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https://www.readbyqxmd.com/read/29353372/the-variable-position-of-the-inferior-alveolar-nerve-ian-in-the-mandibular-ramus-a-computed-tomography-ct-study
#1
Andrew Y E Yeh, Brian P Finn, Robert H B Jones, Alastair N Goss
INTRODUCTION: This study was designed to quantify the important anatomical landmarks and the path of the inferior alveolar nerve (IAN) within the human mandibular body and ramus, in particular with reference to the bilateral sagittal split osteotomy (BSSO). MATERIALS AND METHODS: Four hundred and eleven CT scans were studied, 299 of these were involved in determining the position of lingula; and 230 were involved in determining the course of IAN in the mandibular molar region, namely from the mesial of the mandibular first molar to the distal of the mandibular second molar; 118 were involved with both measurements...
January 20, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29353220/quantification-of-spheno-occipital-synchondrosis-fusion-in-a-contemporary-malaysian-population
#2
Salina Hisham, Ambika Flavel, Nurliza Abdullah, Mohamad Helmee Mohamad Noor, Daniel Franklin
Timing of fusion of the spheno-occipital synchondrosis (SOS) is correlated with age. Previous research, however, has demonstrated variation in the timing of closure among different global populations. The present study aims to quantify the timing of SOS fusion in Malaysian individuals as visualised in multi-detector computed tomography (CT) scans and to thereafter formulate age estimation models based on fusion status. Anonymised cranial CT scans of 336 males and 164 females, aged 5-25 years, were acquired from the National Institute of Forensic Medicine, Hospital Kuala Lumpur and Department of Diagnostic Imaging, Hospital Sultanah Aminah...
January 8, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29353104/galactosylated-iodine-based-small-molecule-i-v-ct-contrast-agent-for-bile-duct-imaging
#3
Yeonjin Jung, Hee Sook Hwang, Kun Na
Computed tomography (CT) with contrast plays an important role as a clinical diagnostic tool but still has a limited diagnostic range. In this work, we developed a novel injectable iodine-based small molecule CT contrast agent, even can be used for bile duct diagnostics. The bile duct diagnosable CT contrast agent (BDICA) is synthesized with 5-amino-2,4,6-triiodoisophthaloyl dichloride (ATIPC), tromethamine and lactobionic acid (LBA) for asialoglycoprotein receptor (ASGPR) targeted delivery via receptor-mediated endocytosis and transport to the bile canaliculi...
January 12, 2018: Biomaterials
https://www.readbyqxmd.com/read/29353046/gas-within-the-bladder
#4
Juan Carlos Cataño, Diego E Giraldo
We present a case of an 83-year-old woman with history of diabetes mellitus, which came to the emergency room with a hyperosmolar state and UTI symptoms, she was started on IV fluids and antibiotics, but the abdominal CT scan image showed gas within the bladder.
January 15, 2018: American Journal of Medicine
https://www.readbyqxmd.com/read/29352992/endobronchial-granular-tumor-excision-with-bronchial-resection-inclusive-of-second-carinoplasty
#5
Hironori Ishibashi, Shunichi Baba, Yasuhiro Nakashima, Chihiro Takasaki, Masashi Kobayashi, Kenichi Okubo
Bronchial granular cell tumor is a rare tumor. A 39-year-old non-smoker woman was admitted to our hospital with back pain. Chest CT and bronchoscopy scan revealed a 10mm endobronchial tumor arising from the membrane near the second carina. The tumor was excised inclusive of the right second carina containing the extraluminally invaded endobronchial mass and was diagnosed as a granular cell tumor. The postoperative course was uneventful and the patient was well without signs of recurrence for 3 year follow-up...
January 15, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29352372/improving-pet-quantification-of-small-animal-68ga-dota-labeled-pet-ct-studies-by-using-a-ct-based-positron-range-correction
#6
Jacobo Cal-Gonzalez, Juan José Vaquero, Joaquín L Herraiz, Mailyn Pérez-Liva, María Luisa Soto-Montenegro, Santiago Peña-Zalbidea, Manuel Desco, José Manuel Udías
PURPOSE: Image quality of positron emission tomography (PET) tracers that emits high-energy positrons, such as Ga-68, Rb-82, or I-124, is significantly affected by positron range (PR) effects. PR effects are especially important in small animal PET studies, since they can limit spatial resolution and quantitative accuracy of the images. Since generators accessibility has made Ga-68 tracers wide available, the aim of this study is to show how the quantitative results of [68Ga]DOTA-labeled PET/X-ray computed tomography (CT) imaging of neuroendocrine tumors in mice can be improved using positron range correction (PRC)...
January 19, 2018: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/29352333/long-term-results-of-custom-cementless-stem-total-hip-arthroplasty-performed-in-hip-fusion
#7
Xavier Flecher, Matthieu Ollivier, Pascal Maman, Sébastien Pesenti, Sébastien Parratte, Jean-Noël Argenson
INTRODUCTION: Due to complex anatomical considerations, results of cementless-stem total hip arthroplasty (THA) in hip fusion remain controversial compared with conventional THA. We therefore aimed to analyse 3D anatomy of the fused hip based on pre-operative computed tomography (CT) scans, functional outcomes based on the Harris Hip Score (HHS) and the Hip Disability and Osteoarthritis Outcome Score (HOOS), modifications of hip anatomy based on post-operative standardised radiography, and determine complication rate and long-term survival based on Kaplan-Meier analysis...
January 19, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29351787/scl20a2-mutation-presenting-with-acute-ischemic-stroke-a-case-report
#8
Xiaoyu Zhang, Gaoting Ma, Zhangning Zhao, Meijia Zhu
BACKGROUND: Primary familial brain calcification (PFBC) is a rare disorder characterized by distinctive bilateral brain calcification and variable clinical presentations. However, cerebrovascular attack was rarely reported in PFBC patients. We here reported a SLC20A2 mutation patient presenting with acute ischemic stroke. CASE PRESENTATION: A 56 years old man was transferred to our hospital because of 6 days of melena and 3 days of somnolence, agitation and mood changes...
January 19, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29351655/establishing-diagnostic-reference-levels-for-cardiac-computed-tomography-angiography-in-saudi-arabia
#9
Ali B Alhailiy, Peter L Kench, Mark F McEntee, Patrick C Brennan, Elaine A Ryan
Cardiac computed tomography angiography (CCTA) is a commonly used diagnostic imaging tool for cardiovascular disease. Despite constant improvements to imaging technologies, the radiation dose to patients remains a concern when using this procedure. Diagnostic reference levels (DRLs) are used as a trigger to identify and alert individual facilities that are using high doses during CT. This study aims to assess patient radiation dose and establish new national DRLs (NDRL) associated with CCTA in Saudi clinical practices...
January 17, 2018: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29351564/steatosis-in-south-african-women-how-much-and-why
#10
Nitien H Naran, Mark Haagensen, Nigel J Crowther
BACKGROUND: Globally, steatosis is the commonest type of liver pathology and is closely associated with obesity and the metabolic syndrome. Obesity is common in urban African females but no data is available on hepatic fat content in this population group when compared to other ethnic groups. The aim of this study was therefore to compare hepatic fat content in woman from different ethnic groups in South Africa and to characterise the principle determinants of liver fat. MATERIALS AND METHODS: A convenience sample of 106 (48 Indian, 29 African and 29 Caucasian) female volunteers aged 20-60 years and having no history of cardiometabolic disorders were recruited...
2018: PloS One
https://www.readbyqxmd.com/read/29351445/impact-of-hiv-infection-on-alpha-1-antitrypsin-in-the-lung
#11
Sarah E Stephenson, Carole L Wilson, Kristina Crothers, Engi F Attia, Cherry Wongtrakool, Irina Petrache, Lynn M Schnapp
BACKGROUND: Emphysema is one of the most common lung diseases in HIV+ individuals. The pathogenesis of HIV-associated emphysema remains unclear; however, radiographic distribution and earlier age of presentation of emphysema in the lungs of HIV+ patients are similar to deficiency of alpha-1 antitrypsin (A1AT), a key elastase inhibitor in the lung. Reduced levels of circulating A1AT have been detected in HIV+ patients, suggesting a potential mechanism for emphysema development. In the present study, we asked if A1AT levels and activity in the bronchoalveolar lavage fluid (BALF) differ in patients with and without HIV and emphysema...
December 14, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351123/accuracy-of-18f-naf-pet-ct-in-bone-metastasis-detection-and-its-effect-on-patient-management-in-patients-with-breast-carcinoma
#12
Wouter A M Broos, Friso M van der Zant, Maurits Wondergem, Remco J J Knol
OBJECTIVE: Determination of the accuracy of sodium fluorine-18-fluoride (F-NaF) PET/computed tomography (CT) for the evaluation of bone metastases, and the impact on patient management in breast cancer patients. PATIENTS AND METHODS: Patients with breast cancer, referred for F-NaF PET/CT between February 2014 and June 2016, were included in a database. Baseline characteristics, clinical indication, definitive diagnosis according to follow-up data, as well as changes in patient management were recorded...
January 18, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29350579/evaluation-of-respiratory-motion-corrected-cone-beam-ct-at-end-expiration-in-abdominal-radiotherapy-sites-a-prospective-study
#13
Russell E Kincaid, Agung E Hertanto, Yu-Chi Hu, Abraham J Wu, Karyn A Goodman, Hai D Pham, Ellen D Yorke, Qinghui Zhang, Qing Chen, Gig S Mageras
BACKGROUND: Cone beam computed tomography (CBCT) for radiotherapy image guidance suffers from respiratory motion artifacts. This limits soft tissue visualization and localization accuracy, particularly in abdominal sites. We report on a prospective study of respiratory motion-corrected (RMC)-CBCT to evaluate its efficacy in localizing abdominal organs and improving soft tissue visibility at end expiration. MATERIAL AND METHODS: In an IRB approved study, 11 patients with gastroesophageal junction (GEJ) cancer and five with pancreatic cancer underwent a respiration-correlated CT (4DCT), a respiration-gated CBCT (G-CBCT) near end expiration and a one-minute free-breathing CBCT scan on a single treatment day...
January 19, 2018: Acta Oncologica
https://www.readbyqxmd.com/read/29350403/influence-of-contrast-administration-on-computed-tomography-based-analysis-of-visceral-adipose-and-skeletal-muscle-tissue-in-clear-cell-renal-cell-carcinoma
#14
Michael T Paris, Helena F Furberg, Stacey Petruzella, Oguz Akin, Andreas M Hötker, Marina Mourtzakis
BACKGROUND: Computed tomography (CT) scans are being utilized to examine the influence of skeletal muscle and visceral adipose quantity and quality on health-related outcomes in clinical populations. However, little is known about the influence of contrast administration on these parameters. METHODS: Precontrast, arterial, and 3-minute postcontrast CT images of 45 patients with clear cell renal cell carcinoma were downloaded from The Cancer Imaging Archive and retrospectively analyzed for visceral adipose cross-sectional area (CSA) and density, and muscle CSA and density at the third lumbar vertebrae...
January 19, 2018: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29350330/role-of-dual-energy-ct-in-the-diagnosis-and-follow-up-of-gout-systematic-analysis-of-the-literature
#15
André Ramon, Amélie Bohm-Sigrand, Pierre Pottecher, Pascal Richette, Jean-Francis Maillefert, Herve Devilliers, Paul Ornetti
The aim of this systematic review was to determine the potential role of dual-energy CT in the diagnosis and follow-up of gout with regard to the Outcome Measures in Rheumatology (OMERACT) filter. A systematic analysis of the literature was conducted using the MEDLINE and Cochrane databases and published abstracts of international congresses, according to the criteria of the OMERACT filter: feasibility, reproducibility, validity versus laboratory (serum urate, MSU synovial fluid aspirate) and other imaging modalities for gout, and its sensitivity to change in patients on urate lowering therapy (ULT)...
January 19, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29350191/a-prospective-gating-method-to-acquire-a-diverse-set-of-free-breathing-ct-images-for-model-based-4dct
#16
Dylan O'Connell, Dan Ruan, David H Thomas, Tai H Dou, John H Lewis, Anand P Santhanam, Percy P Lee, Daniel A Low
Breathing motion modeling requires observation of tissues at sufficiently distinct respiratory states for proper 4D characterization. This work proposes a method to improve sampling of the breathing cycle with limited imaging dose. We designed and tested a prospective free-breathing acquisition protocol with a simulation using datasets from 5 patients imaged with a model-based 4DCT technique. Each dataset contained 25 free-breathing fast helical CT scans with simultaneous breathing surrogate measurements...
January 19, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29350116/-upper-abdominal-pain-after-an-elective-aortic-valve-replacement
#17
R M A van der Boon, M E Emans, S K Zoet
A 69-year-old man came to our emergency department with nausea, vomiting and upper abdominal pain under the suspicion of an ileus. Four weeks before he had had an elective aortic valve replacement. The basal thoracic slides of the abdominal CT-scan revealed a significant amount of pericardial effusion, after which the patient was referred for emergency cardiac surgery. Abdominal complaints are rarely the primary symptoms of severe heart failure.
2018: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29350048/triple-split-bolus-versus-single-bolus-ct-in-abdominal-trauma-patients-a-comparative-study
#18
Johannes Clemens Godt, Torsten Eken, Anselm Schulz, Cathrine K Johansen, Anette Aarsnes, Johann Baptist Dormagen
Background Split-bolus computed tomography (CT) is a recent development in trauma imaging. Instead of multiple scans in different contrast phases after a single contrast bolus, split-bolus protocols consist of one single scan of the thorax and abdomen after two or three contrast injections at different points of time. Purpose To evaluate and compare image quality and injury findings of a new triple-split-bolus CT (TS-CT) protocol of thorax and abdomen with those of a portal venous phase CT (PV-CT) in the same patient group...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29350011/-treatment-of-ossification-of-ligamentum-flavum-complicated-with-lumbar-spinal-stenosis
#19
Xu Lan, Jie Gao, Jian-Zhong Xu, Xue-Mei Liu
OBJECTIVE: To investigate the imaging characteristic and operation outcome of ossification of ligamentum flavum with lumbar spinal stenosis. METHODS: January 2013 to January 2016, 9 patients with ossification of ligamentum flavum with lumbar spinal stenosis were treated, included 5 males and 4 females, aged from 51 to 63 years old with an average of 57 years old. All patients complained intermittent claudication and radiating pain at lower limb. The pathologic change regions examined by CT or MRI were as follows:2 cases in L₄,₅ and L₅S₁, 5 in L̀,̀, and 2 in L₅S₁...
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29350006/-the-shor-term-clinical-outcomes-and-safety-of-extreme-lateral-interbody-fusion-combined-with-percutaneous-pedicle-screw-fixation-for-the-treatment-of-degenerative-lumbar-disease
#20
Xu-Dong Hu, Wei-Hu Ma, Wei-Yu Jiang, Chao-Yue Ruan, Yun-Lin Chen
OBJECTIVE: To evaluate the early efficacy and safety of extreme lateral interbody fusion (XLIF) combined with percutaneous pedicle screw fixation for lumbar degenerative disease. METHODS: From January 2013 to June 2014, 13 patients with degenerative lumbar disease were treated with XLIF combined with percutaneous pedicle screw fixation, including 8 cases of lumbar instability, 5 cases of mild to moderate lumbar spondylolisthesis;there were 5 males and 8 females, aged from 56 to 73 years with an average of 62...
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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