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https://www.readbyqxmd.com/read/30337540/abdominal-aortic-aneurysms
#1
REVIEW
Natzi Sakalihasan, Jean-Baptiste Michel, Athanasios Katsargyris, Helena Kuivaniemi, Jean-Olivier Defraigne, Alain Nchimi, Janet T Powell, Koichi Yoshimura, Rebecka Hultgren
An abdominal aortic aneurysm (AAA) is a localized dilatation of the infrarenal aorta. AAA is a multifactorial disease, and genetic and environmental factors play a part; smoking, male sex and a positive family history are the most important risk factors, and AAA is most common in men >65 years of age. AAA results from changes in the aortic wall structure, including thinning of the media and adventitia due to the loss of vascular smooth muscle cells and degradation of the extracellular matrix. If the mechanical stress of the blood pressure acting on the wall exceeds the wall strength, the AAA ruptures, causing life-threatening intra-abdominal haemorrhage - the mortality for patients with ruptured AAA is 65-85%...
October 18, 2018: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/30324867/contrast-enhanced-ultrasound-of-the-abdominal-aorta-current-status-and-future-perspectives
#2
Xin Li, Daniel Staub, Vasileios Rafailidis, Mohammed Al-Natour, Sanjeeva Kalva, Sasan Partovi
Ultrasound has been established as an important diagnostic tool in assessing vascular abnormalities. Standard B-mode and Doppler techniques have inherent limitations with regards to detection of slow flow and small vasculature. Contrast-enhanced ultrasound (CEUS) is a complementary tool and is useful in assessing both the macro- and microvascular anatomy of the aorta. CEUS can also provide valuable physiological information in real-time scanning sessions due to the physical and safety profiles of the administered microbubbles...
October 16, 2018: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/30319208/triple-phase-mdct-of-liver-scan-protocol-modification-to-obtain-optimal-vascular-and-lesional-contrast
#3
Sheoran Sween, Chatterjee Samar, Sekhar M Binu
Context: With advances in 16-slice multidetector computed tomography (MDCT), the entire liver can be scanned in 4-6 s and a single breath-hold dual-phase scan can be performed in 12-16 s. Consequently, optimizing the scan window has become critical. Aim: The purpose of our study was to optimize scan delays using bolus-tracking techniques for triple-phase CT of the liver. Settings and Design: Fifty patients with liver lesions were randomly divided into two groups with 25 patients each...
July 2018: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/30312855/asymptomatic-systemic-air-embolism-after-ct-guided-percutaneous-transthoracic-needle-biopsy
#4
Hyunkyung Jang, Ji Young Rho, Young Ju Suh, Yeon Joo Jeong
PURPOSE: We presented details and incidence of systemic arterial embolism (SAE) following a CT-guided percutaneous transthoracic needle biopsy (PTNB) and evaluated risk factors for SAEs. METHODS: We retrospectively evaluated 1014 PTNBs performed in our hospital from 2005 to 2017. SAE was identified in the pulmonary vein, left heart, coronary artery, and aorta by reviewing post-biopsy CT images. Limited post-biopsy CT scans only covering the region biopsied were available until the first case of SAE was identified (n = 503)...
September 11, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/30306138/use-of-reboa-to-stabilize-in-hospital-iatrogenic-intra-abdominal-hemorrhage
#5
Christopher J Goodenough, Tyler A Cobb, John B Holcomb
Resuscitative endovascular balloon occlusion of the aorta (REBOA) has become an increasingly popular alternative to emergency thoracotomy and aortic cross-clamping in patients with exsanguinating hemorrhage.1 This new capability is increasingly being used in non-trauma situations.2 3 This report demonstrates another novel use of REBOA for iatrogenic intra-abdominal hemorrhage. An 83-year-old man with multiple medical comorbidities and a history of chronic mesenteric ischemia was admitted to our institution for an elective mesenteric revascularization...
2018: Trauma surgery & acute care open
https://www.readbyqxmd.com/read/30300198/occult-giant-cell-arteritis-concurrent-with-pancreatic-carcinoma-revealed-by-18f-fdg-pet-ct
#6
Zhanli Fu, Xueqi Chen, Xing Yang, Qian Li
An F-FDG PET/CT was performed on a 74-year-old woman with pancreatic carcinoma and liver metastases. Occult giant cell arteritis, involving the aorta, truncus brachiocephalicus, subclavian arteries, axillaries, external carotid arteries, vertebral arteries, and superficial temporal arteries, was accidentally revealed.
October 8, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/30291587/superior-mesenteric-artery-syndrome-a-prospective-study-in-a-single-institution
#7
Angelica Ganss, Sabrina Rampado, Edoardo Savarino, Romeo Bardini
BACKGROUND: Superior mesenteric artery syndrome (SMAS) is a rare cause of duodenal obstruction, resulting from the compression of the duodenum between superior mesenteric artery and aorta. This prospective registry aims to describe demographic, clinical, and outcome features of patients suffering from SMAS and to point out the indications for surgery. METHODS: Between 2008 and 2016, patients with chronic gastrointestinal symptoms and diagnosis of SMAS were included...
October 5, 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/30291527/which-is-the-proper-reference-tissue-for-measuring-the-change-in-fdg-pet-metabolic-volume-of-cardiac-sarcoidosis-before-and-after-steroid-therapy
#8
Sho Furuya, Osamu Manabe, Hiroshi Ohira, Kenji Hirata, Tadao Aikawa, Masanao Naya, Ichizo Tsujino, Kazuhiro Koyanagawa, Toshihisa Anzai, Noriko Oyama-Manabe, Tohru Shiga
BACKGROUND: Cardiac sarcoidosis (CS) is a rare but potentially life-threatening disease that causes conduction disturbance, systolic dysfunction, and, most notably, sudden cardiac death. 18 F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) plays important roles not only in diagnosing CS but also in evaluating the effects of anti-inflammatory therapy. A volume-based analysis of parameters measured by FDG PET, so-called cardiac metabolic volume (CMV), has emerged as a new assessment tool...
October 5, 2018: EJNMMI Research
https://www.readbyqxmd.com/read/30291025/distribution-diagnosis-and-treatment-of-pulmonary-sequestration-report-of-208-cases
#9
Na Zhang, Qi Zeng, Chenghao Chen, Jie Yu, Xu Zhang
OBJECTIVE: This study was performed to explore the clinical features, typing, distribution, and treatment of pulmonary sequestration (PS), with the aim of improving the awareness and treatment of this condition. METHODS: Clinical data regarding surgical procedures, outcomes, and prognosis of 208 pediatric patients with PS who were treated in our center from January 2005 to October 2017 were retrospectively analyzed. RESULTS: PS was confirmed by ultrasonography, enhanced computed tomography (CT), and/or magnetic resonance imaging (MRI) before surgery, and the surgeries were smoothly performed in all 208 patients (138 males, 70 females; age, 1 month to 14 years; mean age, 19...
September 7, 2018: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/30289734/igg4-related-cardiovascular-disease-from-the-aorta-to-the-coronary-arteries-multidetector-ct-and-pet-ct
#10
Noriko Oyama-Manabe, Satoshi Yabusaki, Osamu Manabe, Fumi Kato, Hiromi Kanno-Okada, Kohsuke Kudo
Immunoglobulin G4 (IgG4)-related disease can affect the cardiovascular system, including the coronary arteries and pericardium and especially the walls of large and medium-sized vessels. The presence of coronary involvement is critical, as this condition can cause myocardial ischemia or sudden cardiac death. Although histopathologic examination remains the reference standard for detecting organ involvement and diagnosing IgG4-related disease, obtaining biopsy or surgical specimens from the vessel wall is still challenging...
October 5, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/30288369/role-of-pet-ct-in-the-evaluation-of-aortic-disease
#11
REVIEW
Jahae Kim, Ho-Chun Song
Positron emission tomography (PET) /computed tomography (CT) has been established as a standard imaging modality in the evaluation of malignancy. Although PET/CT has played a major role in the management of oncology patients, its clinical use has also increased for various disorders other than malignancy. Growing evidence shows that PET/CT images have many advantages in aortic disease as well. This review article addresses the potential role of PET/CT in diseases involving the aorta, emphasizing its usefulness with regard to acute thoracic aortic syndromes, aortic aneurysm, atherosclerotic lesions, aortitis and aortic tumors...
September 2018: Chonnam Medical Journal
https://www.readbyqxmd.com/read/30287291/percutaneous-access-of-an-expanding-internal-iliac-artery-aneurysm-via-a-direct-posterior-transgluteal-approach
#12
Christopher A Worgul, George Wu, Nikhil Kansal
INTRODUCTION: Internal iliac artery aneurysms (IIAAs) are rare, comprising 0.3% of all aortoiliac aneurysms. Endovascular management is associated with lower morbidity and mortality than open repair. We present a 91-year-old female with a rapidly expanding 8.2 cm IIAA who previously underwent incomplete endovascular treatment, using EVAR, to exclude the right internal iliac artery (IIA). Transarterial access to the IIAA was not possible secondary to the iliac limb of the endograft over the origin of the internal iliac artery...
October 1, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/30285889/novel-4d-mri-of-tumor-infiltrating-vasculature-characterizing-tumor-and-vessel-volume-motion-for-selective-boost-volume-definition-in-pancreatic-radiotherapy
#13
Wensha Yang, Zhaoyang Fan, Zixin Deng, Jianing Pang, Xiaoming Bi, Benedick A Fraass, Howard Sandler, Debiao Li, Richard Tuli
BACKGROUND: Pancreatic ductal adenocarcinoma has dismal prognosis. Most patients receive radiation therapy (RT), which is complicated by respiration induced organ motion in upper abdomen. The purpose of this study is to report our early clinical experience in a novel self-gated k-space sorted four-dimensional magnetic resonance imaging (4D-MRI) with slab-selective (SS) excitation to highlight tumor infiltrating blood vessels for pancreatic RT. METHODS: Ten consecutive patients with borderline resectable or locally advanced pancreatic cancer were recruited to the study...
October 1, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/30281614/automated-tube-voltage-selection-in-pediatric-non-contrast-chest-ct
#14
Azadeh Hojreh, Peter Homolka, Jutta Gamper, Sylvia Unterhumer, Daniela Kienzl-Palma, Csilla Balassy, Thomas Wrba, Helmut Prosch
BACKGROUND: Modern CT scanners provide automatic dose adjustment systems, which are promising options for reducing radiation dose in pediatric CT scans. Their impact on patient dose, however, has not been investigated sufficiently thus far. OBJECTIVE: To evaluate automated tube voltage selection (ATVS) in combination with automated tube current modulation (ATCM) in non-contrast pediatric chest CT, with regard to the diagnostic image quality. MATERIALS AND METHODS: There were 160 non-contrast pediatric chest CT scans (8...
2018: PloS One
https://www.readbyqxmd.com/read/30268062/massive-systemic-arterial-air-embolism-caused-by-an-air-shunt-after-blunt-chest-trauma-a-case-report
#15
Kenji Kandori, Wataru Ishii, Ryoji Iiduka
INTRODUCTION: Systemic arterial air embolism (SAAE) is a rare but fatal condition, with only a few cases reported, and the detailed etiology underlying SAAE remains unknown. We report a first case of massive SAAE after blunt chest injury, wherein the presence of traumatic air shunt was confirmed by direct observation during surgery. We also summarize our experience with six other SAAE cases. PRESENTATION OF CASE: A 68-year-old woman was admitted in a state of cardiac arrest after a fall...
September 21, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/30259670/screening-for-thoracic-aortic-pathology-clinical-practice-in-a-single-tertiary-center
#16
Lidia R Bons, Lucas Uchoa de Assis, Silvy Dekker, Robert M Kauling, Judith A A E Cuypers, Hence J M Verhagen, Ricardo P J Budde, Jolien W Roos-Hesselink
OBJECTIVE: The aim is to present current clinical practice of thoracic aorta screening in a tertiary referral center. We identified how often imaging techniques were used for screening and established the value of transthoracic echocardiography (TTE) in comparison with computed tomography (CT) to detect aortic dilation. We also investigated which additional abnormalities of the heart, aorta or smaller arteries were discovered. DESIGN: All patients ≥15 years who visited our tertiary center in 2012-2016 for first thoracic aortic screening were retrospectively included...
September 27, 2018: Congenital Heart Disease
https://www.readbyqxmd.com/read/30255000/salvage-para-aortic-lymphadenectomy-in-recurrent-cervical-cancer-after-visualization-with-3-dimensional-computed-tomography-angiography
#17
Tomoyasu Kato, Ki Ho Seol, Jung Soo Youn, Dae Gy Hong
We report a case of salvage lymphadenectomy for an isolated metastatic lesion in the para-aortic lymph node (LN) in a 49-year old woman with a history of cervical cancer, initially treated with radical hysterectomy and adjuvant radiotherapy. Preoperative 3-dimensional (3D) computed tomography (CT) angiography clearly revealed a huge retro-crural metastatic LN with distinct demarcation. A metastatic lesion, more than 10 cm in size, was located behind the vena cava, aorta, and left kidney, encompassing the left renal and lumbar arteries...
September 2018: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/30244366/descending-aortic-banding-for-re-rupture-of-retrograde-aortic-dissection-after-emergency-thoracic-endovascular-aortic-repair
#18
Shigeru Hattori, Kenichiro Noguchi, Yusuke Gunji, Motoki Nagatsuka, Tsuyoshi Yamabe, Hidemitsu Ogino, Ikuo Katayama
Conversion to open repair after thoracic endovascular aortic repair (TEVAR) for acute type B aortic dissection is rare, but inevitable. We present a case of an 86-year-old man with ruptured type B aortic dissection after TEVAR. He received a successful stent-graft implantation of the descending aorta without any type of endoleak. After the patient was transferred to the intensive care unit, he went into a shock state. Contrast-enhanced CT revealed a re-rupture of acute retrograde type B aortic dissection. The false lumen was patent and perforated to the left thorax...
September 22, 2018: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/30244307/automatic-estimation-of-the-aortic-lumen-geometry-by-ellipse-tracking
#19
Pablo G Tahoces, Luis Alvarez, Esther González, Carmelo Cuenca, Agustín Trujillo, Daniel Santana-Cedrés, Julio Esclarín, Luis Gomez, Luis Mazorra, Miguel Alemán-Flores, José M Carreira
PURPOSE: The shape and size of the aortic lumen can be associated with several aortic diseases. Automated computer segmentation can provide a mechanism for extracting the main features of the aorta that may be used as a diagnostic aid for physicians. This article presents a new fully automated algorithm to extract the aorta geometry for either normal (with and without contrast) or abnormal computed tomography (CT) cases. METHODS: The algorithm we propose is a fast incremental technique that computes the 3D geometry of the aortic lumen from an initial contour located inside it...
September 22, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/30232028/aortic-pulsation-prevents-the-development-of-ossification-of-anterior-longitudinal-ligament-toward-the-aorta-in-patients-with-diffuse-idiopathic-skeletal-hyperostosis-dish-in-japanese-results-of-chest-ct-based-cross-sectional-study
#20
Kanji Mori, Takafumi Yayama, Kazuya Nishizawa, Akira Nakamura, Tomohiro Mimura, Shinji Imai
BACKGROUND: The development and etiology of diffuse idiopathic skeletal hyperostosis (DISH) were far from complete understanding. Even the precise mechanism of the development of its typical right-sided ossification of the anterior longitudinal ligament (OALL) frequently compared to 'flowing candle wax', a hallmark of DISH, remains unknown. METHODS: The participants of this study were 261 individuals (31 females and 230 males) diagnosed as DISH according to the criteria established by Resnick and Niwayama extracted from a consecutive 3013 patients who have undergone chest CT for the examination of pulmonary diseases in our institute...
September 16, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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