OBJECTIVES: To study the correlation between CT imaging features of acceleration and deceleration brain injury and injury degree. METHODS: A total of 299 cases with acceleration and deceleration brain injury were collected and divided into acceleration brain injury group and deceleration brain injury group according to the injury mechanism. Subarachnoid hemorrhage (SAH) and Glasgow coma scale (GCS), combined with skull fracture, epidural hematoma (EDH), subdural hematoma (SDH) and brain contusion on the same and opposite sides of the stress point were selected as the screening indexes. χ² test was used for primary screening, and binary logistic regression analysis was used for secondary screening. The indexes with the strongest correlation in acceleration and deceleration injury mechanism were selected. RESULTS: χ² test showed that skull fracture and EDH on the same side of the stress point; EDH, SDH and brain contusion on the opposite of the stress point; SAH, GCS were correlated with acceleration and deceleration injury (P<0.05). According to binary logistic regression analysis, the odds ratio (OR) of EDH on the same side of the stress point was 2.697, the OR of brain contusion on the opposite of the stress point was 0.043 and the OR of GCS was 0.238, suggesting there was statistically significant (P<0.05). CONCLUSIONS EDH on the same side of the stress point, brain contusion on the opposite of the stress point and GCS can be used as key indicators to distinguish acceleration and deceleration injury mechanism. In addition, skull fracture on the same side of the stress point, EDH and SDH on the opposite of the stress point and SAH were relatively weak indicators in distinguishing acceleration and deceleration injury mechanism.
Brain Contusion ; Brain Injuries/diagnostic imaging* ; Hematoma, Epidural, Cranial ; Hematoma, Subdural/etiology* ; Humans ; Logistic Models ; Skull Fractures/diagnostic imaging* ; Tomography, X-Ray Computed ; Wounds, Nonpenetrating/diagnostic imaging*

To explore the correlation between hematoma expansion within 24 hours of hypertensive intracerebral hemorrhage and signs on nonenhanced computed tomography(NECT). Methods The clinical data and CT images of 185 patients with hypertensive intracerebral hemorrhage were retrospectively analyzed.The differences in CT parameters were compared between the expansion group and the unexpanded group.Binary logistic regression analysis was performed on the indicators with statistical significance between the two groups to identify the potential correlation between CT parameters and hematoma expansion.The roles of blend sign,lobulation sign,and black hole sign in predicting early hematoma expansion were assessed. Results The CT quantitative data including initial volume,maximum diameter,minimum diameter,maximum CT value,mean CT value,difference between maximum diameter and minimum diameter showed no significant difference between these two group(all >0.05).CT qualitative data including blend sign,lobulation sign,and black hole sign were significantly different(<0.05)but the differences became not significant after the hematoma broke into the ventricles.Binary logistic regression analysis showed that blend sign,lobulation sign,and black hole sign were independent risk factors for early hematoma expansion,with sensitivity,specificity,positive predictive value,and negative predictive value of the combined signs and the early hematoma expansion calculated by the four-fold table method being 78.4%,59.0%,42.1%,and 87.8%,respectively,and the Youden index was 0.374.Its Youden index was closer to 1 than the blend sign,the black hole sign,and the lobulation sign. Conclusion The blend sign,lobulation sign,and black hole sign in NECT can be used to predict hematoma expansion within 24 hours after hypertensive cerebral hemorrhage.
Cerebral Hemorrhage ; diagnostic imaging ; Hematoma ; diagnostic imaging ; Humans ; Intracranial Hemorrhage, Hypertensive ; diagnostic imaging ; Retrospective Studies ; Tomography, X-Ray Computed

Objectives To investigate the morphologic characteristics of intramural hematoma (IMH) on CT angiography (CTA), and evaluate the possible correlation of serum C-reactive protein (CRP) with morphologic characteristics of IMH. Material and Methods Forty-two patients who were initially diagnosed as IMH by aortic CTA and also had serum CRP examination on the same day of CTA were enrolled in this retrospective study, including 30 males and 12 females, with the mean age of 61 ± 14 years old. The volumetric CT data were retrospectively processed and analyzed on post-processing workstation. Based on the thickness of IMH and the length-area curve, the cross-sectional area of true lumen and total vessel were measured, the hematoma-vessel ratio (HVR) was calculated. Imaging characteristics were compared between patients who had pathological elevated CRP (> 0.8 mg/dl) and those did not. Spearman correlation analyses of CRP level and morphological characteristics of IMH were performed, and the receiver operating characteristic (ROC) curve was used to evaluate the diagnostic validity of CRP. Results Of all 42 IMH patients, the mean serum CRP was 3.94 ± 4.71 mg/dl, and the mean HVR was 46.7%± 14.2%. HVR in patients with elevated CRP was significantly higher than those with normal CRP (49.7% ± 15.0% vs. 40.7% ± 10.5 %, P = 0.030). HVR was mildly correlated with CRP in all patients (r =0.48, P < 0.001). CRP levels differed neither between patients with Stanford type A and B (P = 0.207), nor between patients with and without intimal disruption (P = 0.230). To discriminate HVR > 47% (the mean value), the area under curve (AUC) were 0.700 (95% CI: 0.535-0.865) for CRP at a cutoff point of 3.55 mg/dl, with a sensitivity of 54.5% and a specificity of 90.0%. Conclusion CRP was mildly correlated with the severity of cross-sectional hematoma area of IMH, but not with Stanford types and the presence of intimal disruption.
Adult ; Aged ; Aged, 80 and over ; Aorta/pathology* ; C-Reactive Protein/metabolism* ; Computed Tomography Angiography ; Female ; Hematoma/diagnostic imaging* ; Humans ; Image Processing, Computer-Assisted ; Male ; Middle Aged ; ROC Curve ; Statistics, Nonparametric

Blunt traumatic injuries to the superior gluteal artery are rare in clinic. A majority of injuries present as aneurysms following penetrating trauma, fracture pelvis or posterior dislocation of the hip joint. We reported a rare case of superior gluteal artery pseudoaneurysm following blunt trauma presenting as large expanding right gluteal hematoma without any bony injury. The gluteal hematoma was suspected clinically, confirmed by ultrasound and the arterial injury was diagnosed by CT angiography that revealed a large right gluteal hematoma with a focal contrast leakage forming a pseudoaneurysm within the hematoma. Pseudoaneurysm arose from the superior gluteal branch of right internal iliac artery, which was successfully angioembolized. The patient was discharged on day 4 of hospitalization with resolving gluteal hematoma. This report highlighted the importance of considering an arterial injury following blunt trauma to the buttocks with subsequent painful swelling. Acknowledgment of this rare injury pattern was necessary to facilitate rapid diagnosis and appropriate treatment.
Aneurysm, False ; etiology ; Buttocks ; Hematoma ; diagnostic imaging ; etiology ; Humans ; Iliac Artery ; injuries ; Male ; Middle Aged ; Tomography, X-Ray Computed ; Wounds, Nonpenetrating ; complications

This study was conducted to assess time-sensitive magnetic resonance (MR) changes in canine blood using low-field MR. Arterial and venous blood samples were collected from eight healthy beagle dogs. Samples were placed in 5-mL tubes and imaged within 3 hours of collection at 1 day intervals from day 1 to day 30. The following sequences were used: T1-weighted (T1W), T2-weighted (T2W), fluid-attenuated inversion recovery (FLAIR), short tau inversion recovery (STIR), and T2-star gradient-echo (T2*-GRE). Visual comparison of the images revealed that four relatively homogenous blood clots and twelve heterogeneous blood clots developed. The margination of the clot and plasma changed significantly on day 2 and day 13. On day 2, heterogeneous blood clots were differentiated into 2 to 3 signal layers in the T2W, T1W, and especially the STIR images. Hypointense signal layers were also detected in the blood clots in STIR images, which have T2 hypo, FLAIR hypo, and T1 hyper intense signals. In all images, these signal layers remained relatively unchanged until day 13. Overall, the results suggest that hematomas are complex on low-field MRI. Accordingly, it may not be feasible to accurately characterize hemorrhages and predict clot age based on low-field MRI.
Animals ; Blood/*diagnostic imaging ; Blood Coagulation ; Blood Physiological Phenomena ; Dogs ; Female ; Hematoma/diagnostic imaging ; Hemorrhage/diagnostic imaging ; *Magnetic Resonance Imaging ; Thrombosis/diagnostic imaging ; Time

Hematoma ; diagnosis ; diagnostic imaging ; etiology ; Humans ; Kidney Diseases ; complications ; diagnostic imaging ; physiopathology ; Male ; Middle Aged ; Ultrasonography

Arteriovenous Shunt, Surgical ; adverse effects ; Brachial Artery ; diagnostic imaging ; Diabetic Nephropathies ; complications ; therapy ; Hematoma ; complications ; diagnostic imaging ; Humans ; Magnetic Resonance Imaging ; Male ; Median Neuropathy ; diagnostic imaging ; etiology ; physiopathology ; Middle Aged ; Neural Conduction ; Renal Dialysis ; Ultrasonography

OBJECTIVETo explore the procedures of dynamic infusion cavernosometry and cavernosography (DICC) and their application in the diagnosis and classification of venous erectile dysfunction (VED).

METHODSThis study included 103 ED patients, aged 20 to 43 years, highly suspected of VED, with disease courses of 4 months to 6 years. DICC was performed and analyses were made on the results, especially the parameters of flow-to-maintain (FTM) and pressure decay (PD) in the corpus cavernosum.

RESULTSBased on the parameters of FTM and PD, 21 of the patients were normal, 5 were suspected of VED, 39 had mild VED, 25 had moderate VED, and 13 had severe VED. Penile subcutaneous hematoma was found in 4 of the patients, all recovered after 3 to 5 days, with no other complications.

CONCLUSIONDICC is a reliable, safe and minimally invasive method for the diagnosis and classification of VED.

Diagnostic Techniques, Urological ; adverse effects ; Hematoma ; etiology ; Humans ; Impotence, Vasculogenic ; classification ; diagnosis ; Male ; Penile Diseases ; etiology ; Penis ; blood supply ; diagnostic imaging ; Radiography ; Veins

Adolescent ; Brain Diseases ; diagnostic imaging ; Brain Neoplasms ; diagnostic imaging ; surgery ; Diagnosis, Differential ; Hematoma, Epidural, Cranial ; diagnostic imaging ; Hernia ; diagnostic imaging ; Humans ; Male ; Plasmacytoma ; diagnostic imaging ; surgery ; Tomography, X-Ray Computed

A 65-year-old woman visited our hospital with a complaint of acute onset dyspnea and radiological manifestations of pulmonary thromboembolism. The patient underwent an exploratory surgery to find a whitish-blue colored mass occupying almost the whole lumen of the main pulmonary arteries. Based on the pathological and radiological findings, the patient was diagnosed to have a pulmonary arterial intramural hematoma. Intramural hematomas are usually observed in the walls of the aorta, and we believe that an isolated intramural hematoma in the pulmonary artery has not been described previously.
Aged ; Contrast Media/diagnostic use ; Diagnosis, Differential ; Echocardiography ; Electrocardiography ; Female ; Hematoma/*diagnosis/*surgery ; Humans ; Magnetic Resonance Imaging ; *Pulmonary Artery ; Thromboembolism/diagnosis ; Tomography, X-Ray Computed