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Abdominopelvic ct

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https://read.qxmd.com/read/30747299/differentiating-kidney-stones-from-phleboliths-in-unenhanced-low-dose-computed-tomography-using-radiomics-and-machine-learning
#1
Thomas De Perrot, Jeremy Hofmeister, Simon Burgermeister, Steve P Martin, Gregoire Feutry, Jacques Klein, Xavier Montet
OBJECTIVES: Distinguishing between kidney stones and phleboliths can constitute a diagnostic challenge in patients undergoing unenhanced low-dose CT (LDCT) for acute flank pain. We sought to investigate the accuracy of radiomics and a machine-learning classifier in differentiating between kidney stones and phleboliths on LDCT. METHODS: Radiomics features were extracted following a semi-automatic segmentation of kidney stones and phleboliths for two independent consecutive cohorts of patients undergoing LDCT for acute flank pain...
February 12, 2019: European Radiology
https://read.qxmd.com/read/30691670/the-effective-and-collective-dose-to-patients-undergoing-abdominopelvic-and-trunk-computed-tomography-examinations-a-belgian-multicentre-study
#2
Bieke De Roo, Nele Stichelbaut, Pieter Hoste, Koenraad Verstraete, Klaus Bacher
OBJECTIVES: This study aims to evaluate the radiation exposure to patients undergoing an abdominopelvic or a chest and abdominopelvic (trunk) CT examination and to assess compliance to imaging referral guidelines. METHODS: To this end, 357 standard abdominopelvic and trunk CT scans were collected from 8 Belgian institutions in 2011 and 2015. Effective dose (E) and collective dose were calculated using CT dose descriptors (CTDIvol and DLP), which were obtained from dose reports generated by the CT scanner...
February 2019: European Journal of Radiology
https://read.qxmd.com/read/30680214/human-immunodeficiency-virus-negative-multicentric-castleman-s-disease-coexistent-with-kaposi-s-sarcoma-on-18-f-fdg-pet-ct-a-case-report
#3
Jae Pil Hwang, Jiyoon Kim, Jung Mi Park
Multicentric Castleman's disease and Kaposi's sarcoma are more frequently observed in human immunodeficiency virus (HIV)-infected patients; however, 40-50% of the cases are HIV-negative. The present study reports the case of a 61-year-old man who presented with palpable masses in the axillary and right inguinal areas. The blood test results revealed increased serum erythrocyte sedimentation rate and C-reactive protein level, with negative serological markers, including for HIV. The patient was investigated using contrast-enhanced computed tomography (CT) and fluorine- 18 fluorodeoxyglucose positron emission tomography (18 F-FDG PET)/CT; the images revealed multiple enlarged and intensely hypermetabolic lymph nodes in the cervical, thoracic and abdominopelvic areas...
February 2019: Molecular and Clinical Oncology
https://read.qxmd.com/read/30672168/optimal-kiloelectron-volt-for-noise-optimized-virtual-monoenergetic-images-of-dual-energy-pediatric-abdominopelvic-computed-tomography-preliminary-results
#4
Taek Min Kim, Young Hun Choi, Jung Eun Cheon, Woo Sun Kim, In One Kim, Ji Eun Park, Su Mi Shin, Seong Yong Pak, Bernhard Krauss
OBJECTIVE: To compare quantitative and qualitative image quality parameters in pediatric abdominopelvic dual-energy CT (DECT) using noise-optimized virtual monoenergetic image (VMI) and conventional VMI at different kiloelectron volt (keV) levels. MATERIALS AND METHODS: Thirty-six consecutive abdominopelvic DECT scans were retrospectively included. Noise-optimized VMI and conventional VMI were reconstructed at seven energy levels, from 40 keV to 100 keV at 10 keV intervals...
February 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30667316/detection-of-lumbar-spine-osseous-metastases-using-dual-energy-ct-phantom-results-and-preliminary-clinical-validation
#5
Hsu-Cheng Huang, Ramya Srinivasan, Yuxin Sun, Galateia J Kazakia, Pei-Chen Lin, Benjamin M Yeh
OBJECTIVE: The purpose of this study was to evaluate the sensitivity, tumor conspicuity, and image quality of different material decomposition images of phantoms and patients with nearly isodense bone metastases using rapid-kilovoltage-switching dual-energy CT (DECT). MATERIALS AND METHODS: Fifty-one semianthropomorphic lumbar spine phantoms embedded with 75 simulated tumors were scanned without and with outer torso-attenuating encasement under the same scan settings...
February 2019: AJR. American Journal of Roentgenology
https://read.qxmd.com/read/30635023/reduced-scan-range-abdominopelvic-ct-in-patients-with-suspected-acute-appendicitis-impact-on-diagnostic-accuracy-and-effective-radiation-dose
#6
Dominik Zinsser, Michael Maurer, Phuong-Linh Do, Jakob Weiß, Mike Notohamiprodjo, Fabian Bamberg, Ahmed E Othman
BACKGROUND: To evaluate a reduced range CT protocol in patients with suspected acute appendicitis as compared to standard abdominal CT regarding diagnostic performance, effective radiation dose and organ doses. METHODS: In this study, we retrospectively included 90 patients (43 female, mean age 56.7 ± 17 years) with suspected acute appendicitis who underwent CT of abdomen and pelvis. From those CTs, we reconstructed images with a reduced scan range from L1 to the the pubic symphysis...
January 11, 2019: BMC Medical Imaging
https://read.qxmd.com/read/30624842/endoscopic-full-thickness-resection-of-a-colonic-schwannoma
#7
Mariana Ferreira Cardoso, Ming-Yan Cai, Mei-Dong Xu
We report the case of a 61-year-old female with a submucosal tumor (SMT) located in the proximal transverse colon, incidentally diagnosed on screening colonoscopy. Contrast-enhanced abdominopelvic computed tomography showed a well-circumscribed hyperenhancing mass with 20 mm, compatible with a gastrointestinal stromal tumor. On repeat colonoscopy (Olympus® ), after submucosal injection of indigo carmine and saline, a semi-circumferential incision was performed using the HookKnife™ (Olympus® ). This article is protected by copyright...
January 9, 2019: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://read.qxmd.com/read/30620698/dual-energy-ct-in-evaluation-of-the-acute-abdomen
#8
Nicolas Murray, Kathryn E Darras, Frances E Walstra, Mohammed F Mohammed, Patrick D McLaughlin, Savvas Nicolaou
Evaluation of the nontraumatic acute abdomen with multidetector CT has long been accepted and validated as the reference standard in the acute setting. Dual-energy CT has emerged as a promising tool, with multiple clinical applications in abdominal imaging already demonstrated. With its ability to allow characterization of materials on the basis of their differential attenuation when imaged at two different energy levels, dual-energy CT can help identify the composition of internal body constituents. Therefore, it is possible to selectively identify iodine to assess the enhancement pattern of an organ, including the identification of hyperenhancement in cases of inflammatory processes, or ischemic changes secondary to vascular compromise...
January 2019: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://read.qxmd.com/read/30600660/failure-of-ciprofloxacin-therapy-in-the-treatment-of-community-acquired-acute-pyelonephritis-caused-by-in-vitro-susceptible-escherichia-coli-strain-producing-ctx-type-extended-spectrum-%C3%AE-lactamase
#9
Hyeri Seok, Min Kyeong Cha, Cheol In Kang, Sun Young Cho, So Hyun Kim, Young Eun Ha, Doo Ryeon Chung, Kyong Ran Peck, Jae Hoon Song
While carbapenems are the drug of choice to treat extended-spectrum-β-lactamase (ESBL)-producing strains, some alternative carbapenem-sparing regimens are suggested for antibiotic stewardship. We experienced a case of ciprofloxacin treatment failure for acute pyelonephritis caused by an apparently susceptible Escherichia coli . A 71-year-old woman presented the emergency department with fever for 7 days and bilateral flank pain for 2 days. The laboratory results and abdominopelvic computed tomography finding were compatible with acute pyelonephritis...
December 2018: Infection & Chemotherapy
https://read.qxmd.com/read/30588536/laparoscopic-pancreaticoduodenectomy-with-segmental-resection-of-superior-mesenteric-vein-splenic-vein-portal-vein-confluence-in-pancreatic-head-cancer-can-it-be-a-standard-procedure
#10
Hyejin Park, Incheon Kang, Chang Moo Kang
The feasibility of laparoscopic pancreaticoduodenectomy (LPD) in the treatment of pancreatic cancer is still disputed. However, advances in surgical technique and accumulating experience have led to the use of LPD with combined vascular resection and reconstruction as a safe and feasible procedure, especially in pancreatic cancer with major vascular involvement. A 64-year-old woman presented with obstructive jaundice secondary to pancreatic head cancer. Contrast abdominopelvic computed tomography revealed a pancreatic head tumor measuring approximately 22 mm in diameter that was abutting the first jejunal branch of the superior mesenteric vein at an angle of <180°...
November 2018: Annals of Hepato-Biliary-Pancreatic Surgery
https://read.qxmd.com/read/30562789/-clinicopathological-analysis-of-aggressive-angiomyxoma-of-soft-tissue-in-abdomino-pelvic-cavity
#11
L Liu, L H Wang, Y B Ren, X S Rao, S M Yang
Aggressive angiomyxoma is a rare mesenchymal tumor. To discuss the clinicopathological characteristics, treatment and prognosis of aggressive angiomyxoma, four cases of aggressive angiomyxoma of soft tissue in abdominopelvic cavity were collected from January 2015 to August 2017 in Peking University International Hospital. The clinical data, imaging examination, histopathological features, immunophenotype, therapy and prognosis were analysed. The related literatures were reviewed. All of the patients were adult females, age range from 27 to 49 years and mean 33 years...
December 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://read.qxmd.com/read/30510947/ileal-bronchogenic-cyst-a-case-report-and-review-of-literature
#12
Hong-Yu Chen, Li-Yuan Fu, Zhen-Jun Wang
We herein report a rare case of ileal bronchogenic cyst that was found in a 39-year-old Chinese man. He had no symptoms and the physical examination was normal. Tumor markers were within the normal range. Abdominopelvic enhanced computed tomography showed a mass in the lower abdominal cavity and the tumor had a complete capsule. Diagnostic laparoscopy was then performed, which showed that a spheroid mass with a complete capsule was located at the antimesenteric border of the distal ileum 20 cm from the ileocecal valve, measuring 6...
November 26, 2018: World Journal of Clinical Cases
https://read.qxmd.com/read/30505826/traumatic-lumbar-hernia-clinical-features-and-management
#13
Youngeun Park, Min Chung, Min A Lee
Purpose: Traumatic lumbar hernia is rare, thus making diagnosis and proper treatment challenging. Accordingly, we aimed to investigate the clinical manifestations and proper management strategies of traumatic lumbar hernias. Methods: The medical records of patients with traumatic lumbar hernia treated at Gachon University Gil Hospital from March 2006 to February 2015, were retrospectively reviewed. Results: We included 5 men and 4 women (mean age, 55 years; range, 23-71 years)...
December 2018: Annals of Surgical Treatment and Research
https://read.qxmd.com/read/30505340/outcomes-of-selective-nonoperative-management-of-civilian-abdominal-gunshot-wounds-a-systematic-review-and-meta-analysis
#14
Aziza N Al Rawahi, Fatma A Al Hinai, Jamie M Boyd, Christopher J Doig, Chad G Ball, George C Velmahos, Andrew W Kirkpatrick, Pradeep H Navsaria, Derek J Roberts
Background: Although mandatory laparotomy has been standard of care for patients with abdominal gunshot wounds (GSWs) for decades, this approach is associated with non-therapeutic operations, morbidity, and long hospital stays. This systematic review and meta-analysis sought to summarize outcomes of selective nonoperative management (SNOM) of civilian abdominal GSWs. Methods: We searched electronic databases (March 1966-April 1, 2017) and reference lists of articles included in the systematic review for studies reporting outcomes of SNOM of civilian abdominal GSWs...
2018: World Journal of Emergency Surgery: WJES
https://read.qxmd.com/read/30481366/prolonged-thromboprophylaxis-with-low-molecular-weight-heparin-for-abdominal-or-pelvic-surgery
#15
REVIEW
Seth Felder, Morten Schnack Rasmussen, Ray King, Bradford Sklow, Mary Kwaan, Robert Madoff, Christine Jensen
BACKGROUND: This an update of the review first published in 2009.Major abdominal and pelvic surgery carries a high risk of venous thromboembolism (VTE). The efficacy of thromboprophylaxis with low molecular weight heparin (LMWH) administered during the in-hospital period is well-documented, but the optimal duration of prophylaxis after surgery remains controversial. Some studies suggest that patients undergoing major abdominopelvic surgery benefit from prolongation of the prophylaxis up to 28 days after surgery...
November 27, 2018: Cochrane Database of Systematic Reviews
https://read.qxmd.com/read/30476460/virtual-monochromatic-dual-energy-aortoiliac-ct-angiography-with-reduced-iodine-dose-a-prospective-randomized-study
#16
Manuel Patino, Anushri Parakh, Grace C Lo, Mukta Agrawal, Avinash R Kambadakone, George R Oliveira, Dushyant V Sahani
OBJECTIVE: The purpose of this study was to assess the feasibility of performing abdominopelvic aortoiliac CT angiography (CTA) with 16.0 g of iodine contrast medium acquired with low-energy (40 and 50 keV) virtual monochromatic (VMC) images with rapid-kilovoltage-switching dual-energy CT. SUBJECTS AND METHODS: A total of 52 adults with abdominal aortoiliac aneurysm and prior 120-kVp single-energy CTA (SECTA) with 33 g iodine (standard dose) underwent follow-up dual-energy CTA (DECTA) with a 52% reduced iodine dose...
November 26, 2018: AJR. American Journal of Roentgenology
https://read.qxmd.com/read/30472139/impact-of-overlying-personal-items-on-ct-dose-with-use-of-automated-tube-current-modulation-pilot-investigation
#17
Thomas R Mulvey, Xiangyang Tang, Elizabeth A Krupinski, Pardeep K Mittal, Courtney C Moreno
PURPOSE: To determine the incidence and impact of overlying radiopaque personal items (e.g., cellular phones, zippers) on CT dose and image quality with use of automated tube current modulation. METHODS: Topogram images from 100 consecutive adult outpatient CT abdomen pelvis studies were retrospectively reviewed, and the number and type of overlying radiopaque personal items were recorded. Additionally, an anthropomorphic phantom was imaged with overlying personal items 1) present in topogram and axial images; 2) present in topogram but removed prior to axial acquisition; and 3) present in topogram positioned outside the field of view of the axial acquisition...
November 2, 2018: Current Problems in Diagnostic Radiology
https://read.qxmd.com/read/30466235/analysis-of-gluteal-subcutaneous-and-muscle-thickness-in-infants-and-children-for-application-to-intramuscular-injection-autologous-fat-grafting-and-gluteal-artery-perforator-flaps
#18
Hyung Jun Min, Yu Jin Kim
BACKGROUND: To achieve improvements in intramuscular injection, autologous fat grafting, and gluteal artery perforator flaps in infants and children, the relationships of computed tomography (CT)-determined gluteal muscle thickness (MT) and subcutaneous tissue thickness (SCT) with age and body mass index (BMI) were analyzed. METHODS: Gluteal SCT and MT at ventrogluteal (VG) and dorsogluteal (DG) sites were measured in a standardized manner in 350 patients aged 0 to 6 years who had visited a tertiary hospital and had undergone abdominopelvic CT between January 2005 and December 2016...
November 2018: Archives of Plastic Surgery
https://read.qxmd.com/read/30455590/computed-tomography-imaging-of-acute-gastrointestinal-graft-versus-host-disease-after-haematopoietic-stem-cell-transplantation-in-children
#19
Taner Arpaci
Aim of the study: To evaluate computed tomography (CT) findings of gastrointestinal graft-versus-host disease (GI-GVHD) occurring in children after haematopoietic stem-cell transplantation (HSCT). Material and methods: From February 2013 to May 2018, 225 paediatric patients underwent HSCT. Sixty-eight patients (30%) presented with clinical diagnosis of acute GI-GVHD in the first 100 days after HSCT. Thirty-five (18 girls, 17 boys; age range, 2-18 years; mean age, 10...
2018: Contemporary Oncology Współczesna Onkologia
https://read.qxmd.com/read/30448900/low-dose-ct-imaging-of-the-acute-abdomen-using-model-based-iterative-reconstruction-a-prospective-study
#20
Fiachra Moloney, Karl James, Maria Twomey, David Ryan, Tyler M Grey, Amber Downes, Richard G Kavanagh, Niamh Moore, Mary Jane Murphy, Jackie Bye, Brian W Carey, Sean E McSweeney, Conor Deasy, Emmett Andrews, Fergus Shanahan, Michael M Maher, Owen J O'Connor
OBJECTIVES: Performance of a modified abdominopelvic CT protocol reconstructed using full iterative reconstruction (IR) was assessed for imaging patients presenting with acute abdominal symptoms. MATERIALS AND METHODS: Fifty-seven patients (17 male, 40 female; mean age of 56.5 ± 8 years) were prospectively studied. Low-dose (LD) and conventional-dose (CD) CTs were contemporaneously acquired between November 2015 and March 2016. The LD and CD protocols imparted radiation exposures approximating 10-20% and 80-90% those of routine abdominopelvic CT, respectively...
November 17, 2018: Emergency Radiology
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