Publications by authors named "J G Thalhammer"
We aim to optimize the binary detection of Chronic Obstructive Pulmonary Disease (COPD) based on emphysema presence in the lung with convolutional neural networks (CNN) by exploring manually adjusted versus automated window-setting optimization (WSO) on computed tomography (CT) images. 7194 contrast-enhanced CT images (3597 with COPD; 3597 healthy controls) from 78 subjects were selected retrospectively (01.2018-12.
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- Hematological involvement (HI) is a serious condition associated with Langerhans cell histiocytosis (LCH), and is defined by low blood cell counts indicating potential life-threatening complications.
- A study of 2,313 children with LCH revealed that about 331 developed HI, with a distinction between mild (MHI) and severe HI (SHI), each showing different health outcomes and survival rates over 10 years.
- Recent advances in treatment have improved mortality rates, particularly with combination therapies and targeted treatments, sparking discussions about refining HI definitions to better inform treatment strategies.
Article Synopsis
- Researchers aimed to evaluate spleen stiffness measurement (SSM) as a standalone non-invasive test for clinically significant portal hypertension (CSPH) in patients with compensated advanced chronic liver disease (cACLD) and compare it to the existing ANTICIPATE±NASH model.
- The study involved 407 patients recruited from 16 expert centers in Europe, utilizing various non-invasive tests alongside hepatic venous pressure gradient measurements to assess CSPH probability.
- The findings indicated the potential for SSM to enhance diagnostic capabilities, as models were created to evaluate its effectiveness and discriminative ability compared to existing methods using binary logistic regression analysis.
Background: Computed tomography (CT) relies on the attenuation of x-rays, and is, hence, of limited use for weakly attenuating organs of the body, such as the lung. X-ray dark-field (DF) imaging is a recently developed technology that utilizes x-ray optical gratings to enable small-angle scattering as an alternative contrast mechanism. The DF signal provides structural information about the micromorphology of an object, complementary to the conventional attenuation signal.
View Article and Find Full Text PDFBackground Many clinically relevant fractures are occult on conventional radiographs and therefore challenging to diagnose reliably. X-ray dark-field radiography is a developing method that uses x-ray scattering as an additional signal source. Purpose To investigate whether x-ray dark-field radiography enhances the depiction of radiographically occult fractures in an experimental model compared with attenuation-based radiography alone and whether the directional dependence of dark-field signal impacts observer ratings.
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