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Thoracic CT

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https://www.readbyqxmd.com/read/28718167/are-computer-numerical-control-cnc-manufactured-patient-specific-metal-templates-available-for-posterior-thoracic-pedicle-screw-insertion-feasibility-and-accuracy-evaluation
#1
Xiangxue Kong, Lei Tang, Qiang Ye, Wenhua Huang, Jianyi Li
PURPOSE: Accurate and safe posterior thoracic pedicle insertion (PTPI) remains a challenge. Patient-specific drill templates (PDTs) created by rapid prototyping (RP) can assist in posterior thoracic pedicle insertion, but pose biocompatibility risks. The aims of this study were to develop alternative PDTs with computer numerical control (CNC) and assess their feasibility and accuracy in assisting PTPI. METHODS: Preoperative CT images of 31 cadaveric thoracic vertebras were obtained and then the optimal pedicle screw trajectories were planned...
July 17, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28716688/influence-of-thoracic-fluid-compartments-on-pulmonary-congestion-in-chronic-heart-failure
#2
Steven C Chase, Bryan J Taylor, Troy J Cross, Kirsten E Coffman, Lyle J Olson, Bruce D Johnson
INTRODUCTION: Pulmonary congestion is a common finding of heart failure (HF), but it remains unclear how pulmonary and heart blood volumes (Vp and Vh) and extravascular lung water (EVLW) change in stable HF and impact lung function. METHODS: Fourteen patients with HF (age: 68±11 y; LVEF: 33±8%) and 12 controls (age: 65±9 y) were recruited. A pulmonary function test, thoracic CT scan, and contrast perfusion scan were performed. From the thoracic scan, a histogram of CT attenuation of lung tissue was generated and skew, kurtosis, and full-width half-max were calculated as surrogates of EVLW...
July 14, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28714265/can-malignant-and-inflammatory-pleural-effusions-in-dogs-be-distinguished-using-computed-tomography
#3
Thom C Watton, Ana Lara-Garcia, Christopher R Lamb
Computed tomography (CT) is the primary imaging modality used to investigate human patients with suspected malignant or inflammatory pleural effusion, but there is a lack of information about the clinical use of this test in dogs. To identify CT signs that could be used to distinguish pleural malignant neoplasia from pleuritis, a retrospective case-control study was done based on dogs that had pleural effusion, pre- and postcontrast thoracic CT images, and cytological or histopathological diagnosis of malignant or inflammatory pleural effusion...
July 16, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28712277/moderate-hypofractionated-image-guided-thoracic-radiotherapy-for-locally-advanced-node-positive-non-small-cell-lung-cancer-patients-with-very-limited-lung-function-a-case-report
#4
Farkhad Manapov, Olarn Roengvoraphoj, Minglun Li, Chukwuka Eze
Patients with locally advanced lung cancer and very limited pulmonary function (forced expiratory volume in 1 second [FEV1] ≤ 1 L) have dismal prognosis and undergo palliative treatment or best supportive care. We describe two cases of locally advanced node-positive non-small cell lung cancer (NSCLC) patients with very limited lung function treated with induction chemotherapy and moderate hypofractionated image-guided radiotherapy (Hypo-IGRT). Hypo-IGRT was delivered to a total dose of 45 Gy to the primary tumor and involved lymph nodes...
June 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/28706353/a-dosimetric-study-on-slab-pinewood-slab-phantom-for-developing-the-heterogeneous-chest-phantom-mimicking-actual-human-chest
#5
Om Prakash Gurjar, Radha Kishan Paliwal, Surendra Prasad Mishra
The aim is to study the density, isodose depths, and doses at different points in slab-pinewood-slab (SPS) phantom, solid phantom SP34 (made up of polystyrene), and chest level of actual patient for developing heterogeneous chest phantom mimicking thoracic region of human body. A 6 MV photon beam of field size of 10 cm × 10 cm was directed perpendicular to the surface of computed tomography (CT) images of chest level of patient, SPS phantom, and SP34 phantom. Dose was calculated using anisotropic analytical algorithm...
April 2017: Journal of Medical Physics
https://www.readbyqxmd.com/read/28705124/the-accuracy-and-safety-of-fluoroscopic-guided-percutaneous-pedicle-screws-in-the-thoracic-and-lumbosacral-spine-in-the-asian-population-a-ct-scan-analysis-of-1002-screws
#6
Chee Kidd Chiu, Chris Yin Wei Chan, Mun Keong Kwan
PURPOSE: This study investigates the safety and accuracy of percutaneous pedicle screws placed using fluoroscopic guidance in the thoracolumbosacral spine among Asian patients. METHODS: Computerized tomography scans of 128 patients who had surgery using fluoroscopic-guided percutaneous pedicle screws were selected. Medial, lateral, superior, and inferior screw perforations were classified into grade 0 (no violation), grade 1 (<2 mm perforation), grade 2 (2-4 mm perforation), and grade 3(>4 mm perforation)...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28703104/high-pitch-dual-source-ct-angiography-without-ecg-gating-for-imaging-the-whole-aorta-intraindividual-comparison-with-standard-pitch-single-source-technique-without-ecg-gating
#7
Carmelinda Manna, Mario Silva, Rocco Cobelli, Sara Poggesi, Cristina Rossi, Nicola Sverzellati
PURPOSE: We aimed to perform intraindividual comparison of computed tomography (CT) parameters, image quality, and radiation exposure between standard CT angiography (CTA) and high-pitch dual source (DS)-CTA, in subjects undergoing serial CTA of thoracoabdominal aorta. METHODS: Eighteen subjects with thoracoabdominal CTA by standard technique and high-pitch DS-CTA technique within 6 months of each other were retrieved for intraindividual comparison of image quality in thoracic and abdominal aorta...
July 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28702181/the-major-thoracic-vascular-invasion-of-lung-cancer
#8
Soichi Oka, Shuichi Shinohara, Taiji Kuwata, Masaru Takenaka, Yasuhiro Chikaishi, Ayako Hirai, Yoshinobu Ichiki, Shohei Shimajiri, Takatoshi Aoki, Fumihiro Tanaka
BACKGROUND: We actually investigated the surgical and pathological findings in cases which tumor invasion of the major thoracic vessels was suspected based on the preoperative Computed tomography (CT) findings. MATERIALS AND METHODS: We retrospectively reviewed our prospective database of all patients, who underwent lung resection for lung cancer from 2012 to 2014. 387 patients underwent lung cancer surgery. Among these patients, we analyzed 30 patients in whom pulmonary artery (PA) invasion was suspected and 11 patients in whom pulmonary vein (PV) or left atrium (LA) invasion was suspected based on the preoperative CT findings...
August 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28698425/-marked-aneurysmal-expansion-caused-by-type-ii-endoleaks-eight-years-after-thoracic-endovascular-aortic-repair-report-of-a-case
#9
Hirofumi Midorikawa, Gaku Takinami, Rie Kageyama, Kyouhei Ueno, Megumu Kanno, Masaaki Watanabe
We report a case of marked aneurysmal expansion by type II endoleaks 8 years after thoracic endovascular aortic repair. The preoperative chest computed tomography (CT) demonstrated the descending thoracic aorta of 95 mm with type II endoleak. We performed suture closure of 3 endoleaks and partial aneurysmorrhaphy via left thoracotomy under partial cardiopulmonary bypass. The postoperative CT showed no endoleak with shrinkage of the aneurysm. The patient was discharged on the 21th postoperative day uneventfully...
July 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28693309/variation-of-canine-vertebral-bone-architecture-in-computed-tomography
#10
Byunggyu Cheon, Seungjo Park, Sang-Kwon Lee, Jun-Gyu Park, Kyoung-Oh Cho, Jihye Choi
Focal vertebral bone density changes were assessed in vertebral CT images from the clinically healthy dogs, without diseases that affect bone density. The number, location, and density of the lesion were determined. A total of 429 vertebral CT images from 20 dogs were reviewed, and 99 focal vertebral changes were identified in 14 dogs. Focal vertebral bone density changes were mainly found in thoracic vertebra (29.5%) as hyperattenuating (86.9%) lesions. All focal vertebral changes were observed at the vertebral body, except for a single hyperattenuating change in one thoracic transverse process...
July 10, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/28693056/-the-clinical-characteristics-of-pulmonary-benign-metastasizing-leiomyoma
#11
H P Wang, J H Shi, L Zhang
Objective: Pulmonary benign metastasizing leiomyoma (PBML) is a rare entity that leiomyoma of uterus metastasized to the lung. The clinical characteristics of this rare disease were analyzed in this article. Methods: The detailed clinical records of 7 patients diagnosed as PBML at Peking Union Medical College Hospital between January 2001 and June 2015 were reviewed. Results: All patients were women with median age of 44 years (range 28-62). Symptoms included dyspnea (2/7), chest pain (1/7), cyanosis (1/7), cough (1/7) and bloody sputum (1/7), while 4/7 cases were asymptomatic...
July 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28690286/a-case-of-recurrent-pneumothorax-associated-with-birt-hogg-dub%C3%A3-syndrome-treated-with-bilateral-simultaneous-surgery-and-total-pleural-covering
#12
Kyoshiro Takegahara, Naoyuki Yoshino, Jitsuo Usuda
Birt-Hogg-Dubé syndrome is an autosomal dominant genetic disorder characterized by a triad of skin tumors, renal tumors, and multiple pulmonary cysts. Our patient was a 40-year-old man with a history of recurrent bilateral pneumothorax and a family history of pneumothorax. The patient visited our department with chest pain and was diagnosed with left pneumothorax based on a chest X-ray. Thoracic computed tomography (CT) showed multiple cysts in both lungs. We performed thoracoscopic bilateral bullectomy with curative intent...
July 10, 2017: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28688028/novel-assessment-of-interstitial-lung-disease-using-the-computer-aided-lung-informatics-for-pathology-evaluation-and-rating-caliper-software-system-in-idiopathic-inflammatory-myopathies
#13
Patompong Ungprasert, Katelynn M Wilton, Floranne C Ernste, Sanjay Kalra, Cynthia S Crowson, Srinivasan Rajagopalan, Brian J Bartholmai
PURPOSE: To evaluate the correlation between measurements from quantitative thoracic high-resolution CT (HRCT) analysis with "Computer-Aided Lung Informatics for Pathology Evaluation and Rating" (CALIPER) software and measurements from pulmonary function tests (PFTs) in patients with idiopathic inflammatory myopathies (IIM)-associated interstitial lung disease (ILD). METHODS: A cohort of patients with IIM-associated ILD seen at Mayo Clinic was identified from medical record review...
July 7, 2017: Lung
https://www.readbyqxmd.com/read/28687910/ct-findings-associated-with-survival-in-chronic-hypersensitivity-pneumonitis
#14
Jonathan H Chung, Steven M Montner, Ayodeji Adegunsoye, Justin M Oldham, Aliya N Husain, Rekha Vij, Imre Noth, Mary E Strek
OBJECTIVES: To identify CT findings in chronic hypersensitivity pneumonitis (cHP) associated with survival. MATERIAL AND METHODS: Two thoracic radiologists assessed CT scans for specific imaging findings and patterns in 132 subjects with cHP. Survival analyses were performed. RESULTS: The majority of subjects had an inconsistent with usual interstitial pneumonitis pattern on CT (55.3%,73/132). Hypersensitivity pneumonitis (HP) diagnosis on CT was less common in those with fibrosis (66...
July 7, 2017: European Radiology
https://www.readbyqxmd.com/read/28683909/type-b-aortic-dissections-current-guidelines-for-treatment
#15
REVIEW
Daniel B Alfson, Sung W Ham
Stanford type B aortic dissections (TBADs) involve the descending aorta and can present with complications, including malperfusion syndrome or aortic rupture, which are associated with significant morbidity and mortality if left untreated. Clinical diagnosis is straightforward, typically confirmed using CT angiography. Treatment begins with immediate anti-impulse medical therapy. Acute TBAD with complications should be repaired with emergent thoracic endovascular aortic repair (TEVAR). Uncomplicated TBAD with high-risk features should undergo TEVAR in the subacute phase...
August 2017: Cardiology Clinics
https://www.readbyqxmd.com/read/28683724/first-report-of-cavitary-pneumonia-due-to-community-acquired-acinetobacter-pittii-study-of-virulence-and-overview-of-pathogenesis-and-treatment
#16
Romaric Larcher, Alix Pantel, Erik Arnaud, Albert Sotto, Jean-Philippe Lavigne
BACKGROUND: Acinetobacter pittii is a nosocomial pathogen rarely involved in community-acquired infections. We report for the first time that A. pittii can be responsible for cavitary community-acquired pneumonia and study its virulence, and discuss its pathogenesis and treatment options. CASE PRESENTATION: A 45-year-old woman with a history of smoking and systemic lupus was admitted to Nimes University Hospital (France) with coughing and sputum lasting for three weeks...
July 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28681340/fdg-pet-ct-findings-of-extra-thoracic-sarcoid-are-associated-with-cardiac-sarcoid-a-rationale-for-using-fgd-pet-ct-for-cardiac-sarcoid-evaluation
#17
Darshan C Patel, Senthil S Gunasekaran, Christopher Goettl, Nadera J Sweiss, Yang Lu
PURPOSE: This retrospective study investigates the relationship between cardiac and extra-thoracic sarcoid findings on FDG PET-CT using a 72-hour pretest high-fat, high-protein, and very low-carbohydrate (HFHPVLC) diet. PATIENTS AND METHODS: A total of 196 consecutive FDG PET-CT scans with 72-hour HFHPVLC diet preparation were performed between December 2014 and December 2015 in known sarcoid patients. Of these scans, 5 were excluded for non-adherence to diet preparation or underlying cancer...
July 5, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28680607/spinal-epidural-hematoma-following-a-thoracic-epidural-in-a-child-with-sickle-cell-disease
#18
Madhankumar Sathyamoorthy, Benjamin Walker, Melissa M Rhodes, Ike Eriator
Acute liver dysfunction in the perioperative period may increase the risk of epidural hematoma in a patient with a neuraxial catheter. Coagulation testing needs to be carefully monitored in these patients. An epidural hematoma should be ruled out urgently by CT or MRI in cases of a persistent motor block.
July 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28680006/vertebral-fracture-at-the-caudal-end-of-a-surgical-fusion-for-thoracic-vertebral-fracture-in-a-patient-with-diffuse-idiopathic-skeletal-hyperostosis-dish
#19
Hiroshi Kobayashi, Koji Otani, Kazuyuki Watanabe, Kinshi Kato, Takuya Nikaido, Shoji Yabuki, Shin-Ichi Kikuchi, Shin-Ichi Konno
The patient was an 86-year-old woman with back pain after a fall. She had no neurological findings at the initial visit. Plain radiographs and magnetic resonance imaging (MRI) showed diffuse idiopathic skeletal hyperostosis (DISH) and a Th10 fracture. Two weeks later, she started gait exercise with immobilization by a rigid orthosis. Twenty-five days later, she presented with paralysis and numbness of her legs. Computed tomography (CT) showed anterior expansion in the vertebral body of Th10. MRI showed an intramedullary high-intensity area on T2-weighted images at the same level...
July 5, 2017: Fukushima Journal of Medical Science
https://www.readbyqxmd.com/read/28678745/thoracic-radiation-induced-pleural-effusion-and-risk-factors-in-patients-with-lung-cancer
#20
Jing Zhao, Regina M Day, Jian-Yue Jin, Leslie Quint, Hadyn Williams, Catherine Ferguson, Li Yan, Maurice King, Ahmad Albsheer, Martha Matuszak, Feng-Ming Spring Kong
The risk factors and potential practice implications of radiation-induced pleural effusion (RIPE) are undefined. This study examined lung cancer patients treated with thoracic radiation therapy (TRT) having follow-up computed tomography (CT) or 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT. Increased volumes of pleural effusion after TRT without evidence of tumor progression was considered RIPE. Parameters of lung dose-volume histogram including percent volumes irradiated with 5-55 Gy (V5-V55) and mean lung dose (MLD) were analyzed by receiver operating characteristic analysis...
June 29, 2017: Oncotarget
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