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https://www.readbyqxmd.com/read/29777859/three-dimensional-model-of-the-female-perineum-and-pelvic-floor-muscles
#1
Géraldine Giraudet, Laurent Patrouix, Christian Fontaine, Xavier Demondion, Michel Cosson, Chrystèle Rubod
OBJECTIVE: The anatomy of the perineum and the pelvic diaphragm of woman is complex. A numerical complete three-dimensional (3D) model of every muscle of the woman pelvis doesn't exist. The pathophysiology of genital prolapse is still debated. Knowledge of anatomy is essential to better understand its mechanisms. The aim of this research was to build a complete three-dimensional model of the female perineum and pelvic floor muscles. STUDY DESIGN: To model the pelvic muscles we reconstructed them in three dimensions from tracing a magnetic resonance imaging (MRI) of a female pelvis from a cadaver...
May 16, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29773331/novel-use-of-viewray-mri-guidance-for-high-dose-rate-brachytherapy-in-the-treatment-of-cervical-cancer
#2
Huaising C Ko, Jessie Y Huang, Jessica R Miller, Rupak K Das, Charles R Wallace, Anna-Maria A De Costa, David M Francis, Margaret R Straub, Bethany M Anderson, Kristin A Bradley
PURPOSE: To characterize image quality and feasibility of using ViewRay MRI (VR)-guided brachytherapy planning for cervical cancer. METHODS AND MATERIALS: Cervical cancer patients receiving intracavitary brachytherapy with tandem and ovoids, planned using 0.35T VR MRI at our institution, were included in this series. The high-risk clinical target volume (HR-CTV), visible gross tumor volume, bladder, sigmoid, bowel, and rectum contours for each fraction of brachytherapy were evaluated for dosimetric parameters...
May 14, 2018: Brachytherapy
https://www.readbyqxmd.com/read/29724422/acr-appropriateness-criteria-%C3%A2-staging-and-follow-up-of-ovarian-cancer
#3
Stella K Kang, Caroline Reinhold, Mostafa Atri, Carol B Benson, Priyadarshani R Bhosale, Anuja Jhingran, Yulia Lakhman, Katherine E Maturen, Refky Nicola, Pari V Pandharipande, Gloria M Salazar, Thomas D Shipp, Lynn Simpson, William Small, Betsy L Sussman, Jennifer W Uyeda, Darci J Wall, Bradford P Whitcomb, Carolyn M Zelop, Phyllis Glanc
In the management of epithelial ovarian cancers, imaging is used for cancer detection and staging, both before and after initial treatment. The decision of whether to pursue initial cytoreductive surgery for ovarian cancer depends in part on accurate staging. Contrast-enhanced CT of the abdomen and pelvis (and chest where indicated) is the current imaging modality of choice for the initial staging evaluation of ovarian cancer. Fluorine-18-2-fluoro-2-deoxy-d-glucose PET/CT and MRI may be appropriate for problem-solving purposes, particularly when lesions are present on CT but considered indeterminate...
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
#4
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/29721598/current-utilization-and-procedural-practices-in-pediatric-whole-body-mri
#5
Gary R Schooler, Joseph T Davis, Heike E Daldrup-Link, Donald P Frush
BACKGROUND: Whole-body magnetic resonance imaging (MRI) is an evolving and increasingly powerful imaging tool with a variety of applications in the pediatric patient population. Variability exists among radiology practices in how this MRI tool is used and how it performed. OBJECTIVE: Our objective was to gain an improved understanding of technical and utilization practices in pediatric whole-body MRI across North America by exploring indications for exam performance, determining referral patterns, and assessing technical protocols and procedures...
May 2, 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29719307/magnetic-resonance-imaging-mri-and-transvaginal-ultrasonography-tvu-at-ovarian-pain-caused-by-benign-ovarian-lesions
#6
Amela Sofic, Azra Husic-Selimovic, Vahidin Katica, Elma Jahic, Una Delic, Adnan Sehic, Fuad Julardzija
Research goal: The aim of the research is to define the possibilities of TVU and the MRI in the diagnosis of the most common benign ovarian lesions which cause pelvic pain. Patients and methods: In study were included n=74 patients with pelvic pain, who were examined with TVU and then with an MRI of pelvis. Diagnostic results of all patients (n=74) divided into two groups according to the modality that was performed (TVU results n=74 and MRI results n=74 MRI ). We compared the results of TVU and MRI, and with a pathohistological finding after surgery...
2018: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/29706453/calyceal-diverticula-in-children-imaging-findings-and-presentations
#7
Y Ochoa Santiago, C Sangüesa Nebot, S Picó Aliaga, A Serrano Durbá, P Ortega López
A calyceal diverticulum consists of a cystic eventration in the renal parenchyma that is lined with transitional cell epithelium with a narrow infundibular connection with the calyces or pelvis of the renal collector system; thus, the term pyelocalyceal diverticulum would be more accurate. Very rare in pediatric patients, calyceal diverticula can be symptomatic and require treatment. Calyceal diverticula are underdiagnosed because they can be mistaken for simple renal cysts on ultrasonography. To determine the approach to their follow-up and management, the diagnosis must be confirmed by excretory-phase computed tomography (CT) or magnetic resonance imaging (MRI)...
April 26, 2018: Radiología
https://www.readbyqxmd.com/read/29685537/three-dimensional-magnetic-resonance-pelvimetry-a-new-technique-for-evaluating-the-female-pelvis-in-pregnancy
#8
K D Liao, Y H Yu, Y G Li, L Chen, C Peng, P Liu, C L Chen, R Y Chen, M Zhong, Y Wang
OBJECTIVE: To describe three-dimensional (3D) magnetic resonance imaging (MRI) pelvimetry methods and to establish the pelvimetric reference in a large population of Chinese females at term pregnancy. METHODS: Three-hundred one pregnant women at term who underwent MRI were included. Three-dimensional pelvic models were reconstructed using Mimics. 10.0 software based on MRI data sets, and measurements of these models were made. Pelvimetric results according to delivery modality were presented...
May 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29679498/7t-ultra-high-field-body-mr-imaging-with-an-8-channel-transmit-32-channel-receive-radiofrequency-coil-array
#9
Stefan H G Rietsch, Stephan Orzada, Stefan Maderwald, Sascha Brunheim, Bart W J Philips, Tom W J Scheenen, Mark E Ladd, Harald H Quick
PURPOSE: In this work a combined body coil array with 8 transmit/receive (Tx/Rx) meander elements and with 24 receive-only (Rx) loops (8Tx/32Rx) was developed and evaluated in comparison to an 8-channel transmit/receive body array (8Tx/Rx) based on meander elements serving as the reference standard. METHODS: Systematic evaluation of the RF array was performed on a body-sized phantom. Body imaging at 7T was performed in 6 volunteers in the body regions pelvis, abdomen, and heart...
April 21, 2018: Medical Physics
https://www.readbyqxmd.com/read/29663843/persistent-hematospermia-seminal-vesicle-bleed
#10
Yih Chyn Phan, Wasim Mahmalji
A 65-year-old gentleman, with no past medical problems and not on any anticoagulation was seen in the urology clinic with persistent hematospermia for the last few years. A thorough history and examination including a digital examination of the prostate was unremarkable. Bleeding from his female partner was also ruled out. Investigations such as prostate specific antigen (PSA) blood test, urine culture, semen culture, and flexible cystoscopy were performed, and these investigations were also within normal limits...
April 17, 2018: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/29657454/association-between-reduced-trunk-flexibility-in-children-and-lumbar-stress-fractures
#11
REVIEW
Masahiko Kemmochi, Shigeru Sasaki, Shoichi Ichimura
Background: We noticed that most of active sports children with low back pain (LBP) have muscle tightness around the pelvis and reduced trunk flexibility. Abnormalities in short-time inversion recovery (STIR) images on magnetic resonance imaging (MRI) can show stress fracture. Therefore, we investigated the associations among LBP, trunk flexibility, and lumbar stress fractures. Methods: A total of 130 patients under the age of 18 years complained of LBP were investigated in STIR MRI images...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29657142/age-and-sex-dependent-frequency-of-fat-metaplasia-and-other-structural-changes-of-the-sacroiliac-joints-in-patients-without-axial-spondyloarthritis-a-retrospective-cross-sectional-mri-study
#12
Katharina Ziegeler, Hamama Eshkal, Claudia Schorr, Joachim Sieper, Torsten Diekhoff, Marcus R Makowski, Bernd Hamm, Kay-Geert A Hermann
OBJECTIVE: To determine the prevalence of fat metaplasia and other structural lesions of the sacroiliac joints associated with axial spondyloarthritis in a nonrheumatological patient population. METHODS: Magnetic resonance imaging examinations that included the pelvis and were performed in patients without known rheumatological disease were used for this retrospective cross-sectional study. These images were evaluated for sacroiliac fat metaplasia, sclerosis, osteophytes, and joint space alterations such as erosions or ankylosis...
April 15, 2018: Journal of Rheumatology
https://www.readbyqxmd.com/read/29649850/-diagnostic-and-treatment-strategies-in-morel-lavallee-lesions-in-the-spinal-column-and-pelvis
#13
Christopher A Becker, Christian Kammerlander, Axel Greiner, Fabian Sommer, Christoph Linhart, Wolfgang Böcker, Bianka Rubenbauer, Simon Weidert
BACKGROUND: The Morel-Lavallée lesion is one of the concomitant soft tissue lesions of pelvic fractures. Its role in spine fractures and its treatment in combination with osteosynthesis of pelvic or spine fractures have not yet been determined. The aim of this study was to analyse the best diagnostic and treatment options of both spine and pelvic fractures combined with Morel-Lavallée lesions (MLL). METHODS: An analysis of the literature was performed via PubMed and Medline...
April 12, 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29627632/giant-sacral-schwannoma-treated-with-a-360-approach-a-rare-case-and-systematic-review-of-the-literature
#14
REVIEW
Ursalan Ahmed Khan, Ghiath Ismayl, Irfan Malik
Sacral schwannomas are very rare and typically have a benign nature. They occur in a permissive anatomical location leading to non-specific symptoms which can result in them going unnoticed before reaching a considerable size. We report a rare case of a giant sacral schwannoma (130x110x90mm) in a 38-year-old man originating from the S2 nerve root, encompassing the neural canal with sacral erosion and extension in to the pelvis. The patient presented with a history of abdominal pain associated with increased urinary frequency and a sensation of incomplete bladder emptying...
April 5, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29616298/intracranial-malignant-peripheral-nerve-sheath-tumor-variant-an-unusual-neurovascular-phenotype-sarcoma-case-invading-through-the-petrous-bone
#15
Oliver D Mrowczynski, Robert J Greiner, Malika Kapadia, Julie C Fanburg-Smith, Mark R Iantosca, Elias B Rizk
INTRODUCTION: Intracranial malignant peripheral nerve sheath tumor (MPNST) is exceedingly rare. Previously reported cases of intracranial MPNST have been associated with development within a prominent cranial nerve. METHODS: This is the first report of an MPNST with both nerve sheath and vascular phenotype that follows the neurovascular bundle, without arising in a major cranial nerve or in the setting of neurofibromatosis type 1 (NF1). RESULTS: The patient is a 14-year-old boy with a history of worsening headaches for the past several months, left-sided hearing loss, nausea, vomiting, and vertigo...
April 3, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29589145/anatomical-description-of-the-umbilical-arteries-and-impact-of-their-ligation-on-pelvic-and-perineal-vascular-supply-after-cystectomy-in-women
#16
E Chantalat, C Vaysse, M C Delchier, B Bordier, X Game, P Chaynes, E Cavaignac, M Roumiguié
OBJECTIVE: In radical cystectomy, the surgeon generally ligates the umbilical artery at its origin. This artery may give rise to several arteries that supply the sexual organs. Our aim was to evaluate pelvic and perineal devascularisation in women after total cystectomy. PATIENTS AND METHODS: We carried out a prospective anatomical and radiological study. We performed bilateral pelvic dissections of fresh adult female cadavers to identify the dividing branches of the umbilical artery...
March 27, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29572089/magnetic-resonance-imaging-is-often-misleading-when-used-as-an-adjunct-to-ultrasound-in-the-management-of-placenta-accreta-spectrum-disorders
#17
Brett D Einerson, Christina E Rodriguez, Anne M Kennedy, Paula J Woodward, Meghan A Donnelly, Robert M Silver
BACKGROUND: Magnetic resonance imaging is reported to have good sensitivity and specificity in the diagnosis of placenta accreta spectrum disorders, and is often used as an adjunct to ultrasound. But the additional utility of obtaining an MRI to assist in the clinical management of patients with placenta accreta spectrum disorders, above and beyond the information provided by ultrasound, is unknown. OBJECTIVE: We aimed to determine whether magnetic resonance imaging provides data that may inform clinical management by changing the sonographic diagnosis of placenta accreta spectrum disorders...
March 20, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29561460/spinal-dysraphism-and-dislocated-hip-beware-of-anomalous-sciatic-nerve-through-ilium-a-case-report
#18
Amanda T Whitaker, James Kasser, Young-Jo Kim
RATIONALE: The sciatic nerve runs a predictable course combining L4-S3 nerve roots through the true pelvis and under the greater sciatic notch. There are reports of bony protuberances from the sacrum and ilium in cases of spinal dysraphism; however advanced imaging, treatment, or outcomes are not described. There are no cases with associated fibular hemimelia in the current literature. PATIENT CONCERNS: This is a 4-year-old girl with tethered cord, acetabular dysplasia with hip subluxation, congenital short femur, anterior cruciate ligament (ACL) deficiency, and fibular hemimelia with her sciatic nerve coursing through the ilium...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29559764/pitfalls-of-diffusion-weighted-imaging-of-the-female-pelvis
#19
REVIEW
Ana Luisa Duarte, João Lopes Dias, Teresa Margarida Cunha
Diffusion-weighted imaging (DWI) is widely used in protocols for magnetic resonance imaging (MRI) of the female pelvis. It provides functional and structural information about biological tissues, without the use of ionizing radiation or intravenous administration of contrast medium. High signal intensity on DWI with simultaneous low signal intensity on apparent diffusion coefficient maps is usually associated with malignancy. However, that pattern can also be seen in many benign lesions, a fact that should be recognized by radiologists...
January 2018: Radiologia Brasileira
https://www.readbyqxmd.com/read/29558901/myxoid-liposarcoma-local-relapse-and-metastatic-pattern-in-43-patients
#20
Hans Roland Dürr, Jessica Rauh, Andrea Baur-Melnyk, Thomas Knösel, Lars Lindner, Falk Roeder, Volkmar Jansson, Alexander Klein
BACKGROUND: Liposarcomas are the second most common type of soft tissue sarcomas, 30-50% of these are of myxoid subtype. The aim of this retrospective study was to analyze the local control rate, the metastatic pattern and survival of patients in a consecutive single-institution series. METHODS: From 1983 to 2015, 43 patients with myxoid liposarcoma of the extremities and trunk wall underwent resections. The margin was defined as R0 (wide) or R1 (marginal). Patients were followed for evidence of local recurrence or distant metastasis...
March 20, 2018: BMC Cancer
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