be prone to callosal agenesis. Callosal agenesis can be complete or partial and can be isolated or associated with other central nervous system (CNS) anomalies (e. g., cortical developmental disorders, callosal lipoma, intracranial cysts) or extra-CNS anomalies (e...
May 17, 2018: Der Radiologe
https://www.readbyqxmd.com/read/29767316/-ceus-diagnosis-of-solid-renal-tumors
#4
REVIEW
K Stock, H Kübler, T Maurer, J Slotta-Huspenina, K Holzapfel
CLINICAL ISSUE: Renal lesions are detected earlier, often as a result of ultrasound examinations. However, the imaging-based differential diagnosis of different tumour entities remains challenging STANDARD RADIOLOGICAL METHODS: All renal tumours >1 cm should be evaluated for malignancy by computed tomography (CT) or magnetic resonance imaging (MRI). If an angiomyolipoma diagnosis cannot be established with imaging, further diagnostics are appropriate or if malignant progression is suspected, then multidisciplinary discussion for TNM-staging based uro-oncologic therapy is usual...
May 16, 2018: Der Radiologe
https://www.readbyqxmd.com/read/29759948/measuring-relative-positions-and-orientations-of-the-tibia-with-respect-to-the-femur-using-one-channel-3d-tracked-a-mode-ultrasound-tracking-system-a-cadaveric-study
#5
Kenan Niu, Jasper Homminga, Victor Sluiter, André Sprengers, Nico Verdonschot
The purpose of this study is to investigate the technical feasibility of measuring relative positions and orientations of the tibia with respect to the femur in an in-vitro experiment by using a 3D-tracked A-mode ultrasound system and to determine its accuracy of angular and translational measurements. As A-mode ultrasound is capable of detecting bone surface through soft tissue in a non-invasive manner, the combination of a single A-mode ultrasound transducer with an optical motion tracking system provides the possibility for digitizing the 3D locations of bony points at different anatomical regions on the thigh and the shank...
May 11, 2018: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29758936/evaluation-of-integrated-color-coded-perfusion-analysis-for-contrast-enhanced-ultrasound-ceus-after-percutaneous-interventions-for-malignant-liver-lesions-first-results
#6
I Wiesinger, L P Beyer, N Zausig, N Verloh, P Wiggermann, C Stroszczynski, E M Jung
BACKGROUND:  With the rising number of percutaneous ablation therapies in malignant liver lesions there is a need of reliable diagnostics after the intervention to differentiate between reactive changes and tumor. PURPOSE: To assess the success of percutaneous ablation therapies for malignant liver lesions using CEUS with perfusion analysis. MATERIAL AND METHODS: Retrospective analysis of perfusion analysis for 67 patients with 94 malignant liver lesions, treated with ablation therapies...
2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29755001/understanding-why-patients-no-show-observations-of-2-9-million-outpatient-imaging-visits-over-16-years
#7
Joshua I Rosenbaum, Rebecca J Mieloszyk, Christopher S Hall, Daniel S Hippe, Martin L Gunn, Puneet Bhargava
PURPOSE: To understand why patients "no-show" for imaging appointments, and to provide new insights for improving resource utilization. MATERIALS AND METHODS: We conducted a retrospective analysis of nearly 2.9 million outpatient examinations in our radiology information system from 2000 to 2015 at our multihospital academic institution. No-show visits were identified by the "reason code" entry "NOSHOW" in our radiology information system...
May 10, 2018: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29754940/radioguided-hepatic-resection-with-18-f-dopa-in-a-patient-with-metastatic-medullary-thyroid-carcinoma
#8
J López-Gómez, S Medina-Ornelas, M A Salazar-Álvarez, M Álvarez-Bojórquez, N Zaragoza-Cruz, J Melchor-Ruan, A Álvarez-Cano
INTRODUCTION: Medullary carcinoma accounts for 1-2% of all thyroid malignancies. 13-20% of patients present with distant metastasis, with 45% of the cases affecting the liver. CLINICAL CASE: A 50-year-old woman, diagnosed with medullary thyroid carcinoma, was treated with total thyroidectomy and a modified neck dissection in 1999. Two lymph node recurrences in the neck were treated with surgical resection; during surveillance, she developed elevated calcitonin levels, the recurrence site was identified with 18 F-DOPA PET/CT in the liver...
May 10, 2018: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/29731206/recommendation-patterns-among-gynaecologists-and-radiologists-for-adnexal-masses-on-ultrasound
#9
Nathalie Bleau, Alexandre Gauvreau, Amira El-Messidi, Haim Arie Abenhaim
OBJECTIVE: Ultrasound is the primary modality used to evaluate adnexal lesions. Follow-up recommendations for ovarian cysts remain controversial between gynaecologists and radiologists. The objective of this study was to compare practice patterns for adnexal masses described on ultrasound on the basis of the interpreter's field of specialty. METHODS: This study was conducted within the McGill University Hospital Network at two hospitals that differ in the department of interpretation of pelvic ultrasounds...
May 2018: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/29730256/the-role-of-imaging-in-prostate-cancer-care-pathway-novel-approaches-to-urologic-management-challenges-along-ten-imaging-touch-points
#10
REVIEW
Qian Li, Feixiang Xiang, Xueying Lin, Joseph R Grajo, Long Yang, Yufeng Xu, Yu Duan, Urvi Vyas, Mukesh Harisinghani, Umar Mahmood, Anthony E Samir
We map out a typical prostate cancer care pathway through discussion of updates on modern imaging. Multiparametric MRI (mpMRI) is the most sensitive and specific imaging tool for diagnosis and local staging, transrectal ultrasound remains the most widely used technique for prostate biopsy guidance, CT and bone scan are useful in initial staging and recurrence detection. Novel imaging techniques in ultrasound elastography and mpMRI allow for increased lesion detection sensitivity and have the potential to enhance biopsy, while the development of new PET radiotracers has great promise for improved detection of local and metastatic disease in patients with biochemical recurrence...
May 3, 2018: Urology
https://www.readbyqxmd.com/read/29729793/imaging-of-hallux-valgus-how-to-approach-the-deformity
#11
REVIEW
Matthew James Welck, Naji Al-Khudairi
This article describes the pathogenesis of hallux valgus (HV) and the traditional ways to image the deformities. It also discusses up-to-date advances and research in the field of imaging in HV. This includes weight-bearing computed tomography (CT) scanning, MRI, ultrasound and intraoperative imaging.
June 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29724426/acr-appropriateness-criteria-%C3%A2-chronic-wrist-pain
#12
David A Rubin, Catherine C Roberts, Jenny T Bencardino, Angela M Bell, R Carter Cassidy, Eric Y Chang, Soterios Gyftopoulos, Darlene F Metter, William B Morrison, Naveen Subhas, Siddharth Tambar, Jeffrey D Towers, Joseph S Yu, Mark J Kransdorf
Radiographs are indicated as the first imaging test in all patients with chronic wrist pain, regardless of the suspected diagnosis. When radiographs are normal or equivocal, advanced imaging with MRI (without or without intravenous contrast or following arthrography), CT (usually without contrast), and ultrasound each has a role in establishing a diagnosis. Furthermore, these examinations may contribute to staging disease, treatment planning, and prognostication, even when radiographs are diagnostic of a specific condition...
May 2018: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29724420/acr-appropriateness-criteria-%C3%A2-shoulder-pain-traumatic
#13
Behrang Amini, Nicholas M Beckmann, Francesca D Beaman, Daniel E Wessell, Stephanie A Bernard, R Carter Cassidy, Gregory J Czuczman, Jennifer L Demertzis, Bennett S Greenspan, Bharti Khurana, Kenneth S Lee, Leon Lenchik, Kambiz Motamedi, Akash Sharma, Eric A Walker, Mark J Kransdorf
Traumatic shoulder pain is pain directly attributed to a traumatic event, either acute or chronic. This pain may be the result of either fracture (the clavicle, scapula, or proximal humerus) or soft-tissue injury (most commonly of the rotator cuff, acromioclavicular ligaments, or labroligamentous complex). Imaging assessment of traumatic shoulder pain begins with conventional radiography and, depending on physical examination findings, will require MRI or MR arthrography for assessment of soft-tissue injuries and CT for delineation of fracture planes...
May 2018: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29724418/acr-appropriateness-criteria-%C3%A2-pretreatment-staging-of-muscle-invasive-bladder-cancer
#14
Christian B van der Pol, V Anik Sahni, Steven C Eberhardt, Aytekin Oto, Oguz Akin, Lauren F Alexander, Brian C Allen, Fergus V Coakley, Adam T Froemming, Pat F Fulgham, Keyanoosh Hosseinzadeh, Jodi K Maranchie, Rekha N Mody, Nicola Schieda, David M Schuster, Aradhana M Venkatesan, Carolyn L Wang, Mark E Lockhart
Muscle-invasive bladder cancer (MIBC) has a tendency toward urothelial multifocality and is at risk for local and distant spread, most commonly to the lymph nodes, bone, lung, liver, and peritoneum. Pretreatment staging of MIBC should include imaging of the urothelial upper tract for synchronous lesions; imaging of the chest, abdomen, and pelvis for metastases; and MRI pelvis for local staging. CT abdomen and pelvis without and with contrast (CT urogram) is recommended to assess the urothelium and abdominopelvic organs...
May 2018: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29723846/diagnostic-value-of-nineteen-different-imaging-methods-for-patients-with-breast-cancer-a-network-meta-analysis
#15
Xiao-Hong Zhang, Can Xiao
BACKGROUND/AIMS: We performed a network meta-analysis (NMA) to investigate and compare the diagnostic value of 19 different imaging methods used for breast cancer (BC). METHODS: Cochrane Library, PubMed and EMBASE were searched to collect the relevant literature from the inception of the study until November 2016. A combination of direct and indirect comparisons was performed using an NMA to evaluate the combined odd ratios (OR) and draw the surface under the cumulative ranking curves (SUCRA) of the diagnostic value of different imaging methods for BC...
April 28, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29722568/liver-fat-imaging-a-clinical-overview-of-ultrasound-ct-and-mr-imaging
#16
Yingzhen Zhang, Kathryn J Fowler, Gavin Hamilton, Jennifer Cui, Ethan Z Sy, Michelle Balanay, Jonathan C Hooker, Nikolaus M Szeverenyi, Claude B Sirlin
Hepatic steatosis is a frequently encountered imaging finding that may indicate chronic liver disease, the most common of which is nonalcoholic fatty liver disease (NAFLD). NAFLD is implicated in the development of systemic diseases and its progressive phenotype, nonalcoholic steatohepatitis (NASH), leads to increased liver-specific morbidity and mortality. With the rising obesity epidemic and advent of novel therapeutics aimed at altering metabolism, there is a growing need to quantify and monitor liver steatosis...
May 3, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29721242/abdominal-rectus-muscle-pyomyositis-report-of-a-case-and-review-of-the-literature
#17
Tilemachos Fountoukis, Nikolaos Tsatsanidis, Maria Tilkeridou, Ioannis Konstantinou, Pantelis Fytas, Ioannis Skandalos
Pyomyositis is an uncommon primary bacterial infection of skeletal muscles, usually caused by Staphylococcus aureus. Predisposing factors for pyomyositis include immunodeficiency, trauma, injection drug use, concurrent infection and malnutrition. The diagnosis, staging of the disease and differential diagnosis are established by ultrasound, CT and MRI. Treatment involves surgical drainage and antibiotic therapy. We report a case of abdominal rectus muscle pyomyositis, which constitutes, as far as we know, the second reported in bibliography, while Prevotella disiens is firstly reported as causative agent...
March 29, 2018: Infectious Disease Reports
https://www.readbyqxmd.com/read/29716799/emergency-and-critical-care-applications-for-contrast-enhanced-ultrasound
#18
REVIEW
Tobias Kummer, Laura Oh, Mary Beth Phelan, Robert D Huang, Jason T Nomura, Srikar Adhikari
INTRODUCTION: Contrast-enhanced ultrasound (CEUS) using intravascular microbubbles has potential to revolutionize point-of-care ultrasonography by expanding the use of ultrasonography into clinical scenarios previously reserved for computed tomography (CT), magnetic resonance imaging, or angiography. METHODS: We performed a literature search and report clinical experience to provide an introduction to CEUS and describe its current applications for point-of-care indications...
April 22, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29709055/interventions-for-investigating-and-identifying-the-causes-of-stillbirth
#19
REVIEW
Aleena M Wojcieszek, Emily Shepherd, Philippa Middleton, Glenn Gardener, David A Ellwood, Elizabeth M McClure, Katherine J Gold, Teck Yee Khong, Robert M Silver, Jan Jaap Hm Erwich, Vicki Flenady
BACKGROUND: Identification of the causes of stillbirth is critical to the primary prevention of stillbirth and to the provision of optimal care in subsequent pregnancies. A wide variety of investigations are available, but there is currently no consensus on the optimal approach. Given their cost and potential to add further emotional burden to parents, there is a need to systematically assess the effect of these interventions on outcomes for parents, including psychosocial outcomes, economic costs, and on rates of diagnosis of the causes of stillbirth...
April 30, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29704013/-ceus-diagnostic-of-malignant-liver-lesions
#20
REVIEW
G Negrão de Figueiredo, K Müller-Peltzer, J Rübenthaler, D A Clevert
CLINICAL/METHODICAL ISSUE: Cross-sectional modalities or conventional ultrasound are not always able to sufficiently identify and characterize malignant liver lesions. STANDARD RADIOLOGICAL METHODS: The evaluation of malignant liver lesions in conventional ultrasound relies on echostructure, shape and borders, but often warrants additional contrast-enhanced computed tomography (CT) or magnetic resonance imaging (MRI) studies. METHODICAL INNOVATIONS: Contrast-enhanced ultrasound (CEUS) is a relatively safe imaging technique used for the detection and characterization of malignant liver lesions...
April 27, 2018: Der Radiologe
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