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Abdominopelvic ct

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https://www.readbyqxmd.com/read/30094779/preoperative-liver-registration-for-augmented-monocular-laparoscopy-using-backward-forward-biomechanical-simulation
#1
Erol Özgür, Bongjin Koo, Bertrand Le Roy, Emmanuel Buc, Adrien Bartoli
PURPOSE: Augmented reality for monocular laparoscopy from a preoperative volume such as CT is achieved in two steps. The first step is to segment the organ in the preoperative volume and reconstruct its 3D model. The second step is to register the preoperative 3D model to an initial intraoperative laparoscopy image. To date, there does not exist an automatic initial registration method to solve the second step for the liver in the de facto operating room conditions of monocular laparoscopy...
August 9, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/30084109/impact-of-low-kvp-scan-technique-on-oral-contrast-density-at-abdominopelvic-ct
#2
Douglas H Sheafor, Mark D Kovacs, Philip Burchett, Melissa M Picard, Brenton Davis, Andrew D Hardie
PURPOSE: To assess quantitative and qualitative effects of kVp on oral contrast density. MATERIALS AND METHODS: Three readers retrospectively reviewed 100 CT scans performed at a range of high- and low-energy settings, independently determining their preferred window and level settings for evaluation of the oral-contrast-opacified bowel. Contrast density was also assessed quantitatively in the stomach, jejunum, and ileum. Subsequently, a range of oral contrast dilutions were imaged at varying kVp's in a commercially available CIRS tissue equivalent phantom model...
August 6, 2018: La Radiologia Medica
https://www.readbyqxmd.com/read/30079287/rare-abdominopelvic-actinomycosis-causing-an-intestinal-band-obstruction-and-mimicking-an-ovarian-malignancy
#3
Sakthivel Chinnakkulam Kandhasamy, Byshetty Rajendar, Ashok Kumar Sahoo, Rajesh Nachiappa Ganesh, Mangala Goneppanavar, Vishnu Prasad Nelamangala Ramakrishnaiah
Actinomyces israelii, a commensal of the bronchial and gastrointestinal tracts, is responsible for the majority of actinomycostic infections in humans. Actinomycosis has widely varying clinical presentations ranging from asymptomatic states to infiltrative mass lesions that mimic malignant abdominopelvic disease. Described as one of the most misdiagnosed diseases, actinomycosis poses challenges to accurate preoperative diagnosis. A 67-year-old woman with no significant medical history presented with features of acute intestinal obstruction...
May 31, 2018: Curēus
https://www.readbyqxmd.com/read/30075951/screening-cancer-after-venous-thromboembolism-how-many-abnormal-tests-before-diagnosing-cancer-an-analysis-of-practice
#4
Cécile Duvillard, Elodie De Magalhaes, Nathalie Moulin, Sandrine Accassat, Patrick Mismetti, Laurent Bertoletti
INTRODUCTION: Since Trousseau, we knows that venous thrombemboembolism (VTE) can reveal occult cancer. Different strategies of cancer screening have been evaluated: they are often time-consuming, cause stress and anxiety, and frequently require second-look examinations (due to the risk of false positives), with ultimately a very low yield (about 5%). We evaluated the number of suspect cancer tests before reporting them to the number of cancers finally diagnosed, after a VTE, in the setting of practice's analysis...
July 31, 2018: La Presse Médicale
https://www.readbyqxmd.com/read/30075499/successful-treatment-of-anti-nmda-receptor-encephalitis-with-early-teratoma-removal-and-plasmapheresis-a-case-report
#5
Monica Gomes Ferreira, Victoria Lapresa Alcalde, María Helena García Sánchez, Lourdes Hernández Hernández, María José Doyague Sánchez
RATIONALE: This report describes a Successful treatment of anti-NMDA receptor encephalitis with early teratoma removal and plasmapheresis. PATIENT CONCERNS: We present a 31-year-old Caucasian nulliparous patient who was admitted as an emergency with general illness status accompanied by holocranial cephalalgia and fever. DIAGNOSES: The previous symptoms were followed by disorientation, persecutory delusion, incoherent language, and tonic-clonic seizure...
August 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/30018909/an-unusual-presentation-of-ovarian-dermoid-cyst-a-case-report-and-review-of-literature
#6
Mohamed Amine Azami, Iliass Elalami, Abderrahim Siati, Najjat Lamalmi
Dermoid cysts or mature cystic teratoma are the most common type of ovarian germ cell tumor. It may be complicated by torsion, rupture, chemical peritonitis and malignant change but is rarely complicated by infection. We present a case of an ovarian dermoid cyst with super-infection caused by Schistosoma haematobium ( S. haematobium ). We present here a case of incidental finding of S. haematobium eggs in an infected cystic teratoma of the ovary because of the rare occurrence of this lesion. A 45-year-old Moroccan woman admitted to the gynecological department because of abdominal pain and fever...
July 2018: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/29982133/low-voltage-80-kvp-abdominopelvic-computed-tomography-allows-60-contrast-dose-reduction-in-patients-at-risk-of-contrast-induced-nephropathy
#7
Kazumi Araki, Takeshi Yoshizako, Rika Yoshida, Keiji Tada, Hajime Kitagaki
PURPOSE: The purpose of this study was to evaluate the quality of image in abdominopelvic late phase computed tomography (CT) with a low tube voltage plus low dose contrast medium (CM) protocol (80-kVp, 60% CM). A compared with the conventional protocol (120-kVp, 100% CM) B in the same patients. MATERIAL AND METHODS: This study included with 22 patients {36 to 77 kg (mean: 55.5 kg)} who had renal insufficiency and had experience of performance conventional CT without renal insufficiency during pre-18 months...
June 9, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29948057/feasibility-and-diagnostic-performance-of-hybrid-pet-mri-compared-with-pet-ct-for-gynecological-malignancies-a-prospective-pilot-study
#8
Melissa Schwartz, Somali C Gavane, Jad Bou-Ayache, Valentin Kolev, Konstantin Zakashansky, Monica Prasad-Hayes, Bachir Taouli, Linus Chuang, Lale Kostakoglu
PURPOSE: The purpose of the study was to assess the feasibility and diagnostic performance of FDG-PET/MR imaging compared to PET/CT for staging of patients with a gynecological malignancy. METHODS: 25 patients with a gynecological malignancy were prospectively enrolled into this pilot study. Patients underwent sequential full-body PET/CT and PET/MR of the abdomen and pelvis after administration of a single dose of F-18 FDG. PET/MRI and PET/CT images were independently reviewed by two expert radiologists...
June 12, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29946923/validation-of-a-dixon-based-fat-quantification-technique-for-the-measurement-of-visceral-fat-using-a-ct-based-reference-standard
#9
Katherine M Heckman, Bamidele Otemuyiwa, Thomas L Chenevert, Dariya Malyarenko, Brian A Derstine, Stewart C Wang, Matthew S Davenport
PURPOSE: The purpose of the study is to determine whether a novel semi-automated DIXON-based fat quantification algorithm can reliably quantify visceral fat using a CT-based reference standard. METHODS: This was an IRB-approved retrospective cohort study of 27 subjects who underwent abdominopelvic CT within 7 days of proton density fat fraction (PDFF) mapping on a 1.5T MRI. Cross-sectional visceral fat area per slice (cm2 ) was measured in blinded fashion in each modality at intervertebral disc levels from T12 to L4...
June 27, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29943669/perinephric-fat-stranding-is-associated-with-elevated-creatinine-among-patients-with-acutely-obstructing-ureterolithiasis
#10
M Ryan Farrell, Dimitri Papagiannopoulos, John Ebersole, Gregory White, Leslie A Deane
INTRODUCTION: Pyelovenous/pyelolymphatic backflow from acute ureteral obstruction, manifesting radiologically as perinephric fat stranding (PFS), may result in elevated serum creatinine. Among patients with acutely obstructing ureterolithiasis, we evaluated the relationship between degree of PFS and changes in serum creatinine from baseline. METHODS: Our tertiary care center's radiology dictation system (Fluency Discovery, M Modal) was queried for noncontrast abdominopelvic CT studies obtained in the Emergency Department for patients with obstructing ureteral calculi from 7/2015 to 4/2016...
July 31, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29923976/a-rare-case-report-of-ovarian-juvenile-granulosa-cell-tumor-with-massive-ascites-as-the-first-sign-and-review-of-literature-case-report-and-review-of-literature
#11
Liang Ma, Liwen Zhang, Yun Zhuang, Yanbo Ding, Jianping Chen
RATIONALE: Massive ascites as the first sign of ovarian juvenile granulosa cell tumor (JGCT) in an adolescent is an extremely rare, and its clinical features and treatment methods have not been well described. PATIENT CONCERNS: The clinical characteristics, diagnosis, and treatment methods in a 19-year-old girl who presented with massive abdominal distention and ascites was retrospectively reviewed. Abdominopelvic ultrasonography showed a large amount of ascites...
June 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29873504/using-body-mass-index-and-bioelectric-impedance-analysis-to-assess-the-need-for-positive-oral-contrast-agents-before-abdominopelvic-ct
#12
Yuhao Wu, Ismail Ali, Bernd Teunissen, Timothy O'Connell, Faisal Khosa, Savvas Nicolaou, Patrick McLaughlin
OBJECTIVE: The objective of this study was to determine whether body fat percentage, measured using a portable handheld bioelectric impedance analysis (BIA) device, and body mass index (BMI, weight in kilograms divided by the square of height in meters) can estimate the amount of intraabdominal and intrapelvic fat and thereby predict the need for oral contrast material before abdominopelvic CT. SUBJECTS AND METHODS: A prospective, institutional review board-approved study consisting of 101 patients who presented to the emergency department of a level I trauma center was conducted between June 1, 2016, and July 19, 2016...
August 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29789232/high-grade-serous-ovarian-cancer-use-of-machine-learning-to-predict-abdominopelvic-recurrence-on-ct-on-the-basis-of-serial-cancer-antigen-125-levels
#13
Atul B Shinagare, Patricia Balthazar, Ivan K Ip, Ronilda Lacson, Joyce Liu, Nikhil Ramaiya, Ramin Khorasani
PURPOSE: The aim of this study was to use machine learning to predict abdominal recurrence on CT on the basis of serial cancer antigen 125 (CA125) levels in patients with advanced high-grade serous ovarian cancer on surveillance. METHODS: This institutional review board-approved, HIPAA-compliant, retrospective, hypothesis-generating study included all 57 patients (mean age, 61 ± 11.2 years) with advanced high-grade serous ovarian cancer who underwent cytoreductive surgery from January to December 2012, followed by surveillance abdominopelvic CT and corresponding CA125 levels...
May 19, 2018: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29788534/prospective-evaluation-of-68-ga-dotatate-pet-ct-in-limited-disease-neuroendocrine-tumours-and-or-elevated-serum-neuroendocrine-biomarkers
#14
Sophie Gabriel, Philippe Garrigue, Laetitia Dahan, Frédéric Castinetti, Frédéric Sebag, Karine Baumstark, Cendrine Archange, Abhishek Jha, Karel Pacak, Benjamin Guillet, David Taïeb
CONTEXT: The 68 Ga-labelled somatostatin analogues (68 Ga-DOTA-SSAs) is becoming popular as an important diagnostic tool in neuroendocrine tumours as evidenced by a growing number of reports detailing institutional experience with various DOTA peptides. However, only few prospective studies have compared 68 Ga-DOTA-SSAs and somatostatin receptor scintigraphy (SRS) in gastroenteropancreatic neuroendocrine tumours (GEP-NETs) and pulmonary neuroendocrine tumours. OBJECTIVE: The aim of our prospective study was to perform head-to-head comparison between 68  Ga-DOTATATE PET/CT and standard imaging work-up (SI) that included multiphasic CT, liver MRI and SRS using single photon emission computed tomography...
May 22, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29770208/case-report-polyarteritis-nodosa-or-complicated-henoch-schonlein-purpura-igav-a-rare-case
#15
Sajad Hasanzadeh, Seyedeh Maryam Alavi, Elahe Masnavi, Saeid Jokar, Maryam Rohani
Background : Polyarteritis nodosa (PAN) is a vasculitis that affects medium-sized arteries. PAN is a rare disease and requires a high clinical suspicion for diagnosis. PAN and HSP (newly named Immunoglobulin A-associated vasculitis) have narrowing differential diagnosis. Here, we reported a case of PAN. Case presentation : Our patient was a 65-year-old woman that came to hospital due to abdominal pain and skin lesion on the right upper and right lower extremities. All rheumatologic tests were negative. A biopsy of the skin lesion was reported as mild hyperkeratosis, slight spongiosis with intact basal layer...
2018: F1000Research
https://www.readbyqxmd.com/read/29739656/hip-dislocations-and-concurrent-injuries-in-motor-vehicle-collisions
#16
Joseph Cooper, Justin Tilan, Alexis D Rounds, Santano Rosario, Kenji Inaba, Geoffrey S Marecek
INTRODUCTION: Motor Vehicle Collisions (MVC) can cause high energy hip dislocations associated with serious injury profiles impacting triage. Changes in safety and regulation of restraint devices have likely lowered serious injuries from what was previously reported in the 1990s. This study aims to describe modern-day injury profile of patients with traumatic hip dislocations, with special attention to aortic injury. METHODS: Retrospective review of a prospectively maintained trauma database at an urban level 1 trauma center was conducted...
April 27, 2018: Injury
https://www.readbyqxmd.com/read/29736107/sigmoid-colon-perforation-mimics-a-tuboovarian-absces
#17
Cemile Dayangan Sayan, Mahmut Ilkin Yeral, Zehra Sema Ozkan, Gokhan Karaca, Nese Asal, Oktay Aydın, Nevin Sagsoz
Introduction: An adnexal mass may be diagnosed after a routine pelvic ultrasonographic examination or an emergent hospital admission due to rupture of ectopic pregnancy, adnexal torsion or rupture of tuboovarian abscess. It is necessary to evaluate the origin of the mass initially and to classify patients who need further evaluation and treatment for an urgent condition. Case presentation: We report a case of sigmoid colon rupture due to sigmoid colon adenocarcinoma presenting as acute abdomen with left adnexal mass in a 28 years old woman...
April 2018: Medical Archives
https://www.readbyqxmd.com/read/29732360/primary-malignant-melanoma-of-the-small-intestine-a-report-of-2-cases-and-a-review-of-the-literature
#18
Kwan Mo Yang, Chan Wook Kim, So-Woon Kim, Jong Lyul Lee, Yong Sik Yoon, In Ja Park, Seok-Byung Lim, Chang Sik Yu, Jin Cheon Kim
The majority of malignant melanomas in the small intestine are metastases from primary cutaneous lesions, it can also develop as a primary mucosal tumor in the gastrointestinal tract. In this report, we present rare cases of primary small bowel melanoma and review the current literature. A 78-year-old male presented with abdominal pain and CT enterography identified a ileal mass. A 79-year-old female presented with signs and symptoms of partial small bowel obstruction. Abdominopelvic CT and small bowel series revealed a obstructing mass in the distal jejunum...
May 2018: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/29724418/acr-appropriateness-criteria-%C3%A2-pretreatment-staging-of-muscle-invasive-bladder-cancer
#19
Christian B van der Pol, V Anik Sahni, Steven C Eberhardt, Aytekin Oto, Oguz Akin, Lauren F Alexander, Brian C Allen, Fergus V Coakley, Adam T Froemming, Pat F Fulgham, Keyanoosh Hosseinzadeh, Jodi K Maranchie, Rekha N Mody, Nicola Schieda, David M Schuster, Aradhana M Venkatesan, Carolyn L Wang, Mark E Lockhart
Muscle-invasive bladder cancer (MIBC) has a tendency toward urothelial multifocality and is at risk for local and distant spread, most commonly to the lymph nodes, bone, lung, liver, and peritoneum. Pretreatment staging of MIBC should include imaging of the urothelial upper tract for synchronous lesions; imaging of the chest, abdomen, and pelvis for metastases; and MRI pelvis for local staging. CT abdomen and pelvis without and with contrast (CT urogram) is recommended to assess the urothelium and abdominopelvic organs...
May 2018: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29692826/assessment-of-blunt-splenic-trauma-which-imaging-scoring-system-is-superior
#20
Atoosa Adibi, Farbod Ferasat, Mohammad Mehdi Baradaran Mahdavi, Kimia Kazemi, Sina Sadeghian
Background: Spleen is the most common viscera that may be hurt in blunt abdominal trauma. Operative or nonoperative management of splenic injury is a dilemma. The American Association for the Surgery of Trauma (AAST) is the most common grading system which has been used for the management of blunt splenic injuries. The new recommended grading system assesses other aspects of splenic injury such as contrast extravasation, pseudoaneurysm, arteriovenous fistula, and severity of hemoperitoneum, as well...
2018: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
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