R. T. Hoffmann's research while affiliated with Universitätsklinikum Carl Gustav Carus Dresden and other places
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Publications (23)
The majority of patients with neuroendocrine tumors (NET) develop liver metastases during the course of the disease, significantly impacting prognosis and quality of life.
Radiologically guided interventional therapies, such as thermal ablation, transarterial embolization (TAE)/chemoembolization (TACE), and selective internal radiotherapy (TARE), c...
Background
Lesions of the paravertebral mediastinum are rare, and knowledge of possible differential diagnoses is essential for clinical practice.
Objective/Methods
To review common lesions of the paravertebral mediastinum.
Results
The paravertebral mediastinum mainly includes fatty tissue and neurogenic structures. Imaging is commonly performed...
To evaluate the suitability of volume index measurement (VI) by either ultrasound (US) or computed tomography (CT) for the assessment of liver volume. Fifty-nine patients, 21 women, with a mean age of 66.8 ± 12.6 years underwent US of the liver followed immediately by abdominal CT. In US and CT imaging dorsoventral, mediolateral and craniocaudal li...
Background
Aortoiliac stenosis is common cause of peripheral arterial disease (PAD), which is particularly prevalent in older age (> 60 years) with a prevalence of 20%. In early stages (TASC [Trans-Atlantic Inter-Society Consensus] II A/B), these stenoses can be successfully treated by endovascular procedures. For more complex aortoiliac stenoses (...
To investigate the accuracy of liver diameters for estimation of liver size and to evaluate their application as tool for assessment of parenchymal liver disease. In the course of a population-based study, (SHIP) one thousand nine hundred thirty-nine volunteers underwent magnetic resonance imaging (MRI) of the liver including 3D gradient echo MRI s...
Background
Abdominal sarcomas are a heterogeneous group of rare soft tissue tumors and can be localized intraperitoneally or retroperitoneally. A pretherapeutic differentiated subtyping is essential for planning an individual, multimodal treatment concept in an interdisciplinary team of experts.Objective
The central aspects of histology acquisition...
Aim of this study was to investigate frequency, incidence and risk factors of liver cysts in the general population in a longitudinal survey. Cyst frequency was investigated in 607 adult volunteers (288 women, 319 men, mean age 55 years) using strong T2-weighted magnetic resonance imaging. Risk factors were investigated for occurrence, frequency an...
Aim
To evaluate the technical and clinical success of embolisation in patients with life-threatening spontaneous retroperitoneal haematoma (SRH) and to assess predictors of clinical outcome.
Materials and methods
Thirty patients (mean age: 71.9±9.8 years) with SRH underwent digital subtraction angiography (DSA). All patients received anticoagulant...
Background
Interventional radiology is still a young, but rapidly growing and increasingly differentiated branch of radiology. These methods are represented in the treatment options and guidelines for many different tumor diseases.
Objective
This review covers diagnostic interventional procedures such as image-guided biopsy; curative thermoablativ...
New protocols for coronary computed tomography angiography (CCTA) could lower the radiation dose for patients but influence the image quality. To compare image quality and radiation exposure in step-and-shoot CCTA and high-pitch spiral CCTA. Fifty-nine pairs of patients matched for weight, height, sex and heart rate were included in this study (74...
AIM
To investigate the accuracy of ultrasonography in the assessment of hepatic steatosis using magnetic resonance imaging (MRI) as standard of reference and to explore the influence of additional hepatic iron overload.
MATERIAL AND METHODS
A total of 2,783 volunteers (1,442 women, 1,341 men; mean age, 52.3±13.8 years) underwent confounder-correct...
Clinical issue
Percutaneous transhepatic biliary and gall bladder interventions play an important role in the diagnosis and therapy of biliary tract diseases.
Performance
With technical success rates up to 99% as well as complications rates up to a maximum of 26% they showed good results. Indications were opacification of the biliary tree as well...
Purpose:
To investigate factors influencing liver size and to determine reference values of liver volume (LV) for healthy subjects.
Methods:
2773 volunteers underwent magnetic resonance imaging (MRI) of the liver in the setting of the population based Study of Health in Pomerania. Based on measurement of maximum diameters in three orientations,...
Depending on the type and acuteness, diseases of the aorta can be imaged by a variety of techniques. Modalities and quality of imaging have developed rapidly in recent years. In combination with the clinical assessment of patients, the results obtained by imaging determine the further management. They not only establish the underlying diagnosis but...
Hepatocellular carcinoma (HCC) is one of the most frequent malignancies worldwide. Besides liver transplantation, which is only feasible in few patients and surgical resection, the scope of potential treatment options has considerably expanded in recent years. Thermoablative therapies are now well established in early HCC due to the low rate of com...
Unlabelled:
CLINICAL ISSUE OF THORACIC ANEURYSMS: Aneurysms are among the most common diseases affecting the thoracic aorta, with a continuous increase in incidence over the recent decades. The main cause of thoracic aneurysms is atherosclerosis, which, due to the frequent lack of major symptoms and the potentially lethal complications such as rup...
Citations
... 3D visualization of liver vividly portraying the presence of healthy and pathological parenchyma of liver followed by volumetric calculation channelize the surgical pre-planning process as a part of treatment procedure to arrive at the optimal resection strategy [8]. Additionally, any increase in liver volume is used as an indicator in the diagnosis of liver pathologies like fatty liver and steatohepatitis [9]. A few works on 3D volumetry analysis of liver and other organs are available in literature. ...
... During development, liver size increases with increasing age, averaging a 5 cm span at 5 years, and attaining an adult size average of about 8.6 cm (male and female) from age 15, with an average volume of 1624 cm 3 [11] and weighing about 1.5 kg. However, the size depends on several factors including age, sex, body size, shape, and to what extent the liver is healthy [ 13,14]. ...
... The prevalence of simple hepatic cysts has been shown to be increasingly common with age [14][15][16][17][18][19] . In addition, according to the study of autosomal dominant polycystic kidney disease (ADPKD), the total hepatic cyst volume increases with age 18 . ...
... Abdominal wall hematomas (AWHs) are characterized by the extravasation of blood inside the muscle layers of the abdominal wall [1][2][3]. ...
... 9 MRI disadvantages are lack of widespread PDFF sequence software availability and cost. 10 Steatosis can be qualitatively graded as mild, moderate or severe based on a combination of ultrasound features: liver-kidney relative echogenicity, vessel wall blurring, ultrasound beam attenuation, presence or absence of focal fat sparing & diaphragm visualisation. 11 However, ultrasound grading of steatosis is subjective, with limited reproducibility and consistency, with 60% -94% sensitivity and 66% -97% specificity for the detection of hepatic steatosis. ...
... Therefore, a scan mode with comparably satisfied image quality and lower radiation dose is particularly important. Compared with acquisition using ultra-high-resolution mode [16,17], which most likely suffers from lower z-coverage and lack of spectral information or other scan modes (i.e., prospective ECG-triggered sequence mode and retrospective ECG-gated helical mode), PCD-CCTA with high-pitch Flash mode provides good image quality with a significantly lower radiation dose and simultaneous spectral information [27,28], especially for patients with low plaque burden. With increasing image quality, possibly due to higher temporal resolution in the third-generation dual-source CT [29] and higher photon efficiency of PCD [9], the threshold above which HR starts impacting diagnostic quality is also increased in CCTA with high-pitch Flash mode [30][31][32]. ...
... However, until recently, the manual annotation required to make true volumetric measurements of the liver from CT and MRI images has been extremely time consuming. Imaging studies tended to rely on more easily measured metrics, such as liver span or diameter [44,45], or calculation of volume indices from the measurement of multiple diameters [46]. Consequently, these approaches limit in depth morphometric assessment and only provide information associated with overall changes to liver size or volume. ...