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Contrast Enhanced Cardiac MRI Findings Of Myocardial Infarction In Different Infarction Duration
Naglaa Mostafa Elsayed,
Nouf Alzahrani
Issue:
Volume 1, Issue 1, July 2013
Pages:
1-6
Received:
19 May 2013
Published:
20 June 2013
Abstract: Background: Cardiac MRIis an important tool in the diagnosis of myocardial infarction (MI), and in differentiating acute from chronic cases. Studying the myocardial viability of infracted myocardium is very important for decision making regarding coronary revascularization. Objective: The aim of this work was to study contrast enhanced MRI criteria of acute, subacute and chronic MI , and to evaluate the ability of MRI to differentiate between them. Patients and methods: Sixty patients (54 males and 6 females) with MI of different duration were included in the study. All patients were subjected to c MRI using magnetom Sonata 1.5 T Siemens machine. Ten ml gadolinium was given to every patient. Image analysis was performed, then statistical analysis was done using SPSS program 16. P value was considered significant if > 0.05.Results: Left ventricular dilatation and thin infarction wall were seen more in chronic and subacuteMI. Most cases of MI showed hypokinesia or akinesia regardless the infarction duration. In post contrast images, microvascular obstruction (MVO) was seen more in acute MI, while delayed contrast enhancement was more with chronic MI (due to scar tissue). Conclusion: cMRI could diagnose anatomical and functional abnormalities that associate MI. some criteria were more with acute MI and others were more with chronic MI. however, some degree of overlap was seen between both.
Abstract: Background: Cardiac MRIis an important tool in the diagnosis of myocardial infarction (MI), and in differentiating acute from chronic cases. Studying the myocardial viability of infracted myocardium is very important for decision making regarding coronary revascularization. Objective: The aim of this work was to study contrast enhanced MRI criteria...
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Focused Sonography in Detecting Hemoperitoneum in Blunt Abdominal Trauma Patients, Correlation with Computed Tomography
Nauman Al Qamari,
Raza Sayani,
Muhammed Ali,
Muhammad Tamim Akhtar
Issue:
Volume 1, Issue 1, July 2013
Pages:
7-11
Received:
16 May 2013
Published:
20 July 2013
Abstract: To determine the accuracy of focused assessment with sonography for trauma in detecting the hemoperitoneum in blunt abdominal trauma patients and comparing it with Computed Tomographic findings. The study was conducted at Radiology department of Dr. Ziauddin University Hospital from March 2010 to September 2010. 140 patients presented with complaints of acute blunt abdominal trauma. Focused assessment with sonography for trauma was performed. Presence of intra-abdominal fluid was taken as positive finding for hemoperitoneum. Then all the patients underwent computed tomography of abdomino-pelvic region. Focused assessment with sonography for trauma findings were compared with computed tomography results. In 83 patients, the FAST showed free intra abdominal fluid and was taken as ‘positive’. Out of these 83 cases80 (96%) were ‘true positive’ while the remaining 3(4%) were ‘false positive’ when compared with results of CT scan.Similarly, in 57 patients, no free intra abdominal fluid was detected on FAST and they were considered ‘negative’. From these 57 patients, 50 (88%) patients were ‘true negative’ and 7 (12%) were ‘false negative’ because intra abdominal free fluid was seen in them on subsequent CT scan. Thus the sensitivity and specificity of FAST in detecting intra abdominal free fluid was calculated to be 91.9 % and 94.34 % respectively. FAST scan is moderately sensitive in detecting intra abdominal free fluid when compared with the results of CT scan.
Abstract: To determine the accuracy of focused assessment with sonography for trauma in detecting the hemoperitoneum in blunt abdominal trauma patients and comparing it with Computed Tomographic findings. The study was conducted at Radiology department of Dr. Ziauddin University Hospital from March 2010 to September 2010. 140 patients presented with complain...
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Quantitative Analysis of Diffusion Weighted MR Images of Intracerebral Haemorrhage by Signal Intensity Gradient Technique
Supriya S. Shanbhag,
Gururaj R. Udupi,
K. Mothiram Patil,
Krishnaswamy Ranganath
Issue:
Volume 1, Issue 1, July 2013
Pages:
12-18
Received:
28 July 2013
Published:
20 August 2013
Abstract: Intracerebral Haemorrhage (ICH) is an important public health problem leading to high rates of death and disability in adults. Early and reliable identification of the stage of ICH is vital when choosing the proper treatment and estimating patient’s diagnosis and outcome. Diffusion Weighted - Magnetic Resonance Imaging (DW-MRI) presents a variation in the image signal intensity characteristics relative to the different stages of ICH and thus an increased understanding of the progression of the signal intensity variations on Diffusion Weighted (DW) images, subsequent to the onset of ICH, is valuable. In the present paper an effort was made to quantify the variations in the signal intensity characteristics on DW images, at evolving stages of ICH, for 32 subjects, by means of Signal Intensity Gradient (SIG) imaging metric. The relative increase in the SIG values (RSIG) for the subjects with ICH was in the range of (3.83 – 35.67) times compared to their corresponding SIG values on the contralateral normal side. The observed RSIG values were elevated in Stage 1 (Hyperacute: <1 day) and further progressively decreased in Stage 2 (Acute: 1 - 7 days) and Stage 3 (Late subacute: 7 - 14 days), and eventually reached their minimum in Stage 4 (Chronic: >14 days) of ICH. Also a negative correlation (r = − 0.97) was observed between the RSIG values and the evolving stages of ICH. Therefore, the progression of the RSIG values could be supportive in understanding the developmental stages of ICH, and further be helpful in predicting the ICH stage and providing treatment at the appropriate time.
Abstract: Intracerebral Haemorrhage (ICH) is an important public health problem leading to high rates of death and disability in adults. Early and reliable identification of the stage of ICH is vital when choosing the proper treatment and estimating patient’s diagnosis and outcome. Diffusion Weighted - Magnetic Resonance Imaging (DW-MRI) presents a variation...
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