Pulmonary Insufficiency: Advantage of Pulmonary Regurgitation Volume Versus Pulmonary Regurgitation Fraction in a Congenital Heart Disease Mixed Population
The objective of this study was to compare the use of pulmonary regurgitation volume (PRV) or indexed PRV (PRVi) with that of pulmonary regurgitation fraction (PRF) in the assessment of patients with pulmonary regurgitation (PR) undergoing cardiac magnetic resonance (CMR) imaging.
Materials and Methods:
CMR of 176 patients with PR were retrospectively evaluated. Their right ventricular diastolic (end-diastolic volume index [EDVi]) and systolic (end-systolic volume index) volume indexes, stroke volume, and ejection fraction were obtained from cine CMR sequences, whereas phase-contrast flow sequences were analyzed to obta...
Source: Journal of Thoracic Imaging - October 23, 2019 Category: Radiology Tags: Original Articles Source Type: research
Pulmonary Vascular Morphology Associated With Gas Exchange in Systemic Sclerosis Without Lung Fibrosis
Purpose:
Gas exchange in systemic sclerosis (SSc) is known to be affected by fibrotic changes in the pulmonary parenchyma. However, SSc patients without detectable fibrosis can still have impaired gas transfer. We aim to investigate whether pulmonary vascular changes could partly explain a reduction in gas transfer of SSc patients without fibrosis.
Materials and Methods:
We selected 77 patients whose visual computed tomography (CT) scoring showed no fibrosis. Pulmonary vessels were detected automatically in CT images, and their local radii were calculated. The frequency of occurrence for each radius was calculated, an...
Source: Journal of Thoracic Imaging - October 23, 2019 Category: Radiology Tags: Original Articles Source Type: research
Evaluation of Vascular Parameters in Patients With Pulmonary Thromboembolic Disease Using Dual-energy Computed Tomography
Purpose:
The purpose of this study was to evaluate patterns of vascular and lung parenchymal enhancement in patients with suspected chronic thromboembolic pulmonary hypertension (CTEPH) and in those with acute pulmonary embolism (PE) and compare those two groups.
Materials and Methods:
We retrospectively studied 186 thoracic DECT studies referred for evaluation of CTEPH or pulmonary hypertension. A total of 80 of these patients had a negative scan (control group), 13 had acute PE, and 53 had chronic thromboembolic disease (CTED)/CTEPH. Five different DECT-based parameters were evaluated that highlight patterns of vasc...
Source: Journal of Thoracic Imaging - October 23, 2019 Category: Radiology Tags: Original Articles Source Type: research
Radiographic Manifestations of Diffuse Pulmonary Alveolar Derecruitment
Pulmonary alveolar derecruitment is a process of alveolar collapse that occurs in critically ill patients. While the entity and its physiological manifestations are described in the anesthesiology and critical care literature, the radiographic manifestations of alveolar derecruitment have not yet been thoroughly described. This phenomenon can have a similar appearance to pulmonary edema; however, patients often have severe intravascular volume depletion. As the treatment for these 2 entities is essentially contradictory, it is important to be familiar with alveolar derecruitment and consider it as a differential diagnosis ...
Source: Journal of Thoracic Imaging - October 23, 2019 Category: Radiology Tags: Original Articles Source Type: research
Extent of Intraprotocol and Intersite Variability of Thoracic Magnetic Resonance Acquisition Times at a Large Quaternary Institution: MR Technologist Insights as to Its Causes
Purpose:
The purpose of this study was to describe Thoracic magnetic resonance (MR) acquisition time (AT) variability, associations, and technologist insights as to its causes at a large quaternary institution, by MR protocol and imaging site.
Materials and Methods:
A retrospective review of our 2017 QI database of 1.5 T MR imaging ATs for adults 19 years and above at the main hospital and outpatient (OPT) satellites was performed for all 5 Thoracic MR protocols. Summary statistics were calculated for ATs. Multivariable linear regression was adjusted for age, sex, body mass index, time of examination relative to shi...
Source: Journal of Thoracic Imaging - October 23, 2019 Category: Radiology Tags: Original Articles Source Type: research
Errors in Interpretation of Magnetic Resonance Imaging for Thymic Lesions
Conclusions:
Although atypical or misleading imaging features are uncommon in TEN and thymic cysts, they do occur and may lead to diagnostic error. We suggest that lesions with a T2 signal less than simple fluid and without enhancement on postcontrast images undergo follow-up imaging to confirm a benign diagnosis. (Source: Journal of Thoracic Imaging)
Source: Journal of Thoracic Imaging - October 23, 2019 Category: Radiology Tags: Original Articles Source Type: research
Magnetic Resonance Imaging for the Follow-up of Treated Thymic Epithelial Malignancies
Conclusion:
MRI is an alternative option to follow-up patients after treatment for TEM. However, for those with metallic sternotomy wires, we recommend alternating the follow-up with CT as well. (Source: Journal of Thoracic Imaging)
Source: Journal of Thoracic Imaging - October 23, 2019 Category: Radiology Tags: Original Articles Source Type: research
Proximal Interruption of the Pulmonary Artery
No abstract available (Source: Journal of Thoracic Imaging)
Source: Journal of Thoracic Imaging - August 24, 2019 Category: Radiology Tags: Web Exclusive Content: Letters to the Editor Source Type: research
Proximal Interruption of the Pulmonary Artery and Unilateral Pulmonary Vein Atresia
No abstract available (Source: Journal of Thoracic Imaging)
Source: Journal of Thoracic Imaging - August 24, 2019 Category: Radiology Tags: Web Exclusive Content: Letters to the Editor Source Type: research
Reducing Routine Chest Radiographs in the Intensive Care Unit
No abstract available (Source: Journal of Thoracic Imaging)
Source: Journal of Thoracic Imaging - August 24, 2019 Category: Radiology Tags: Web Exclusive Content: Research Letters Source Type: research
Incidence of Pulmonary Embolism in Sickle Cell Anemia Patients Undergoing Computed Tomography Pulmonary Angiography in the Emergency Department
No abstract available (Source: Journal of Thoracic Imaging)
Source: Journal of Thoracic Imaging - August 24, 2019 Category: Radiology Tags: Web Exclusive Content: Research Letters Source Type: research
Intracavitary Coronary Artery: An Unusual Coronary Anomaly
Conclusions:
Although rare, our study suggests that ICCA may be more common than previously described. Its presence is important to communicate to clinicians prior to invasive cardiac procedures to prevent potentially catastrophic outcomes. (Source: Journal of Thoracic Imaging)
Source: Journal of Thoracic Imaging - August 24, 2019 Category: Radiology Tags: Web Exclusive Content: Original Article Source Type: research
Smoke: How to Differentiate Flow-related Artifacts From Pathology on Thoracic Computed Tomographic Angiography
Nonuniform contrast opacification of vasculature is frequently encountered on thoracic computed tomographic angiography. The purpose of this pictorial essay is to discuss the appearance of, and factors underlying mixing artifacts, which we term “smoke.” We provide an approach to distinguish it from pathology including pulmonary embolism, aortic dissection, and thrombus. Smoke results from a combination of technical factors, abnormal physiology, or inflow of unopacified blood. Smoke produces ill-defined filling defects that may be confidently diagnosed in many cases if these fundamentals are applied. (Source: Journal of Thoracic Imaging)
Source: Journal of Thoracic Imaging - August 24, 2019 Category: Radiology Tags: Web Exclusive Content: Pictorial Essays Source Type: research
The Azygos Vein From A to Z
Congenital and acquired abnormalities of the azygos vein can affect its size and position. Alteration of contrast material flow dynamics of the azygos vein on computed tomography can be an indication of superior vena cava obstruction. Recognition and accurate characterization of abnormalities of the azygos vein on imaging studies is critical to facilitate prompt diagnosis and direct workup when necessary. The main purpose of this article is to illustrate and describe the radiologic features of various congenital and acquired abnormalities affecting the azygos venous system. (Source: Journal of Thoracic Imaging)
Source: Journal of Thoracic Imaging - August 24, 2019 Category: Radiology Tags: Web Exclusive Content: Pictorial Essays Source Type: research
Imaging Spectrum of Double-Outlet Right Ventricle on Multislice Computed Tomography
Double-outlet right ventricle is a complex congenital heart disease that encompasses various common and rare subtypes. Surgical management of these patients needs to be individualized owing to extremely variable morphology and hemodynamics. Imaging plays a crucial role in determination and characterization of outflow tract morphology. The assessment of ventricular septal defect routability with identification of associated anomalies has therapeutic implications in these patients. Multislice computed tomography with advanced 3-dimensional postprocessing techniques and dose-reduction strategies is invaluable in defining the ...
Source: Journal of Thoracic Imaging - August 24, 2019 Category: Radiology Tags: Web Exclusive Content: Pictorial Essays Source Type: research
