المساعد الشخصي الرقمي

مشاهدة النسخة كاملة : CT-Scanning


أبو أحـمد
03-22-2007, 08:10 PM
CT-Scanning of the Chest and Abdomen


CT-scanning or COMPUTERIZED AXIAL TOMOGRAPHY utilizes the computer to construct
complex x-ray images. A series of cross sectional x-rays are taken of a
selected part of the body. From this information, the computer is able to
reconstruct excellent anatomical images that are impossible with conventional
radiography. The CT-scanner is represents one of the greatest advancements
since the invention of the x-ray. CT-scanning of the body may include studies
of the chest or abdomen.

* CHEST CT-SCANNING *

CT-scanning of the CHEST is useful in locating small tumors in the area around
the lungs (see lymphomas in the DISEASE FILE) or in the lung tissue itself (lung
cancer). It has been used to identify a dissecting thoracic aneurysm (bulging
area in an artery) of the aorta and to diagnose injuries sustained to lung,
heart, or aorta in the trauma patient (e.g. motor vehicle accident). See chest
injuries in the INJURY FILE.

* USES FOR ABDOMINAL CT-SCANNING *

1. KIDNEY: May diagnose the presence of kidney stones, tumors, inherited
abnormalities, or kidney injury.
2. LIVER: May diagnose an abscess or tumor (hepatocellular carcinoma) of this
organ. Also useful in the evaluation of blunt trauma to the abdomen (car
accident or fall). A liver laceration or contusion may be
diagnosed using the CT-scan.
3. PANCREAS: To evaluate the possibility of pancreatic tumor or inflammation in
this organ

4. GALLBLADDER AND BILIARY TRACT: To evaluate for the presence of a tumor or a
gallstone that may be obstructing the bile duct. You may reference gallbladder

5. SPLEEN: Excellent for the evaluation of blunt trauma to the spleen. Can
identify bleeding or hematomas
ruptured spleen).

6. ADRENAL GLANDS: Can identify tumors in these organs.
7. ABDOMINAL AORTIC ANEURYSM
8. EVALUATION OF LYMPH NODES FOR SUSPECT LYMPHOMA OR CANCER
9. EVALUATION OF ABDOMINAL INFECTION (diverticulitis, intra-abdominal abscess)



***** REMEMBER *****


1. If injectable contrast material is used, there is the risk of allergic
reaction. In very rare cases this reaction could result in death.
2. The radiation exposure is considered medium to high level in comparison to
other diagnostic x-ray studies. Due to the severity of the diagnoses
considered, any risks are often outweighed by the benefits of this study.

أبو صهـيـب
03-23-2007, 09:57 AM
شكرا لك أبو احمد

دوما مواضيعك مهمة جدا ، ومفيدة للجميع

واسمح لي أن أضع بعض الصورة لتوضيع التصوير المقطعي لجميع الأعضاء

هيه هي الالة المصورة
https://www.omnilabs.com/scanning/main_image.jpg

وهذه عن طريقة الصور المقطعية ( لاحظ الدقة والتفاصيل )
إضغط على الرابط لأنو الصورة كبيرة في الحجم
http://www.raleighgeneral.com/CPM/Imaging%20Services.jpg

وأكرر شكري لك أبو احمد
والى الأمام دوما عزيزي

أبو أحـمد
03-23-2007, 02:49 PM
مشكور كثير علي تعاونك وتكميل الموضوع

أبو يوسف
03-23-2007, 10:39 PM
مشكوووورين

العمدة و أبو احمد على تعاونكم

لايصال المعلومة كاملة

أبو أحـمد
03-27-2007, 09:35 PM
مشكور ابو يوسف علي المرور

سارة
03-30-2007, 03:05 AM
مشكورين الله يزيد من أمثالكم

أبو أحـمد
03-30-2007, 03:09 PM
مشكورة سارة
علي المرور
واسال الله
ان تكون الفائدة قد عمت الجميع

The Lion Heart
04-01-2007, 11:47 PM
بارك الله فيكم

وعلى العموم هاد العلم مجالو واسع جدا يعني ممكن تحدد اي شي في الجسم من التهابات الى اخره
بس كنت حابب انوه انو الرنين المغنطيسي(MRI)(Magnetic Resonance Imaging) مفضل عن الصورة المغناطيسية لانو يفوق الصورة المقطعية كفائة وجودة

صورة الجهاز
http://upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Modern_3T_MRI.JPG/800px-Modern_3T_MRI.JPG


Compare Between CTS and MRI
A computed tomography (CT) scanner uses X-rays, a type of ionizing radiation, to acquire its images, making it a good tool for examining tissue composed of elements of a relatively higher atomic number than the tissue surrounding them, such as bone and calcifications (calcium based) within the body (carbon based flesh), or of structures (vessels, bowel) which have been artificially enhanced with contrast agents containing elements of a higher atomic number than the surrounding flesh (iodine, barium). MRI, on the other hand, uses non-ionizing radio frequency signals to acquire its images and is best suited for non-calcified tissue.

Both CT and MRI scanners can generate multiple two-dimensional cross-sections (slices) of tissue and three-dimensional reconstructions. Unlike CT, which uses only X-ray attenuation to generate image contrast, MRI has a long list of properties that may be used to generate image contrast. By variation of scanning parameters, tissue contrast can be altered and enhanced in various ways to detect different features. (See Application below.)

MRI can generate cross-sectional images in any plane (including oblique planes). CT is limited to acquiring images in the axial (or near axial) plane. However, the development of multi-detector CT scanners with near-isotropic resolution produces data that can be retrospectively reconstructed in any plane with minimal loss of image quality

سامح87
07-14-2007, 06:26 PM
بارك الله فيك..
موضوع مميز ومفيد..

الرومانسي
09-03-2007, 06:52 PM
مشكوررررررررر كتير على الموضوع

عازف الامواج
09-05-2009, 06:12 AM
بارك الله فيك

ابو احمد

موضوع رائع

وشرح وافي

دمت بخير

мàтяĘx
09-07-2009, 11:22 AM
يسلموو ايديك

اخي الرائع

ابو احمد


علي هذه المشاركة المفيدة

لاتحرمنا من جديدك

لك كل الاحترام والتقدير

دمت بود ،،

عاشق الغزال
09-30-2009, 12:14 PM
مشكور أخ أبو احمد

موضوع حلو كتير

أتمنى لك مزيدا من التقدم والنجاح


تحيــــــــــــاتــــــــي

الرسول قدوتنا
11-01-2009, 04:40 AM
بارك الله فيك

وجزاك الله خيرا

lotus4ever
11-12-2009, 10:55 PM
بارك الله فيك..
موضوع مميز ومفيد