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106 Result(s)
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Article
Dynamic contrast-enhanced and diffusion-weighted MRI for early detection of tumoral changes in single-dose and fractionated radiotherapy: evaluation in a rat rhabdomyosarcoma model
We aimed to examine different intratumoral changes after single-dose and fractionated radiotherapy, using diffusion-weighted (DW) and dynamic contrast-enhanced (DCE) MRI in a rat rhabdomyosarcoma model. Four W...
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Article
Additional value of PET-CT in the staging of lung cancer: comparison with CT alone, PET alone and visual correlation of PET and CT
Integrated positron emission tomography (PET) and computed tomography (CT) is a new imaging modality offering anatomic and metabolic information. The purpose was to evaluate retrospectively the accuracy of int...
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Article
Evaluation of the diagnostic value of a computed radiography system by comparison of digital hard copy images with screen–film mammography: results of a prospective clinical trial
The purpose of the study was to determine prospectively the diagnostic value of a computed radiography (CR) system by comparing mammographic hard copy images with screen–film mammography (SFM). A series of 100...
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Chapter and Conference Paper
Initial Results of the Daily Quality Control of Medical Screen Devices Using a Dynamic Pattern in a Digital Mammography Environment
In digital mammography it is of utmost importance that the quality of screen devices is checked on a regularly basis. The EUREF guidelines propose to do this daily using the AAPMtg18-QC pattern. In this paper ...
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Chapter and Conference Paper
Contrast Threshold of 4 Full Field Digital Mammography Systems Using Different Measurement Methods
We compared three conspicuity tests applied to four full field digital mammography (FFDM) systems. The tests included: 1) the calculation of noise equivalent quanta (NEQ); 2) contrast-detail analysis with the ...
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Article
A review of the general aspects of radiofrequency ablation
As an alternative to standard surgical resection for the treatment of malignant tumors, radiofrequency ablation (RFA) has rapidly evolved into the most popular minimally invasive therapy. To help readers gain ...
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Article
Patient acceptance for CT colonography: what is the real issue?
The aim of this study was to evaluate the discomfort associated with CT colonography compared with colonoscopy and bowel purgation cleansing, and to evaluate patient preference between CT colonography and col...
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Article
Lymph node metastases from head and neck squamous cell carcinoma: MR imaging with ultrasmall superparamagnetic iron oxide particles (Sinerem MR) – results of a phase-III multicenter clinical trial
The aim of this study was to compare the clinical usefulness of ultrasmall superparamagnetic iron oxide (USPIO) MR contrast media (Sinerem, Guerbet Laboratories, Aulnay-sous-Bois, France) with precontrast MRI...
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Article
Intracoronary delivery of Gd-DTPA and Gadophrin-2 for determination of myocardial viability with MR imaging
The aim of this study was to compare intracoronary (i. c.) administration of Gadophrin-2, a necrosis-avid contrast agent (NACA), and nonspecific agent Gd-DTPA for determination of myocardial viability (MV) in...
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Article
Postoperative retroperitoneal hemorrhage due to a bleeding ureteric artery: treatment by transcatheter embolization
We report a case of a postoperative retroperitoneal haemorrhage due to an iatrogenic perioperative injury of an ureteric artery. Transcatheter embolization using microparticles stopped the bleeding and the pa...
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Article
Sinochoanal polyp and its variant, the angiomatous polyp: MRI findings
The angiomatous polyp corresponds to the vascular compromised nasochoanal part of a sinochoanal polyp. We describe the MRI characteristics of such lesions in four patients. All patients had an angiomatous pol...
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Chapter
Magnetic Resonance Imaging
In this chapter, multiple MR techniques and devices that can be used for imaging of soft tissue tumors will be explained and discussed. The chapter is subdivided into two parts. Part 1 provides an overview of ...
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Article
Magnetic resonance imaging in the assessment of urologic disease: an all-in-one approach
The aim of this study was to evaluate an “all-in-one” MR procedure to examine the kidneys, the renal vascular supply and renal perfusion, and the urinary tract. In 64 patients (58 with urologic disease and 6 ...
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Article
Multiple small pseudoaneurysms complicating pancreatitis: angiographic diagnosis and transcatheter embolization
We report a case of retroperitoneal hemorrhage due to multiple, small pseudoaneurysms complicating a chronic alcoholic pancreatitis. Cross-sectional imaging with CT and US could not clearly depict these vascu...
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Article
A novel “cooled-wet” electrode for radiofrequency ablation
In the light of growing demands for improved applicability of radiofrequency ablation (RFA), recently we have developed a novel “cooled-wet” electrode by taking the advantages of both internally cooled and sa...
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Article
Treatment of VX2 liver tumor in rabbits with “wet” electrode mediated radio-frequency ablation
Radio-frequency ablation (RFA) has been considered as an alternative therapy for liver tumors. A “wet” electrode with interstitial infusion of hypertonic saline was tested for the RFA of liver tumor in rabbit...
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Article
Polymeric prodrugs of antibiotics with improved efficiency
Macromolecular prodrugs of the antibiotic norfloxacin were prepared by coupling the drug via a peptide spacer onto a mannosylated dextran. The tetrapeptide gly-phe-gly-gly-gly-OMe was selected as substrate for...
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Article
Transcatheter embolization of hepatic arteriovenous fistulas in Rendu-Osler-Weber disease: a case report and review of the literature
A patient with hereditary hemorrhagic telangiectasia and diffuse intrahepatic arteriovenous fistulas developed secondary high-output ventricular failure and pulmonary hypertension. A serial staged hepatic art...
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Article
Motion-responsive regions of the human brain
Functional magnetic resonance imaging was used to map motion responsive regions of the human brain by contrasting passive viewing of moving and stationary randomly textured patterns. Regions were retained as m...
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Article
MRI of non-ischemic vascular disease: aneurysms and vascular malformations
Due to flow-void phenomena, MRI is of great value in the demonstration of cerebral aneurysms and vascular malformations as well as of related parenchymal changes and hemorrhagic complications. Magnetic resona...