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Repeat head CT scan

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https://www.readbyqxmd.com/read/28927353/recurrent-metastatic-medullary-thyroid-carcinoma-a-case-of-sustained-response-to-prolonged-treatment-with-somatostatin-analogues
#1
Juana María Cano, Rocío Galán, Rafael López
BACKGROUND: Medullary thyroid carcinoma (MTC) is a rare disease. Treatment options for recurrent disease are limited. Somatostatin analogues might have a role as anticancer agents agents in MTC, although the evidence is inconclusive. PATIENT FINDINGS: A 64-year old male was diagnosed with MTC in January 2010. Total thyroidectomy with neck dissection (stage IVA, pT2pN1bM0, R1) was performed, followed by adjuvant locoregional radiotherapy. Two years later, the patient developed recurrent metastatic disease evidenced by elevated carcinoembryonic antigen (CEA) and calcitonin levels, and a positive uptake (Octreoscan®) in the right adrenal gland and pancreatic head...
September 19, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28902876/postoperative-lead-migration-in-deep-brain-stimulation-surgery-incidence-risk-factors-and-clinical-impact
#2
Takashi Morishita, Justin D Hilliard, Michael S Okun, Dan Neal, Kelsey A Nestor, David Peace, Alden A Hozouri, Mark R Davidson, Francis J Bova, Justin M Sporrer, Genko Oyama, Kelly D Foote
INTRODUCTION: Deep brain stimulation (DBS) is an effective treatment for multiple movement disorders and shows substantial promise for the treatment of some neuropsychiatric and other disorders of brain neurocircuitry. Optimal neuroanatomical lead position is a critical determinant of clinical outcomes in DBS surgery. Lead migration, defined as an unintended post-operative displacement of the DBS lead, has been previously reported. Despite several reports, however, there have been no systematic investigations of this issue...
2017: PloS One
https://www.readbyqxmd.com/read/28852638/repetition-of-examination-due-to-motion-artifacts-in-horizontal-cone-beam-ct-comparison-among-three-different-kinds-of-head-support
#3
Cosimo Nardi, Gian Giacomo Taliani, Alessandro Castellani, Luisa De Falco, Valeria Selvi, Linda Calistri
AIMS AND OBJECTIVES: The aim of this study was to evaluate the repetition rate of examination due to motion artifacts in horizontal cone beam computed tomography, using three different kinds of head support, with reference to the patient's age. Further purpose was to evaluate how comfortable head supports were. MATERIALS AND METHODS: Seven hundred and fifty patients underwent a maxillofacial/dental arches volumetric imaging scan. They were divided into three groups depending on the head support used: foam headrest, foam headrest with head strap, and head restraint helmet...
July 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28741720/alteplase-for-acute-ischemic-stroke-after-heparin-reversal-with-protamine-a-case-report-and-review
#4
Gabriel V Fontaine, Shawn M Smith
BACKGROUND: Few patients presenting with acute ischemic stroke (AIS) are eligible for alteplase, especially those receiving ongoing anticoagulation. We describe the first reported case of a patient receiving full-dose intravenous (IV) alteplase for AIS after heparin reversal with protamine. CASE: A 73-year-old male presented with AIS. He was treated with IV heparin, tirofiban, loading-dose prasugrel, and aspirin prior to percutaneous coronary intervention (PCI) for placement of a right coronary artery stent...
July 25, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28649478/cerebral-air-embolism-as-possible-cause-of-stroke-during-therapeutic-endobronchial-application-of-argon-plasma-coagulation
#5
Venkatkiran Kanchustambham, Manasa Reddy, Swetha Saladi, Setu Patolia
A 68-year-old male was admitted for evaluation of an endobronchial mass obstructing the right middle lobe (RML) and right lower lobe (RLL) of the lung. Flexible bronchoscopy revealed a notable endobronchial lesion in the bronchus intermedius that completely obstructed the RML and the RLL. Argon plasma coagulation (APC) at 30 watts and gas flow at 0.8 liters/minute to 1 liter/minute were applied to the tumor. In the recovery room, the patient was discovered to have a left-sided facial droop and left-sided weakness...
May 17, 2017: Curēus
https://www.readbyqxmd.com/read/28624870/translatory-hip-kinematics-measured-with-optoelectronic-surgical-navigation
#6
Sima Zakani, John F Rudan, Randy E Ellis
PURPOSE: An optoelectronic surgical navigation system was used to detect small but measurable translational motion of human hip cadavers in high-range passive motions. Kinematic data were also examined to demonstrate the role of soft tissues in constraining hip translation. METHODS: Twelve cadaver hips were scanned using CT, instrumented for navigation, and passively taken through motion assessment. Center of the femoral head was tracked in the acetabular coordinates...
August 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28590940/simdosect-dose-reporting-software-based-on-monte-carlo-simulation-for-a-320-detector-row-cone-beam-ct-scanner-and-icrp-computational-adult-phantoms
#7
Maria Cros, Raoul Joemai, Jacob Koos Geleijns, Diego Molina, Marçal Salvadó
This study aims to develop and test software for assessing and reporting doses for standard patients undergoing computed tomography (CT) examinations in a 320 detector-row cone-beam scanner. The software, called SimDoseCT, is based on Monte Carlo (MC) simulation code, which was developed to calculate organ- and effective doses in ICRP anthropomorphic adult reference computational phantoms for acquisitions with the Aquilion ONE CT scanner (Toshiba). MC simulation was validated by comparing CTDI measurements within standard CT dose phantoms with results from simulation under the same conditions...
June 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28541855/rate-and-reasons-for-repeat-ct-scanning-in-transferred-trauma-patients
#8
James F Holmes, Blake G Siglock, Michael T Corwin, Michael A Johnson, Edgardo S Salcedo, Gabriel S Espinoza, Ramit Lamba
To describe the reasons and additional radiation for CT scans repeated after transfer to a trauma center. Retrospective study of patients transferred to a trauma center. Patients had repeat CT if a CT of the same region was repeated at the trauma center's emergency department. Indications for repeat CT scanning were abstracted. Radiation dosage was calculated in millisieverts. A total of 370 had CT scans and were transferred. Mean age was 39.1 ± 28.0 years. Seventy-four [20.0%, 95% confidence interval (CI) 16...
May 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28502689/complicated-mild-traumatic-brain-injury-and-the-need-for-imaging-surveillance
#9
Martina Stippler, Jingyi Liu, Rouzbeh Motiei-Langroudi, Zoya Voronovich, Howard Yonas, Roger B Davis
OBJECTIVE: To evaluate the need for repeat head computed tomography (CT) in patients with complicated mild traumatic brain injury (TBI) determined nonoperative after the first head CT. METHODS: A total of 380 patients with mild TBI and a positive head CT not needing surgery were included. Changes between first and second head CT were categorized as decreased, increased, or stable. RESULTS: Three patients required neurosurgical intervention (0...
September 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28444799/pixel-wise-estimation-of-noise-statistics-on-iterative-ct-reconstruction-from-a-single-scan
#10
Tonghe Wang, Lei Zhu
PURPOSE: As iterative CT reconstruction continues to advance, the spatial distribution of noise standard deviation (STD) and accurate noise power spectrum (NPS) on the reconstructed CT images become important for method evaluation as well as optimization of algorithm parameters. Using a single CT scan, we propose a practical method for pixel-wise calculation of noise statistics on an iteratively reconstructed CT image, which enables accurate calculation of noise STD for each pixel and NPS...
April 26, 2017: Medical Physics
https://www.readbyqxmd.com/read/28439613/the-role-of-delayed-head-ct-in-evaluation-of-elderly-blunt-head-trauma-victims-taking-antithrombotic-therapy
#11
D Scantling, C Fischer, R Gruner, A Teichman, B McCracken, J Eakins
INTRODUCTION: Increasing active longevity has created an increasing surge of elderly trauma patients. The majority of these patients suffer blunt trauma and many are taking antithrombotic agents. The literature is mixed regarding the utility of routine repeat head CT in patients taking antithrombotic medications with a GCS of 15 and initial negative head CT. We hypothesized that scheduled delayed CT head 12 h after admission (D-CTH) in elderly blunt trauma victims would not identify clinically significant new hemorrhages or change management...
April 24, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28409733/endovascular-management-of-acute-epidural-hematomas-clinical-experience-with-80-cases
#12
Carlos Michel A Peres, Jose Guilherme M P Caldas, Paulo Puglia, Almir F de Andrade, Igor A F da Silva, Manoel J Teixeira, Eberval G Figueiredo
OBJECTIVE Small acute epidural hematomas (EDHs) treated conservatively carry a nonmeasurable risk of late enlargement due to middle meningeal artery (MMA) lesions. Patients with EDHs need to stay hospitalized for several days, with neurological supervision and repeated CT scans. In this study, the authors analyzed the safety and efficacy of the embolization of the involved MMA and associated lesions. METHODS The study group consisted of 80 consecutive patients harboring small- to medium-sized EDHs treated by MMA embolization between January 2010 and December 2014...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28367391/igg4-related-disease-presenting-as-a-pancreatic-mass-and-bilateral-lacrimal-gland-swelling
#13
Uroosa Ibrahim, Amina Saqib, Nikhil Nalluri, Muhammad R Raza, Mark Goldstein
IgG4-related disease is characterized by multi-system inflammation and possible elevation in serum immunoglobulin-G4 level. Treatment regimens include glucocorticoids, disease-modifying anti-rheumatic agents and recently, rituximab infusions have been reported to be effective in treatment-refractory disease. We present a case of a 64-year-old male presenting with acute abdominal pain and scleral icterus. An abdominal ultrasound demonstrated extensive biliary ductal dilatation. A computed tomography (CT) scan and a magnetic resonance cholangiopancreatography (MRCP) revealed a 4...
February 24, 2017: Curēus
https://www.readbyqxmd.com/read/28340174/application-of-virtual-navigation-with-multimodality-image-fusion-in-foramen-ovale-cannulation
#14
Xixiong Qiu, Weizong Liu, Mingdong Zhang, Hengzhou Lin, Shoujun Zhou, Yi Lei, Jun Xia
Objective. : Idiopathic trigeminal neuralgia (ITN) can be effectively treated with radiofrequency thermocoagulation. However, this procedure requires cannulation of the foramen ovale, and conventional cannulation methods are associated with high failure rates. Multimodality imaging can improve the accuracy of cannulation because each imaging method can compensate for the drawbacks of the other. We aim to determine the feasibility and accuracy of percutaneous foramen ovale cannulation under the guidance of virtual navigation with multimodality image fusion in a self-designed anatomical model of human cadaveric heads...
March 6, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28331537/combined-totally-mini-invasive-approach-in-necrotizing-pancreatitis-a-case-report-and-systematic-literature-review
#15
REVIEW
Luca Sorrentino, Osvaldo Chiara, Massimiliano Mutignani, Fabrizio Sammartano, Paolo Brioschi, Stefania Cimbanassi
BACKGROUND: Currently, both the step-up approach, combining percutaneous drainage (PD) and video-assisted retroperitoneal debridement (VARD), and endoscopic transgastric necrosectomy (ETN) are mini-invasive techniques for infected necrosis in severe acute pancreatitis. A combination of these approaches could maximize the management of necrotizing pancreatitis, conjugating the benefits from both the experiences. However, reporting of this combined strategy is anecdotal. This is the first reported case of severe necrotizing pancreatitis complicated by biliary fistula treated by a combination of ETN, PD, VARD, and endoscopic biliary stenting...
2017: World Journal of Emergency Surgery: WJES
https://www.readbyqxmd.com/read/28286280/overdrainage-secondary-to-ventriculosinus-shunt
#16
Tianyuan Zhao, Wei Ouyang, Shaobing Wang, Peitao Wu
BACKGROUND: Shunting to the cranial venous sinus represents a novel treatment strategy for hydrocephalus. To our knowledge, overdrainage as a complication after shunting to the cranial venous sinus has not previously been reported in the clinical literature. Here we report the case of a 50-year-old man who suffered from overdrainage after a ventriculosinus shunt insertion. CASE DESCRIPTION: A 50-year-old man was admitted to our hospital with recurring fever and gait difficulty 4 months after a ventriculoperitoneal shunt (VPS) insertion for primary communicating hydrocephalus...
June 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28248802/repeat-head-imaging-in-blunt-pediatric-trauma-patients-is-it-necessary
#17
E Patricia Hill, P J Stiles, Jared Reyes, R Joseph Nold, Stephen D Helmer, James M Haan
BACKGROUND: Children with confirmed brain injury usually undergo follow-up computed tomography (CT) scan of the head within 24 hours of admission. To date, no evidence exists to validate the diagnostic or therapeutic value of these repeat CTs. The purpose of this study was to (1) evaluate progression of traumatic brain injuries, (2) determine if routine repeat imaging changes management, and (3) compare the efficacy of recognizing worsening hemorrhage with serial neurological examination versus repeat imaging...
May 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28180123/repetitive-traumatic-brain-injury-in-patients-from-kashan-iran
#18
Esmaeil Fakharian, Mahdi Mohammadzadeh, Shirin Behdadmehr, Hamid Reza Sabri, Azadeh Sadat Mirzadeh, Javad Mohammadzadeh
BACKGROUND: Traumatic brain injury (TBI) is a worldwide problem, especially in countries with high incidence of road traffic accidents such as Iran. Patients with a single occurrence of TBI have been shown to be at increased risk to sustain future TBI. OBJECTIVES: The aim of this study was to present the incidence and characteristics of repeated TBI (RTBI) in Iranian patients. PATIENTS AND METHODS: During one year, all admitted TBI patients with prior TBI history were enrolled into the study...
September 2016: Trauma Monthly
https://www.readbyqxmd.com/read/28074785/deformable-registration-of-ct-and-cone-beam-ct-with-local-intensity-matching
#19
Seyoun Park, William Plishker, Harry Quon, John Wong, Raj Shekhar, Junghoon Lee
Cone-beam CT (CBCT) is a widely used intra-operative imaging modality in image-guided radiotherapy and surgery. A short scan followed by a filtered-backprojection is typically used for CBCT reconstruction. While data on the mid-plane (plane of source-detector rotation) is complete, off-mid-planes undergo different information deficiency and the computed reconstructions are approximate. This causes different reconstruction artifacts at off-mid-planes depending on slice locations, and therefore impedes accurate registration between CT and CBCT...
February 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28048096/su-f-j-205-effect-of-cone-beam-factor-on-cone-beam-ct-number-accuracy
#20
W Yao, C Hua, J Farr, S Brady, T Merchant
PURPOSE: To examine the suitability of a Catphan™ 700 phantom for image quality QA of a cone beam computed tomography (CBCT) system deployed for proton therapy. METHODS: Catphan phantoms, particularly Catphan™ 504, are commonly used in image quality QA for CBCT. As a newer product, Catphan™ 700 offers more tissue equivalent inserts which may be useful for generating the electron density - CT number curve for CBCT based treatment planning. The sensitometry-and-geometry module used in Catphan™ 700 is located at the end of the phantom and after the resolution line pair module...
June 2016: Medical Physics
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