Performance of a Deep Neural Network Algorithm Based on a Small Medical Image Dataset: Incremental Impact of 3D-to-2D Reformation Combined with Novel Data Augmentation, Photometric Conversion, or Transfer Learning
In conclusion, TL enhances performance of a DNN algorithm from a small volumetric dataset after proposed 3D-to-2D reformatting, but additive gain is achieved with application of either GCC to APV or the proposed novel MPV technique for DA.
ConclusionsTemporary arterial flow redistribution using a retrievable coil was feasible in the healthy pig model and could be applicable for endovascular procedures in which superselection is difficult or unavailable.
ConclusionLL/MLD4, MLA, MLD, the degree of luminal diameter stenosis, CCO, RI, and %APV derived from cCTA can support the detection of hemodynamically significant coronary stenosis as compared with iFR®, with LL/MLD4 showing the greatest discriminatory power.
Authors: Sobrinho G, Ministro A, Silva A, Pedro L Abstract Renal artery aneurysms are rare. They are most commonly degenerative, congenital or due to medial fibroplasia. Proximal aneurysms can be repaired by endovascular and in-situ surgical techniques. However, aneurysms of the distal renal artery and its branches require ex-vivo surgical repair, also known as auto-transplantation: the kidney is removed, dissected and reconstructed in cold ischemia, and put back in place. A 69-year-old woman, with hypertension, presented with bilateral renal artery aneurysms with a diameter of 3.4 cm on the rig...
AbstractWe systematically review the potential role of left atrial (LA) size, evaluated at computed tomography angiography (CTA) in patients with acute pulmonary embolism (PE), as a new parameter of PE severity. A literature search based on PubMed (MEDLINE), Scopus, Cochrane library and Google Scholar databases was performed to locate previous published investigations reporting data on the severity of acute PE based on the evaluation of LA size (either volume, diameter or area). Six studies, corresponding to a total of 990 patients, published between 2012 and 2019 were included into the analysis. The severity of acute PE, ...
ConclusionThe findings of this study demonstrate variability in CTPA ordering patterns and diagnostic yields among physicians working within the same clinical environment. There is some suggestion that those physicians who order disproportionately higher numbers of CTPAs have lower diagnostic yields.
Visually estimated angiographic V-RESOLVE score was developed as a simple and accurate prediction tool for side branch (SB) occlusion in patients undergoing coronary bifurcation intervention. Data on the use of coronary computed tomography angiography (coronary CTA) for guiding percutaneous coronary intervention in bifurcation lesions is scarce.
The objective of this study is to establish normal reference values for RVMDV.
ConclusionCAC scores collected simultaneously with MPI improve the detection of obstructive coronary artery disease in patients without a history of coronary revascularization.
Conclusions: The "defective B1" type of bifurcated right upper lobe (RUL) bronchus is relatively rare. A pre-operative understanding of its anatomical features, especially the vascular variation patterns, may be helpful for completing a satisfactory segmentectomy. 3D-CTBA is a powerful tool, allowing a better understanding of the pulmonary anatomy in each patient before and during surgical procedures. PMID: 31737306 [PubMed]
Here, we describe a case of giant cell arteritis (GCA) simultaneously diagnosed with chronic subdural hematoma. In this case, head to chest computed tomography angiography was useful for the diagnosis and treatment of GCA. AbstractHere, we describe a case of giant cell arteritis (GCA) simultaneously diagnosed with chronic subdural hematoma. In this case, head to chest computed tomography angiography was useful for the diagnosis and treatment of GCA.