keyword
MENU ▼
Read by QxMD icon Read
search

perfusion CT liver

keyword
https://www.readbyqxmd.com/read/29792720/-experimental-processing-of-corrosion-casts-of-large-animal-organs
#1
R Pálek, V Liška, L Eberlová, H Mírka, M Svoboda, S Haviar, M Emingr, O Brzoň, P Mik, V Třeška
INTRODUCTION: Corrosion casts (CCs) are used for the visualization and assessment of hollow structures. CCs with filled capillaries enable (with the help of imaging methods) to obtain data for mathematical organ perfusion modelling. As the processing is more difficult in case of organs with greater volume of the vasculature, mainly organs from small animals have been cast up to now. The aim of this study was to optimize the protocol of corrosion casting of different organs of pig. Porcine organs are relatively easily accessible and frequently used in experimental medicine...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29785411/low-dose-ct-perfusion-of-the-liver-using-reconstruction-of-difference
#2
Saeed Seyyedi, Eleni Liapi, Tobias Lasser, Robert Ivkov, Rajeev Hatwar, J Webster Stayman
Liver CT perfusion (CTP) is used in the detection, staging, and treatment response analysis of hepatic diseases. Unfortunately, CTP radiation exposures is significant, limiting more widespread use. Traditional CTP data processing reconstructs individual temporal samples, ignoring a large amount of shared anatomical information between temporal samples, suggesting opportunities for improved data processing. We adopt a prior-image-based reconstruction approach called Reconstruction of Difference (RoD) to enable low-exposure CTP acquisition...
May 2018: IEEE Transactions on Radiation and Plasma Medical Sciences
https://www.readbyqxmd.com/read/29775966/an-enigmatic-case-presentation-of-budd-chiari-syndrome-with-pulmonary-embolism-an-unusual-syndrome-with-an-uncommon-complication
#3
A M Al-Sharydah, A H Al-Abdulwahhab, H A Abu AlOla
INTRODUCTION: In patients with a hypercoagulable state, such as patients with pulmonary embolism and/or Budd-Chiari syndrome, the complications from multiple gene mutations are more numerous than those from a single mutation. The authors present a woman with no major prior medical history who presented with pulmonary embolism and Budd-Chiari syndrome; this enigmatic co-occurrence has never been solely reported without underlying aetiology in a patient without prior medical conditions...
May 3, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29758936/evaluation-of-integrated-color-coded-perfusion-analysis-for-contrast-enhanced-ultrasound-ceus-after-percutaneous-interventions-for-malignant-liver-lesions-first-results
#4
I Wiesinger, L P Beyer, N Zausig, N Verloh, P Wiggermann, C Stroszczynski, E M Jung
BACKGROUND:  With the rising number of percutaneous ablation therapies in malignant liver lesions there is a need of reliable diagnostics after the intervention to differentiate between reactive changes and tumor. PURPOSE: To assess the success of percutaneous ablation therapies for malignant liver lesions using CEUS with perfusion analysis. MATERIAL AND METHODS: Retrospective analysis of perfusion analysis for 67 patients with 94 malignant liver lesions, treated with ablation therapies...
2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29755841/quantitative-pet-of-liver-functions
#5
REVIEW
Susanne Keiding, Michael Sørensen, Kim Frisch, Lars C Gormsen, Ole Lajord Munk
Improved understanding of liver physiology and pathophysiology is urgently needed to assist the choice of new and upcoming therapeutic modalities for patients with liver diseases. In this review, we focus on functional PET of the liver: 1) Dynamic PET with 2-deoxy-2-[18 F]fluoro- D -galactose (18 F-FDGal) provides quantitative images of the hepatic metabolic clearance K met (mL blood/min/mL liver tissue) of regional and whole-liver hepatic metabolic function. Standard-uptake-value ( SUV ) from a static liver 18 F-FDGal PET/CT scan can replace K met and is currently used clinically...
2018: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29704013/-ceus-diagnostic-of-malignant-liver-lesions
#6
REVIEW
G Negrão de Figueiredo, K Müller-Peltzer, J Rübenthaler, D A Clevert
CLINICAL/METHODICAL ISSUE: Cross-sectional modalities or conventional ultrasound are not always able to sufficiently identify and characterize malignant liver lesions. STANDARD RADIOLOGICAL METHODS: The evaluation of malignant liver lesions in conventional ultrasound relies on echostructure, shape and borders, but often warrants additional contrast-enhanced computed tomography (CT) or magnetic resonance imaging (MRI) studies. METHODICAL INNOVATIONS: Contrast-enhanced ultrasound (CEUS) is a relatively safe imaging technique used for the detection and characterization of malignant liver lesions...
April 27, 2018: Der Radiologe
https://www.readbyqxmd.com/read/29688948/hepatic-hemangioma-on-spect-myocardial-perfusion-imaging
#7
Susan Taylor, Tricia Francisco, Janet A Munroe, Hadyn T Williams
Extracardiac uptake on SPECT MPI, seen with physiologic radiotracer distribution, benign or malignant neoplasm, infection, inflammation, or granulomatous disease, may confound the accuracy of MPI or lead to unsuspected pathology. A 38-year-old woman with end-stage renal disease on hemodialysis had SPECT MPI for renal transplant preoperative risk stratification, showing left anterior descending artery ischemia and an intense extracardiac soft tissue focus adjacent to the diaphragmatic right ventricle concerning for focal infection related to prior coronary or gastric surgeries or tumor...
June 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29662787/steroid-associated-osteonecrosis-animal-model-in-rats
#8
Li-Zhen Zheng, Jia-Li Wang, Ling Kong, Le Huang, Li Tian, Qian-Qian Pang, Xin-Luan Wang, Ling Qin
Objective: Established preclinical disease models are essential for not only studying aetiology and/or pathophysiology of the relevant diseases but more importantly also for testing prevention and/or treatment concept(s). The present study proposed and established a detailed induction and assessment protocol for a unique and cost-effective preclinical steroid-associated osteonecrosis (SAON) in rats with pulsed injections of lipopolysaccharide (LPS) and methylprednisolone (MPS). Methods: Sixteen 24-week-old male Sprague-Dawley rats were used to induce SAON by one intravenous injection of LPS (0...
April 2018: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29661601/corrigendum-to-evaluation-of-texture-analysis-parameter-for-response-prediction-in-patients-with-hepatocellular-carcinoma-undergoing-drug-eluting-bead-transarterial-chemoembolization-deb-tace-using-biphasic-contrast-enhanced-ct-image-data-correlation-with-liver
#9
Christopher Kloth, Wolfgang Maximilian Thaiss, Rainer Kärgel, Rainer Grimmer, Jan Fritz, Sorin Dumitru Ioanoviciu, Dominik Ketelsen, Konstantin Nikolaou, Marius Horger
No abstract text is available yet for this article.
April 13, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29613843/intraprocedural-ablation-margin-assessment-by-using-ammonia-perfusion-pet-during-fdg-pet-ct-guided-liver-tumor-ablation-a-pilot-study
#10
Paul B Shyn, Leigh C Casadaban, Nisha I Sainani, Cheryl A Sadow, Paul M Bunch, Vincent M Levesque, Chun K Kim, Victor H Gerbaudo, Stuart G Silverman
Purpose To prospectively determine whether nitrogen 13 (13 N) ammonia perfusion positron emission tomography (PET) during fluorine 18 fluorodeoxyglucose (FDG) PET/computed tomography (CT)-guided liver tumor ablation can be used to intraprocedurally assess ablation margins. Materials and Methods Eight patients (five women and three men; age range, 36-74 years; mean age, 57 years) were enrolled in this pilot study and underwent FDG PET/CT-guided microwave ablation of 11 FDG-avid liver metastases (mean diameter, 22 mm; range, 11-34 mm)...
April 3, 2018: Radiology
https://www.readbyqxmd.com/read/29602726/does-enhancement-or-perfusion-on-preprocedure-ct-predict-outcomes-after-embolization-of-hepatocellular-carcinoma
#11
Alessandra Borgheresi, Adrian Gonzalez-Aguirre, Karen T Brown, George I Getrajdman, Joseph P Erinjeri, Anne Covey, Hooman Yarmohammadi, Etay Ziv, Constantinos T Sofocleous, Franz Edward Boas
RATIONALE AND OBJECTIVE: The objective of this study was to evaluate whether quantitative enhancement or perfusion measurements on preprocedure triphasic computed tomography (CT) can be used to predict response or overall survival after embolization of hepatocellular carcinoma. MATERIALS AND METHODS: The institutional review board approved this retrospective review of 63 patients with hepatocellular carcinoma treated with particle embolization between March 2009 and December 2014...
March 27, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29531482/computed-tomography-perfusion-imaging-for-the-diagnosis-of-hepatic-alveolar-echinococcosis
#12
Recep Sade, Mecit Kantarci, Berhan Genc, Hayri Ogul, Betul Gundogdu, Omer Yilmaz
Objective: Alveolar echinococcosis (AE) is a rare life-threatening parasitic infection. Computed tomography perfusion (CTP) imaging has the potential to provide both quantitative and qualitative information about the tissue perfusion characteristics. The purpose of this study was the examination of the characteristic features and feasibility of CTP in AE liver lesions. Material and Methods: CTP scanning was performed in 25 patients who had a total of 35 lesions identified as AE of the liver...
February 2018: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/29520201/computed-tomographic-perfusion-imaging-for-the-prediction-of-response-and-survival-to-transarterial-chemoembolization-of-hepatocellular-carcinoma
#13
Peter Popovic, Ana Leban, Klara Kregar, Manca Garbajs, Rok Dezman, Matjaz Bunc
Background: The purpose of this retrospective cohort study was to evaluate the clinical value of computed tomographic perfusion imaging (CTPI) parameters in predicting the response to treatment and overall survival in patients with hepatocellular carcinoma (HCC) treated with drug-eluting beads transarterial chemoembolization (DEBTACE). Patients and methods: Between December 2010 and January 2013 eighteen patients (17 men, 1 woman; mean age 69 ± 5.8 years) with intermediate stage HCC underwent CTPI of the liver prior to treatment with DEBTACE...
March 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/29454098/quantitative-imaging-features-and-postoperative-hepatic-insufficiency-a-multi-institutional-expanded-cohort
#14
Linda M Pak, Jayasree Chakraborty, Mithat Gonen, William C Chapman, Richard K G Do, Bas Groot Koerkamp, Kees Verhoef, Ser Yee Lee, Marco Massani, Eric P van der Stok, Amber L Simpson
BACKGROUND: Post-hepatectomy liver insufficiency (PHLI) is a significant cause of morbidity and mortality after liver resection. Quantitative imaging analysis using CT scans measures variations in pixel intensity related to perfusion. A preliminary study demonstrated a correlation between quantitative imaging features of the future liver remnant (FLR) parenchyma from preoperative CT scans and PHLI. The objective of this study was to explore the potential application of quantitative imaging analysis in PHLI in an expanded, multi-institutional cohort...
May 2018: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/29394753/-multidisciplinary-therapy-for-hepatocellular-carcinoma-with-peritoneal-dissemination
#15
Natsuko Yamauchi, Masahiro Kido, Shohei Komatsu, Motofumi Tanaka, Hisoka Kinoshita, Daisuke Tsugawa, Masafumi Awazu, Kimihiko Ueno, Hirochika Toyama, Sachio Terai, Hideyo Mukubou, Tetsuo Ajiki, Takumi Fukumoto
We report a case of bilobar multiple hepatocellular carcinoma(HCC)with peritoneal dissemination successfullytreated by dual treatment with reductive surgeryplus percutaneous isolated hepatic perfusion(PIHP). A 73-year-old man had sudden abdominal pain and was diagnosed bilobar multiple HCC through some examinations. The abdominal CT scan demonstrated onlya peritoneal dissemination under the liver. We performed partial hepatectomyof the lateral segment and the Spiegel lobe, and resected a peritoneal dissemination...
November 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29386002/extended-left-hepatectomy-for-intrahepatic-cholangiocarcinoma-hepatic-vein-reconstruction-with-in-situ-hypothermic-perfusion-and-extracorporeal-membrane-oxygenation
#16
Deniz Balci, Menekse Ozcelik, Elvan Onur Kirimker, Arda Cetinkaya, Evren Ustuner, Mehmet Cakici, Bahadir Inan, Zekeriyya Alanoglu, Sadik Bilgic, Ahmet Ruchan Akar
BACKGROUND: Liver resection for intrahepatic cholangiocarcinoma (ICC) with invasion of the inferior vena cava (IVC) and hepatic veins (HV) is a challenging procedure. CASE PRESENTATION: We report a case of a 63-year-old woman with a 6-cm, centrally located liver mass. Her biochemistry results were normal except for a Ca19-9 level of 1199 U/ml. The liver biopsy was consistent with ICC and 60% macrosteatosis. Abdominal CT scans revealed a large central mass invading the left HV, middle HV and right HV, infringing on their junction with the vena cava...
January 31, 2018: BMC Surgery
https://www.readbyqxmd.com/read/29380302/split-liver-technique-with-middle-hepatic-vein-reconstruction-on-livers-from-transplant-hepatectomies-a-useful-tool-for-surgical-improvement
#17
Raffaella Sguinzi, Fabio Ferla, Riccardo De Carlis, Enzo Andorno, Paolo Aseni, Luciano De Carlis
Livers removed during transplant hepatectomies could represent a useful anatomic ex vivo resource for surgical training, since they are intact and not altered by post-mortem changes yet. The aim of this study is to investigate the effectiveness of such kind of surgical training applied on some hepatic surgery techniques. In the present paper, we focused on split liver operation and middle hepatic vein (MHV) bipartition/reconstruction, since these procedures have a quite long learning curve. Seven native livers were submitted to split liver procedure by a senior resident assisted by a fully trained hepatic surgeon...
January 27, 2018: Updates in Surgery
https://www.readbyqxmd.com/read/29368273/modeling-of-the-contrast-enhanced-perfusion-test-in-liver-based-on-the-multi-compartment-flow-in-porous-media
#18
Eduard Rohan, Vladimír Lukeš, Alena Jonášová
The paper deals with modeling the liver perfusion intended to improve quantitative analysis of the tissue scans provided by the contrast-enhanced computed tomography (CT). For this purpose, we developed a model of dynamic transport of the contrast fluid through the hierarchies of the perfusion trees. Conceptually, computed time-space distributions of the so-called tissue density can be compared with the measured data obtained from CT; such a modeling feedback can be used for model parameter identification. The blood flow is characterized at several scales for which different models are used...
January 24, 2018: Journal of Mathematical Biology
https://www.readbyqxmd.com/read/29297607/signal-enhancement-ratio-imaging-of-the-lung-parenchyma-with-ultra-fast-steady-state-free-precession-mri-at-1-5t
#19
Orso Pusterla, Gregor Sommer, Francesco Santini, Mark Wiese, Didier Lardinois, Michael Tamm, Jens Bremerich, Grzegorz Bauman, Oliver Bieri
BACKGROUND: Lung perfusion MRI after i.v. gadolinium (Gd) contrast administration is commonly based on spoiled gradient-echo acquisitions, such as volume-interpolated breath-hold examinations (VIBE), suffering from low signal-to-noise in the parenchyma. PURPOSE: To investigate the lung signal enhancement ratio (SER) with ultra-fast steady-state free precession (ufSSFP) after Gd-administration. STUDY TYPE: Retrospective. SUBJECTS: Ten subjects with healthy lungs; nine patients with pulmonary diseases (chronic obstructive pulmonary disease [COPD], lung cancer, pulmonary fibrosis, lung contusion)...
January 3, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29279169/hepatocellular-carcinoma-treated-with-sorafenib-arterial-tumor-perfusion-in-dynamic-contrast-enhanced-ct-as-early-imaging-biomarkers-for-survival
#20
Yuko Nakamura, Tomokazu Kawaoka, Toru Higaki, Wataru Fukumoto, Yukiko Honda, Makoto Iida, Chikako Fujioka, Masao Kiguchi, Hiroshi Aikata, Kazuaki Chayama, Kazuo Awai
OBJECTIVES: To investigate whether hepatic perfusion CT yields early imaging biomarkers predictive of the prognosis of hepatocellular carcinoma (HCC) patients treated with sorafenib. METHODS: We evaluated 36 HCC patients who underwent hepatic perfusion CT before- and one week after sorafenib therapy. We measured arterial and portal perfusion in the hepatic tumor and liver parenchyma [(AP)(PP)tumor ], [(AP)(PP)liver ]. The perfusion ratio was calculated by dividing the post- by the pre-sorafenib value...
January 2018: European Journal of Radiology
keyword
keyword
110256
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"