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Thoracic radiology

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https://www.readbyqxmd.com/read/28819817/estimation-of-entrance-surface-air-kerma-due-to-diagnostic-x-ray-examinations-of-adult-patients-in-uttarakhand-india-and-establishment-of-local-diagnostic-reference-levels
#1
Satish C Uniyal, Vineet Chaturvedi, Sunil D Sharma, Shailendra Raghuvanshi
It is well established that diagnostic X-ray practices must be optimised to keep patient radiation dose as low as compatible with providing the diagnostic information required. For effective optimisation of diagnostic exposures, the International Commission on Radiological Protection (ICRP) introduced the concept of diagnostic reference levels (DRLs) in 1996. The present study aimed to carry out an extensive dose survey of diagnostic radiography installations in the Uttarakhand region of India to establish local DRL Values for the different diagnostic practices...
August 17, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28816947/kinematic-analysis-of-the-relationship-between-modic-changes-and-sagittal-balance-parameters-in-the-cervical-spine
#2
Zikun Ma, Peng Liu, Jingpei Liu, Jianhui Mou, Zhaolin Wang, Dong Sun, Jie Cheng, Dengwei Zhang, Jianlin Xiao
The aim of this study is to investigate the relationship between the Modic changes (MCs) and sagittal parameters of the cervical spine.We conducted a retrospective review of 100 outpatients with magnetic resonance imaging (MRI) scans of the cervical spine (50 male and 50 female). MRI parameters were measured, including neck tilt, T1 slope (T1 ), thoracic inlet angle (TIA), and cervical lordosis (CL: Cobb C2-7). Patients were divided into 4 groups according to the presence or absence of MC and T1s, respectively: MC(+) and MC(-) groups, as well as H-T1s (T1s ≥25°) and L-T1s subgroups (T1s <25°)...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28812114/-thoracic-and-abdominal-imaging-in-immunocompromised-patients
#3
REVIEW
J R Kroeger, D Maintz, D-H Chang
The number of patients with immunosuppression is rising worldwide. The spectrum of diseases and pathogens in these patients differs widely from that of immunocompetent patients due to frequent opportunistic infections. Symptoms are sometimes unspecific, and imaging plays a key role in the management of these patients. The lungs are a frequent site of infection in immunosuppressed patients. Chest X‑ray is the starting point for radiological diagnostics, but shows only limited sensitivity and specificity for infections with atypical pathogens...
August 15, 2017: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/28802696/community-acquired-pneumonia-visualized-on-computed-tomography-but-not-chest-x-ray-pathogens-severity-and-clinical-outcomes
#4
Cameron P Upchurch, Carlos G Grijalva, Richard G Wunderink, Derek J Williams, Grant W Waterer, Evan J Anderson, Yuwei Zhu, Eric M Hart, Frank Carroll, Anna M Bramley, Seema Jain, Kathryn M Edwards, Wesley H Self
BACKGROUND: The clinical significance of pneumonia visualized on computed tomography (CT) in the setting of a normal chest x-ray (CXR) is uncertain. METHODS: In a multicenter prospective surveillance study of adults hospitalized with community-acquired pneumonia (CAP), we compared the presenting clinical features, pathogens, and outcomes of patients with pneumonia visualized on CT but not on concurrent CXR (CT-only pneumonia) and those with pneumonia visualized on CXR...
August 9, 2017: Chest
https://www.readbyqxmd.com/read/28795268/management-of-a-high-thoracic-chance-fracture
#5
Anouar Bourghli, Ibrahim Obeid, Louis Boissiere, Jean-Marc Vital, Zafer Tabboush, Mohammed Al Sarawan
PURPOSE: Chance fracture of the high thoracic spine is rare, and its impact on the adjacent cervical spine can be important. METHODS: We present the case of a 16-year-old male, who fell down from a 2 m height, in an unknown context as he has a mental retardation, and no witness saw the accident. Initial CT scan revealed a comminuted depressed fracture of the right parietal bone, associated with a chance fracture at the level of T3 with a kyphosis and bilateral lung contusion...
August 9, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28768503/comparison-of-low-density-and-high-density-pedicle-screw-instrumentation-in-lenke-1-adolescent-idiopathic-scoliosis
#6
Mingkui Shen, Honghui Jiang, Ming Luo, Wengang Wang, Ning Li, Lulu Wang, Lei Xia
BACKGROUND: The correlation between implant density and deformity correction has not yet led to a precise conclusion in adolescent idiopathic scoliosis (AIS). The aim of this study was to evaluate the effects of low density (LD) and high density (HD) pedicle screw instrumentation in terms of the clinical, radiological and Scoliosis Research Society (SRS)-22 outcomes in Lenke 1 AIS. METHODS: We retrospectively reviewed 62 consecutive Lenke 1 AIS patients who underwent posterior spinal arthrodesis using all-pedicle screw instrumentation with a minimum follow-up of 24 months...
August 2, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28768086/relationship-between-clinical-and-radiologic-findings-of-spinal-cord-injury-in-decompression-sickness
#7
Jae Myun Chung, Jin Young Ahn
BACKGROUND: Decompression sickness may involve the central nervous system. The most common site is spinal cord. This study was conducted to determine the relationship between magnetic resonance(MR) imaging findings of spinal damage. METHODS: We conducted a retrospective review of 12 patients (male=10, female=2) who presented with spinal cord symptoms. We investigated their clinical features, neurological findings and radiologic findings. RESULTS: The depth and bottom time of the dive were 34...
January 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28767630/predictive-findings-of-the-presence-of-stooping-in-patients-with-lumbar-degenerative-kyphosis-by-upright-whole-spine-lateral-radiography
#8
Seung Min Son, Jong Ki Shin, Tae Sik Goh, Kuen Tak Suh, Jung Sub Lee
STUDY DESIGN: Retrospective study. OBJECTIVE: To identify the relationships between radiological findings and the presence of stooping in lumbar degenerative kyphosis (LDK). SUMMARY OF BACKGROUND DATA: Many studies have addressed fixed sagittal imbalances and surgical treatments. However, information regarding the relationship between radiological findings and stooping in LDK is sparse. METHODS: The study included 73 patients with LDK and 44 with normal lumbar lordosis...
August 1, 2017: Spine
https://www.readbyqxmd.com/read/28765242/pulmonary-involvement-in-antineutrophil-cytoplasmic-antibodies-anca-associated-vasculitis-the-influence-of-anca-subtype
#9
Aladdin J Mohammad, Kristian H Mortensen, Judith Babar, Rona Smith, Rachel B Jones, Daiki Nakagomi, Pasupathy Sivasothy, David R W Jayne
OBJECTIVE: To describe pulmonary involvement at time of diagnosis in antineutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV), as defined by computed tomography (CT). METHODS: Patients with thoracic CT performed on or after the onset of AAV (n = 140; 75 women; granulomatosis with polyangiitis, n = 79; microscopic polyangiitis MPA, n = 61) followed at a tertiary referral center vasculitis clinic were studied. Radiological patterns of pulmonary involvement were evaluated from the CT studies using a predefined protocol, and compared to proteinase 3 (PR3)-ANCA and myeloperoxidase (MPO)-ANCA specificity...
August 1, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28760654/surgical-outcome-of-thoracic-myelopathy-caused-by-ossification-of-ligamentum-flavum
#10
Hua Wang, Fuxin Wei, Houqing Long, Guowei Han, Shilabant Sen Sribastav, Zemin Li, Yangliang Huang, Ronglan Zhu, Chunxiang Liang
Ossification of the ligamentum flavum (OLF) may result in thoracic myelopathy (TM) because of the spinal canal narrowing. The aim of this study was to investigate clinical outcomes of symptomatic thoracic OLF treated using posterior decompressive laminectomy. We made a retrospective review of patients who underwent posterior decompressive laminectomy from 2007 through 2016 for symptomatic TM caused by OLF. Thirty-three patients who had surgery for TM caused by OLF that was diagnosed based on clinical, radiologic, and pathologic evaluations...
July 28, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28758180/surgical-strategies-for-thoracic-myelopathy-due-to-ossification-of-ligamentum-flavum-a-technical-note-based-on-radiological-type
#11
Ting Wang, Chunyan DU, Xiujun Zheng, Yuanliang Sun, Xiangyun Liu, Jianqiang Kou
AIM: Ossification of the ligamentumflavum (OLF) is a primary cause of thoracic myelopathy. A relatively safe surgical technique based on radiological type is described for the OLF-induced thoracic myelopathy. MATERIAL AND METHODS: Forty patients with thoracic myelopathy caused by OLF were studied retrospectively. The OLF was divided into fused and non-fused types according to the CT and MRI findings. All patients underwent posterior decompression. For the fused type, open-door laminectomy and for the non-fused type, French-door laminectomy surgical techniques were adopted...
June 20, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28753252/utility-and-reproducibility-of-3-dimensional-printed-models-in-pre-operative-planning-of-complex-thoracic-tumors
#12
Elizabeth George, Maria Barile, Anji Tang, Ory Wiesel, Antonio Coppolino, Andreas Giannopoulos, Steven Mentzer, Michael Jaklitsch, Andetta Hunsaker, Dimitrios Mitsouras
BACKGROUND AND OBJECTIVES: 3D-printed models are increasingly used for surgical planning. We assessed the utility, accuracy, and reproducibility of 3D printing to assist visualization of complex thoracic tumors for surgical planning. METHODS: Models were created from pre-operative images for three patients using a standard radiology 3D workstation. Operating surgeons assessed model utility using the Gillespie scale (1 = inferior to 4 = superior), and accuracy compared to intraoperative findings...
September 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28751241/flexibility-assessment-of-the-unfused-thoracic-segments-above-the-potential-upper-instrumented-vertebra-using-the-supine-side-bending-radiographs-in-lenke-5-and-6-curves-for-adolescent-idiopathic-scoliosis-patients
#13
Mun Keong Kwan, Chee Kidd Chiu, Teik Seng Chan, Siti Mariam Abd Gani, Tan Shurn Heng, Chris Yin Wei Chan
BACKGROUND CONTEXT: Selection of UIV for Lenke 5 and 6 curves remains debatable, and several authors had described different selection strategies. OBJECTIVE: This study analyzed the flexibility of the unfused thoracic segments above the 'potential upper instrumented vertebrae (UIV)' (T1 to T12) and its compensatory ability in Lenke 5 and 6 curves using supine side bending (SSB) radiographs. STUDY DESIGN: Retrospective study PATIENT SAMPLE: 100 patients OUTCOME MEASURES: The ability of the unfused thoracic segments above the 'potential upper instrumented vertebrae (UIV)' i...
July 24, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28747159/a-case-report-of-ct-diagnosed-renal-infarct-secondary-to-syphilitic-aortitis
#14
Maaike Spaltenstein, Françoise Humbert, Diem-Lan Vu, Ilker Uçkay, Gregor John
BACKGROUND: Even though reported cases of syphilis have been increasing, cases of tertiary syphilis remain extremely rare. The majority of our knowledge with regard to complications of syphilis such as aortitis was acquired before the advent of relatively modern technologies such as CT, MRI and PET. This case report presents a rare case of syphilitic aortitis associated with a renal infarct caused by a peripheral arterial embolism diagnosed by CT. CASE PRESENTATION: We present a young man with sudden abdominal pain and flank tenderness without fever...
July 26, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28741723/analysis-of-the-incidence-and-factors-predictive-of-outcome-in-patients-with-head-and-neck-cancer-with-pulmonary-nodules
#15
Richard Green, Mark T Macmillan, Theofano Tikka, Lorna Bruce, John T Murchison, Iain J Nixon
BACKGROUND: The management of pulmonary nodules is challenging; unfortunately, little is known about the incidence and significance of pulmonary nodules in patients with head and neck cancer. METHODS: A review was conducted of 400 consecutive patients with head and neck cancer. Imaging was reviewed to identify the incidence of nodules and patient, tumor, and radiological factors associated with the risk of malignancy. RESULTS: Nodules were found in 58% of patients, with a malignant rate of 6%...
July 25, 2017: Head & Neck
https://www.readbyqxmd.com/read/28740431/what-we-know-about-surgical-therapy-in-early-stage-non-small-cell-lung-cancer-a-guide-for-the-medical-oncologist
#16
REVIEW
Sassine Ghanem, Sandy El Bitar, Sami Hossri, Chanudi Weerasinghe, Jean Paul Atallah
Lung cancer remains the leading cause of death in cancer patients. The gold standard for the treatment of early-stage non-small-cell lung cancer is lobectomy with mediastinal lymph-node dissection or systematic lymph-node sampling. The evidence behind this recommendation is based on the sole randomized controlled trial conducted to date, done by the Lung Cancer Study Group and published in 1995, which found a superiority for lobectomy over sublobar resection with regard to local recurrence rate and improved survival...
2017: Cancer Management and Research
https://www.readbyqxmd.com/read/28737193/-vertebral-fractures-in-children-with-type-i-osteogenesis-imperfecta
#17
Andrea M Sepúlveda, Claudia V Terrazas, Josefina Sáez, María L Reyes
Osteogenesis imperfecta (OI) is an hereditary disease affecting conective tissue, mainly associated to growth retardation and pathological fractures. OI type I (OI type I), is the mildest, most often, and homogeneous in its fenotype. Vertebral fractures are the most significant complications, associated to skeletical and cardiopulmonary morbidity. OBJECTIVES: To characterize clinically a cohort of children with OI type I. PATIENTS AND METHODS: A cohort of OI type I children younger than 20 year old was evaluated...
June 2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28727717/percutaneous-vertebroplasty-for-primary-non-hodgkin-s-lymphoma-of-the-thoracic-spine-case-report-and-review-of-the-literature
#18
Pu Jia, JinJun Li, Hao Chen, Li Bao, Fei Feng, Hai Tang
Primary non-Hodgkin's lymphoma of the vertebra is rare in the spine of the elderly. The clinical presentation and radiological features are unspecific, which make it more difficult for diagnosis. We report a case of a 79-year-old woman complaining of serious backache without any injury. The magnetic resonance imaging (MRI) showed invasion of the fifth thoracic vertebra with the posterior vertebral body wall defect. There was a high suspicion that the patient had a metastatic tumor of the vertebra. A percutaneous vertebroplasty was performed under fluoroscopic guidance, which was used to treat the osteoporotic vertebral compression fracture, vertebral metastases, verte-bral hemangioma, and multiple myeloma...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28727543/non-small-cell-lung-cancer-radiogenomics-map-identifies-relationships-between-molecular-and-imaging-phenotypes-with-prognostic-implications
#19
Mu Zhou, Ann Leung, Sebastian Echegaray, Andrew Gentles, Joseph B Shrager, Kristin C Jensen, Gerald J Berry, Sylvia K Plevritis, Daniel L Rubin, Sandy Napel, Olivier Gevaert
Purpose To create a radiogenomic map linking computed tomographic (CT) image features and gene expression profiles generated by RNA sequencing for patients with non-small cell lung cancer (NSCLC). Materials and Methods A cohort of 113 patients with NSCLC diagnosed between April 2008 and September 2014 who had preoperative CT data and tumor tissue available was studied. For each tumor, a thoracic radiologist recorded 87 semantic image features, selected to reflect radiologic characteristics of nodule shape, margin, texture, tumor environment, and overall lung characteristics...
July 20, 2017: Radiology
https://www.readbyqxmd.com/read/28722766/comparative-analysis-of-the-radiology-of-osteoporotic-vertebral-fractures-in-women-and-men-cross-sectional-and-longitudinal-observations-from-the-canadian-multicentre-osteoporosis-study-camos
#20
Brian C Lentle, Claudie Berger, Linda Probyn, Jacques P Brown, Lisa Langsetmo, Ben Fine, Kevin Lian, Arvind K Shergill, Jacques Trollip, Stuart Jackson, William D Leslie, Jerilynn C Prior, Stephanie M Kaiser, David A Hanley, Jonathan D Adachi, Tanveer Towheed, K Shawn Davison, Angela M Cheung, David Goltzman
We compared two methods for osteoporotic vertebral fracture (VF) assessment on lateral spine radiographs, the Genant semiquantitative (GSQ) technique and a modified algorithm-based qualitative (mABQ) approach. We evaluated 4465 women and 1771 men aged ≥50 years from the Canadian Multicentre Osteoporosis Study with available X-ray images at baseline. Observer agreement was lowest for grade 1 VFs determined by GSQ. Among physician readers, agreement was greater for VFs diagnosed by mABQ (ranging from 0.62 [95% confidence interval (CI) 0...
July 19, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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