بسم الله

الرحمن الرحيم

عبدالمحسن المدالله عبدالرحمن

الزيدي علي عبدالرحمن

الوليعي فهد عبدالله

المحمود حمود عبدالعزيز

STUDY CASES UNDER COMPUTED TOMOGRAPHY

Information about Patient

• Gander : Male.

• Age : 56 years old.

• State : Abdominal pressure pain near right kidney region..

Cont….• History : 1-the patient experienced fever.

2- weight loss.

3-the proximate ultrasound shows a right kidney infiltration.

Cont….

Right kidney infiltration

PATIENT IN CT AND EXANIMATION FACTORS

Abdomen area Scan area500 mm Scan length

Cranio-Caudal Scan direction

17s Scan time

140 kV / 80 kV Tube voltage

60/360 mAs Tube current

0.5 s Rotation time

32 x 0.6 Slice collimation1.5 mm Slice width

TYPE OF CONTRAST AND VOLUME iodine Contrast

100ml volume

1.5 ml/s Flow rate

120s Start delay

CT scan machine• Our case is applied on 4th generation CT scan. • 4th generation rotate – stationary. rotate around 3600 of stationary detectors has wide fan beam full Ring of Detectors the tube rotates around a stationary ring of

detectors. • No translation movement so much faster scan.• Views are seen from the perspective of the

detector.

PREPARE FOR A CT SCAN

• PRECAUTIONS: If the patient was pregnant or may be pregnant.

• CLOTHING: You may be asked to change into a patient gown. If so, a gown will be provided for you. A locker will be provided to secure personal belongings.

PREPARE FOR A CT SCAN

• CONTRAST MEDIA: CT scans are most frequently done with and without a contrast media. The contrast media improves the radiologist's ability to view the images of the inside of the body.

-Some patients should not have an iodine-based contrast media, because it may impact on kidney function

PREPARE FOR A CT SCAN

-The most common type of CT scan with contrast is the double contrast study that will require you to drink a contrast media before your exam begins in addition to the IV contrast. The more contrast you are able to drink, the better the images are for the radiologist to visualize your digestive tract.

PREPARE FOR A CT SCAN

• ALLERGY: IV contrast will not be administered if you have had a severe or anaphylactic reaction to any contrast media in the past. If you had mild to moderate reactions in the past, you will likely need to take medication prior to the CT scan.

PREPARE FOR A CT SCAN

• MEDICATION: All patients can take their prescribed medications as usual.

• Based on your medical condition, your doctor may request other specific preparation.

After CT exam .•

Cont..

With Iodine

Diagnosis and Treatment • Diagnosis:• The post processing of the images in VNC (Virtual

non Contrast) displayed a color-coded iodine distribution map. The Dual Energy iodine assignment confirms a tumor infiltration of the right kidney, emphasizing by color-codery the hypervascularized tumor tissue with involvement of the renal vein.

Treatment Treatment: • It based on the type of tumor a stage of it.

• Many cases of tumor especially the early stage patient takes drug inhibits tumor growth, after it begins chemotherapy.

• Conclusion In the Dual Energy mode, two x-ray sources can be operated simultaneously at different KV levels.

• The results are two spiral data sets acquired in a single scan providing diverse information that allows to differentiate, characterize, isolate, and distinguish the imaged tissue and material. Enhancement patterns of kidney regions can clearly be visualized with the Dual Energy VNC application.