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https://www.readbyqxmd.com/read/28424822/rapid-non-contrast-magnetic-resonance-imaging-for-post-appendectomy-intra-abdominal-abscess-in-children
#1
Megan H Lee, Eric P Eutsler, Elizabeth F Sheybani, Geetika Khanna
BACKGROUND: Acute appendicitis, especially if perforated at presentation, is often complicated by postoperative abscess formation. The detection of a postoperative abscess relies primarily on imaging. This has traditionally been done with contrast-enhanced computed tomography. Non-contrast magnetic resonance imaging (MRI) has the potential to accurately detect intra-abdominal abscesses, especially with the use of diffusion-weighted imaging (DWI). OBJECTIVE: To evaluate our single-center experience with a rapid non-contrast MRI protocol evaluating post-appendectomy abscesses in children with persistent postsurgical symptoms...
April 20, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28417852/nuclear-medicine-in-pediatric-nephro-urology-an-overview
#2
REVIEW
Iosif Mendichovszky, Bernardita Troncoso Solar, Naima Smeulders, Marina Easty, Lorenzo Biassoni
In the context of ante-natally diagnosed hydronephrosis, the vast majority of children with a dilated renal pelvis do not need any surgical treatment, as the dilatation resolves spontaneously with time. Slow drainage demonstrated at Tc-99m-mercaptoacetyltriglycine (MAG3) renography does not necessarily mean obstruction. Obstruction is defined as resistance to urinary outflow with urinary stasis at the level of the pelvic-ureteric junction (PUJ) which, if left untreated, will damage the kidney. Unfortunately this definition is retrospective and not clinically helpful...
May 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28413557/c2-primary-leiomyoma-in-an-immunocompetent-woman-a-case-report-and-review-of-literature
#3
Mohana Rao Patibandla, Madhukar T Nayak, A K Purohit, Megha Uppin, Sundaram Challa, Gokul Chowdary Addagada, Manisha Nukavarapu
Clinical case report and review of the literature. This is the first case of primary leiomyoma in an immunocompetent woman without previous history of uterine leiomyoma being reported in the literature to the best of our knowledge. Leiomyoma, a type of smooth muscle cell tumor, involving the vertebra is extremely rare. There were very few primary leiomyoma in patients with AIDS or in the immune-suppressed patients. This 48-year-old female came with H/o neck pain, weakness and bladder retention. On examination, tone increased in all four limbs, power on the right side of the limbs 4/5, power on the left upper limb 0/5, lower limb 3/5, left plantar was up going, decreased sensation over the left second cervical vertebra (C2) dermatome and all modalities decreased below C2...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28409251/advanced-imaging-techniques-in-pediatric-body-mri
#4
REVIEW
Jesse Courtier, Anil G Rao, Sudha A Anupindi
While there are many challenges specific to pediatric abdomino-pelvic MRI, many recent advances are addressing these challenges. It is therefore essential for radiologists to be familiar with the latest advances in MR imaging. Laudable efforts have also recently been implemented in many centers to improve the overall experience of pediatric patients, including the use of dedicated radiology child life specialists, MRI video goggles, and improved MR suite environments. These efforts have allowed a larger number of children to be scanned while awake, with fewer studies being done under sedation or anesthesia; this has resulted in additional challenges from patient motion and difficulties with breath-holding and tolerating longer scan times...
May 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28390297/the-addition-of-whole-body-magnetic-resonance-imaging-to-body-computerised-tomography-alters-treatment-decisions-in-patients-with-metastatic-breast-cancer
#5
Michael Kosmin, Andreas Makris, Priya V Joshi, Mei-Lin Ah-See, David Woolf, Anwar R Padhani
AIM: Accurate evaluation of distribution of disease and response to systemic anti-cancer therapy (SACT) is important in the optimal management of metastatic breast cancer. Whole-body magnetic resonance imaging (WB-MRI) has increased accuracy over computerised tomography of the chest, abdomen and pelvis (CT-CAP) for detecting liver and bone disease, but its effect on patient management is largely unexplored. This study investigates the effects of using WB-MRI alongside CT-CAP on SACT decisions in standard clinical practice for patients with metastatic breast cancer...
April 5, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28382187/ultrasonographic-diagnosis-of-slipped-capital-femoral-epiphysis
#6
Manikandan Palaniappan, Venkatraman Indiran, Prabakaran Maduraimuthu
BACKGROUND: Slipped capital femoral epiphysis (SCFE), a fracture through the physis with resultant slip of the epiphysis, is the most common hip abnormality in adolescents and is a major cause of early osteoarthritis. Plain radiograph is the initial modality used to evaluate patients with painful hip joints. Ultrasonography and magnetic resonance imaging (MRI), which do not involve radiation exposure, have also been used. This case report supports the view that ultrasound can be used as an initial, cost-effective and radiation-free modality for the evaluation of suspected SCFE...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28358979/pelvimetry-for-fetal-cephalic-presentations-at-or-near-term-for-deciding-on-mode-of-delivery
#7
REVIEW
Robert C Pattinson, Anna Cuthbert, Valerie Vannevel
BACKGROUND: Pelvimetry assesses the size of a woman's pelvis aiming to predict whether she will be able to give birth vaginally or not. This can be done by clinical examination, or by conventional X-rays, computerised tomography (CT) scanning, or magnetic resonance imaging (MRI). OBJECTIVES: To assess the effects of pelvimetry (performed antenatally or intrapartum) on the method of birth, on perinatal mortality and morbidity, and on maternal morbidity. This review concentrates exclusively on women whose fetuses have a cephalic presentation...
March 30, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28357568/high-resolution-metal-artifact-reduction-mr-imaging-of-the-lumbosacral-plexus-in-patients-with-metallic-implants
#8
Shivani Ahlawat, Steven E Stern, Allan J Belzberg, Jan Fritz
OBJECTIVE: To assess the quality and accuracy of metal artifact reduction sequence (MARS) magnetic resonance imaging (MRI) for the diagnosis of lumbosacral neuropathies in patients with metallic implants in the pelvis. MATERIALS AND METHODS: Twenty-two subjects with lumbosacral neuropathy following pelvic instrumentation underwent 1.5-T MARS MRI including optimized axial intermediate-weighted and STIR turbo spin echo sequences extending from L5 to the ischial tuberosity...
March 30, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28349187/-primary-prostatic-sarcoma-a%C3%A2-rare-malignancy
#9
A Herlemann, D Horst, M D'Anastasi, A Kretschmer, C G Stief, C Gratzke
Primary prostatic sarcomas are rare, reportedly comprising less than 1% of all prostate malignancies. Most patients present with lower urinary tract symptoms due to bladder outlet obstruction. Prostate-specific antigen (PSA) is typically normal. Histological confirmation and staging by a computed tomography (CT) or magnetic resonance imaging (MRI) scan of the pelvis and abdomen are essential for diagnosis and treatment planning. The differential diagnosis includes sarcomatoid prostate cancer or benign spindle cell tumors...
March 27, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28306550/female-pelvic-synthetic-ct-generation-based-on-joint-intensity-and-shape-analysis
#10
Lianli Liu, Shruti Jolly, Yue Cao, Karen Vineberg, Jeffrey A Fessler, James M Balter
Using MRI for radiotherapy treatment planning and image guidance is appealing as it provides superior soft tissue information over CT scans and avoids possible systematic errors introduced by aligning MR to CT images. This study presents a method that generates Synthetic CT (MRCT) volumes by performing probabilistic tissue classification of voxels from MRI data using a single imaging sequence (T1 Dixon). The intensity overlap between different tissues on MR images, a major challenge for voxel-based MRCT generation methods, is addressed by adding bone shape information to an intensity-based classification scheme...
April 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28302242/vanishing-white-matter-vwm-disease-presenting-as-neuro-ovarian-failure
#11
Abidullah Khan, Mohammad Humayun, Maimoona Ayub, Iqbal Haider, Fahad Ajmal, Syed Saad Shah
A 19-year girl was admitted with a one-month history of worsening spastic paraparesis, cerbellar ataxia, visual decline and worsening headaches on a background of walking difficulty, progressive quadriparesis and migraine since the age of 10 years. She had no sensory loss, and cranial nerves examination was notable for optic atrophy with crescent formation only. She had primary amenorrhea and underdeveloped secondary sexual characteristics. Ultrasonograhic studies of the pelvis confirmed small ovaries, and uterus...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28301537/dedifferentiated-chondrosarcoma-radiological-features-prognostic-factors-and-survival-statistics-in-23-patients
#12
Chenglei Liu, Yan Xi, Mei Li, Qiong Jiao, Huizhen Zhang, Qingcheng Yang, Weiwu Yao
BACKGROUND: Dedifferentiated chondrosarcoma is a rare, highly malignant tumor with a poor survival. There are many confusing issues concerning the imaging feature that can facilitate early diagnosis and the factors that might be related to outcomes. METHODS: Twenty-three patients with dedifferentiated chondrosarcoma confirmed by pathology were retrospectively reviewed from 2008 to 2015. The patients' clinical information, images from radiographs (n = 17), CT (n = 19), and MRI (n = 17), histological features, treatment and prognosis were analyzed...
2017: PloS One
https://www.readbyqxmd.com/read/28290736/accuracy-and-reliability-of-marker-based-approaches-to-scale-the-pelvis-thigh-and-shank-segments-in-musculoskeletal-models
#13
Hans Kainz, Hoa Hoang, Chris Stockton, Roslyn R Boyd, David G Lloyd, Christopher P Carty
Gait analysis together with musculoskeletal modelling is widely used for research. In the absence of medical images, surface marker locations are used to scale a generic model to the individual's anthropometry. Studies evaluating the accuracy and reliability of different scaling approaches in a paediatric and/or clinical population have not yet been conducted and, therefore, formed the aim of this study. Magnetic resonance images (MRI) and motion capture data were collected from twelve participants with cerebral palsy and six typically developed participants...
March 14, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28274482/clinical-characteristics-of-patients-with-bone-sarcoidosis
#14
Ying Zhou, Elyse E Lower, Huiping Li, Yolanda Farhey, Robert P Baughman
OBJECTIVE: To assess the clinical features, diagnosis, and treatment of bone sarcoidosis in the United States. METHODS: Patients with bone sarcoidosis were identified and matched to sarcoidosis patients based on race, gender, and age. Detailed characteristics were obtained by medical record review. RESULTS: A total of 64 patients with bone sarcoidosis were enrolled in this study. The female:male ratio was 1.46:1 and the white:black ratio was 3:1...
February 10, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28263827/a-fast-method-for-the-quantification-of-fat-fraction-and-relaxation-times-comparison-of-five-sites-of-bone-marrow
#15
Caroline Le Ster, Jérémy Lasbleiz, Stephan Kannengiesser, Raphaël Guillin, Giulio Gambarota, Hervé Saint-Jalmes
PURPOSE: Bone marrow is found either as red bone marrow, which mainly contains haematopoietic cells, or yellow bone marrow, which mainly contains adipocytes. In adults, red bone marrow is principally located in the axial skeleton. A recent study has introduced a method to simultaneously estimate the fat fraction (FF), the T1 and T2* relaxation times of water (T1w, T2*w) and fat (T1f and T2*f) in the vertebral bone marrow. The aim of the current study was to measure FF, T1w, T1f, T2*w and T2*f in five sites of bone marrow, and to assess the presence of regional variations...
March 2, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28258300/pelvic-and-lower-extremity-physiological-cross-sectional-areas-an-mri-study-of-the-living-young-and-comparison-to-published-research-literature
#16
Juliane Lube, Natasha A M S Flack, Sebastian Cotofana, Orkun Özkurtul, Stephanie J Woodley, Stefan Zachow, Niels Hammer
PURPOSE: Morphological data pertaining to the pelvis and lower extremity muscles are increasingly being used in biomechanical modeling to compare healthy and pathological conditions. Very few data sets exist that encompass all of the muscles of the lower limb, allowing for comparisons between regions. The aims of this study were to (a) provide physiological cross-sectional area (PCSA) data for the pelvic, thigh, and leg muscles in young, healthy participants, using magnetic resonance imaging (MRI), and (b) to compare these data with summarized PCSAs obtained from the literature...
March 3, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28249339/dual-energy-ct-a-novel-technique-for-diagnostic-testing-of-fragility-fractures-of-the-pelvis
#17
Carsten Hackenbroch, Hans-Joachim Riesner, Patricia Lang, Fabian Stuby, Burkhardt Danz, Benedikt Friemert, Hans-Georg Palm
Background The incidence of fragility fractures of the pelvis is increasing. Established methods to diagnose this condition include X-rays, computed tomography (CT) and magnetic resonance imaging (MRI). Dual energy CT (DECT) is a modern technology for the imaging of bone oedema/bruises and has been used in injuries of the extremities and spine. It is unclear whether this technique can also be used in fragility fractures of the pelvis. The aim of this study was to perform a literature research and survey of the "AG Becken III" members of the German Society of Trauma Surgery (DGU) on the usefulness of DECT in fractures of the pelvis...
February 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28237184/soft-tissue-displacement-over-pelvic-anatomical-landmarks-during-3-d-hip-movements
#18
V Camomilla, T Bonci, A Cappozzo
The position, in a pelvis-embedded anatomical coordinate system, of skin points located over the following anatomical landmarks (AL) was determined while the hip assumed different spatial postures: right and left anterior superior and posterior superior iliac spines, and the sacrum. Postures were selected as occurring during walking and during a flexion-extension and circumduction movement, as used to determine the hip joint centre position (star-arc movement). Five volunteers, characterised by a wide range of body mass indices (22-37), were investigated...
January 17, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28216981/real-case-of-primitive-embryonal-duodenal-carcinoma-in-a-young-man
#19
Julien Barbieux, Riccardo Memeo, Vito De Blasi, Sebastian Suciu, Vanina Faucher, Gerlinde Averous, Catherine Roy, Jacques Marescaux, Didier Mutter, Patrick Pessaux
We report here the case of a young man suffering from a rare germ cell tumour. The patient was a 25-year-old man who was referred to our centre for asthenia, stinging epigastric pain, and an iron deficiency anaemia. Gastroscopy revealed a circumferential vegetating lesion on the second portion of the duodenum. The lesion was indurated at the third portion of the duodenum, responsible for a tight stenosis. A computerized tomography-scan of the chest, abdomen and pelvis, and a pancreatic MRI showed a circumferential lesion with a bi-ductal dilatation (i...
January 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28181381/changes-in-penile-length-after-radical-prostatectomy-investigation-of-the-underlying-anatomical-mechanism
#20
Yoshifumi Kadono, Kazuaki Machioka, Kazufumi Nakashima, Masashi Iijima, Kazuyoshi Shigehara, Takahiro Nohara, Kazutaka Narimoto, Kouji Izumi, Yasuhide Kitagawa, Hiroyuki Konaka, Toshifumi Gabata, Atsushi Mizokami
OBJECTIVE: To measure changes in penile length (PL) over time before and after radical prostatectomy (RP), and to investigate the underlying mechanisms for these changes. PATIENTS AND METHODS: The stretched PL (SPL) of 102 patients was measured before, 10 days after, and at 1, 3, 6, 9, 12, 18 and 24 months after RP. The perpendicular distance from the distal end of the membranous urethra to the midline of the pelvic outlet was measured on mid-sagittal magnetic resonance imaging (MRI) slice at three time points: preoperatively; 10 days after RP; and 12 months after RP...
February 8, 2017: BJU International
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