共查询到20条相似文献，搜索用时 29 毫秒
1.
Enass M. Khattab Ayman F. Ahmed Abd El Motaleb Mohamed Ayman M. Ismail Mona M. Amer 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):1027-1034
Objective
Conventional MRI does not provide sufficient information to differentiate post-radiotherapy necrosis from brain tumor recurrence, recent studies have investigated the use of more advanced imaging modalities that are able to differentiate between the two entities.Aim of the study
To assess the usefulness of combined apparent diffusion coefficient (ADC) value and single voxel spectroscopy (SVS) in the differentiation between recurrent brain gliomas and post-radiotherapy necrosis.Methods
Twenty-two patients with suspected tumor recurrence after surgical resection and radiotherapy treatment were included in our study. MRI with contrast, diffusion weighted MRI with ADC value and MR spectroscopy were done to all patients.Results
ADC values were ≤1.150?×?10?3?mm2/sec for recurrent high grade gliomas, >1.150–≤1.370?×?10?3?mm2/sec for recurrent low grade gliomas and >1.370?×?10?3?mm2/sec for post radiation necrosis. NAA/Cr ratio could significantly differentiate between recurrent gliomas and post radiation necrosis (p value?=?.019), also Cho/Cr was significant p value?=?.006. Also NAA/Cr and Cho/Cr were statistically significant in differentiating recurrent high grade from low grade gliomas (p value?<?.001).Conclusion
Combination of calculated ADC value and MR spectroscopy added more information and increase the accuracy of conventional MR imaging in the differentiation of patients with suspected recurrent brain glioma from post-radiotherapy necrosis. 相似文献2.
Mohamed D. Homos Mohamed Talaat Ali Mohamed Fouad Osman Doaa Mohamed Nabil 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):1005-1008
Purpose
To evaluate the role of apparent diffusion coefficient (ADC) and fractional anisotropy (FA) in detecting microstructural changes of normal-appearing deep grey matter (NDGM) in multiple sclerosis (MS).Patient and methods
We examined 40 patients with MS and 20 healthy volunteers using DTI to correlate average ADC and FA of the thalami, lentiform and caudate nuclei between the two groups. Receiver operating characteristic analysis was used to test the diagnostic performance of ADC and FA in detecting NDGM involvement in multiple sclerosis.Results
Between the two study groups, there was statistically significant difference of ADC of thalami, lentiform, caudate nuclei, and FA of the thalami (p?<?.05). No statistically significant difference of FA of lentiform (p?=?.2) and caudate (p?=?.06) nuclei. For detection of microstructural changes of NDGM, ADC cut off values were 0.762?×?10?3?mm2/s for thalamus (90% sensitivity and 66% specificity), 0.529?×?10?3?mm2/s for lentiform (86% sensitivity and 60% specificity) and 0.784?×?10?3?mm2/s for caudate nuclei (83% sensitivity and 67% specificity).Conclusion
ADC has better diagnostic performance and is more accurate than FA as a measure to detect microstructural changes of NDGM. 相似文献3.
Mohamed M. Radwan Khaled M. Moghazi Nevine M.F. ElDeeb Mohamed E. Ibrahim Mohamed A. Sharaan Doaa M. Emara 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):771-778
Introduction
Cystic pancreatic lesions are currently discovered at higher rate, hence adequate characterization of these lesions by the radiologist is important in guiding management.Aim of the work
Was to identify the role of MRI in characterization of cystic pancreatic lesions.Patients and methods
Thirty patients with suspected cystic lesions of the pancreas were examined by MRI using 1.5?T machines including conventional MRI sequences, dynamic contrast enhanced imaging, DWI and IP/OP sequence.Results
The study included 30 patients (12 males and 18 females) with their age ranging from 16 to 88?years (mean age 55?years), MRI analysis of the cyst contents and communication with ductal system were used to characterize different cyst types, among these patients we found serous cystadenoma in five patients, mucinous cystadenoma in seven patients, mucinous cystadenocarcinoma in one patient, branch type Intraductal papillary mucinous neoplasms (IPMN) in seven patients, Mixed IPMN in two patients. Cystic neuroendocrine tumors (CNET) in three patients. Solid cystic pancreatic neoplasm (SPN) in two patients. Pseudocyst in one patient and walled off necrosis (WON) in two patients. Pathological assessment of the lesions was done whenever indicated.Conclusions
MRI with its superior soft tissue resolution is of value in characterization of different cystic pancreatic lesions helping to reach the correct diagnosis. 相似文献4.
Wessam Abdelrahman Elzayat Mona El-Kalioubie Manar Magdy Abdel-Naby Raafat Ragaie Abdel-Malek 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):1159-1169
Objectives
To evaluate the diagnostic accuracy of dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) in characterization of inconclusive ovarian tumors, with histologic findings as the reference standard.Patients & methods
DCE-MRI was done in 30 patients with 32 complex ovarian masses, prior to surgical excision. We analyzed the following kinetic parameters: enhancement amplitude (EA) in the form of MRE%, time to peak in the form of T max and maximal slope (MS) and correlated them with histopathology.Results
DCE-MRI showed higher overall accuracy (96%) and specificity (100%) than conventional MRI. Malignant masses showed higher MRE% than benign (p?=?.004) or borderline masses (p?=?.036). A shorter T max was found in malignant compared to benign (p?=?.0002) and borderline (p?=?.049) masses. MS was best at discrimination between benign, borderline and malignant tumors. Finally, Type III curve showed 100% specificity for invasive malignant tumors.Conclusion
DCE-MRI sequence is a helpful adjunct to conventional MRI for discrimination of inconclusive ovarian masses into benign, borderline and invasive malignant tumors. 相似文献5.
Ayman F. Ahmed Ahmed Abdel Azeem Amr Eladawy Mohamed Abdeen 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):953-960
Background
The knee menisci are compound anatomical structures with important purposes within the knee. In the long term, meniscal losing results in high risk of developing degenerative osteoarthritis. MRI is an accurate and non-invasive diagnostic method for the knee injuries providing satisfactory guide for conservative treatment and guarding the patients from uncritical arthroscopy.Objective
This study aimed to detect the MRI accuracy in diagnosis of meniscal lesions compared to arthroscopy.Patients & methods
This study included 13 females and 17 males presented by pain, swelling, limitation of movement, in the duration from April 2015 to June 2016. All patients were subjected to MRI followed by arthroscopy.Results
The study revealed that specificity, sensitivity, NPV, PPV and accuracy, in MRI diagnosis of medial meniscal abnormal signals were 50%, 95.8%, 88.4%, 86.6%, and 90% respectively, whereas those for lateral meniscus signals were 84.6% 88.2%, 84.6%, 88.2% and 86.7% respectively.Conclusion
MRI of the knee will give the orthopedic surgeons ability to select suitable treatment and arthroscopic interference for their patients. MRI has high accuracy in meniscal tears diagnosis allowing accurate grading of them. 相似文献6.
Youssriah Yahia Sabri Marian Fayek Farid Kolta Mostafa Ahmed Khairy 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(3):569-580
Background
Diffusion-weighted imaging is a fundamental tool integrated in MR protocols useful in differentiating benign from malignant mediastinal masses, assessing mediastinal lymphadenopathy and investigating central bronchogenic carcinoma. This method is an excellent alternative to CT or PET/CT in the investigation of mediastinal masses. Current applications of diffusion MRI in malignancies include monitoring the treatment response and detecting recurrent cancer.Aim of the work
This study aims to assess the value of using MRI diffusion in differentiating benign and malignant mediastinal masses, differentiating central masses from post obstructive collapse and differentiating lymphoma versus sarcoidosis.Patients and methods
This study included 30 patients; 16 males and 14 females in the period from June 2013 to July 2014. The mean age was 49.3 ± 16.85 (range: 22–82 years).Cases were referred for MRI assessment and were approved by the ethical committee in our department.The complaints varied between dyspnea, chest pain, cough, hemoptysis, fatigue and loss of weight. A superconducting 1.5 T MRI machine with a four-channel body phased-array coil was used for the examination. Biopsy and histopathological assessment was done after that.Results
MRI examination with diffusion imaging was able to differentiate between benign and malignant mediastinal and hilar lesion confirmed by the biopsy and histopathology.Conclusion
MRI with diffusion weighted images can detect and stage lung cancer, differentiate benign from malignant mediastinal masses and differentiate lymphoma from sarcoidosis in mediastinal/hilar lymphadenopathy. 相似文献7.
Mohamed Alhousini Alashwah Mohamed A. Moharram Amira S. Allakany 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):983-989
Background and purpose
Consistency of pituitary macroadenoma is a crucial information for neurosurgeons. We aimed to assess the role of DW-MRI as non invasive imaging modality in predicting the tumour consistency of pituitary macroadenoma.Materials and methods
Twenty patients with pituitary macroadenoma underwent conventional MR imaging sequences, pre contrast, post contrast MRI and diffusion weighted MRI with ADC map. The tumour consistency was determined both macroscopic by neurosurgeons and microscopic by histopathologists.Results
Our study included 12 soft, 4 intermediate and 4 hard tumours. The tumour consistency and the collagen contents were correlated with diffusion and ADC values. The mean ADC value of patients with soft tumours was 0.54?×?10?3?mm2/s while for intermediate tumour was 0.82?×?10?3?mm2/s and for hard tumours was 1.11?×?10?3?mm2/s. Soft and intermediate consistency tumours were successfully managed by endoscopic transsphenoidal approach; suction and curettage. While, hard tumours could not be managed by the transsphenoidal approach and needed further transcranial procedure with sensitivity 95% and specificity 95%.Conclusion
DWI-MRI is a useful tool to predict the pituitary macroadenoma consistency and the suitable surgical approach for resection. 相似文献8.
Aya S. Al-Rawy Mohammad al-Shatouri Mohammed El Tabbakh Azza A. Gad 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):877-884
Objectives
To create a systematic approach using computed tomography (CT) and magnetic resonance imaging (MRI) findings to facilitate identifying the etiology of hearing loss, evaluating the anatomy for surgery, and predicting complications.Methods
Twenty nine pediatric patients with congenital or acquired sensory-neural hearing loss (SNHL) requiring cochlear implant (CI) were included. They underwent combined CT, 3D DRIVE MRI axial plane and axial T2WIs for the whole brain. The inner ear, cochlear nerve development, temporal bone anatomy, operative window, normal variants and causes of central hearing loss were assessed.Results
CT showed that 100% of the patients are suitable for CI while MRI showed that 96.5% of studied patients are suitable. The examined ears were categorized into 4 groups according the candidacy for operation; 86.2% were suitable for CI, 5.1% were suitable for CI but with expected poor response, 1.7% of examined ears were suitable for CI with modification of surgical procedure and 6.8% were not suitable for CI.Conclusion
In Suez Canal area, the combined CT/MRI approach categorized the majority of patients with SNHL (96.6%) as good candidates for CI. 相似文献9.
Ahmed Elsammak 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):1073-1081
Objectives
To assess the clinical utility of PET-CT in assessment of thoracic involvement in lymphoma patients prior to, during and after finishing treatment and comparing it to contrast enhanced CT (CECT).Patients and methods
PET-CT was performed for 30 patients with lymphoma. Thoracic nodal and extranodal involvement was assessed and compared to contrast enhanced CT.Results
Comparison of CECT and PET-CT in staging and assessment of treatment response reveals significant statistical difference (P?=?.0001 & .04 respectively). CECT shows sensitivity?=?83.3% and specificity?=?75% in evaluation of patients after finishing chemotherapy.Conclusion
PET-CT plays an important role in staging, detection of response to treatment and restaging of lymphoma after finishing chemotherapy. 相似文献10.
Sahar Mahmoud Mansour Mariam Raafat 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):1131-1139
Objective
To assess the diagnostic accuracy of diffusion weighted imaging (DWI-MRI) being a non-contrast based MR sequence versus dynamic contrast enhanced MRI (DCE-MRI) in the preoperative loco-regional staging of the cervical carcinoma.Methodology
Fifty cases of proved cancer cervix prior staging subjected to dynamic post contrast technique: one pre-and six post contrast phases (40?s each). DWI was scanned using different b values and ADC values were measured.Results
DWI was the most accurate in staging operable cases (93.3%).Parametrial infiltration was overestimated in 3 cases versus 4 cases in DCE-MR. DWI showed 100% sensitivity, positive predictive value and accuracy in the assessment of locally advanced carcinomas. In metastatic lymph nodes, DCE-MR showed the least accuracy of 86%.Conclusion
DWI is helpful in discriminating local from locally advanced cervical carcinomas. DCE-MR can delineate cervical carcinomas confined to the uterus and exclude bladder/rectal invasion. 相似文献11.
Emad H. Abdeldayem Ahmed M. Osman Tamer M. Roushdy 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):1019-1025
Objective
To evaluate the use of diffusion tensor imaging (DTI) and fractional anisotropy (FA) as prognostic tools in anticipating the recovery of stroke patients.Patients and methods
40 patients were included in our study after exclusion of 23 patients. All patients admitted in Neurology Department with stroke. The patients subjected to National Institute of Health Stroke Scale (NIHSS) followed by MRI with DTI and FA calculation. Follow up after three months was done based on the Modified Rankin Score (MRS). The results were compared and statistically analyzed.Results
There was a statistical significant between the NIHSS and DTI pattern at the time of admission (p value?<?0.05) reflecting the severity of the stroke with 22 patients showed disrupted fibers (55%), of which 16 patients were categorized as moderate NIHSS and 19 patients showed poor outcome. Relative FA equal 0.8 was found to be the cut off value in predicting the poor or good prognosis using MRS as a reference with 94.4% sensitivity, 90.9% specificity and 0.833 area under curve.Conclusion
DTI is a prognostic tool in anticipating the recovery of the stroke patients. Moreover, the relative FA score works as more additive value in evaluation of the patient improvement. 相似文献12.
Alsiagy A. Salama Reda A. Alarabawy Mohammed M. Dawoud Hanaa A. Zayed Ahmed Soliman Ahmed El-Tantawy 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(1):189-199
Objectives
The objectives of our work were to determine disability and study MRI findings of occupational-related lumbar disc degeneration and also to show the relationship between MRI grading of nerve root compromise with surgical grading.Participants and methods
The study included 103 workers with lumbar disc prolapse. Nerve roots were assessed on MRI and during surgery for the degree of compromise. Oswestry Disability Index and Visual Analogue Scale were used for assessment of disability and pain intensity pre- and post-operative respectively.Results
The majority of workers was less than 40 years and suffered from moderate to severe disability. 73.8% had grade IV disc degeneration mostly at the level of L4/L5. Nerve root compromise was found in 86.4% of workers. 48% of nerve roots were deviated and 32% were compressed, with significant correlation between MR grading of nerve root compromise and surgical grading (r = 0.89, P < 0.0001).Conclusion
Disability of occupational-related lumbar disc degeneration is a grave health problem between construction workers. MR imaging is a reliable tool for grading nerve root compromise in disc degeneration. Nerve root compromise is a significant factor to explain pain than the morphologic extension of disc material outside the intervertebral space. 相似文献13.
Nasr Mohamed M. Osman Reem A. Abdel Aziz Gamal T. Soliman Asmaa Gamal Mohamed 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):1083-1090
Objective
The aim of this work is to evaluate bone mineral density (BMD) in children with idiopathic epilepsy under anti-epileptic drugs and to determine the effect of the type and the duration of drug administration on BMD.Subjects and methods
This study conducted on 120 children divided into two groups, Epileptic group included 60 children diagnosed as having epilepsy on the basis of clinical examination receiving antiepileptic drugs (AEDS). Control group included 60 healthy children.All patients subjected to clinical examination and determination of bone mineral density.Results
Among epileptic children, there were 35 children (58.3%) with generalized tonic clonic seizures, 11(18.3%) were partial, 10(16.7%) were partial with secondary generalization, 4(6.7%) were absence seizures. 41(68.3%) epileptic patients were on antiepileptic monotherapy while 19 (31.7%) were on polytherapy. Seventeen children with low bone mineral density state (LBMD) and 43 with normal bone density. Epileptic patients had lower BMD, Z- score, and AM compared with controls (P value?<?.001). Epileptic patients with LBMD had significant decrease in Z score, BMD and AM (P?<?.001) compared with epileptic patients with normal bone state.Conclusion
Epileptic patients receiving polytherapy showed more decrease in BMD than that of epileptic patients receiving monotherapy with (P?<?.001). 相似文献14.
Ahmed Ebraheem Ebeed Marwa Abd El-hamied Romeih Medhat Mohamed Refat Mohamed Hamdy Yossef 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):807-815
Purpose
To assess the role of dynamic contrast- enhanced and diffusion-weighted (DWI) MRI in the evaluation of the response of hepatocellular carcinoma (HCC) after chemoembolization.Patient & method
30 patients having 40 HCC lesions underwent transcatheter arterial chemoembolization (TACE). Ages ranged between 41 and 76?years. All examinations were performed using Philips 1.5 Tesla MRI (Achieva). Precontrast T1, T2, Dynamic contrast enhanced and respiratory triggered DWI MR images with (b?=?50, 400, 800?mm/s). DWI MRI images and Contrast-enhanced MRI images after TACE are assessed to evaluate post treatment response. DWI was used to create ADC maps and ADC values were calculated looking for a cut off value using the ROC curve.Results
Dynamic MRI had a sensitivity of 94.1%, a specificity of 95.6%, PPV value of 94.1%, NPV of 95.6% and an overall agreement of 95% compared to 82%, 73.9%, 70%, 85% and 77.5% respectively of DWI MRI. The difference between the malignant residual and well ablated groups' ADC variables was statistically significant P value 0.009.Conclusion
Dynamic and diffusion MRI complete each other in assessment of HCC response to therapy, especially in those who cannot properly hold their breath that cause degradation of the dynamic MR quality. 相似文献15.
Susan Adil Ali Maged Abd Elgalil Hamed 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(3):671-676
Purpose
to assess the efficacy of FDG PET/CT in detecting unexpected additional primary malignant neoplasms in patients being evaluated by PET/CT for known malignancies compared to conventional staging work-up (CSW).Patients and methods
Of 1889 patients referred for whole-body FDG PET/CT in the period from February 2015 to May 2016, only 273 were included in this prospective study. Patients included are those with histopathologicaly proven primary malignancy and sent for initial tumor staging before treatment within 1 month of CSW that was performed for the patients according to the site and cell type of the primary tumor. Histopathologic examination was performed for lesions indicating additional primary cancer detected by either PET/CT or CSW.Results
In 13 out of 273 patients included in the study (4.76%) only were proved to have additional primary cancer, the PPV of PET/CT for detecting an additional primary cancer was 56.5%. Also, it showed high sensitivity of 89.2%, which was significantly higher than 23% from the CSW (P < 0.005).Conclusion
PET/CT is more accurate than CSW for detecting additional primary cancer with a higher sensitivity and positive predictive value, which consequently affect further management. 相似文献16.
Reham Farghaly Iman Zaki Iman Gouda Mohamed Abdelfatah Ahmed El Ghoneimy Magdy El Sherbiny Ranin Soliman Manal Zamzam 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(2):461-465
Histologic response to neoadjuvant chemotherapy is an essential prognostic criterion in osteosarcoma. Non-invasive assessment of the effect of neoadjuvant chemotherapy influences the timing and method of definitive surgery.
Aim
This study evaluated the use of Dynamic Contrast Enhanced-MRI (DCE-MRI) in preoperative estimation of residual viable tumor present in Osteosarcoma following chemotherapy.Patients and methods
We conducted a prospective study from July 2011 till April 2013 on 50 pediatric patients with a mean age of 12.8 years diagnosed as Highgrade osteosarcoma in long bones at the Children Cancer Hospital Egypt.Conventional and dynamic MRI performed before definitive surgery was compared with histopathology assessment of necrosis. For DCE-MRI, 3 regions of interest (ROIs) were chosen and the signal intensity was plotted against time. Signal intensity values and curve pattern were compared to percent of necrosis of the corresponding areas on the resected specimens.Results
DCE-MRI showed sensitivity of 92.5% and specificity of 96% with positive predictive value of 92% and negative predictive value of 96%. Negative correlation was found between signal intensity values and percent of necrosis.Conclusions
DCE-MRI can be used preoperatively as a sensitive, specific, and non-invasive method for detection of viability and necrosis within osteosarcoma. 相似文献17.
Hala Yehia Yousef Haitham A. Dawood Nesreen Mohey 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):927-930
Aim of the work
To evaluate the role of diffusion weighted imaging (DWI) in the planning for CT guided biopsy of lung and mediastinal lesions.Subjects and methods
This cross sectional study included 23 patients with mean age was 42.7?years came with clinical and imaging suspicion of chest malignancy, referred for CT guided transthoracic biopsy. DWI and apparent diffusion coefficient (ADC) were evaluated for all patients to choose the area of maximum restriction.Results
The study showed that with DWI guidance; all the biopsy specimens were diagnostic and provide adequate material for analysis.Conclusion
DWI and measurement of ADC value has a very helpful role in the pre-procedural planning of transthoracic biopsies. 相似文献18.
Mohamed I. Yousef Medhat M. Refaat Mohamed H. Faheem 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(4):817-824
Aim
To evaluate accuracy of DWI in evaluating HCC response to DEB TACE and compare the results with DCE MRI.Material and methods
42 patients with 59 lesions underwent precontrast abdominal MRI, DWI, ADC map with ADC value measurement and DCE MRI. The qualitative DWI and ADC values were correlated to the DCE MR findings.Results
Comparing the qualitative DWI findings to DCE MRI, showed sensitivity of 83.9%, specificity of 64.3%, positive predictive value of 72.2%, and negative predictive value of 78.3% and overall accuracy of 74.5%. The measured ADC values showed significant difference (P value <0.05) between the ADC values measured in the active tumoral areas and necrotic areas with no significant difference between areas of active tumoral enhancement in the different groups. ROC analysis for ADC values showed area under curve 0.7 and maximum combined sensitivity and specificity of 79% and 69.6% respectively at cutoff ADC value of 1.395?mm2/sec.Conclusion
DWI is useful highly sensitive technique in evaluation of HCC response to DEB TACE, yet it has low specificity related to high number of false positive results preventing using it solely. Also, DWIs is a reliable method in differentiation between active tumor residue/recurrence and benign perilesional enhancement. 相似文献19.
H.M. Etman A. Mokhtar M.I. Abd-Elhamid M.T. Ahmed T. El-Diasty 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(1):153-160
Objective
To study image quality of MRI scanner using the American College of Radiology (ACR) phantom.Material and methods
Image quality of 1.5 T MRI scanner was tested using ACR phantom. A standard head coil with standard restraints was used to fix the phantom head position. The phantom included seven modules for measuring MRI scanner image quality. MRI images for each module were analyzed.Results
For the Geometric accuracy test the inside length of the phantom was 146 mm and the inside diameter was 189.4 mm. For the High-contrast spatial resolution, individual small bright spots on the image were three pairs of hole arrays and were distinguishable. For the slice thickness test, the top signal ramp length was 54.4 mm and bottom signal ramp length was 54.8 mm so the slice thickness was 5.46 mm. For the slice position accuracy, the bar length differences of intensity uniformity a value, called percent integral uniformity (PIU), was 96.15%. For the percent-signal ghosting, ghosting ratio was 0.0002. For the low contrast object detectability, the sum of numbers of complete spokes scored was 30 spokes.Conclusions
Image quality tests were very important in acceptance of any MRI scanner after installation and during maintenance. Using ACR phantom, these tests approve that the image parameters are acceptable. 相似文献20.
Mennatallah Hatem Shalaby Sherin M. Sharara Mohammed H. Abdelbary 《The Egyptian Journal of Radiology and Nuclear Medicine》2017,48(3):645-652