ObjectiveTo understand risk factors of abdominal aortic aneurysm (AAA) rupture and the latest progress.MethodThe domestic and foreign related literatures on risk factors affecting AAA rupture were retrieved and reviewed.ResultsBesides some definite risk factors of AAA rupture, including age, gender, hypertension, smoking, family history, complications (such as diabetes mellitus, hypertension, dyslipidemia, etc.), the biomechanical factor was the crucial factor of AAA rupture, including the aortic compliance, aortic wall peak value of pressure, aortic wall calcification, and hemodynamics. The latest imaging methods such as the high resolution ultrasound, function and molecular imaging, and phase contrast magnetic resonance imaging could provide technical supports for the prediction of AAA rupture.ConclusionsThere are many risk factors affecting AAA rupture. Clinicians might prevent and make individualize treatment for AAA rupture according to its risk factors, and risks of AAA rupture could be more accurately assessed with help of new medical imaging examination.
ObjectiveTo explore the different imaging manifestations of osteonecrosis of the femoral head (ONFH) and their correlation with the occurrence of pain during the peri-collapse period.MethodsThe 372 patients (624 hips) with ONFH in the peri-collapse stage who were admitted between December 2016 and October 2019 and met the selection criteria were selected as the research objects. Among them, there were 270 males and 102 females, with an average age of 35.3 years (mean, 15-65 years). There were 120 cases of unilateral hip and 252 cases of bilateral hips. There were 39 cases (39 hips) of traumatic ONFH, 196 cases (346 hips) of hormonal ONFH, 102 cases (178 hips) of alcoholic ONFH, and 35 cases (61 hips) of idiopathic ONFH. Among them, there were 482 hips with pain symptoms and 142 hips without pain. The pain duration was less than 3 months in 212 hips, 3-6 months in 124 hips, 6-12 months in 117 hips, and more than 12 months in 29 hips. According to the Association Research Circulation Osseous (ARCO) staging, the ONFH was rated as stage Ⅱ in 325 hips and stage Ⅲ in 299 hips. The patients were grouped according to ONFH etiology and ARCO staging, and hip joint pain and X-ray film (crescent sign and cystic changes), CT (subchondral bone fractures and cystic changes), and MRI (bone marrow edema, joint effusion, and subchondral hypointensity zone) were compared. Spearman rank correlation was used to determine the correlation between ONFH pain duration and X-ray film, CT, and MRI imaging manifestations.ResultsThere were significant differences (P<0.05) between ONFH patients with different etiologies in crescent sign on X-ray film, subchondral bone fracture on CT, and joint effusion on MRI. And there were significant differences (P<0.05) between ONFH patients with different ARCO stages in hip pain duration and all imaging manifestations. Correlation analysis showed that the pain duration of ONFH patients was correlated with all imaging manifestations (P<0.05). The cystic change on CT was correlated with the subchondral hypointensity zone and joint effusion grade on MRI, and subchondral hypointensity zone and joint effusion grade on MRI were also correlated (P<0.05).ConclusionThe cystic changes, subchondral hypointensity zone, and joint effusion are closely related to the collapse of the femoral head and hip pain in patients with ONFH in the peri-collapse stage. The above-mentioned signals in stage Ⅱ ONFH indicate the instability of the femoral head, which is to predict the development of ONFH and the rational choice of hip-preserving treatment methods provides a basis.
ObjectiveTo analyze injury sites and radiologic features of 60 patients with severe earthquake trauma in Min-Zhang earthquake in 2013. MethodsWe retrospectively collected clinical data of 60 patients with severe earthquake trauma who were sent to major hospitals in Lanzhou city within 7 days after the earthquake. The software of Excel was used to input and analyze clinical data. ResultsAmong 60 patients with severe earthquake trauma, there were 20 cases with single-site injury and 40 cases with multi-site injury, amounting to 120 injury sites. A total of 41 cases were injured in the limbs, involving 53 parts of fracture, of which, 11 cases were injured in the upper limbs (12 sites) and 34 cases in the lower limbs (41 sites). A total of 14 cases were injured in the skull (16 sites). 13 cases were injured in the spine involving a total of 14 vertebrae, 20 sites, of which, 10 cases were accompanied by injuries in the brain and spinal cord. A total of 17 cases were injured in the chest, of which 6 cases were accompanied by rib fracture, amounting to 27 sites. A total of 7 cases were accompanied by visceral injury, involving four sites of the abdomen. ConclusionMulti-site and multi-organ injuries are the most after the earthquake, of which, limb fracture is frequently-seen and abdominal injuries are rare. Imaging examination is very useful in screening injuries caused by the earthquake and in treatment based on categorization.
Objective To investigate the relationship between hallux valgus and the indicators associated with medial cuneiform obliquity measured on feet weight-bearing anteroposterior X-ray films. Methods Based on the feet weight-bearing anteroposterior X-ray films taken between January 2018 and February 2021 and met the criteria, the hallux valgus angle (HVA), intermetatarsal angle (IMA), metatarsus adductus angle (MAA), metatarsus cuneiform angle (MCA), distal medial cuneiform angle (DMCA), and proximal metatarsal articular angle (PMAA) were measured and the morphology of the first tarsometatarsal (TMT) were recorded. According to the HVA, the X-ray films were divided into normal group (HVA<15°) and hallux valgus group (HVA≥15°). The gender, age, sides, IMA, MAA, MCA, DMCA, PMAA, and the morphology of TMT were compared between groups. The influencing factors of HVA and IMA were analyzed by multivariate linear regression analysis. Results X-ray films of 534 patients (679 feet) met the selection criteria and were included in the study. There were 220 males and 314 females, with an average age of 36 years (mean, 18-82 years). There were 154 cases (168 feet) in the normal group and 403 cases (511 feet) in the hallux valgus group. There were significant differences in gender and age between groups (P<0.05), and no significant difference in the side (P>0.05). The IMA, MAA, and MCA in the hallux valgus group were significantly bigger than those in the normal group (P<0.05); the difference in DMCA between the two groups was not significant (P>0.05). The TMT morphology of the two groups was mainly curved, and the difference in morphology classification was not significant (P>0.05). PMAA measurement showed that there were 3 kinds of metatarsal shapes: adductive metatarsal, neutral metatarsal, and abductive metatarsal, the difference in metatarsal shapes between groups was not significant (P>0.05). The PMAA of abductive metatarsal was significantly bigger in normal group than in hallux valgus group (P<0.05), there was no significant difference in PMAA of adductive metatarsal between groups (P>0.05). Multivariate linear regression analysis showed that age, MCA, and DMCA were the influencing factors of HVA (P<0.05), and age, MAA, MCA, and DMCA were the influencing factors of IMA (P<0.05). Conclusion The medial cuneiform obliquity is relatively constant and the DMCA can not be used as the characteristic angle to quantify hallux valgus. The morphology of TMT has no relationship with hallux valgus, while MAA, MCA, and PMAA are all factors to be considered, and MCA can be used as the characteristic angle to quantify hallux valgus.
Objective To review the value of imaging assessment for perioperative period of liver transplantation. Methods The related literatures in recent years were reviewed, and the applications of various kinds of radiological techniques in perioperative period of liver transplantation and radiological strategies of major complications after liver transplantation were summarized. Results Transplantation has become an effective option for treatment of patients with irreversible severe liver dysfunction. Radiological assessment supplies prompt and accurate information for clinic to increase the success rate and reduce the complications. So it plays an irreplaceable role. Conclusions Radiology assessment is important for screening donors and recipients before liver transplantation， following up and monitoring the complications. The doctor of imaging department could grasp the different imaging appearance in perioperative period of liver transplantation.
ObjectiveTo explore the clinical characteristics, neuroimaging, diagnosis and treatment process of inpatients with Juvenile Myoclonic Epilepsy (JME).Methods83 inpatients with JME in the Epilepsy Center of Lanzhou University Second Hospital from January 2016 to August 2020 were analyzed retrospectively. Their clinical features, seizure types, inducing factors, MRI and EEG, first consultation hospital, reason for visit and drug treatment were summarized.ResultsAmong the 83 patients, there were 43 males and 40 females, with an average age of (18±5.6) years. 21 patients had family history of epilepsy or history of febrile convulsion. the average age of onset was 11.5 years old, which was earlier than those without family history and history of febrile convulsion (P<0.05). The results of cranial nuclear magnetic resonance examination were abnormal in 14 patients, including hippocampal sclerosis and local small cysts. The first symptom of 62.7% JME patients is myoclonic seizures, followed by tonic-clonic seizures, sleep deprivation was the most common inducing factor, and tonic-clonic seizures was the most common cause of treatment in JME patients, accounting for 78.3%. 80.7% of patients choose local primary hospitals for their first consultation, and there was a non-standard use of ASMs in treatment, and the seizure free rate of epilepsy after ASMs treatment was 6%, which was lower than that in provincial hospitals (P<0.05). 88% of JME inpatients can effectively control their seizures through monotherapy, among which valproic acid is the most commonly used monotherapy and combination therapy. The new oral ASMs lamotrigine and levetiracetam tablets were mostly used in female patients.ConclusionA family history of epilepsy and history of febrile convulsion may be associated with an earlier age of onset in patients with JME. Neuroimaging abnormalities can be found in a small number of patients with JME, including hippocampal sclerosis and local small cysts. Tonic-clonic seizures is the main treatment cause of JME patients, and most of them are first diagnosed in local hospitals, but the seizure free rate of epilepsy in local hospitals after ASMs treatment is low, so the training of epilepsy related knowledge for doctors in primary hospitals is helpful to the diagnosis of clinical JME and improve its control rate.
Objective To explore the early diagnostic value of single photon emission computed tomography(SPECT), thoracic computed tomography(CT),and chest X-ray for closed chest trauma. Methods To establish the animal model of unilateral chest impact trauma,to adopt SPECT, thoracic CT, and chest X-ray for early diagnosis of closed chest trauma,and to compare these findings with postmortem examination. Results Thirty minutes after blunt chest trauma, the region of interesting (ROI) between traumatized lung and the heart (ROI2/ROI1) immediately increased to the peak six hours after trauma; on the contralateral lung, the ratio (ROI3/ROI1) increased slowly and reached the peak after six hours, these ratio was still smaller than that of the traumatized lung. These differences were significant (Plt;0.01). Conclusions Chest X-ray is still the most fundamental diagnostic method of chest trauma,but it was thought that the patients of severe chest trauma and multiple injuries should be examined early by thoracic CT. Radionuclide imaging have more diagnostic value than chest X-ray on pulmonary contusion. The diagnostic sensibility to pulmonary contusion of thoracic CT is superior to conventional radiograph,but thoracic CT is inferior to SPECT on exploring exudation and edema of pulmonary contusion. Thoracic CT is superior to conventional radiograph on diagnosis of chest trauma,therefore patients of severe chest trauma and multiple injuries should be adopted to thoracic CT examination at emergency room in order to be diagnosed as soon as possible.
Objective To explore the clinical value of gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid （Gd-EOB-DTPA） enhanced magnetic resonance （MR） imaging for cirrhosis-related nodules. Methods Nineteen patients who were suspected cirrhosis with lesions of liver were prospectively included for Gd-EOB-DTPA enhanced MR imaging test between Nov. 2011 and Jan. 2013. The hepatobiliary phase （HBP） images were taken in 20 minutes after agents’ injection. The images were diagnosed independently in two groups： group A， including the plain phase and dynamic phase images； group B， including plain phase， dynamic phase， and HBP phase images. The signal intensity （SI） of lesions in HBP images， background liver SI， and background noise standard deviation were measured by using a circular region of interest， then the lesion signal to noise ratio （SNR） and contrast signal to noise ratio （CNR） were calculated. Results Nineteen patients had 25 tumors in all， including 18 hepatocelluar carcinoma （HCC） and 7 regenerative nodule （RN） or dysplastic nodule （DN）， with the diameter ranged from 0.6 cm to 3.2 cm （average 1.3 cm） . Sixteen HCC manifested hypo SI relative to the normal liver， while 2 HCC manifested hyper SI at HBP. Five HCC had cystic necrosis with the necrotic area， and there were no enhancement in artery phase， while performed flocculent enhancement at HBP. Six RN or DN showed hyper SI while another 1 showed iso SI to background liver at HBP. The diagnostic accuracy rates of group A and group B were 80.0% （20/25） and 92.0% （23/25）. SNR of RN or DN at HBP was 132.90±17.21， and of HCC was 114.35±19.27， while the CNR of RN or DN was 19.47±8.20， and of HCC was 112.15±33.52. Conclusion Gd-EOB-DTPA enhanced MR imaging can improve the diagnosis capacity of cirrhosis-related nodules， so as to develop more accurate and reasonable treatment options.