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Computerised tomography

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https://www.readbyqxmd.com/read/29153075/is-whole-colon-investigation-by-colonoscopy-computerised-tomography-colonography-or-barium-enema-necessary-for-all-patients-with-colorectal-cancer-symptoms-and-for-which-patients-would-flexible-sigmoidoscopy-suffice-a-retrospective-cohort-study
#1
Wendy Atkin, Kate Wooldrage, Urvi Shah, Kate Skinner, Jeremy P Brown, Willie Hamilton, Ines Kralj-Hans, Michael R Thompson, Karen G Flashman, Steve Halligan, Siwan Thomas-Gibson, Margaret Vance, Amanda J Cross
BACKGROUND: For patients referred to hospital with suspected colorectal cancer (CRC), it is current standard clinical practice to conduct an examination of the whole colon and rectum. However, studies have shown that an examination of the distal colorectum using flexible sigmoidoscopy (FS) can be a safe and clinically effective investigation for some patients. These findings require validation in a multicentre study. OBJECTIVES: To investigate the links between patient symptoms at presentation and CRC risk by subsite, and to provide evidence of whether or not FS is an effective alternative to whole-colon investigation (WCI) in patients whose symptoms do not suggest proximal or obstructive disease...
November 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/29150083/ct-imaging-features-of-symptomatic-and-asymptomatic-floating-aortic-thrombus
#2
E Klang, A Kerpel, S Soffer, M Zlotnik, O Shimon, U Rimon, E Konen, M M Amitai
AIM: To present the computed tomography (CT) imaging features of floating aortic thrombus with emphasis on clinical and radiographic predictors for systemic shower emboli. MATERIALS AND METHODS: A retrospective computerised search for patients with protruding thoracic aortic thrombus on CT was conducted. Clinical and demographic characteristics were retrieved from medical files. Patients were divided into two groups: symptomatic and asymptomatic, based on the presence or absence of documented systemic emboli at the time of diagnosis or during follow-up...
November 14, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/29123567/neurological-effects-of-fat-embolism-syndrome-a-case-report
#3
Emma Shacklock, Andrew Gemmell, Nigel Hollister
Fat embolism syndrome is a serious multi-system pathology which classically affects the respiratory system, neurological system and causes a petechial rash. We present the case of a 20-year-old farmer who developed fat embolism syndrome following a traumatic femoral fracture. Features developed within 24 h of injury and necessitated a prolonged stay in Intensive Care. He exhibited significant signs of cerebral fat embolism syndrome including coma and seizures but went on to make full functional recovery. Magnetic resonance imaging is the recommended imaging modality for patients with suspected cerebral fat embolism...
November 2017: J Intensive Care Soc
https://www.readbyqxmd.com/read/29115984/body-mass-index-and-thoracic-subcutaneous-adipose-tissue-depth-possible-implications-for-adequacy-of-chest-compressions
#4
Paul Secombe, Ross Sutherland, Richard Johnson
OBJECTIVE: Adequacy of cardiopulmonary resuscitation relies on compression of the thoracic cage to produce changes in intra-thoracic pressures sufficient to generate a pressure gradient. In order to evaluate the efficacy of cardiopulmonary resuscitation in morbid obesity, it is first necessary to determine the depth of thoracic subcutaneous adipose tissue (SAT) and to correlate this with body mass index (BMI). RESULTS: Computerised-tomography images of the thorax of 55 patients with a diagnosis of obesity or morbid obesity (mean BMI 45...
November 7, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29099841/arytenoid-cartilage-movements-are-hypokinetic-in-parkinson-s-disease-a-quantitative-dynamic-computerised-tomographic-study
#5
Laura Perju-Dumbrava, Ken Lau, Debbie Phyland, Vicki Papanikolaou, Paul Finlay, Richard Beare, Philip Bardin, Stephen Stuckey, Peter Kempster, Dominic Thyagarajan
BACKGROUND: Voice change is one of the earliest features of Parkinson's disease. However, quantitative studies of vocal fold dynamics which are needed to provide insight into disease biology, aid diagnosis, or track progression, are few. METHODS: We therefore quantified arytenoid cartilage movements and glottic area during repeated phonation in 15 patients with Parkinson's disease (symptom duration < 6 years) and 19 controls, with 320-slice computerised tomography (CT)...
2017: PloS One
https://www.readbyqxmd.com/read/29062752/technical-pitfalls-and-tips-for-the-valve-in-valve-procedure
#6
REVIEW
Vinayak Bapat
Transcatheter aortic valve implantation (TAVI) has emerged as a viable treatment modality for patients with severe aortic valve stenosis and multiple co-morbidities. More recent indications include the use of transcatheter heart valves (THV) to treat degenerated bioprosthetic surgical heart valves (SHV), which are failing due to stenosis or regurgitation. Valve-in-valve (VIV) procedures in the aortic position have been performed with a variety of THV devices, although the balloon-expandable SAPIEN valve platform (Edwards Lifesciences Ltd, Irvine, CA, USA) and self-expandable CoreValve platform (Medtronic Inc...
September 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29033293/ct-and-mri-slice-separation-evaluation-by-labview-developed-software
#7
Giuseppe Acri, Barbara Testagrossa, Angela Sestito, Lilla Bonanno, Giuseppe Vermiglio
The efficient use of Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) equipment necessitates establishing adequate quality-control (QC) procedures. In particular, the accuracy of slice separation, during multislices acquisition, requires scan exploration of phantoms containing test objects. To simplify such procedures, a novel phantom and a computerised LabView-based procedure have been devised, enabling determination the midpoint of full width at half maximum (FWHM) in real time while the distance from the profile midpoint of two progressive images is evaluated and measured...
October 13, 2017: Zeitschrift Für Medizinische Physik
https://www.readbyqxmd.com/read/28974603/lesson-of-the-month-2-autoimmune-sequelae-of-anti-gad-antibodies-thinking-outside-the-box
#8
Rebecca J Ward, George I Varughese, Biju Jose, Roby J Abraham
A 52 year-old female with no significant medical problems presented with left-sided weakness, unsteady gait and speech disturbance. It was thought that she had neuro-inflammation and she remained clinically stable. Several years later, she was diagnosed with latent autoimmune diabetes of adulthood. Her neurological symptoms deteriorated and she was admitted into hospital. The cerebrospinal fluid was normal, as were an array of blood tests. Imaging tests, including magnetic resonance imaging, computerised tomography and positron emission tomography scans were normal...
October 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28974602/lesson-of-the-month-1-spontaneous-septic-thrombophlebitis-presenting-with-bacteraemia-diagnosed-by-pet-ct-scan
#9
Patrick Harnett, Shaifali Jain
Spontaneous septic thrombophlebitis is a rare complication of Staphylococcus aureus bacteraemia. Its true incidence is unknown as septic thrombus is not often considered as a source in the typical 'screen' of tests used to find the source of a bacteraemia.Positron emission tomography computerised tomography (PET-CT) is becoming increasingly available to physicians, is highly sensitive and yields specific anatomical information regarding abnormal metabolically active sites in infection, inflammation and neoplasia...
October 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28974596/new-horizons-in-multimodality-molecular-imaging-and-novel-radiotracers
#10
Sally Barrington, Philip Blower, Gary Cook
Positron emission tomography (PET)/computerised tomography is now established in clinical practice for oncologic and non-oncological applications. Improvement and development of scanner hardware has allowed faster acquisitions and wider application. PET/magnetic resonance imaging offers potential improvements in diagnostic accuracy and patient acceptability but clinical applications are still being developed. A range of new radiotracers and non-radioactive contrast agents is likely to lead to a growth in hybrid molecular imaging applications that will allow better characterisation of disease processes...
October 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28934953/increased-prevalence-of-renal-cysts-in-patients-with-sickle-cell-disease
#11
Daveena Meeks, Arunraj Navaratnarajah, Emma Drasar, Ounali Jaffer, C Jason Wilkins, Swee Lay Thein, Claire C Sharpe
BACKGROUND: Early detection and interventions have enabled patients with sickle cell disease (SCD) to live well into adulthood. Consequently, the chronicity of SCD allows for the insidious manifestation of multisystem complications, including renal damage. Cystic renal lesions are commonly incidentally discovered on ultrasound and computerised tomography (CT) imaging of the abdomen. Most are benign simple cysts, however, difficulties may be encountered if infection, rupture, haemorrhage or cancerous changes develop...
September 21, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28891021/anteromedial-cortical-support-reduction-in-unstable-pertrochanteric-fractures-a-comparison-of-intra-operative-fluoroscopy-and-post-operative-three-dimensional-computerised-tomography-reconstruction
#12
Shi-Min Chang, Ying-Qi Zhang, Shou-Chao Du, Zhuo Ma, Sun-Jun Hu, Xi-Zhou Yao, Wen-Feng Xiong
PURPOSE: Anteromedial cortical support reduction is favourable for secondary stability after limited sliding in unstable pertrochanteric fractures. The aim of this study was to compare the accuracy and agreement between intra-operative fluoroscopy and post-operative 3D reconstruction. MATERIALS AND METHODS: A retrospective analysis of 28 patients (mean 81.6 years) treated with short cephalomedullary nails was performed. All patients had full sets of intra-operative fluoroscopy and post-operative 3D CT images...
September 10, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28876670/foley-catheter-balloon-tamponade-fcbt-for-penetrating-neck-injuries-pni-at-groote-schuur-hospital-an-update
#13
M F Scriba, P H Navsaria, A J Nicol, S Edu, A Al-Sayari
BACKGROUND: A previous study from Groote Schuur Hospital (GSH) highlighted the success of FCBT (PNI). METHOD: The records of all patients with PNI requiring FCBT for a neck injury presenting to GSH within an 11-month study period were reviewed. Prospectively captured data on the Electronic Trauma Health Record Application (eTHRApp), was retrospectively analysed. Analysed data included demographics, clinical signs on admission, imaging, management and major outcomes...
June 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28856438/3d-printing-the-pterygopalatine-fossa-a-negative-space-model-of-a-complex-structure
#14
Ross Bannon, Shivani Parihar, Yiannis Skarparis, Ourania Varsou, Enis Cezayirli
PURPOSE: The pterygopalatine fossa is one of the most complex anatomical regions to understand. It is poorly visualized in cadaveric dissection and most textbooks rely on schematic depictions. We describe our approach to creating a low-cost, 3D model of the pterygopalatine fossa, including its associated canals and foramina, using an affordable "desktop" 3D printer. METHODS: We used open source software to create a volume render of the pterygopalatine fossa from axial slices of a head computerised tomography scan...
August 30, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28826641/radiographer-screening-for-incidental-pulmonary-emboli-on-routine-contrast-enhanced-computerised-tomography-scans-at-a-cancer-centre
#15
A Kilburn, S I Iddles, B M Carrington
AIM: To introduce and assess effectiveness of a radiographer-led screening programme for the detection of unsuspected pulmonary emboli on routine contrast-enhanced computed tomography (CT), and to evaluate radiographer response to this extended role. MATERIALS AND METHODS: A training programme was devised for all radiographic staff working in CT. The screening service was introduced and monthly quality assurance performed with cumulative analysis of the first 2 years...
August 18, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28782747/laparoscopic-surgery-for-solitary-insulinoma-in-the-absence-of-ious
#16
Abhay Narendra Dalvi, Mahadeo Namdeo Garale, Yogesh Prabhakar Takalkar, Sameer Ashok Rege, Pinky Manoharlal Thapar, Lila Anurag, Nalini Samir Shah
BACKGROUND: Insulinomas are the most common pancreatic neuroendocrine neoplasms. In spite of adequate pre-operative localisation, conventional surgical methods rely on intraoperative palpation. Intraoperative ultrasonography (IOUS) is said to aid in accurate localisation, decreases morbidity. Laparoscopic removal of pancreatic endocrine neoplasms is beneficial due to magnification and minimal invasion; however, in the absence of IOUS, error of judgement may lead to conversion to open surgery, thereby relying on 'palpation method' to localise the tumour...
August 1, 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/28765420/lesson-of-the-month-1-large-vessel-vasculitis-a-diagnostic-challenge-and-the-role-of-18-fluorodeoxyglucose-positron-emission-tomography
#17
Andrew Allard, Ramesh Mootoo
Large vessel vasculitis can pose a significant diagnostic challenge. It may be insidious in onset with the only presenting symptoms consisting of constitutional compromise. It may mimic other pathologies and the only serological abnormalities may be abnormal inflammatory markers. Conventional imaging modalities may not be diagnostic. We present a case of large vessel vasculitis that proved a significant diagnostic challenge with diagnosis established on 18F-fluorodeoxyglucose positron emission tomography (18F-FDG PET) computerised tomography (CT) imaging...
July 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28741653/a-randomised-controlled-trial-of-oral-chloral-hydrate-vs-intranasal-dexmedetomidine-before-computerised-tomography-in-children
#18
V M Yuen, B L Li, D K Cheuk, M K M Leung, T W C Hui, I C Wong, W W Lam, S W Choi, M G Irwin
Chloral hydrate is commonly used to sedate children for painless procedures. Children may recover more quickly after sedation with dexmedetomidine, which has a shorter half-life. We randomly allocated 196 children to chloral hydrate syrup 50 mg.kg(-1) and intranasal saline spray, or placebo syrup and intranasal dexmedetomidine spray 3 μg.kg(-1) , 30 min before computerised tomography studies. More children resisted or cried after drinking chloral hydrate syrup than placebo syrup, 72 of 107 (67%) vs. 42 of 87 (48%), p = 0...
July 25, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28642109/neoaortic-xenoprosthetic-grafts-for-treatment-of-mycotic-aneurysms-and-infected-aortic-grafts
#19
Chukwudubem Anibueze, Visesh Sankaran, Umar Sadat, Kelvin Tan, Yvonne G Wilson, Robert E Brightwell, Michael S Delbridge, Philip W Stather
BACKGROUND: There is no international consensus regarding the optimum management of infected aortae (mycotic aneurysms, infected aortic grafts). Neoaortoiliac reconstruction has advantages over extra-anatomical bypass grafting; however, the use of autologous vein is associated with venous hypertension and compartment syndrome, alternatively cadaveric homografts are associated with high rates of perianastomotic hemorrhage, limb occlusion, and pseudoaneurysm. Arterial repair using xenoprosthetic patches is associated with lower infection rates compared to the use of prosthetic material...
June 20, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28641703/a-randomised-controlled-trial-to-assess-the-cost-effectiveness-of-intensive-versus-no-scheduled-follow-up-in-patients-who-have-undergone-resection-for-colorectal-cancer-with-curative-intent
#20
David Mant, Alastair Gray, Siân Pugh, Helen Campbell, Stephen George, Alice Fuller, Bethany Shinkins, Andrea Corkhill, Jane Mellor, Elizabeth Dixon, Louisa Little, Rafael Perera-Salazar, John Primrose
BACKGROUND: Intensive follow-up after surgery for colorectal cancer is common practice but lacks a firm evidence base. OBJECTIVE: To assess whether or not augmenting symptomatic follow-up in primary care with two intensive methods of follow-up [monitoring of blood carcinoembryonic antigen (CEA) levels and scheduled imaging] is effective and cost-effective in detecting the recurrence of colorectal cancer treatable surgically with curative intent. DESIGN: Randomised controlled open-label trial...
May 2017: Health Technology Assessment: HTA
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