Publications by authors named "Hyejin Je"
Objective: To compare qualitative features and quantitative parameters of 2 contrast agents (sulfur hexafluoride microbubbles [SHM; SonoVue] and perfluorobutane [PFB; Sonazoid]) for performance of contrast-enhanced ultrasonography (CEUS) of the pancreas in dogs.
Animals: 8 healthy Beagles.
Procedures: In a crossover study design, CEUS of the pancreas was performed twice in each dog, once with SHM and once with PFB, in random order with at least 3 days between examinations.
Objective: To investigate radiographic variables for correlation with splenic size as estimated with CT in cats.
Animals: 38 healthy adult cats.
Procedures: The width and height of the splenic head and total length, segmental length, and width of the spleen were measured on radiographic and CT images obtained from 10 cats in prospective, exploratory experiments.
Computed tomography (CT) perfusion can analyze tissue perfusion and quantitative parameters, including blood flow, blood volume, and transit time. CT perfusion has been used for evaluating split renal function. However, its applicability in veterinary medicine was not validated.
View Article and Find Full Text PDFObjective: To evaluate the effect of slice thickness on CT perfusion analysis of the pancreas in healthy dogs.
Animals: 12 healthy Beagles.
Procedures: After precontrast CT scans, CT perfusion scans of the pancreatic body were performed every second for 30 seconds by sequential CT scanning after injection of contrast medium (iohexol; 300 mg of 1/kg) at a rate of 3 mL/s.
Shear wave elastography (SWE) induces lateral shear wave through acoustic pulses of the transducer and evaluates tissue stiffness quantitatively. This study was performed to evaluate feasibility and reproducibility of two-dimensional shear wave elastography (2D SWE) for evaluation of tissue stiffness and to examine technical factors that affect shear wave speed (SWS) measurements in adult dogs. Nine healthy, 2 year-old, adult beagles with the median weight of 9.
View Article and Find Full Text PDFBackground: Computed tomography urography (CTU), based on the excretion of contrast medium after its injection, allows visualization of the renal parenchyma and the renal collecting system.
Objectives: To determine the optimal contrast medium dose allocation ratio to apply in split-bolus CTU in dogs.
Methods: This prospective, experimental, exploratory study used 8 beagles.
Article Synopsis
- The study explored hormonal and vascular changes in the canine prostate after castration to understand their impact on benign prostatic hyperplasia (BPH).
- Researchers compared hormone levels (testosterone, estrogen, DHT) and prostatic perfusion between normal dogs and those with varying degrees of BPH, noting significant differences in arterial inflow and DHT levels.
- The findings suggest that increased DHT levels are the primary cause of BPH, rather than vascular changes as previously thought, with a decrease in DHT and prostatic volume observed after castration.
Radiography is a standard diagnostic test for characterizing left heart enlargement in dogs however limited information is available on the effects of respiratory phases. This prospective and retrospective method comparison study investigated the respiratory effect on the size and shape of the left heart in dogs to determine the usefulness of expiratory radiographs to detect enlargements in the left atrium (LA) and left ventricle (LV). Thoracic radiographs taken at full inspiration and expiration were evaluated in 20 normal beagles and 100 dogs diagnosed with mitral regurgitation (MR).
View Article and Find Full Text PDFObjective: To investigate the diagnostic usefulness of split-bolus CT enterography in dogs.
Animals: 6 healthy Beagles.
Procedures: CT enterography was performed in all dogs in a nonrandomized crossover study design involving 3 techniques: a dual-phase technique and 2 techniques involving splitting of the administered contrast agent dose (ie, split technique and split-bolus tracking technique).