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Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology

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https://www.readbyqxmd.com/read/28302592/spectral-detector-ct-for-cardiovascular-applications
#1
Prabhakar Rajiah, Suhny Abbara, Sandra Simon Halliburton
Spectral detector computed tomography (SDCT) is a novel technology that uses two layers of detectors to simultaneously collect low and high energy data. Spectral data is used to generate conventional polyenergetic images as well as dedicated spectral images including virtual monoenergetic and material composition (iodine-only, virtual unenhanced, effective atomic number) images. This paper provides an overview of SDCT technology and a description of some spectral image types. The potential utility of SDCT for cardiovascular imaging and the impact of this new technology on radiation and contrast dose are discussed through presentation of initial patient studies performed on a SDCT scanner...
March 17, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28287073/validation-of-a-ct-guided-intervention-robot-for-biopsy-and-radiofrequency-ablation-experimental-study-with-an-abdominal-phantom
#2
Hyung Jin Won, Namkug Kim, Guk Bae Kim, Joon Beom Seo, Hongho Kim
PURPOSE: We aimed to evaluate the accuracy of a needle-placement robot for biopsy and radiofrequency ablation on an abdominal phantom. METHODS: A master-slave robotic system has been developed that includes a needle-path planning system and a needle-inserting robot arm with computed tomography (CT) and CT fluoroscopy guidance. For evaluation of its accuracy in needle placement, a commercially available abdominal phantom (Model 057A; CIRS Inc.) was used. The liver part of the phantom contains multiple spherical simulated tumors of three different size spheres...
March 13, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28287072/radiation-dose-reduction-comparative-assessment-of-publication-volume-between-interventional-and-diagnostic-radiology
#3
Jan Hansmann, Thomas Henzler, Ron C Gaba, John N Morelli
PURPOSE: We aimed to quantify and compare awareness regarding radiation dose reduction within the interventional radiology and diagnostic radiology communities. METHODS: Abstracts accepted to the annual meetings of the Society of Interventional Radiology (SIR), the Cardiovascular and Interventional Radiological Society of Europe (CIRSE), the Radiological Society of North America (RSNA), and the European Congress of Radiology (ECR) between 2005 and 2015 were analyzed using the search terms "interventional/computed tomography" and "radiation dose/radiation dose reduction"...
March 13, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28256449/evaluation-of-ct-vascularization-patterns-for-survival-prognosis-in-patients-with-hepatocellular-carcinoma-treated-by-conventional-tace
#4
Davut B Hasdemir, Lukas Aguirre Dávila, Nora Schweitzer, Bernhard C Meyer, Armin Koch, Arndt Vogel, Frank Wacker, Thomas Rodt
PURPOSE: Transarterial chemoembolization (TACE) is an established treatment for intermediate stage hepatocellular carcinoma (HCC). The aim of this retrospective study was to evaluate the power of lesion vascularization criteria based on computed tomography for prognosis of overall survival before initiation of treatment. METHODS: A total of 59 patients with intermediate stage HCC treated with TACE as first-line treatment were retrospectively evaluated. TACE procedures were performed using doxorubicin, cisplatin, and lipiodol...
March 3, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28223261/use-of-transabdominal-ultrasound-guided-transjugular-portal-vein-puncture-on-radiation-dose-in-transjugular-intrahepatic-portosystemic-shunt-formation
#5
Aniket N Tavare, Andrew Wigham, Anastasia Hadjivassilou, Abdulrahman Alvi, Anthie Papadopoulou, Antony Goode, Nick Woodward, David Patch, Dominic Yu, Neil Davies
PURPOSE: Transjugular intrahepatic portosystemic shunt (TIPS) creation is used to treat portal hypertension complications. Often the most challenging and time-consuming step in the procedure is the portal vein (PV) puncture. TIPS procedures are associated with prolonged fluoroscopy time and high patient radiation exposures. We measured the impact of transabdominal ultrasound guidance for PV puncture on duration of fluoroscopy time and dose. METHODS: We retrospectively analyzed the radiation dose for all TIPS performed over a four-year period with transabdominal ultrasound guidance for PV puncture (n=212, with 210 performed successfully and data available for 206); fluoroscopy time, dose area product (DAP) and skin dose were recorded...
February 22, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28209556/palliation-of-malignant-gastroduodenal-obstruction-fluoroscopic-metallic-stent-placement-with-different-approaches
#6
Elif Bulut, Türkmen Çiftçi, Okan Akhan, Devrim Akıncı
PURPOSE: We aimed to evaluate the safety and effectiveness of fluoroscopy-guided gastroduodenal metallic stent placement with different approaches in malignant obstruction. METHODS: We retrospectively assessed 53 patients (33 men and 20 women; mean age, 58.7±15 years) who underwent stent placement between February 2004 and April 2014. All patients had unresectable tumors. The most common causes of obstruction were gastric (38%) and pancreatic cancers (36%). Uncovered self-expandable metallic stents (SEMS) were placed under fluoroscopic guidance...
February 17, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28206951/missed-lung-cancer-when-where-and-why
#7
Annemilia Del Ciello, Paola Franchi, Andrea Contegiacomo, Giuseppe Cicchetti, Lorenzo Bonomo, Anna Rita Larici
Missed lung cancer is a source of concern among radiologists and an important medicolegal challenge. In 90% of the cases, errors in diagnosis of lung cancer occur on chest radiographs. It may be challenging for radiologists to distinguish a lung lesion from bones, pulmonary vessels, mediastinal structures, and other complex anatomical structures on chest radiographs. Nevertheless, lung cancer can also be overlooked on computed tomography (CT) scans, regardless of the context, either if a clinical or radiologic suspect exists or for other reasons...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28185999/ct-findings-of-pulmonary-tuberculosis-and-tuberculous-pleurisy-in-diabetes-mellitus-patients
#8
Jihyun Kim, In Jae Lee, Joo Hee Kim
PURPOSE: We aimed to assess computed tomography (CT) findings of pulmonary tuberculosis (TB) and TB pleurisy in diabetes mellitus (DM) patients and to evaluate the effect of duration of DM on radiologic findings of pulmonary TB and TB pleurisy. METHODS: Ninety-three consecutive patients diagnosed as active pulmonary TB with underlying DM were enrolled in our study. As a control group, 100 pulmonary TB patients without DM were randomly selected. TB patients with DM were subdivided into two subgroups depending on diabetes duration of ≥10 years or <10 years...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28185998/study-on-the-effect-of-chemoembolization-combined-with-microwave-ablation-for-the-treatment-of-hepatocellular-carcinoma-in-rats
#9
Thomas Josef Vogl, Jun Qian, Andreas Tran, Elsie Oppermann, Nagy N Naguib, Huedayi Korkusuz, Nour Eldin A Nour Eldin, Wolf Otto Bechstein
PURPOSE: We aimed to evaluate the combining effects of transarterial chemoembolization (TACE) and open local thermal microwave ablation in a hepatocellular carcinoma animal model. METHODS: Tumor cubes were implanted into the liver of 30 male inbred ACI rats. Groups of 10 animals were treated at 13 days (TACE or microwave ablation) and 16 days (microwave ablation) postimplantation with combined therapy of TACE (0.1 mg mitomycin C; 0.1 mg iodized oil; 5.0 mg degradable starch microspheres) and microwave ablation (2450 Mhz; 45 s; 35 W) (study group A), TACE alone (control group B), or microwave ablation alone (control group C)...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28163256/preprocedural-mri-and-mra-in-planning-fibroid-embolization
#10
Cristina Maciel, Yen Zhi Tang, Anju Sahdev, António Miguel Madureira, Paulo Vilares Morgado
This pictorial review aims to discuss and illustrate the up-to-date use of preprocedural magnetic resonance imaging (MRI) in selecting patients and planning uterine artery embolization (UAE). The merits of magnetic resonance angiography (MRA) in demonstrating the pelvic vasculature to guide UAE are highlighted. MRI features of fibroids and their main differential diagnoses are presented. Fibroid characteristics, such as location, size, and enhancement, which may impact patient selection and outcome, are presented based on recent literature...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28093377/ten-year-experience-of-retrievable-inferior-vena-cava-filters-in-a-tertiary-referral-center
#11
George Tse, Trevor Cleveland, Stephen Goode
PURPOSE: A significant proportion of patients undergoing surgery have an increased incidence of acute pulmonary embolus (PE). We analyzed all patients who had a retrievable inferior vena cava (IVC) filter placed preoperatively for PE prophylaxis and investigated the long-term outcomes of the patients who did not have their filter removed. METHODS: Patients who underwent retrievable IVC filter insertion and attempted removal were identified from the radiology information systems database in a large tertiary referral university teaching hospital...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28089955/is-integrated-18f-fdg-pet-mri-superior-to-18f-fdg-pet-ct-in-the-differentiation-of-incidental-tracer-uptake-in-the-head-and-neck-area
#12
Benedikt Michael Schaarschmidt, Benedikt Gomez, Christian Buchbender, Johannes Grueneisen, Felix Nensa, Lino Morris Sawicki, Verena Ruhlmann, Axel Wetter, Gerald Antoch, Philipp Heusch
PURPOSE: We aimed to investigate the accuracy of 18F-fluorodeoxyglucose positron emission tomography/magnetic resonance imaging (18F-FDG PET/MRI) compared with contrast-enhanced 18F-FDG PET/computed tomography (PET/CT) for the characterization of incidental tracer uptake in examinations of the head and neck. METHODS: A retrospective analysis of 81 oncologic patients who underwent contrast-enhanced 18F-FDG PET/CT and subsequent PET/MRI was performed by two readers for incidental tracer uptake...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28089954/solid-pseudopapillary-neoplasm-of-the-pancreas-ct-imaging-features-and-radiologic-pathologic-correlation
#13
Gopinathan Anil, Junwei Zhang, Nawal Ebrahim Al Hamar, Min En Nga
PURPOSE: We aimed to evaluate the imaging features of solid pseudopapillary neoplasm (SPN) of the pancreas with an emphasis on radiologic-pathologic correlation. METHODS: Ten patients (all female; mean age, 32 years) with histologic or cytologic diagnosis of SPN encountered between January 2007 and December 2013 were included in this study. Preoperative computed tomography (CT) images were reviewed for location, attenuation, enhancement pattern, margin, shape, size, morphology, presence of capsule and calcification...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28082253/optimizing-care-for-the-obese-patient-in-interventional-radiology
#14
Dwight Aberle, Hearns Charles, Steven Hodak, Daniel O'Neill, Rahmi Oklu, Amy R Deipolyi
With the rising epidemic of obesity, interventional radiologists are treating increasing numbers of obese patients, as comorbidities associated with obesity preclude more invasive treatments. These patients are at heightened risk of vascular and oncologic disease, both of which often require interventional radiology care. Obese patients pose unique challenges in imaging, technical feasibility, and periprocedural monitoring. This review describes the technical and clinical challenges posed by this population, with proposed methods to mitigate these challenges and optimize care...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28082252/percutaneous-management-of-bile-duct-stones-in-children-results-of-12-cases
#15
Nevzat Özcan, Güven Kahrıman, Süreyya Burcu Görkem, Duran Arslan
PURPOSE: We aimed to evaluate the effectiveness of percutaneous transhepatic removal of bile duct stones in children. METHODS: The study included 12 pediatric patients (4 males, 8 females; age range, 1-16 years; mean age, 6.6 years) who underwent percutaneous transhepatic removal of bile duct stones between September 2007 and December 2015. Demographic data, patient symptoms, indications for interventions, technical and clinical outcomes of the procedure, and complications were retrospectively evaluated...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28074780/mri-directed-cognitive-fusion-guided-biopsy-of-the-anterior-prostate-tumors
#16
Ian G Murphy, Elaine NiMhurchu, Robert G Gibney, Colm J McMahon
PURPOSE: We aimed to evaluate the efficacy of magnetic resonance imaging (MRI)-directed cognitive fusion transrectal ultrasonography (TRUS)-guided anterior prostate biopsy for diagnosis of anterior prostate tumors and to illustrate this technique. METHODS: A total of 39 patients with previous negative TRUS biopsy, but high clinical suspicion of occult prostate cancer, prospectively underwent prostate MRI including diffusion-weighted imaging (DWI). Patients with a suspicious anterior lesion on MRI underwent targeted anterior gland TRUS-guided biopsy with cognitive fusion technique using sagittal probe orientation...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28067202/pulmonary-fibrosis-tissue-characterization-using-late-enhanced-mri-compared-with-unenhanced-anatomic-high-resolution-ct
#17
Lisa P Lavelle, Darragh Brady, Sinead McEvoy, David Murphy, Brian Gibney, Annika Gallagher, Marcus Butler, Fionnula Shortt, Marie McMullen, Aurelie Fabre, David A Lynch, Michael P Keane, Jonathan D Dodd
PURPOSE: We aimed to prospectively evaluate anatomic chest computed tomography (CT) with tissue characterization late gadolinium-enhanced magnetic resonance imaging (MRI) in the evaluation of pulmonary fibrosis (PF). METHODS: Twenty patients with idiopathic pulmonary fibrosis (IPF) and twelve control patients underwent late-enhanced MRI and high-resolution CT. Tissue characterization of PF was depicted using a segmented inversion-recovery turbo low-angle shot MRI sequence...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28050950/comparison-of-biexponential-and-monoexponential-dwi-in-evaluation-of-fuhrman-grading-of-clear-cell-renal-cell-carcinoma
#18
Lijuan Shen, Liangping Zhou, Xiaohang Liu, Xiaoqun Yang
PURPOSE: Clear cell renal cell carcinoma (ccRCC) is the most common primary malignant urologic tumor. The Fuhrman grading system is an independent indicator for aggressiveness and prognosis of ccRCC. We aimed to assess the possible diagnostic role of biexponentially and monoexponentially fitted signal attenuation for the Fuhrman grading. METHODS: A total of 33 patients with ccRCC underwent multiple b values (0, 20, 50, 100, 150, 250, 400, 600, 800, 1000 s/mm2) diffusion-weighted imaging (DWI)...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28029638/diagnostic-accuracy-and-safety-of-ct-guided-fine-needle-aspiration-biopsy-of-pulmonary-lesions-with-non-coaxial-technique-a-single-center-experience-with-442-biopsies
#19
Çağlar Uzun, Zehra Akkaya, Ebru Düşünceli Atman, Evren Üstüner, Elif Peker, Başak Gülpınar, Atilla Halil Elhan, Koray Ceyhan, Kayhan Çetin Atasoy
PURPOSE: We aimed to evaluate the diagnostic accuracy and safety of computed tomography (CT)-guided biopsy of pulmonary lesions with fine needle aspiration (FNA) using non-coaxial technique. METHODS: We analyzed 442 patients who underwent CT-guided lung biopsy with FNA and non-coaxial technique to determine the diagnostic outcomes, complication rates, and independent risk factors for diagnostic failure and pneumothorax. RESULTS: Diagnostic accuracy, sensitivity, and specificity were 97...
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/27924778/evaluation-of-anterior-mediastinal-solid-tumors-by-ct-perfusion-a-preliminary-study
#20
Selim Bakan, Sedat Giray Kandemirli, Atilla Süleyman Dikici, Ezel Erşen, Onur Yıldırım, Cesur Samancı, Şebnem Batur, Deniz Çebi Olgun, Fatih Kantarcı, Canan Akman
PURPOSE: We aimed to assess the role of computed tomography (CT) perfusion in differentiation of thymoma from thymic hyperplasia, lymphoma, thymic carcinoma, and lung cancer invading anterior mediastinum. METHODS: In this study, 25 patients with an anterior mediastinal lesion underwent CT perfusion imaging from January 2015 to February 2016. Diagnoses included thymoma (n=7), thymic hyperplasia (n=8), lymphoma (n=4), thymic carcinoma (n=3), and invasive lung cancer (n=3)...
January 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
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